嘉诚有机硅专用不沾树脂替代特氟隆树脂

全国专业生产有机硅树脂重点骨干企业、江苏省高新技术企业常州市嘉诺有机硅有限公司最新研制成功一种替代特氟隆树脂的产品——即有机硅专用不沾树脂,已收到国家知识产权局发明专利申请受理通知书。     

嘉诺推出有机硅专用不沾树脂替代特氟龙树脂

<正>常州市嘉诺有机硅有限公司研制成功了一种替代特氟龙树脂的产品,即有机硅专用不沾树脂,日前已获得国家知识产权局授予的发明专利。该产品将烷基氯硅烷和芳基氯硅烷的单体混合物水解     

混合树脂烧结修补料的高温流动性和硬化时间的研究

1 前言 转炉等冶炼用炉,其高温修补是提高窑炉寿命必要的技术。其中烧结修补料用于装入壁、炉底、出钢壁等水平方向的修补,利用废钢槽等投料,作业简便,取得了较好的效果。本文对速硬性、且发烟少的混合树脂烧结修补料进行了研究,其结果报道如下。 2 目的 改变混合树脂烧结修补料所使用的液体树脂的溶剂种类和树脂平均分子量,试验调查其     

汽车涂料用丙烯酸树脂(Ⅰ)

介绍了用于制备汽车OEM及修补涂料的丙烯酸树脂,当这两类丙烯酸树脂涂层所处位置是作底漆、中涂、底色漆或色漆以及罩光清漆时,涂层所起的作用也不一样,因而对这些涂层中的主要成分丙烯酸树脂的特性要求也不一样.通过分析提出了汽车涂料用丙烯酸树脂的设计要求.     

汽车涂料用丙烯酸树脂(Ⅱ)

介绍了用于制备汽车OEM及修补涂料的丙烯酸树脂，当这两类丙烯酸树脂涂层所处位置是作底漆、中涂、底色漆或色漆以及罩光清漆时，涂层所起的作用也不一样，因而对这些涂层中的主要成分丙烯酸树脂的特性要求也不一样。通过分析提出了汽车涂料用丙烯酸树脂的设计要求。     

卫生单元制品的修补和翻修涂装

一、成型时的修补在玻璃钢制品中占很大比重的是浴盆,其中包括用SMC成型的浴盆和用手糊成型或树脂注入法成型的卫生单元。但无论那一种,在大批量的生产情况下,都会产生必需修补的地方,而且在组装工程前还有修补破损部位的作业。大的修补有裂缝、微裂纹、铁陷、由于聚酯树脂填充不足造成的成型不均、胶衣层裂纹以及和树脂分离等,小的修     

氟树脂纤维ハステツクス的性能与应用

日本东洋（株）开发出ＦＥＰ、ＰＦＡ、ＥＴＦＥ三种氟树脂纤维,并上市出售。这些纤维是由１００％的氟树脂组成的细纤维。上市的纤维直径是以１５μｍ和２０μｍ为标准产品,现正开发更细纤维。 氟树脂,因为拉伸弹性模量较小,构成的纤维具有柔软感。该纤维同其它纤维混纺,即使氟树脂纤维含量少,也能保持氟树脂纤维的优异性能。氟树脂纤维可与羊毛、棉、丝、尼龙、聚酯等纤维混纺、加捻并股。因为属于全新的纤维品种,所以在加捻并股过程中,要寻找窍门。因氟树脂的特性所引发的下述事项必须考虑：１）极易带电;２）不粘性,不沾水、…     

搪瓷设备的PPS树脂修补技术

1前言PPS树脂在240～390℃的温度范围内于空气中进行热处理后发生氧化交联，交联后的PPSPS制件有效工作温度在290℃以上，170℃以下不溶于所有溶剂，在250～3O0℃不溶于烃、酮、醇等大部分溶剂，除了强氧化性的酸如氯磷酸、硝酸外，极耐酸、碱，甚至也不与沸腾的盐酸和氢氧化化钠发生作用，对于玻璃、陶瓷、钢材、铝等制品都有有极好的粘接力。自1994年以来，笔者进行了利用PPS树脂修补搪瓷设备的试验研究，取得了一定的进展，现将其修补工艺介绍如下。2修补工艺2.1硅烷偶联剂A0750醇水混合溶液配制95％的乙醇水溶液，边搅拌边加入5％…     

