蒙脱石对改性硅酸盐富锌防腐涂料性能的影响

为了提高富锌防腐涂料的综合性能,以硅丙乳液、硅溶胶、氢氧化钾、鳞片状锌粉为主要原料,分别添加经HOOC(CH2)17NH+3有机改性的蒙脱石与无机蒙脱石作为抗沉剂,制备改性的硅酸钾水性无机富锌防腐涂料.探讨了蒙脱石种类和用量对富锌涂料涂层性能、表面形貌及耐蚀性的影响.结果表明:采用有机蒙脱石作为抗沉剂的富锌防腐涂料的综合性能优于未添加抗沉剂的涂料,而后者的综合性能优于采用无机蒙脱石作为抗沉剂的涂料.当以加入量为涂料总质量的0.3%的有机蒙脱石作为抗沉剂时,所配制的涂料涂层表面平整、致密且机械性能以及耐腐蚀性能优异,是一种绿色长效的防腐涂料.     

建筑钢化涂料的研究

以硅溶胶和丙烯酸乳液为主要成膜物质,配制成有机无机复合型建筑涂料。通过正交试验和优选法筛选出较合适的涂料配方,使涂膜具有较好的硬度、耐水洗、耐化学等性能。该涂料不污染环境,成本适中,符合建筑涂料的发展方向。     

聚丙烯酸酯-水性环氧树脂共混乳液涂膜性能的研究

主要利用聚丙烯酸酯涂料的柔韧性来改善水性环氧树脂涂膜的脆性.以甲基丙烯酸甲酯为硬单体、丙烯酸丁酯为软单体、丙烯酸为功能单体制备聚丙烯酸酯共聚物乳液，用自制的聚丙烯酸酯乳液对水性环氧树脂共混改性．讨论了不同制备条件下制得的聚丙烯酸酯共聚物乳液对涂膜性能的影响，确定了较佳的聚合工艺条件。     

水玻璃苯丙乳液复合内墙涂料的研制

介绍了水玻璃苯丙乳液复合乳液复合内墙涂料的制备工艺及产品性能。以水玻璃为主成膜物质,苯丙乳液为次成膜物质,丙二醇丁醚为助成膜剂,地稠剂为浓度１０％的高分子的水溶液,有助于颜料的悬浮和防止涂料在涂刷时出现流挂现象。采用无机复合生产工艺,在高速搅拌机中,无需加热与颜料、体质颜料和其它助剂搅拌合成,经研磨,即得产品。该产品白色无光可作为中高档内墙涂料使用,可采用刷涂、辊涂、喷涂施工方法,各项性能指标均符     

纳米SiO_2改性丙烯酸酯复合乳液的制备

通过在丙烯酸酯乳液聚合过程中添加纳米Si O2对乳液进行改性,制备出有机-无机复合乳液。探讨了乳化剂配比、引发剂量、聚合工艺等对乳液性能的影响,并对制备出的乳液进行性能测试。结果表明,改性后的丙烯酸酯乳液的硬度由HB提高到2H、吸水率由11.11%降低为4.48%。采用核壳乳液聚合工艺制得的乳液成膜性能更加优良,但硬度有所降低。     

魔芋葡甘聚糖/乙基纤维素共混成膜机理的研究

通过魔芋葡甘聚糖水相与乙基纤维素油相共混,制备出稳定的成膜乳液,并对不同干燥时间内的乳液进行真空冷冻干燥。采用红外光谱法对不同干燥时间内共混样品进行红外分析;等温滴定量热法对共混乳液进行微量热测定;向共混乳液样品中添加不同浓度的尿素,通过光学显微镜观察乳液稳定性。结果表明,在成膜过程中魔芋葡甘聚糖和乙基纤维素分子间发生氢键相互作用。为探讨魔芋葡甘聚糖和乙基纤维素共混成膜机理提供了理论依据。     

海泡石/聚丙烯酸钠复合调湿涂料的制备及性能研究

以无机矿物海泡石和高吸水性树脂(SAP)聚丙烯酸钠为吸湿材料,苯丙乳液为基料,TiO2为颜料,CaCO3为填料,采用正交化试验设计,制备了16组无机矿物高分子复合调湿涂料样品,测试了涂料样品的吸放湿性能,最后对比各个样品的调湿性能,得到一种调湿涂料吸放湿性能最佳配方比.     

