Attapulgite (AT) was a reinforcing agent filled composite latex including natural rubber (NR) and styrene butadiene rubber (SBR). The structure of attapulgite was characterized by fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results showed that the structure of attapulgite was typical fiber. It caused vulcanization performance decline and prolonged the curing time of AT/NR/SBR composites. The mechanical performance of composites was obviously higher than that of the blank sample. The tensile strength of composite declined with the increasing amount of AT. The best optimal composite was that the amount of attapulgite was 1%and the tensile strength was up to 20.2 MPa, compared with the blank, increased by 16%. SEM was used to analysis the morphology of tensile fracture sample. The attapulgite was dispersed into rubber as bundle structure which improved the adhesive between filler and rubber and enhanced the decomposition temperature of composite.

The stability of a electrothermal membrane, which was prepared from water-soluble conductive ink based on conductive carbon black (CB), poly(vinyl alcohol) (PVA) and poly(vinyl acetate) (PVAc), has been studied. The effects of the ratio of resin matrix to conductive materials on membrane stability were emphatically investigated. The results of experiments indicated that the performance of electrothermal membrane could be improved by adding appropriate conductive material, and the membrane stability is highly dependent on the ratio resin matrix to conductive material. Under the favorite experimental conditions the electrothermal membrane expresses good electroconduction and stable performance.

The title acrylic resin coatings was studied in the paper. The acrylic resin prepolymer were reacted with crosslinkable monomer at the presence of initiator and acceleraton to form the crosslinked film. The coatings, which is low viscosity, low dust-free time, low pollution, high soild content, high hardness, good flexibility, good adhesion and good weatherability, was prepared. The synthesis of acrylic resin prepolymer was discussed emphatically, and the properties of coatings film was tested. Furthermore, the method of control viscosity of the prepolymer and the suitable formulation of coatings were also found. It may provide a reference for production and application in acrylic resin road mark coatings.

Absorption resin was first proposed as a carrier for phase change materials.Big hole absorption resin was discussed as a carrier to absorb paraffin phase change material to prepare storage and energy saving materials.The high absorption resins polyacrylate were synthesized by suspension polymerization.Polarized light microscope was used to observe the morphology of resin before and after absorbing paraffin;differential scanning calorimetry(DSC) was employed to measure the thermal storage and liberation properties of the resin after adsorbing paraffin.The results show that the maximum adsorption capacity of paraffin can reach up to 8.772 6 g/g,the volume of the resins increase more than four times after adsorbing paraffin and the paraffin reserve rate could reach more than 94.0%;while the phase transition enthalpy is 105.60 J/g.

Through the radical polymerization of acrylate resin prepolymer and crosslinking monomers by the action of initiator and accelerator,the coatings are prepared with low viscosity,high solid content,short tack-free time,low pollution,good flexibility,strong adhesion and perfect weatherability. This paper mainly discusses the synthesis of acrylate resin prepolymer and the test of fi lm property;a method for controlling the viscosity of prepolymer and suitable formula of coatings are obtained,providing reference for the manufacture and use of acrylic road marking coatings.

The oil-absorbing resin was used as a carrier for adsorption of phase change material such as paraffin to prepare energy storage and energy-saving materials.Suspension polymerization was adopted to develop a high oil-absorbing resin of acrylic series.Optical microscope was used to observe the morphology before and after the oil-absorbing,differential scanning calorimetry(DSC) was employed to measure the thermal storage and liberation properties of the resin after adsorbed phase change material paraffin.The results showed that the maximum adsorption capacity of paraffin on oil-absorbing resin could up to 5.75 g/g,and the phase transition enthalpy was 96 J/g.

The transformation temperature of dodecanol is 24 ℃ and its dissolving heat is 188.8 kJ/kg.With the three-phase surface polymerization's method by phase shifts,one kind of gelatin micro capsule PCM was synthesized taking the polyurethane as the wall material to wrap the dodecanol.The thermal properties of this kind of synthesis energy storage material and the microscopic structure were studied through the DSC,the polarizing microscope and the scanning electronic microscope.The experimental result indicates that the gelatin micro capsule synthesized energy storage material is formed through the gelation adsorption of small diameter nuclear shell structure micro capsule,and has the high enthalpy value.

ZnO-SiO2 nanoparticles were obtained by depositing SiO2 layer through TEOS hydrolysis on the surface of nano-ZnO,and they were added into polycarbonate(PC) matrix to modify PC. The surface coating effect on nano-ZnO was investigated,the anti-photodegradation properties of composites with different content of nanoparticles were tested,and the effects of nanoparticles on the injection molding parameters of composites were discussed. The results indicated that SiO2 was successfully deposited on the surface of nano-ZnO. The spherical ZnO-SiO2 nanoparticles in the uniform size were homogeneously dispersed in PC matrix,which improved the anti-photodegradation property of PC and reduced the injection temperature,injection pressure and retaining pressure.

A New kind of solid phase change material(PCM) prepared in our laboratory has been studied in this paper.In this PCM,4-styrylpyridine has been taken as functional branches,with which the energy storage and energy release can be proceeded by phase transition between its crystal state and amorphous state.And polyvinyl alcohol(PVA) has been taken as a skeleton,which ensures the solid nature of PCM during the phase transition.The result shows that the new functional material prepared has great value in use and infinite prospect of development potentia1.

