Preparation of wood plastic composites (WPC) is of great significance to seek alternative materials of wood, and its effective way to realize plastic recy(?)ling. In this paper, profound research is given on surface modification of woo(?), preparing process of foaming materials and performances of the recycle polyethylene wood plastic composite.Main results are listed blow:1. A novel method is employed to improve the compatibility between woo(?) and olefin resin by using ethane-EVA .Test of FTIR shows that after the surface modification by EVA, chemical polarity of natural wood surface is reduced. Test of TG shows that thermal stability of treated wood-flour is higher than the untreated one by adding EVA. SEM shows that when the EVA mass content is 15 wt%, the wood-flour was completely encapsulated.2. Foamed WPC is made by treated wood-flour with EVA and recycle-PE. The test of the material shows that EVA can improve the mechanical property. SEM test shows that EVA can increase the consistent between the wood-flour and polymer. The principle of EVA in foaming process of wood plastic material, and the theoretical model are established.3. The relationship between processing parameters and mechanical properties of the material was studied. Qualified products are prepared by defining the technological conditions and parameters during foaming process.4. A-shaped model of wood plastic compounding material is established for the stress and strain analysis by FEM software Ansys. Flexing of simple beam made of this material shows that it can be substitute of wood in the condition of compression stress and simple beam.

Magnetic nanoparticle is a composite particle that composed of magneticmetal or oxide with magnetic responsive property. Magnetite （Fe₃O₄） was characteristic of small scale effect, quanta effect and peculiar superpara magnetism. Magnetic nanoparticle could be dispersed in liquid phase, thus forming magnetic fluids, which qualified with fluidity and magnetism, and be widely used in biomedicine field, such as cellular therapy （cell labeling, targeting and separation）, tissue repair, drug delivery, magnetic resonance imaging （MRI）, hyperthermia and so on. In this paper, ultrafine iron oxide nanoparticles were prepared in alkaline solution by chemical co-precipitation method, then modification was carried out by amino silane KH550, adsorption of bovine serum albumin on surface of magnetic particles were studied after KH550 wrapped.Firstly, iron oxide was prepared by adding ammonia to an aqueous mixture of Fe²⁺ and Fe³⁺ chloride with nitrogen protection, the precipitated is black in color. The results indicate that the prepared powder is Fe₃O₄ , which is paramagnetic , with a diameter of 30 nanometer. Amino silane could hydrolyze when it was dissolved in solution, so we synthesized the Fe₃O₄/KH550 compound powder by polymerizing hydroxyl between nanoparticles and 3-aminopropyl-triethoxysilane. The experimental results show that magnetic nanoparticles were well dispersed and stabilized with a small decrease of the magnetic saturation after modification, chemistry coupling existed between KH550 and Fe₃O₄ and -NH₂ were introduced to surface of Fe₃O₄, which could have a further use, such as the linkage of protein, DNA and antibody.Adsorption of bovine serum albumin on surface of magnetic particles were studied in the presence of silane coupling KH550 in phosphate buffer salt （PBS, pH7.4）, the content of amino silane, reaction time, the original concentration of BSA and other interrelated factors were discussed in this paper. We summarize that the process of adsorption is rather rapid and the amount of BSA on surface of pure Fe₃O₄ is 17mg/g after 30 minutes, on the other hand the amount is 65mg/g on surface of KH550 wrapped Fe₃O₄, the adsorption amount increased as BSA original concentration increased. The capability of hydrophile improved after modification and the contact angle fell from 63 degree to 16 degree, at the same time the magnetic characteristics had a small decrease, so the magnetic compound powder can be separated promptly and used as target carrier. Cell culture result indicate that pure Fe₃O₄ is disadvantageous for MC 3T3-E1 cell proliferation; the cell growth had a faint influence after introduction of KH550, the biocompatibility of magnetic nanoparticle was improved when the adsorption of bovine serum albumin was carried out.

