耐沾污涂料

200901101 形成疏水涂膜的组合物、高耐久和耐污性的疏水涂膜、涂膜形成方法及其功能材料;200901102 耐污性好的氨基甲酸酯橡胶可固化组合物;200901103 耐沾污性好的热固性含羟基树脂面漆及在涂有底漆的金属板上涂层的形成;200901104 一种抗污和防涂鸦涂料及其制备方法。     

耐沾污涂料

含硅氮烷的耐沾污固化涂膜及其制备方法；耐沾污性好的硬涂料组合物；具有耐沾污表面的板的制备方法；具有持久耐沾污性的涂料。由其制备的耐沾污板及其制备；耐沾污液态有机硅氧烷涂料组合物。[编者按]     

自清洁涂料的研究思路与现状

介绍了提高涂膜耐沾污性的主要原理,提出从改善涂膜表面性质和提高涂膜致密性两方面来提高涂膜的耐沾污性的一些思路,并介绍了目前国内外制备耐沾污涂料的主要方法和相关的产品。     

水性建筑涂料不同性状涂膜耐沾污性研究

选取不同水性建筑涂料对其耐沾污性进行研究。结果表明,涂膜的粗糙度、吸水率、硬度、静水接触角对涂膜的耐沾污性有重要影响,并简要分析了涂膜耐沾污的原理,为耐沾污水性涂料的研制开发提供科学依据。     

涂料及无机颜料

几种耐高温涂料通过鉴定 由中国化工新材料总公司涂料工业研究设计院研制的含铝高温涂料、高温标志漆、云母绝缘漆、高温多变色不可逆示温涂料等项目,近期通过国家石油和化学工业局组织的技术鉴定。 含铝高温涂料可室温固化,涂膜有良好的耐介质性能和高温稳定性,长期耐温达600℃。高温     

无毒型塑料热稳定剂问世

由中国化工新材科总公司涂料工业研究设计院研制的含铝高温涂料、高温标志漆、云母绝缘漆、高温多变色不可逆示温涂料等项目,日前通过国家石油和化学工业局组织的技术鉴定。含铝高温涂料可室温固化,涂膜具有良好的耐介质性能和高温热趋定性,长期耐温达６００℃。高温标志漆为水分散型安全环保产品,涂膜具有很好的附着力和热稳定性,在４５０～６５０℃长期工作漆膜无变化。云母绝缘涂料具有良好的耐热性、电绝缘性能和机械性能,可长期耐温２６０℃而电性能不下降。高温多变色不可逆示温涂料在９００～１２５０℃温度区间内涂膜可给出６个变色…     

耐沾污涂料

200810148形成疏水涂膜的组合物、高耐久和耐污性的疏水涂膜、涂膜形成方法及其功能材料;200810149带有逐渐溶解涂膜的复合材料及由其制备的耐沾污涂料组合物;200810150可形成好的涂膜外观的贮存稳定性好的含氟表面活性剂耐沾污涂料组合物;200810151耐划伤性、耐沾污性和耐碱性好的防反射涂料组合物;     

地坪涂料：如何提高工业地坪的施工质量与应用

抗静电UV固化丙烯酸聚合物组合物、由其制得的耐划伤涂膜和层压件；抗静电装饰建筑材料及其所用含钛酸钡的涂料；屏蔽用导电涂料的配方设计。     

塑料用涂料

嵌段树脂及其制备和含该树脂的颜料分散体；适用于凹版印刷涂覆方式的聚酯膜用底涂涂覆剂组合物及其制备方法；用于非曝露表面用溶剂型可固化涂料的材料及其耐划伤涂料和涂膜；用于非曝露表面用水稀释型可固化涂料的材料，其耐划伤涂层材料和涂膜；光透过性树脂产品用染色性好的涂料组合物     

