烟用接装纸中六价铬的测定

建立了采用IC与ICP-MS联用测定烟用接装纸中六价铬的方法。采用磷酸氢二钾溶液萃取烟用接装纸中六价铬,然后用IC-ICP-MS分析。六价铬加标回收率83.7%~102.2%,RSD为7.2%,线性相关系数0.9998,检出限达到0.05mg/kg。本方法检出限低、准确度高、精密度好、简便快捷,适用于烟用接装纸中六价铬含量的检测。     

苯乙烯-叔碳酸乙烯酯-丙烯酸酯共聚合微乳液的合成与应用

通过选择合适的乳化体系及合成工艺,制备了具有高光泽度、耐磨、耐色变性能的苯乙烯-叔碳乙烯酯-丙烯酸酯共聚合微乳液涂层树脂,应用于印刷无溶剂上光油、高层建筑外墙水性涂料基础乳液及木器透明漆等。     

浅谈烟包凹版印刷用水性油墨的配方设计

本配方设计过程中采用特殊工艺制作水溶性树脂液,并遴选国内外功能助剂及颜料制作出水性油墨用色浆;对水性色浆采用乳液型树脂及相关功能助剂进行调整,制作出满足烟包凹版高速印刷的水性油墨。     

高抗回黏性水性木制玩具漆的研制

选择合适的乳液、助剂制备了高抗回黏性水性木制玩具漆。探讨了不同的乳液体系及助剂的使用对漆膜抗回黏性的影响。     

油墨与相关技术

200801230 高精度印刷用活化能固化油墨及其印刷方法;200801231 转移印刷用的乙烯基醇聚合物带基薄膜及其制备和采用该基膜的水压转印工艺;200801232 活化能射线固化水性喷印油墨;200801233 PVC膜用形成无光印刷品的水性凹版印刷油墨组合物;200801234 水性油墨用聚酰胺树脂乳液的研究制备……     

一种碳纤维用复合型水性乳液上浆剂及其制备方法

正本发明公开了一种碳纤维用复合型水性乳液上浆剂及其制备方法,所述碳纤维用复合型水性乳液上浆剂由水性改性环氧树脂乳液、热塑性树脂和的增韧助剂按照配比制得。本发明所制备的水性复合乳液上浆剂相溶性好,吸附和浸润碳纤维能力强,储存时间长,碳纤维上浆后上浆量     

丙烯酸酯类水性上光油的研制

以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、丙烯酸(AA)和丙烯酸羟乙酯(HEA)为共聚单体,N-羟甲基丙烯酰胺(N-MAM)为交联单体,采用半连续核/壳乳液聚合法制备水性N-MAM改性丙烯酸酯树脂;然后以此为连接料和基体树脂,并引入WT-204(水性流变助剂)、乙醇等助剂,制备水性上光油。研究结果表明:该水性上光油具有良好的成膜性能;当w(WT-204)=1.0%³.5%(相对于树脂乳液质量而言)时,水性上光油的黏度为203.5%(相对于树脂乳液质量而言)时,水性上光油的黏度为20⁵0 s、光泽度为80%50 s、光泽度为80%¹20%,并且其各项性能符合高光泽水性上光油的标准要求;当w(乙醇)=1%(相对于树脂乳液质量而言)时,水性上光油的干燥效果相对较好。     

日本开发新型新闻油墨

日水东洋油墨制造公司与朝日新闻西部总公司共同开发成功一种乳液新闻油墨。该油墨比油性油墨的印刷效果要好得多。它是由特殊的油性成分与水性成分制成的,属W/O型乳液。其特点是:(1)可以大大减少渗油现象;(2)油墨向纸的转移性好,可获得与胶版印刷相似的印刷效果;     