The optics, electric, thermodynamics and magnetism properties of magnesium hydroxide nanorods are very different from the common magnesium hydroxide. The magnesium hydroxide nanorods is widely used in flame-retardant area, nano-magnesium oxide ceramic, neutralizer in environment protecting field, desulfurizer in flue gas and so on. Common magnesium hydroxide as flame-retardant will be effective when the loading is as high as 40 percent., which will largely decrease the mechanical property. The product of magnesium hydroxide nanorods will help to solve the problems. The liquid method concerning the preparation method of magnesium hydroxide nanorods is the most common method and there are some other methods such as liquid-solid arc discharge technique and Pulsed-laser ablation of Mg in liquids.The magnesium hydroxide nanorods were prepared by precipitation conversion method, using basic magnesium chloride as precursor and sodium hydroxide as precipitation conversion agent. The effects of these reaction factors, such as the solvent, mol ratio of reactants and concentration of sodium hydroxide etc, to the morphology of magnesium hydroxide nanorods, were studied. The products are characterized and detected by the following means, such as the X-ray diffraction, Scanning Electron Microscopy （SEM） and so on. The results indicate that the solvent and the morphology of basic magnesium chloride are the main effecting factors. The best condition of the preparation of reactants is as followed: the solvent is ethanol; the mol ratio of sodium hydroxide to basic magnesium chloride rods is 2:1; the concentration of sodium hydroxide is 2mol/L; reaction temperature is 60℃; reaction time is 1 hour. Well-crystallized single-crystal magnesium hydroxide nanorods with diameter of 100-200nm and length of 6μm were obtained.Magnesium chloride hexahydrate （MgCl₂·6H₂O） , urea（H₂NCONH₂） , magnesium oxide（Light） and ammonia were the reactants, and different morphological magnesium hydroxide materials were prepared by liquid phase method. The drying curves and drying rate curves were obtained by drying kinetics experiments. The equilibrium moisture adsorption isotherms of magnesium hydroxide of three morphological micro-nanostructures at room temperature were gained. The results indicate that drying rate curves of magnesium hydroxide microparticles exhibit three stages: a set-up period, a constant rate drying period and a falling rate drying period. And drying rate curves of magnesium hydroxide nanosheets（ nanosheets1 and nanosheets2） show the similar three stages with a little descending trend in constant rate drying period. It is also found that the initial moisture contents, critical moisture contents and equilibrium moisture contents of Mg（OH）₂ nanosheets are larger than those of Mg（OH）₂ microparticles under the same drying conditions. The drying math models of nanosheets and microparticles are obtained. It is found that the results of simulation by drying math models are in good agreement with experimental data, and therefore drying math models found could adequately describe the drying behavior of the according micro-nano magnesium hydroxide products.The experiment of surface modification of magnesium hydroxide nanorods with stearic acide was processed. The modification effects of the dosage of stearic acide and modification time to magnesium hydroxide nanorods were investigated. The products were characterized and detected through the X-ray diffraction and IR analysis. It is shown that the dosage of stearic acide is 5% and the modified time is about 1 hour.