The water-dispersed conductive polyaniline was synthesized by emulsion polymerization,which was carried out in the three-phase system of non-polar solvent,surfactant and water by using dodecylbenzene sulfonic acid as emulsifier,dodecylbenzene sulfonic acid and hydrochloric acid as co-doping agent,ammonium persulfate as initiator.The impacts of co-doping agent,ammonium persulfate,stirring time and reaction temperature on the conductivity and solubility of polyaniline were studied in detail.The results indicated that the properties of polyaniline were differing under different reaction condition.Considered the conductivity and solubility of polyaniline,the optimal reaction conditions were as following: reaction temperature 15℃,stirring time 6 h,n(aniline)∶n(HCl)∶n(DBSA)∶n(APS)=0.0500∶0.0900∶0.0123∶0.0500,the conductivity and solubility of product were 2.964 S/cm and 23.99%,respectively.The conductive polyaniline could be processed with water-soluble resin due to its properties,the use field of polyaniline,hence,could be extended.Compared with polyaniline-base,the characteristic absorption bands of doping polyaniline shifted to low frequency direction in the infrared spectrum.The absorption band of the quinoid had large change due to the doped position is at the quinoid of polyaniline.The characteristic absorption bands of quinoid in the doped polyaniline has obvious shift in the UV spectrum.

The influence of conductive carbon black(CB) modified by coupling agent OL-AT1618 on the properties of conductive ink and electrothermal membrane was studied.The results showed that compared with the volume resistivity of conductive ink prepared by CB,the volume resistivity of conductive ink prepared by modified CB was lower,but the phenomenon of percolation threshold was later.The adhesion of conductive ink was enhanced with modified CB.The dispersion of carbon black in the resin was improved through the SEM.The stability of electrothermal membrane was improved when it was working in the room temperature condition and the adiabatic condition.

Cis-4-styrylpyridine is prepared from benzaldehyde and 4-methylpyridine in the presence of acetic anhydride. Reaction temperature, mole ratio of reactants, reaction time, addition method of 4-methylpyridine and dosage of acetic anhydride on the effect of yield were studied. Optimal reaction conditions are fixed as following: acetic anhydride 30 mL, reaction temperature 120~130 ℃, n(benzaldehyde):n(4-methylpyridine)1:1.5. 4-Methylpyridine is drop added slowly and reacted for 8 hours. The target yield is 40.76%. Melting point of 4 methylpyridine is 126.7~127.6 ℃, exothermic enthalpy and endothermic enthalpy of cis-4-styrylpyridine, which are determined by differential scanning calorimeter, are 52.36 J/g and 50.43 J/g, respectively.

Application and progress of percolation theory in the process of study for conduction mechanism of conductive composites were introduced. The differences between real system and several presently prevalent percolation theory models were analysed systematically. We bring forward a better interpretation of the formation mechanism of the conductive network must be on the basis of organic unity and amend of several percolation theory models because of the multiformity and complexity of effect factors for conduction mechanism.

In this paper,water-based conductive ink of PVA/PVAc were studied.The influences of ratio of conductive filler with matrix resins on the stability of the electric heater's value of resistance were discussed,and the results showed that the stability of the electric heater's storage and electricity can be improved enormously by appropriate adjusting the ratio of conductive filler with matrix resins.The results are a reference for the problem of the stability of the electric heater's value of resistance.

In this paper, we discussed the effect that caused by the content of the carbon fillings on the resistivity and the V-A characteristic of the crylic acid series water-based conductive ink. The study indicated that, along with the increase of the quantity of the conductive fillings, the resistivity of the dried coating reduced. The curve of the V-A characteristic was straight-line when the quantity of the conductive fillings was low, which accorded with the Ohm law, and when their quantities increased the non-linearity heightened. Basing on the results, we could choose the optimized techniques of the conductive fillings to conduct industrial production.

采用合成的具有核壳结构的环丙乳液配制的水性路面标线涂料;讨论了乳化剂、环氧树脂、丙烯酸酯功能单体的用量对乳液性能的影响和对涂料的干结时间、耐水性能及施工泛黄的影响因素,并提出了相应的解决措施.

讨论了在利用萃取法制备高品位不溶硫的过程中,各种工艺参数对不溶硫稳定性的影响,并采用单因素法确定了萃取剂的最佳品种、萃取剂的最佳用量以及最佳反应时间.

在不溶硫萃取过程中,通过加入卤素给予体来提高高品位不溶硫的稳定性.在研究高品位不溶硫的稳定性理论和卤素给予体的作用机理的基础上,采用单因素法确定了卤素给予体的最佳品种、最佳用量和最佳反应时间.

Hollow latex particles were synthesized by seeded emulsion polymerization, thus, a seed latex consisting of styrene(St), butyl acrylate(BA) copolymer was first prepared, and seeded terpolymerization of St-BA-MA(methacrylic acid) with divinely benzene as cross-linking agent were then carried out in the absence of surfactant. Final latex was then treated by a two-step treatment under alkaline and acidic conditions, particles with hollow structure were obtained. The effect of initial pH value, temperature and time in the process of alkali treatment-the first step in the information of the hollow structure within the paritcles on the diameter, the hollow size and the amount of surface carboxylic group of latex particles were studied. The results show that hollow latex particles with the largest hollow size can be obtained in a certain condition(pH 12.5, temparature 90 ℃, time 3 h).

Hollow polymer latex particles were prepared by seeded emulsion polymerization. A seed latex consisting of styrene (St), butyl acrylate(BA) copolymer was first prepared, and seeded terpolymerization of St-BA-MA(methacrylic acid) were then carried out in the absence of surfactant. Final latex was treated by a two-step treatment under alkaline and acidic conditions, thus, the particles with hollow structure were obtained. We discussed the effects of pH value, temperature and time in alkali and acid treatment processes on hollow structure within the polymer latex particles and amount of carboxylic group on particle surface. The results show that the hollow polymer latex particles with the largest hollow size can be obtained under a certain condition (pH12.5, 90°C, 3 h in alkali treatment stage and pH2.5, 85°C, 3 h in acid treatment stage).