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PVC发泡板的原材料选用方法
作者:admin 来源:本站 发布时间:2018-05-17 11:43:30 浏览次数:374
1、PVC一般选用8型树脂,加工时凝胶化速度快,加工温度相对较低,产品质量稳定,密度容易控制。
1. PVC generally selects 8 type resin. When processing, the gelatinization speed is quick, the processing temperature is relatively low, the product quality is stable, and the density is easy to control.
2、稳定剂的选用,考虑到环保且效果好首选稀土稳定剂,但因价格相对高,没有推广开来,未来随着环保的要求力度加大,稀土稳定剂的市场将迎来光辉前景。钙锌稳定剂存在锌烧问题以及稳定效果略差用量也较少。目前应用最多的还是铅盐稳定剂,发泡板因模具横截面宽、流道长且黄发泡分解产热多,要求稳定剂含铅量高,稳定效果好,否则制品容易出现各种问题。

2, the selection of stabilizers, considering the environmental protection and the effect of the first choice of rare earth stabilizers, but because the price is relatively high, no promotion, the future with the environmental requirements, the market for rare earth stabilizers will usher in a glorious future. Zinc and zinc stabilizers have problems of zinc burning and poor stability. At present, the most widely used stabilizers are lead salt stabilizers. Because of the wide cross section of the mould, the long flow path and the decomposition of the yellow foam, the foaming board requires a high amount of lead in the stabilizer and good stability. Otherwise, the products are easy to have a variety of problems.

3、山东挤塑板发泡剂的选用,发泡剂AC在分解过程中放出大量的热,容易导致断面中间发黄,这就要求配合一定量的白色发泡剂,分解起到吸收多余热能的作用,要求发泡剂目数要大,才能做到发泡均匀无大泡孔。
3, the selection of Shandong Extrusion board foaming agent, the foaming agent AC in the process of releasing a large amount of heat, easily lead to the yellow cross section, which requires a certain amount of white foaming agent, decomposition to absorb the effect of excess heat energy, demand foaming agent to large number, can achieve foaming even without large bubble holes.
4、润滑剂的选用遵循初期中期后期润滑兼顾原则,让物料在各个阶段均有润滑剂的保护,坚持长时间稳定生产而不析出结垢。
4, the selection of lubricants follows the principle of lubrication in the middle and late stage of the early stage, so that the material has the protection of lubricants at all stages, and persists in stable production for a long time without precipitating fouling.
5、填充剂,选用轻质碳酸钙即可,无需使用活性钙,选用以高目数为主。
5, filler, choose light calcium carbonate, no need to use active calcium, choose high mesh.
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