水性油墨连结料对PVC印刷耐光色牢度的影响

为了研究水性油墨连接料对聚氯乙烯(PVC)塑料耐光色牢度的影响,采用乳液聚合法和共混法制备了水性丙烯酸树脂乳液和水性聚氨酯–丙烯酸树脂乳液两种水溶性树脂作为水性油墨连接料,分别配制成水性油墨并印刷到PVC塑料表面。利用傅立叶变换红外光谱和扫描电子显微镜等检测手段分析了水性油墨连接料影响PVC塑料印刷耐光色牢度的原因。测试结果表明,水性聚氨酯–丙烯酸树脂乳液配制的水性油墨在耐光色牢度、附着牢度、耐水性能方面都比水性丙烯酸树脂乳液配制的水性油墨更优秀;而在细度、黏度、初干性、着色力、pH值性能方面两者相同。水性聚氨酯–丙烯酸树脂乳液配制的水性油墨的耐光色牢度用灰色样卡等级进行评价,其灰色样卡等级为4级,色差为1.7～1.9;而水性丙烯酸树脂乳液配制的水性油墨的灰色样卡等级仅为3～4级,色差为2.5～3.4。     

日本开发新型新闻油墨

日本东洋油墨制造公司与朝日新闻西部总公司共同开发成功一种乳液型新闻油墨。这种新型油墨比油性油墨的印刷效果要好得多。过去的报纸凸版轮转印刷油墨几乎都是油性的,主要由炭黑、石油系溶剂和油溶性树脂等组成,由于对纸的浸润性高,存在着易渗油、易掉色等缺点。此次开发成功的新型油墨是由特殊的油性成分与水性成分制成的W/O型乳液,它有效     

环氧树脂防粘涂料的研究

研制了一种以环氧树脂为基料,聚四氟乙烯为防粘剂,二硫化钼为润滑剂的常温固化防粘涂层。通过正交实验与极差分析,对涂层性能作了较为深入的研究,筛选出最优的涂料配方。结果表明,该涂层具有优良的防粘性,硬度和附着力。     

生漆成膜的分子基础——Ⅰ生漆成膜的物质基础

生漆是从漆树皮层采割的天然树脂,主要由漆酚、漆酶、多糖、糖蛋白以及水分、金属离子等物质组成,是一种油包水型反应性生物基微乳系统,是生漆成膜的物质基础。本文主要讨论了生漆的组成与结构特点。     

Development of bio-based hybrid resin,from natural lacquer

Preparation and structure analysis of a bio-based hybrid material composed of natural lacquer, epoxy, and organic silane compounds were investigated using liquid and solid-state nuclear magnetic resonance. The good composition of additives in the hybrid was determined by the drying, hardness, and resin-molding properties. Although natural lacquer alone cannot form thick resins, this bio-based hybrid material showed good resin formation at room temperature without thermal treatment. This result could be based on the enhancement of curing by the sol–gel reaction between natural lacquer and the organic silane compound, and a crosslink reaction between organic silane and epoxy groups. At the same time, oxidative polymerization at the unsaturated side chains in the urushiol was enhanced by the sol–gel reaction because the catechol hydroxyl groups, which have an antioxidative property, reacted with the organic silane. In addition, this bio-based resin possesses a thermoset property because curing of the hybrid was improved by thermal treatment. Based on the structure analyses, the sol–gel reaction between urushiol and organic silane compound proceeded immediately, indicating the high reactivity of this sol–gel reaction. On the other hand, the reaction between bisphenol A-type epoxy resin and the organic silane seems to progress slowly after the epoxy ring opening. In addition, a sol–gel reaction occurred between the amine group in the organic silane and the hydroxyl group formed after the crosslink reaction of the epoxy group. These results suggested that the improvement in drying and molding properties of the hybrid was based on the chemical reactions among all components (i.e., natural lacquer, epoxy, and organic silane).     

天然生漆改性研发进展

从漆树采割的天然生漆是一种天然树脂,具有优良的耐腐蚀性、耐久性等性能,在我国有着上千年的应用史。作为生物资源的生漆,在当今对于环境保护和资源利用有着重要意义。详细介绍了天然生漆的研究进展,寻找开发生漆应用的新途径。     

氯化丁基橡胶阻尼材料动态力学性能的影响因素研究

利用DMA242热机械分析仪,研究了增粘树脂类型、高耐磨炉黑用量、测试频率等因素对氯化丁基橡胶阻尼材料动态力学性能的影响。结果表明,增粘树脂对材料动态力学性能具有显著影响,加入3^#增粘树脂材料的损耗因子峰值最大,损耗因子峰值温度最高;随着高耐磨炉黑用量增大,材料的损耗因子峰值降低、损耗因子峰值温度升高;随着测试频率由3．33Hz到1．66Hz逐渐减小,材料的损耗因子峰值温度逐渐降低,损耗因子峰值逐渐减小。     

松香改性豆油酸醇酸树脂的合成研究

以大豆油脚为原料提取豆油脂肪酸,并依此研究了松香改性豆油酸醇酸树脂的合成.获得的树脂和漆产品性能良好,降低了污染和能源消耗,较天然桐油和亚麻油等原料有明显优势,经济效益高.     