Brucite has drawn great attention as flame-retardant filler due to its high thermal stability, non-toxicity, smoke inhibition, non-volatility and lower cost. However, it is difficult to obtain sufficient interfacial bonding between matrix and brucite powders because of the poor compatibility between them. The following work has been done for trying to solve the above problems. Firstly, the ultrafine surface-modified brucite powders was prepared by mechanical milling with the planetary high-energy ball mill. Effects of the ball milling parameters and the amount of additives on the powder granularity and the modification effect were investigated. Laser Particle Size Analysis, Scanning Electron Microscopy （SEM）, X-ray Diffraction （XRD）, Activation Index, Contact Angle Measurement and Sedimentation Measurement were used to examine granularity, morphology and surface properties of the modified brucite powders. The results indicate that the D₉₀ of the surface-modified sample reduced from 32.75μm to 1.26μm. The ultrafine powders have a uniform morphology and retain the original crystal structures. The surface modification is efficient when the amount of the grinding aids is 0.2 wt.% and the amount of the surfactant is 2 wt.%. The activation index of the ball milled powders has a 98.5% increment as compared to the original powders, the contact angle increased to 131 degrees and the sedimentation time is prolonged to 22.5 hr.Secondly, Brucite / Polyester Artificial Stone was prepared by adding the ultrafine surface-modified brucite powders and consolidation additives into the unsaturated polyester resin. Effects of the types of the resins and the amount of brucite on the properties of polyester artificial stone were investigated. The flame retardancy of polyester artificial stone was measured with Limit Oxygen Index meter （LOI） and Cone Calorimeter （CONE）. The LOI results indicated that the oxygen index enhanced along with the addition of brucite. It Arrives 31.3 when the portion of brucite is 50 wt.%, having been 11% enhanced compared to the pure polyester resin. The CONE analysis results demonstrated that the ignition time lengthens to 153 s and the heat release rate decreased 80%. Furthermore, the smoke production rate and total smoke production reduced by 2/3 when the polyester artificial stone contains 50 wt.% brucite. The bending strength enhanced from 27.69 MPa to 40.75 MPa, and the impact strength increased from 2.1 KJ/m^-2 to 3.1KJ/m^-2. Thirdly, the Curing Kinetics of polyester artificial stone and the polyester resin were studied by the non-isothermal DSC method. Effect of the amount of brucite on the curing properties of unsaturated polyester resin were investigated. The results showed that the curing reaction activation energy of polyester resin and polyester artificial stone are 34.5 KJ/mol and 18.1 KJ/mol, respectively. The results indicated that the brucite has inhibitory effect on the resin’s curing properties.

Recently,as an important functionalization method,surface modification has been a hotspot in the material research.Having been surface modified,the capability of the mesoporous materials will be improved,and it will come into the excellent fictionalization mesoporous materials.This paper is based on the usages in the different fields,through the way of mesoporous materials surface organic modification method to enhance the hydrophobicity of the mesoporous materials,and have further,research and discuss for the preparation and the character of the polymer/mesoporous silica platelet composite.Adopting the post-transplanting method,more than ten surface modifiers such asγ-Aminopropyl triethoxysilane,γ-Methacryloxypropyl trimethoxy silane,Silane coupling agent KH-792,Octadecyl-trimethoxysilane,Tetrabutyl titanate,stearic acid, xylitol,n-Octanol,Dodecanol and Hexadecanol have been grafted on the surface of the SBA-15 mesoporous Silica platelet,and also through the testing methods such as N₂absorption-desorption、FT-IR、SEM、TEM、TG、DTA and elemental analysis to characterize the sample.The result indicates that after the surface modificating,the sample keep the uniform ordered mesoporous pore channel,and its hydrothermal stability and hydrophobicity have been improved.Especially,when modified by n-Octanol,the number of organic functional groups grafted on the surface of mesoporous is the most,and the hydrophobicity have the most obviously improve.The SBA-15 mesoporous Silica platelet,which has been surface modified by the n-Octanol,with polymer HDPF and PET together to carry through the composite prepared by melt blending.The preparation of the SBA-15 mesoporous Silica platelet /HDPE and SBA-15 mesoporous Silica platelet /PET composite,and tested the sample character by the methods of electronic universal testing machine,SEM and DSC.Knowing from the SEM photograph,the sample,which has been surface modified by the n-Octanol,disperses uniformly in the matrix HDPE,and has good compatibility.When it contains 3%SBA-15 meso-porous silicon wafer,the tensile strength of the composite material increases 47.75%,and the bending strength 7.9%.