“零VOC”丙烯酸酯类涂料的研究进展

在分析水性涂料中有机挥发物（Volatile Organic Compound,VOC）主要来源的基础上,从乳液合成和助剂选择两方面阐述了消除VOC的途径．探讨了利用核壳乳液聚合、引入功能性单体和软硬乳液混拼等思路来解决乳液的高玻璃化温度Tg和最低成膜温度MFT之间的矛盾,着重论述了丙烯酸酯类涂料的制备及其改性．认为“零VOC”涂料适应未来的环境要求．     

硅溶胶型建筑涂料的研制

以硅溶胶和有机高分子乳液为主要原料，加入填料和分散剂、增稠剂、消泡剂等成膜助剂，制得硅溶胶型建筑涂料。讨论了各种因素对涂料性能的影响，确定了最佳配方工艺。     

WPU/WEP共混乳液稳定性研究

初步探索了水性聚氨酯（WPU）与水性环氧树脂（WEP）共混乳液的制备工艺,研究了共混乳液的高温稳定性、机械稳定性、酸碱稳定性和盐稳定性,并通过对共混乳液性能的测试,寻求最佳配比。研究共混体系的含固粒径分布与固化行为和机理,WEP：WPU=3：1,对固化膜进行了TG分析。结果表明：凝胶时间与固化温度、固化剂含量有很大关系,共混物的固化速率受温度的影响很大。     

Microstructure and Performance Analysis of Organic Coating under High Temperature and High CO_2 Partial Pressure

To evaluate the property of the organic coatings in oil and gas plants, the aging process was studied in high temperature and high CO_2 partial pressure environment. Correlations were developed between the macroscopic properties and microstructure of the organic coatings. The surface appearance, mechanical properties, and permeability of the organic coatings were measured. Furthermore, the crystal structure of the organic coatings was investigated through synchrotron radiation grazing incidence X-ray diffraction(GIXRD) on the BL14B1 beam line in Shanghai Synchrotron Radiation Facility. Combined with the Fourier transform infrared spectroscopy, the molecular structure of the organic coatings was investigated. The experimental results indicate that the thickness variation and weight loss of the organic coatings increase with the immersion time, and the penetration resistance of the coating obviously decreases as the temperature rises. Moreover, the degradation of the organic coatings with immersion time in high temperature and high CO_2 partial pressure environment is caused by the amorphization of the organic coatings as the groups and bonds of the organic coatings were not damaged.     

Microstructure and performance analysis of organic coating under high temperature and high CO<Subscript>2</Subscript> partial pressure

To evaluate the property of the organic coatings in oil and gas plants, the aging process was studied in high temperature and high CO₂ partial pressure environment. Correlations were developed between the macroscopic properties and microstructure of the organic coatings. The surface appearance, mechanical properties, and permeability of the organic coatings were measured. Furthermore, the crystal structure of the organic coatings was investigated through synchrotron radiation grazing incidence X-ray diffraction (GIXRD) on the BL14B1 beam line in Shanghai Synchrotron Radiation Facility. Combined with the Fourier transform infrared spectroscopy, the molecular structure of the organic coatings was investigated. The experimental results indicate that the thickness variation and weight loss of the organic coatings increase with the immersion time, and the penetration resistance of the coating obviously decreases as the temperature rises. Moreover, the degradation of the organic coatings with immersion time in high temperature and high CO₂ partial pressure environment is caused by the amorphization of the organic coatings as the groups and bonds of the organic coatings were not damaged.     

Corrosion protection of AM50 magnesium alloy by Nafion/DMSO organic coatings

The effectiveness of the corrosion protection of Nafion/Dimethysulfoxid （DMSO） organic coatings for AM50 magnesium alloy prepared by simple immersion and heat treatment was investigated. Its corrosion resistance and morphologies of the Nafion/DMSO organic coatings were studied by electrochemical corrosion testing and optical microscopy. The results show that Nafion/DMSO organic coatings can improve the corrosion resistance of AM50 magnesium alloy effectively. Also, the corrosion resistance increases with the surface density of the organic coatings.     