氨基树脂及其涂料：含过氧化物固化剂的在线热固化涂料

一种耐划伤的热塑性膜含膜层和耐划伤涂层（由丙烯酸基料、热引发剂和三聚氰胺交联剂组合物形成）。涂层可以通过在膜形成的同时在线涂覆形成。三聚氰胺交联剂不仅能使涂膜交联，而且可以改进涂层与膜之间的附着力。     

盾构管片专用胶的研制及应用

以端羧基液体丁腈橡胶、环氧树脂、增稠剂、着色剂等为主要材料,研制了一种盾构管片专用的改性环氧树脂胶粘剂。通过将三元乙丙橡胶密封条和丁腈软木衬垫粘接在盾构管片上,有效地解决了盾构管片的渗水和安装问题。实验结果表明,制备的胶粘剂拉伸强度和剥离强度均满足设计要求,具有强度高、耐水性和耐老化性强等优点。     

管材专用高密度聚乙烯的研究进展

综述了国内高密度聚乙烯(HDPE)的生产装置及工艺。采用双峰聚合工艺使短支链更多地分布在高相对分子质量部分是HDPE管材从PE80级升至PE100级的主要原因。管材的耐环境应力开裂性能随HDPE相对分子质量减小而下降,提高短支链含量可提高管材的耐环境应力开裂性能。HDPE的相对分子质量越高,管材抗裂纹扩展性能越好,将短支链分布在高相对分子质量端可提高抗裂纹扩展性能。     

聚酯聚醚混合二元醇对水性聚氨酯性能的影响

以异佛尔酮二异氰酸酯(IPDI)和异佛尔酮二胺(IPDA)为硬段,分别以聚四氢呋喃二醇(PTMEG2000)、聚己二酸新戊二醇酯二醇(PNA2000)及其混合物为软段,制备了系列水性聚氨酯(WPU)乳液.通过ATR-FTIR对聚氨酯结构进行了表征分析,采用拉伸测试、热失重分析、动态力学分析及耐水性测试等手段对WP U胶...     

氢化丁苯橡胶的性能与表征

用IR,DSC,TEM表征了由丁苯胶乳氧化制备的氧化丁苯橡胶（HSBR）的微观结构及结晶状态,并测定了HSBR老化前后的力学性能,结果表明,HSBR在较高氢化下形成了较多的结晶聚乙烯链段,具有较好的力学性以,优异的耐热老化性及耐候稳定性,HSBR的氢化度愈高,结晶度愈大,物理机械性能愈优异,可作为优良的耐老化型热塑性弹性体。     

Microstructure and performance of brazed diamond segments with NiCr–x(CuCe) composite alloys

Novel multi-layer brazed diamond segments were fabricated using NiCr–x(CuCe) composite alloys. Differential scanning calorimetry curves of the composite alloys were measured and analysed. The microstructures of the alloy segments and surface topographies of the brazed diamond segments were characterised. Performance tests of the alloy segments and brazed diamond segments were performed. The undercooling degree of the Ni–Cr alloy in the composite alloy increased with the Cu–Ce alloy addition, which led to coarse NiCu-rich regions and Ni₃Si phases. A brazed diamond segment with a 5% Cu–Ce alloy addition exhibited the highest wear resistance and machining performance and the best surface morphology after a wear test. An excessive Cu–Ce alloy addition led to a rapid decrease in wear resistance of the brazed diamond segment owing to the large number of coarse NiCu-rich phases falling off from the composite alloy. The mechanism of the reduction in thermal damage to diamonds by the Cu–Ce alloy is elucidated. Initially the Cu–Ce particles melted and mainly Ni atoms diffused into the Cu–Ce liquid, thereby leading to the formation of NiCu-rich regions and Ce₂Ni₇ and CeNi₂ phases, which in turn promoted the diffusion. The melting temperature of the Ni–Cr composite alloy was significantly reduced by the addition of the Cu–Ce alloy.     