The heat resistant coating is a sort of special functionality coating that generally refers to the coating can endure the long-term high temperature above 200℃, and also can keep certain physical chemistry functions, enable the protective object normally working in high-temperature environments. With the development of the vaiation and astronavigation enterprise, the important role of heat resistant coating has aroused the various concerns. The high-temperature organosilane coating possesses excellent thermal stability, low heat conductivity and good wave transparent capability, therefore are the preferred materials for wave transmission materials thermal protection using in aerospace technology.Natural fine quartz particles possess heat resistance, therefore are used as filler to prepare high-temperature coating. They were modified by silane coupling reagent to avoid the agglomeration of natural fine quartz particles, Natural fine quartz was treated with silane coupling reagent KH-550、KH-560、KH-570, and the modified natural fine quartz is analyzed by Fourier transform infrared spedtroscopy(FT-IR), X-ray photoelectron spectroscopy(XPS) and viscosity techniques. According to the spectra of FT-IR and XPS, it can be inferred that the silane coupling reagent was bound on the surface of natural fine quartz particles and an organic coating layer was formed. The viscosity experiments show that the natural fine quartz particles modified by 1.5% KH-570 have the best result. The results of wetting property and thermogravimetric analysis (TG) showed that, after surface treatment, the miscibility between natural fine quartz particles and polymethylphenylsiloxane was increased, and their dispersion in polymethylphenylsiloxane and the thermal stability of high-temperature coating were also improved.The high-temperature organosilane coating was prepared by silicone resin as main made-membrance material, natural fine quartz modified by KH-570、Cr2O3、talcum powder、the glass powder with low melting point as filler and butanol、dimethylbenzene as solvent. The silicone resin was synthesized by using methyltrichlorosilane、dimethyldichlorosilane、phenyltrichlorosilane、diphenyldichlorosilane as materia1s, and methylbenzene、acetone as solvent. The structure of silicone resin was characterized with FT-IR methods. It was shown that the silicone resin was polymethylphenylsiloxane termined by hydroxyl groups. The results of TG showed that polymethylphenylsiloxane had good thermal performance. The results of TG also showed that the silicone resin added filler has a higher decomposit temperature.The high-temperature coating performance test results showed that the optimum formula is as following: the silicone resin 100g, natural fine quartz modified with KH-570 40g, Cr2O3 5g, BYK-323 for 0.7g, talcum powder 5g, the glass powder with low melting point 5g. Coating performance test results show that the heat-resistant temperature is 550℃,the flexibility is 1mm, the attached force level is 0, the hardness by pencil test is 3H, the viscosity is 46s. The water-resistant tested results indicated the surface coating had no blistering, wrinkling, peeling and rust after emerged 5d in the 25℃water test. Its AFM photo showed coating thickness uniformity, the natural fine quartz and other fillers dispersion coating, evenly distributed. the performance of high-temperature coating in full compliance with the requirements of the project.

Biaxial orientation polyethylene terephthalate（BOPET） film is widely used in printing, packaging and so on for its excellent comprehensive properties. But its surface tension is lower which couldn’t meet the application requirements, so we must improve the surface properties of BOPET film. However the surface tension of BOPET corona film would degradate during conservation in actual application. Especially in the hot and humid conditions, it decrease rapidly, which resulting in the aluminum plate and printing ink easily fall off from the film. Thus the corona aluminum laminated BOPET films cannot match the need of package at high lever. How to improve the surface energy of poly film and maintain stability at longer time is a common problem of abroad and home industry. The purpose of this project is looking for a kind of water-soluble acrylic resin used as paint for the modification of poly film,and improve resistance degradation of surface tension and water -resisted of BOPET film under the fastness of aluminum layer.Firstly,the paper studied the copolymerization system considering the properties of BOPET film. The results show that,when methyl methacrylate（MMA）, butyl acrylate（BA）, acrylic acid（AA） and 2-hydroxyethylmethacrylate （HEMA） are used as monomers of copolymer,the hydrosol synthesized by solution polymerization has outstanding propetries,and smootht ransparency coating can be obtained with the paint based the resin.The paper researched the effect of monomer content on properties of coating film and found the optimization process parameters. Repeat and magnify experiment results showed that the process has better repeatability and stability. We obtained the high surface tension of 56mN·cm^-1, adhesion of 0 level and good water -resisted of coating resin by self-crossing modification. DSC and TG results indicated that the crossing modification resin has better thermal stability.Finally, according to the properties of aluminum laminated films, the coating process was researched to determine the coating process parameters. The BOPET coating film has better properties of resisting degradation of surface tension under the condition of the best coating process parameters. The surface tension only reduce 5 mN·cm^-1 after 70h in the hot air of 90℃.And the aluminum layer’s adhesion of BOPET coating aluminum laminated film is still as high as 1.86 N/15mm after being treated 20min in boiling water,which indicated that it has excellent properties of boiled water- resisted. At last, the paper analyzed the mechanism of degradation of the BOPET film’s surface tension and the adhesion fastness and shedding theory of the aluminum layer.

