共查询到20条相似文献,搜索用时 750 毫秒
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我国聚氯乙烯行业现状与发展趋势 总被引:2,自引:0,他引:2
介绍了近年我国PVC树脂生产能力、产量、消费量、进出口,列出了主要企业产能,并与世界和日本、德国、美国的一些情况进行了比较。总结了我国PVC行业的特点,并提出了几点看法。 相似文献
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《化学工业与工程技术》2019,(1):17-23
介绍了丁二烯装置溶剂精制工艺流程,分析了溶剂精制系统中产生的焦油、丁二烯二聚物及废水三大污染源及其危害。制定并实施了工艺改进措施,经过改进排焦工艺、丁二烯二聚物脱除工艺、溶剂精制系统脱水工艺,实现了排焦作业密闭操作、减少了作业过程带来的现场异味污染、消除了焦油池内人工开挖焦油带来的高风险作业、减少了装置废渣生成量、COD排放总量得到了控制,达到了净化溶剂品质、规避环保风险、节约资源、环境友好的生产目标,提高了装置运行质量,同时丁二烯二聚物污染源转化为副产品销售,增加了装置的经济效益。 相似文献
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聚乙烯醇缩丁醛树脂的研究与应用 总被引:4,自引:0,他引:4
综述了聚乙烯醇缩丁醛树脂的生产原理、一步法、二步法生产工艺以及溶解法、沉淀法生产工艺, 并对不同生产工艺进行了比较;介绍了聚乙烯醇缩丁醛树脂的结构与性能的关系以及其在安全玻璃、胶粘剂、陶瓷花纸等领域的应用;概述了国内外发展现状、新技术的应用状况,展望了技术、应用的发展动态。 相似文献
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正本书比较全面地介绍了国内外粉末涂料与涂装的概况,详细介绍了粉末涂料的分类、品种、大量列举了粉末涂料基本配方组成;还论述了粉末涂料配方设计的基本思路;详细介绍了粉末涂料的制造设备和生产工艺、粉末涂装方法的分类;重点叙述了静电粉末涂装的设备和工艺、粉末涂料与涂装中的安全、卫生等问题;还介绍了粉末涂料与涂膜的检验方法。 相似文献
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主要介绍了醚化反应的机理,明确了反应温度、反应压力、醇烯比、空速等参数对异丁烯与甲醇反应生成甲基叔丁基醚(MTBE)这一个可逆放热反应的影响。从而优化了操作条件,该善了MTBE产品及醚后碳四产品质量、降低了生产成本、提高了经济效益。 相似文献
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水性油墨用高性能遮盖性丙烯酸型乳液的研制 总被引:5,自引:0,他引:5
采用分步聚合的方式,合成出核/中间层/壳三层结构的丙烯酸型乳液,经过溶胀处理后,通过一定的光学作用,使乳液在干燥后具有很好的遮盖效果。用这种遮盖性乳液配制成的水性油墨具有良好的综合性能。 相似文献
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《Ceramics International》2020,46(14):21910-21919
Two diblock polymer dispersants (i.e., PMAA-b-AMPS and PSSS-b-GMA) were synthesized and used as water-based dispersants for dispersion and stabilization of waterborne ceramic ink with submicron-sized praseodymium-doped zirconium silicate (Pr-ZrSiO4) pigment. The color property, dispersion, and stability of the pigment particles in aqueous suspension were determined by colorimetry, laser particle size analysis, and sedimentation test. The adsorption mechanism of carbon chains of dispersants on the particle surface was analyzed by Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and electrokinetic potential measurement. Also, the viscosity, surface tension and stability of waterborne ceramic ink with the pigment particles were measured by rheometry, surface tension analysis and standing settlement. The results show that the submicron-sized pigment particles in waterborne ceramic ink show optimum dispersibility and stability at 5 wt% addition of diblock polymer dispersants PMAA-b-AMPS and PSSS-b-GMA mixed in a mass ratio of 9:1. This could be since the mixed dispersants provide the more interparticle electrostatic repulsion and steric hindrance energies due to the proper adsorption on the particle surfaces. It is indicated that adding 20 wt% of diethylene glycol monobutyl ether into the waterborne ceramic ink can effectively enhance the viscosity and reduce the surface tension, thus satisfying the applied requirements in inkjet printing. In addition, the jettability of waterborne ceramic ink on a simulated ceramic green body was also evaluated based on semi-empirical analysis. 相似文献
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本文综述了水性油墨高分子连接料的发展动态。在环境保护压力的推动下,油墨逐渐向水性化方向发展,水性连接料一直存在着复溶性与耐水性的矛盾,为适应油墨分散介质的改变,连接料从与溶剂型同系物最接近的碱可溶乳液发展为复合型、反应型乳液。水性油墨连接料的许多性能比相应的溶剂型同系物有一定差距,水性高分子结构与性能的研究及在水性油墨中的应用是水性油墨发展的关键。 相似文献
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以聚酯多元醇、甲苯二异氰酸酯和二羟甲基丙酸为主要原料,采用环氧树脂改性制备出稳定的水性聚氨酯油墨连结料。水性油墨连结料的红外光谱分析说明合成了水性聚氨酯结构油墨连结料;差示扫描量热法测试表明环氧树脂复合改性增加了涂膜交联度,涂膜玻璃化转变温度(Tg)明显提高;粒径分布分析说明经过环氧树脂改性水性聚氨酯树脂的粒径分布变宽;热失质量分析说明环氧树脂改性增加了涂膜的耐热性;水性聚氨酯油墨性能测试说明水性油墨连结料PUIV-1的基本性能优于所用的水性丙烯酸连结料。 相似文献
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环保乳化生产的油墨,是以少量的油包大量的水而形成的稳定的W/O型乳状液,并且具有良好的油墨的基本性能和印刷性能,甚至优于油性油墨的印刷性能。这样生产的油墨,含水率高,工艺简单、安全性好。用大量的水代替油,不仅有着突出的经济效益,而且社会效益也相当显著。对油墨行业起着很好的引导作用,是未来油墨行业的发展方向。所有的原料均无毒,是非常好的绿色产品。 相似文献
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The properties of a thickener for nylon carpet inkjet printing are presented in this work. A water-based ink was prepared from polyacrylate-based thickener. The physical and chemical properties of the polyacrylate-based thickener used for preparing the inkjet printing ink, as well as its printing effects on carpet, were investigated. Before printing, the properties of the ink, including its surface tension, electrolyte resistance, storage stability, and percentage removal, were investigated. After printing, the efficiency of coloration of printed carpet and the fastness of printed carpet were studied. The results concerning the surface tension and percentage removal of printing ink show that the polyacrylate-based thickener printing ink is suitable for nylon carpet inkjet printing. Meanwhile, its storage stability and electrolyte resistance make it suitable for printing. The efficiency of coloration of printed carpet and the fastness of printed carpet satisfy the requirements of application at appropriate ink concentration and viscosity. 相似文献