Effects of polysaccharides on the properties of Chinese lacquer sap

Raw lacquer sap was modified by the addition of small amounts of 2 wt% polysaccharide (lacquer polysaccharide, chitosan, carboxymethyl cellulose and sodium alginate) aqueous solution. The polysaccharide-modified lacquer saps dried faster than raw lacquer sap at a high relative humidity of 80%. The drying property strongly depended on the structure of polysaccharides and the drying time was in the order of chitosan < carboxymethyl cellulose < sodium alginate < lacquer polysaccharide. All lacquer saps did not dry at a very low relative humidity of 16%. However, when the relative humidity was adjusted to 70%, the polysaccharide-modified lacquer saps dried, while the raw lacquer sap did not. This difference was probably due to stronger hydrophilicity of polysaccharide-modified lacquer films’ surfaces. In addition, the addition of polysaccharides greatly improved the gloss of lacquer films, but had little effects on the thermal, mechanical and chemical resistance properties of lacquer films.     

铁路货车用环氧沥青玻璃鳞片涂料的研制

探讨了环氧树脂与煤焦沥青配合比例、固化剂、玻璃鳞片的规格与用量、惰性填料与触变剂等因素对涂层力学性能、耐磨性、防腐性和施工性能的影响,通过试验得到了各种合适的配比,既提高涂层性能,又降低成本。     

Preparation and properties of raw lacquer/multihydroxyl polyacrylate/organophilic montmorillonite nanocomposites

Raw lacquer (RLA) has been widely used indoors for centuries in Asia. But its weak UV-resistant property limited its outdoor application. In this article, the UV-resistant property of lacquer film was significantly improved by solution intercalation method. The intercalated nanocomposites were obtained from RLA, multihydroxyl polyacrylate resin (MPA), and organophilic montmorillonite (OMMT). The structure and morphology of the RLA/MPA/OMMT nanocomposites were confirmed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The variation of the film gloss and impact strength with different UV exposure time was also investigated. Owing to the dispersion of nanometer-sized OMMT in polymer matrix, the RLA/MPA/OMMT nanocomposites exhibited improved UV-resistant property. When the OMMT content is 3.0 wt%, the best physical–mechanical properties can be obtained. These results indicated that the solution intercalation with nanoparticles was an efficient and convenient method to improve the properties of raw lacquer.     

阳图热敏CTP版涂层中树脂种类对润版液的影响

目前,阳图热敏CTP版材在印刷行业中已经广泛使用,为了指导其在印刷过程中的正确使用,提高耐印力,本文研究了专利中介绍的阳图热敏CTP版材的感光涂层组分中不同种类的成膜树脂和添加树脂在异丙醇中的溶解速率和溶解度差异,主要研究了以上不同种类的树脂按照一定配方制成版材后的抗醇性、耐磨性模拟耐印力检测实验的方法和抗醇性、耐磨性和模拟耐印力实验检测的性能差异。实验结果表明:不同种类的成膜树脂和添加树脂在异丙醇中的溶解速率和溶解度不同,制成版材后版材的抗醇性也不同,溶解速率和溶解度大的树脂制成的版材抗醇性差,但是耐磨性和醇中的溶解性并无直接关系。通过对以上结果分析,影响阳图热敏CTP版材耐印的因素中抗醇性和耐磨性是两个重要的方面,其中耐醇性占主要作用。不同种类的阳图热敏CTP版材在印刷过程中对使用的润版液的异丙醇耐受力不同,根据溶解度参数理论,指导研发过程中树脂种类的筛选和优化,同时指导正确使用润版液,尤其控制好醇类使用量可以克服版材在印刷过程中掉版和耐印力低的问题。指出了阳图热敏CTP版材在印刷过程中向着使用无醇润版液的趋势发展,于此同时阳图热敏CTP版材的研制向着提高抗醇性的方向发展,为印刷业的发展提供更宽广的选择性。