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环保塑料脱漆剂的研制 总被引:1,自引:0,他引:1
介绍了一种新型环保塑料脱漆剂的研制.讨论了主溶剂、促进剂的选择,以及脱漆温度对脱漆效率的影响.试验结果表明:以有机氮化舍物及含硫化合物类溶剂混合作主溶剂.与自制的促进剂复配,能够快速脱除多种基材表面的多数有机涂层,且不不破坏塑料基材.该脱漆剂属低VOC、不易燃、可生物降解的塑料基材脱漆荆,脱漆后的基材再次涂装不影响附着力. 相似文献
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低毒低挥发性脱漆剂的研制 总被引:1,自引:0,他引:1
以甲基丙烯酸甲酯为主溶剂,苯甲醛为助溶剂,有机酸为促进剂,OP-10为表面活性剂,硫脲为缓蚀剂,液体石蜡为封闭剂,制备了一种针对丙烯酸涂层的低毒、低挥发性的脱漆剂。分别研究了主、助溶剂配比,甲酸含量及表面活性剂含量对脱漆剂脱漆效果的影响,同时研究了液体石蜡含量对脱漆剂挥发速度的影响。结果表明,当甲基丙烯酸甲酯的质量分数为65.25%,苯甲醛为21.75%,OP-10为2%,有机酸为2%,硫脲为2.5%,液体石蜡为6%时,所得脱漆剂的脱漆效果好,毒性、挥发性和腐蚀性低。 相似文献
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改性高氯化聚乙烯甲板漆的研制 总被引:6,自引:0,他引:6
采用成本低而性能好的高氯化聚乙烯( HCPE) 进行改性,作为主要成膜物,配制附着力好、防腐蚀性优异、耐磨性高的改性HCPE 甲板漆。介绍了该甲板漆及配套底漆的配方及其制漆工艺步骤。比较了不同改性树脂所得甲板漆的性能,以聚氨酯改性HCPE 甲板漆的性能为最佳。也讨论了颜料体积浓度、溶剂、助剂等对涂料性能的影响。 相似文献
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The main objective of this study is to investigate the barrier mechanisms and properties of polyethylene, polyethylene (PE)/polyamide (PA) and polyethylene/modified polyamide (MPA) bottles against paint solvent permeation. In addition to the paint mixed solvent, the barrier properties of these bottles against the permeation of pure main solvents contained in the paint mixed solvent were investigated to understand the permeation mechanisms of the paint solvents. The paint solvent permeation resistance improves dramatically after blending PA and MPA barrier resins in PE matrices during blow‐molding. In fact, by using proper compositions, the white spirit permeation rates of PE/MPA and PE/PA bottles at 40°C are about 360 and 50 times slower than that of the PE bottle, respectively. Further investigations showed that, after blending the MPA and PA barrier resins in PE matrices, the hydrocarbon solvents present in the white spirit were nearly blocked without permeation during the permeation tests, i. e., PE/MPA bottles inhibited the permeation of hydrocarbon solvents more successfully than PE/PA bottles. In contrast, the rates of polar solvents with ketone, ether and alcohol functional groups permeating through the PE bottles are much slower than that of the white spirit and only slightly faster than those through the PE/PA and PE/MPA bottles. On the other hand, the paint mixed solvent permeation rates of PE bottles are approximately equal to the summation of permeation rates of the solvents present in mixed solvents calculated using a simple mixing rule. Somewhat surprising, the permeation rates of mixed solvents of PE/MPA bottles are dramatically faster than those calculated using a simple mixing rule, when the polar solvent contents are in a certain range. 相似文献
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针对不常用的个性化小颜色汽车涂装中存在的换色时间长、生产效率低、清洗困难、油漆
及溶剂大量浪费等问题,在分析了汽车喷漆生产工艺流程及设备功能要求的基础上,设计了一套基于可编程逻辑控制器( PLC)的快速换色控制系统。具体分析了快速换色控制系统的硬件组成及工作原理,详细介绍了控制系统中 PLC主程序的控制流程,设计了控制系统人机交互界面。该控制系统以 S7-1500 PLC作为主控单元,以人机界面(HMI)触摸屏作为人机交互界面,运行指令程序驱动电磁阀动作,实现油漆快速换色控制。该控制系统已投产使用,结果表明:该控制系统可大大缩短换色时间,提高生产效率,回收约 85. 7%的油漆可再次使用,较传统的循环管路式系统节约了 82. 8%的清洗溶剂。 相似文献
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