飞机复合材料结构件修补树脂的研究

飞机复合材料结构件在使用过程中会存在大量的损伤缺陷,将严重影响飞机的飞行安全和使用寿命,并造成严重的经济损失。本文采用多元胺作为主要固化剂,AFG90、AG-80等多官能度环氧树脂为基体树脂,以端氨基丁腈橡胶为增韧剂,制备出一种可在66℃或93℃固化的双组分飞机复合材料结构件修补树脂。通过补片胶接修复试验证明,该修补树脂具有良好的力学性能,能够在飞机复材结构件的修补领域发挥重大作用。     

搪瓷设备的PPS树脂修补技术

本文主要论述了利用ＰＰＳ树脂对搪瓷设备的修补技术,对修补工艺、修补面的耐腐蚀性能,影响涂层质量的主要因素作了介绍。实践证明,它是修补搪瓷设备的一种较理想的方法。     

Optimization of acrylic polyols for low VOC two-component water reducible polyurethane coatings using tertiary isocyanate crosslinkers

Polyol development is critical in order to develop a two-component waterborne polyurethane coating that can attain a 250 g/l VOC while maintaining performance requirements. This paper discusses a statistical study to develop a 250 g/l, two-component water reducible polyurethane coating using a tertiary isocyanate crosslinker with dry times and reactivity equivalent to a two-component solventborne system. The effects of acrylic molecular weight, glass transition temperature (T_g), and hydroxyl concentration on viscosity and dry time have been analyzed and statistical models identified that describe the relationships between these experimental factors and responses. Contour plots show tradeoffs between obtaining a low viscosity resin and maintaining fast dry time of the applied formulation. The data from the statistical study suggests that it is difficult to achieve the overall performance desired for an automotive refinish system with the simple four-component acrylic system investigated. The addition of either a longer chain hydroxyl functional monomer or styrene in the acrylic polyol improved the overall performance of the system. Faster cure was also demonstrated with an alternate catalyst.     

聚氨酯亮光清漆中羟基树脂的选择

采用羟基树脂、混合溶剂、助剂为A组分,含-NCO混合溶液为B组分制备双组分聚氨酯（PU）亮光清漆,通过羟基丙烯酸树脂、合成脂肪酸树脂、植物油改性醇酸树脂等一些常规羟基树脂的筛选搭配,制备性能较佳的PU亮光清漆,满足消费者需求.     

Novel techniques to investigate the impact of cellulose esters on the rheological properties and appearance in automotive basecoat systems

The viscous response of a coating formulation changes over several orders of magnitude after application onto a substrate. Furthermore, the performance and application attributes for a refinish basecoat formulation are slightly different from those of an OEM basecoat. The absence of a high temperature baking step during the refinish process necessitates that the paint exhibit very good antisag behavior as well as quick ‘dry to touch’ without compromising the flow and leveling properties of the coating as it dries. As most paint formulations are multicomponent in nature, it is always a challenge to precisely measure the impact of specific formulation components on the collective performance attributes of the applied coating. In this work, the focus has been to develop novel techniques that can be used to demonstrate a more quantitative measure of some of the performance attributes that rheological additives like cellulose esters can provide to automotive coatings. A series of pigmented basecoat formulations were prepared which contained cellulose acetate butyrates (CABs) of varying molecular weights at different levels based on the total solids of the coating formulation. The nonvolatile content of the formulations was also varied. The viscoelastic behavior of a typical automotive basecoat formulation during the drying process was then investigated using a novel rheological technique. Complex viscosity data (including storage and loss moduli as well as tan delta) were determined as a function of drying time and then compared to the macroscopic properties typically associated with a coating film as it dries. Thermogravimetric analysis (TGA) was also used to correlate the rheology of the metallic basecoat formulations with drying behavior of the coating. The final appearance of the coating was investigated by several microscopic techniques such as Laser Scanning Confocal Microscopy, Scanning Electron Microscopy, Atomic Force Microscopy, and Surface Profilometery, and attempts were made to correlate bulk measurements like ‘flop index’ with the microstructure of the coating. Presented at the 2006 FutureCoat! conference, sponsored by the Federation of Societies for Coatings Technology, in New Orleans, LA, on November 1–3, 2006.     