The heat resistant coating is a sort of special functionality coating that generally refers to the coating can endure the long-term high temperature above 200℃, and also can keep certain physical chemistry functions, enable the protective object normally working in high-temperature environments. With the development of the vaiation and astronavigation enterprise, the important role of heat resistant coating has aroused the various concerns. The high-temperature organosilane coating possesses excellent thermal stability, low heat conductivity and good wave transparent capability, therefore are the preferred materials for wave transmission materials thermal protection using in aerospace technology.Natural fine quartz particles possess heat resistance, therefore are used as filler to prepare high-temperature coating. They were modified by silane coupling reagent to avoid the agglomeration of natural fine quartz particles, Natural fine quartz was treated with silane coupling reagent KH-550、KH-560、KH-570, and the modified natural fine quartz is analyzed by Fourier transform infrared spedtroscopy(FT-IR), X-ray photoelectron spectroscopy(XPS) and viscosity techniques. According to the spectra of FT-IR and XPS, it can be inferred that the silane coupling reagent was bound on the surface of natural fine quartz particles and an organic coating layer was formed. The viscosity experiments show that the natural fine quartz particles modified by 1.5% KH-570 have the best result. The results of wetting property and thermogravimetric analysis (TG) showed that, after surface treatment, the miscibility between natural fine quartz particles and polymethylphenylsiloxane was increased, and their dispersion in polymethylphenylsiloxane and the thermal stability of high-temperature coating were also improved.The high-temperature organosilane coating was prepared by silicone resin as main made-membrance material, natural fine quartz modified by KH-570、Cr2O3、talcum powder、the glass powder with low melting point as filler and butanol、dimethylbenzene as solvent. The silicone resin was synthesized by using methyltrichlorosilane、dimethyldichlorosilane、phenyltrichlorosilane、diphenyldichlorosilane as materia1s, and methylbenzene、acetone as solvent. The structure of silicone resin was characterized with FT-IR methods. It was shown that the silicone resin was polymethylphenylsiloxane termined by hydroxyl groups. The results of TG showed that polymethylphenylsiloxane had good thermal performance. The results of TG also showed that the silicone resin added filler has a higher decomposit temperature.The high-temperature coating performance test results showed that the optimum formula is as following: the silicone resin 100g, natural fine quartz modified with KH-570 40g, Cr2O3 5g, BYK-323 for 0.7g, talcum powder 5g, the glass powder with low melting point 5g. Coating performance test results show that the heat-resistant temperature is 550℃,the flexibility is 1mm, the attached force level is 0, the hardness by pencil test is 3H, the viscosity is 46s. The water-resistant tested results indicated the surface coating had no blistering, wrinkling, peeling and rust after emerged 5d in the 25℃water test. Its AFM photo showed coating thickness uniformity, the natural fine quartz and other fillers dispersion coating, evenly distributed. the performance of high-temperature coating in full compliance with the requirements of the project.