导电涂料研究进展

综述了功能导电涂料的分类、导电性能的影响因素、掺杂导电机理，及其涂料的用途．     

Preparation of Polyacrylate-based Conductive Coatings and Its PTC Effect

Polyacrylate-based conductive coatings were prepared from polyacrylate emulsion as matrix and carbon black (CB) whose surface was treated with thanate coupling agent as conducting particles. One kind of organic crystal was added to study its effects on the electrical conductivity and PTC ( positive temperature coefficient ) effect of the conductive coatings. Experimental results show that the watings containing only polyacrylate emulsion and CB exhibit an excellent electrical conductivity but bad PTC effect, and when organic crystal is added,PTC effect is characterized and can increase by 2 orders of magtitude. The critical transformation temperature of polyacrylate emulsion/CB PTC composites is decided by melting point of organic crystals.     

有机粘结固体润滑膜研究进展

分析了有机粘结固体润滑膜的减摩耐磨主要机理,详细讨论了环氧与酚醛环氧、聚酰亚胺与聚酰胺酰亚胺、聚苯硫醚和聚酰胺等常用高分子树脂基体固体润滑膜的摩擦学特性及其性能,展望了高分子固体润滑膜的发展趋势和研究方向.     

Preparation and recipe optimization of water-based architectural heat insulation coatings

Water-based architectural heat insulation coatings were studied to overcome the drawbacks of conventional inorganic silicate heat insulation coatings. The heat insulation coatings were prepared with the method of mechanical agitation when the mixed organic polymer emulsions were used as binder of the coatings and the mixed heat insulating aggregates were applied as powder, and some assistants were also added. Water temperature difference in the plastic container, which was coated with heat insulation coatings, represented the heat-insulating property of the coatings. The influences of components of mixed polymer emulsion, mass ratio of polymer emulsion to powder, particle size of heat insulating aggregates, added amount of air entraining admixture and the match of thickeners on the properties of the coatings were studied. The experimental results show that the heat insulation coatings with good finishing, heat-insulation property and artificial weathering can be prepared when the binder is composed of 66.92% styrene-acrylic emulsion, 16.59% elastic emulsion and 16.49% silicone-acrylic emulsion, the mass ratio of polymer emulsion to powder is 0.45, the particle size of heat insulating aggregates is in the rang of 200 and 250 mesh size, the added amount of sericite is 15%, and the added amount of air entraining admixture is in the range of 1.0% and 1.5% and the thickeners are the mixtures of ASE-60 and RM-5000.     

The Wear Process of PTFE Coatings Under Vacuum Conditions

The wear process of PTFE coatings sliding against GCrlS-bearing steel ball under vacuum conditions was investigated, and the hardness of the PTFE coatings on both sides of wear track was measured. The experimental results showed that the friction coefficient of the PTFE coatings increases with the increase of sliding distance under different sliding velocities. And the friction coefficient of the PTFE coatings increases with the increase of sliding distance under different sliding loads. The wear rate of PTFE coatings decreases with the increase of sliding distance. And the majority of the wear produced during the whole wear process of PTFE coatings sliding against GCr-15 steel ball comes from the early period of friction. The hardness of PTFE coatings on both sides of wear track increases as the distance increases and distributes symmetrically around the wear track. Scanning electron microscope （SEM） was utilized to investigate the worn surface of PTFE coating, h was found that the worn surface of PTFE coating is characterized by sever plastic deformation and spalling of the PTFE coating. The edge of wear track is characterized by micro cracking.     

耐腐蚀水乳液的制备及其在涂料中的应用

水性化技术是消除传统溶剂型涂料中挥发性有机物（VOC）的有效手段,但现有水性涂料的耐腐蚀性与溶剂型产品相差较大。本文以二元醇、异氰酸酯、环氧树脂等为基本原料,合成一种自乳化型耐腐蚀水乳液并制备相应涂料,对乳液进行红外表征,优化乳液固化条件,并对固化后涂料的耐热性及其基本性能进行分析测试。结果表明:所制备的乳液分子中各原料发生了预设的反应;二元醇分子量对产物耐腐蚀性能有一定影响,当分子量为4 000时,产物耐腐蚀性最优;乳液与固化剂质量比为8:1时达到最优配比;该涂料的耐中性盐雾试验时间可达1 100 h以上;其他各种性能良好。