PVC在加工时熔化温度是一个非常重要的工艺参数,如果此参数不当将导致材料分解的问题。 PVC的流动特性相当差,其工艺范围很窄。特别是大分子量的高速护坡模具更难于加工,因此通常使用的都是小分子量的PVC材料。 PVC的收缩率相当低,一般为0.2~0.6%。
The melting temperature of PVC during processing is a very important process parameter, and improper use of this parameter can lead to material decomposition issues. The flow characteristics of PVC are quite poor, and its process range is very narrow. Especially high molecular weight high-speed slope protection molds are more difficult to process, so small molecular weight PVC materials are usually used. The shrinkage rate of PVC is quite low, generally ranging from 0.2 to 0.6%.
高速护坡模具通常不需要干燥处理。熔化温度保持在185~205℃ 之间,模具温度:20~50℃就可以,同时注射压力可大到1500bar 保压压力,可大到1000bar 注射速度,为避免材料降解,一般要用相当地的注射速度。
High speed slope protection molds usually do not require drying treatment. The melting temperature should be maintained between 185~205 ℃, and the mold temperature should be between 20~50 ℃. At the same time, the injection pressure can be as high as 1500bar for holding pressure and as high as 1000bar for injection speed. To avoid material degradation, a relatively high injection speed is generally required.
高速护坡模具是一种最为常见的塑料材质,它们柔韧而透明的效果,不仅能够给制成品带去一份产品上的优势,还能够为制成品提供更好的性能,比如防划,耐磨等。
High speed slope protection molds are one of the most common plastic materials. Their flexible and transparent effects not only give finished products a product advantage, but also provide better performance, such as scratch resistance and wear resistance.
高速护坡模具在各国之间成长很快,聚乙烯模具才多数运用在水利和燃气领域,聚乙烯模具材因其特殊的制造技术,逐渐取代了传统钢模具等金属模具材。然而因为技术更新的速度不断加快,使得聚乙烯模具材的优势更加完善,使传统模具材在适合采用这种材料的场合没有了立足之地。相信在将来塑料模具材技术的发展进步将使得塑料模具的更好的应用到各个行业中去。
High speed slope protection molds have grown rapidly among countries, and polyethylene molds are mostly used in the fields of water conservancy and gas. Polyethylene mold materials have gradually replaced traditional metal mold materials such as steel molds due to their special manufacturing technology. However, due to the accelerating pace of technological updates, the advantages of polyethylene mold materials have become more perfect, leaving traditional mold materials without a foothold in situations suitable for using this material. I believe that in the future, the development and progress of plastic mold material technology will enable better application of plastic molds in various industries.