有机硅改性水性聚氨酯-丙烯酸酯乳液的制备及性能

采用种子乳液聚合方法合成了具有核壳结构的有机硅改性水性聚氨酯-丙烯酸酯复合乳液,TEM测试结果表明,该乳液具有核壳结构。通过共混与共聚体系衰减全反射红外光谱(ATR-FTIR)的比较及表面光电子能谱(ESCA)研究证实有机硅链段已被化学键入聚氨酯-丙烯酸酯分子链中,且硅氧烷链段有表面富集的倾向。表面水接触角及耐水性测试结果表明,随着有机硅含量的增加胶膜的水接触角增大,耐水性提高。     

Delamination Cracking in a Laminated Ceramic-Matrix Composite

Delamination crack propagation has been investigated in a laminated fiber-reinforced ceramic-matrix composite. The crack growth initiation resistance has been shown to be dominated by the critical strain energy release rate for the matrix. However, the resistance increases with crack extension because of bridging effects associated with intact fibers and, in some cases, intact segments of matrix. The delamination cracks also assume a steady-state trajectory within a 0° layer close to the 0°/90° interface.     

Effect of trimethylene carbonate segments on the structure and properties of poly(L-lactide-glycolide-trimethylene carbonate) terpolymers for biodegradable vascular stents

The total biodegradable vascular stent made of poly(L-lactide-glycolide-trimethylene carbonate) terpolymers with excellent performances has the potential to be used in a new generation of medical implant devices. In this work, the properties and structure of terpolymers were investigated, which were found to be controlled by the composition of the copolymer chain. The amorphous trimethylene carbonate segments not only disturbed the sequence regularity of the L-lactide segment, but also reduced the crystallization ability of the material. Furthermore, it is the flexible segments in the terpolymer chains that improve the plastic flow capacity, increase the flexibility of chains as well as reduce the apparent activation energy of thermal degradation of materials. Such a chain structured terpolymer exhibited good extrudability and buildability in 3D printing and formed a vascular stent with a cohesion entanglement characteristic microstructure during the process. The crush resistance with radially applied load and crush resistance with parallel plates of stent were 2561.4 mm Hg and 0.24 N/mm, respectively.     

Modification of unsaturated polyesters using polyethylene glycol

Abstract

The fracture toughness and impact resistance of rigid unsaturated polyesters can be modified by various physical and chemical methods. In this study, flexible unsaturated polyesters were prepared by condensation polymerisation of maleic anhydride, phthalic anhydride and propylene glycol in the presence of polyethylene glycol. By this method, copolymers of unsaturated polyesters with polyethylene glycols of different molecular weights were prepared. A two stage process was used for the synthesis, which resulted in segmental structures containing alternating rigid cross-linked segments and linear soft segments displaced regularly in the polymer chain. Properties such as tensile strength, tensile modulus, elongation at break, toughness, impact strength, surface hardness, abrasion resistance and water absorption were tested after the resin was cured in appropriate moulds and compared with those of the control resin. Polyethylene glycols of lower molecular weight (～ 200) impart flexibility to the polyester chains and increase fracture toughness and impact resistance of rigid unsaturated polyester without seriously affecting other properties. Glass reinforced specimens prepared using the modified resin also show improved toughness and elongation at break.     

室温固化水性聚氨酯树脂的耐水性研究

以甲苯二异氰酸酯(TDI)、聚醚多元醇(PTMG)为主要原料,二羟甲基丙酸(DMPA)为亲水单体,采用三羟甲基丙烷脱水蓖麻油酸酯(TMPDCO)进行改性,通过逐步聚合反应制备了一系列室温固化水性聚氨酯树脂。研究了TMPDCO的含量、亲水基团含量、软段多元醇种类与相对分子质量、封端剂以及氮丙啶交联剂等对聚氨酯涂膜耐水性的影响,从而确定了最佳合成配方,获得了优良耐水性能的水性聚氨酯树脂。