无溶剂双组分热喷快固化防腐涂料的研制与应用

针对我国石油沥青管道涂层的更新,及常用的环氧树脂类涂层和煤焦油磁漆涂层的补口,通过中间物质解决了石油沥青与环氧树脂的互溶性问题,研制出用于现场大修和补口的双组分厚浆型热喷快固化石油沥青聚氨酯涂料。采用高压无气喷涂,可作为新型重防腐涂料品种用于腐蚀防护领域。     

Effect of particle size distribution on the performance of two-component water-reducible acrylic polyurethane coatings using tertiary polyisocyanate crosslinkers

A two-component waterborne polyurethane system with a 250 g/l VOC has been formulated to meet the performance requirements of the automotive refinish market. This paper discusses an experimental study to develop a two-component water-reducible polyurethane coating using a tertiary aliphatic polyisocyanate crosslinker with dry times, appearance, and reactivity equivalent to a two-component solventborne system. The effects of acrylic polyol monomer composition, glass transition temperature (T_g), and hydroxyl concentration on drytime and ambient cure film performance have been determined. The effects of particle size distribution of the formulated coating on performance were examined. It was found that smaller particle size provides overall improved film properties, i.e., faster dry time, increased hardness, and faster development of solvent resistance. The relationships of both acrylic polyol composition and formulation variables on the particle size distribution are discussed. Presented at 76th Annual Meeting of FSCT in New Orleans, LA, on Oct. 11–16, 1998. 1937 West Main Street, Stamford, CT 06904.     

亚光清漆在车身上的应用和修补

随着大家对汽车外观表面的更多需求,亚光清漆也逐渐被使用.本文主要结合极星汽车厂的第一代跑车-Polestar 1的亚光清漆应用经验,对亚光清漆的作用机理,工艺流程和常见问题进行分析,完成亚光清漆的顺利投产.相较于高光清漆的应用,亚光清漆对洁净度和修补手法要求更高.     

羟基型水性聚氨酯的合成及其柔性水性木器清漆的制备

采用丙酮法利用聚酯二元醇（PE-1000）、二羟甲基丙酸（DMPA）、1,6-己二醇（HDO）、三羟甲基丙烷（TMP）和异佛尔酮二异氰酸酯（IPDI）反应,经中和、加水分散,合成出羟基型水性聚氨酯.并用制成的树脂和水性多异氰酸酯固化剂（Bayhydrol XP2655）以及消泡剂、流平剂、助溶剂等制备出柔性水性木器清漆.通过傅里叶红外光谱、差示扫描量热仪、热重分析仪、粒度仪、各种涂膜测试仪等仪器进行表征.测试结果表明：当树脂的数均分子量设计为5 000～6 000、DMPA的含量为4.5％～5.0％、HDO的含量为8.0％～10.0％、TMP的含量为5.0％～5.5％、中和度为1.0左右时制备出的树脂粒径、黏度和吸水率较小,贮存期l a以上.且条件范围内合成的水性木器清漆耐磨性好,丰满度高,柔软性佳,手感好,耐水、耐醇性好.     

溶剂及施工工艺对3C1B水性面漆外观影响研究

水性 3C1B（三涂一烘）工艺是以湿碰湿的方式喷涂水性中涂、水性面漆和清漆,并一次性烘干的工艺,可以显著降低能源损耗,提高生产效率。涂层外观是评价涂料质量和涂装效果的重要指标之一,而湿碰湿工艺的这种特殊的施工方式对涂层的外观表现更为敏感。本文以水性白实色涂料为例,从中涂、面漆的材料配方及施工工艺等方面对水性 3C1B汽车涂料的外观改进进行了研究,并识别出了关键影响因素,结果表明：水性面漆对漆膜整体外观的影响大于中涂;配方的干湿及喷涂雾化后的干湿对漆膜流平、流挂等影响较大,进而会影响漆膜的外观表现。     

丙烯酸改性醇酸磁漆的研制

采用功能性单体合成丙烯酸树脂,探讨了丙烯酸树脂与醇酸树脂的相容性原理,使丙烯酸树脂与醇酸树脂冷拼得到混容性极好的混合树脂.由该混合树脂配制的磁漆具有丙烯酸漆优良的户外耐候性和快干性,同时具有醇酸树脂漆优良的丰满度和高装饰性.     

水性紫外光木器涂料的研制

以水性UV丙烯酸酯树脂、水性UV脂肪族聚氨酯丙烯酸酯树脂为基料制备成水性紫外光木器涂料,经检测,水性UV涂装性能上大大得到改善,气味比普通UV涂料低、硬度比水性木器涂料高、表面效果与施工方法得到有效的改善,解决了水性木器、UV光固化涂料在喷涂技术领域遇到的技术瓶颈。