Biaxial orientation polyethylene terephthalate（BOPET） film is widely used in printing, packaging and so on for its excellent comprehensive properties. But its surface tension is lower which couldn’t meet the application requirements, so we must improve the surface properties of BOPET film. However the surface tension of BOPET corona film would degradate during conservation in actual application. Especially in the hot and humid conditions, it decrease rapidly, which resulting in the aluminum plate and printing ink easily fall off from the film. Thus the corona aluminum laminated BOPET films cannot match the need of package at high lever. How to improve the surface energy of poly film and maintain stability at longer time is a common problem of abroad and home industry. The purpose of this project is looking for a kind of water-soluble acrylic resin used as paint for the modification of poly film,and improve resistance degradation of surface tension and water -resisted of BOPET film under the fastness of aluminum layer.Firstly,the paper studied the copolymerization system considering the properties of BOPET film. The results show that,when methyl methacrylate（MMA）, butyl acrylate（BA）, acrylic acid（AA） and 2-hydroxyethylmethacrylate （HEMA） are used as monomers of copolymer,the hydrosol synthesized by solution polymerization has outstanding propetries,and smootht ransparency coating can be obtained with the paint based the resin.The paper researched the effect of monomer content on properties of coating film and found the optimization process parameters. Repeat and magnify experiment results showed that the process has better repeatability and stability. We obtained the high surface tension of 56mN·cm^-1, adhesion of 0 level and good water -resisted of coating resin by self-crossing modification. DSC and TG results indicated that the crossing modification resin has better thermal stability.Finally, according to the properties of aluminum laminated films, the coating process was researched to determine the coating process parameters. The BOPET coating film has better properties of resisting degradation of surface tension under the condition of the best coating process parameters. The surface tension only reduce 5 mN·cm^-1 after 70h in the hot air of 90℃.And the aluminum layer’s adhesion of BOPET coating aluminum laminated film is still as high as 1.86 N/15mm after being treated 20min in boiling water,which indicated that it has excellent properties of boiled water- resisted. At last, the paper analyzed the mechanism of degradation of the BOPET film’s surface tension and the adhesion fastness and shedding theory of the aluminum layer.

Biaxial orientation polyethylene terephthalate（BOPET） film is widely used in printing, packaging and so on for its excellent comprehensive properties. But its surface tension is lower which couldn’t meet the application requirements, so we must improve the surface properties of BOPET film. However the surface tension of BOPET corona film would degradate during conservation in actual application. Especially in the hot and humid conditions, it decrease rapidly, which resulting in the aluminum plate and printing ink easily fall off from the film. Thus the corona aluminum laminated BOPET films cannot match the need of package at high lever. How to improve the surface energy of poly film and maintain stability at longer time is a common problem of abroad and home industry. The purpose of this project is looking for a kind of water-soluble acrylic resin used as paint for the modification of poly film,and improve resistance degradation of surface tension and water -resisted of BOPET film under the fastness of aluminum layer.Firstly,the paper studied the copolymerization system considering the properties of BOPET film. The results show that,when methyl methacrylate（MMA）, butyl acrylate（BA）, acrylic acid（AA） and 2-hydroxyethylmethacrylate （HEMA） are used as monomers of copolymer,the hydrosol synthesized by solution polymerization has outstanding propetries,and smootht ransparency coating can be obtained with the paint based the resin.The paper researched the effect of monomer content on properties of coating film and found the optimization process parameters. Repeat and magnify experiment results showed that the process has better repeatability and stability. We obtained the high surface tension of 56mN·cm^-1, adhesion of 0 level and good water -resisted of coating resin by self-crossing modification. DSC and TG results indicated that the crossing modification resin has better thermal stability.Finally, according to the properties of aluminum laminated films, the coating process was researched to determine the coating process parameters. The BOPET coating film has better properties of resisting degradation of surface tension under the condition of the best coating process parameters. The surface tension only reduce 5 mN·cm^-1 after 70h in the hot air of 90℃.And the aluminum layer’s adhesion of BOPET coating aluminum laminated film is still as high as 1.86 N/15mm after being treated 20min in boiling water,which indicated that it has excellent properties of boiled water- resisted. At last, the paper analyzed the mechanism of degradation of the BOPET film’s surface tension and the adhesion fastness and shedding theory of the aluminum layer.