PVC resin is a polar non-crystalline polymers, density: 1.380 g / cm, glass transition temperature: 87 ℃ pvc shaped tube member supply, poor thermal stability and therefore, difficult to process. Can not be used directly, must be modified mixed pvc Pipes Price, add the relevant additives and fillers can be used. And because of different additives and added to the relevant type and filler fraction, which determines the material properties and the requirements of PVC prepared is not the same. We usually call it PVC formulations, strictly speaking is modified PVC formulations, but only after a modification to use PVC. This category is often classified as a polymer modified materials. Studies of polymer materials modified plastics primarily focus on high performance general-purpose, single-component materials to the multi-component composite material change (alloys, blends, composites), giving the material functions, optimization of performance and price and so on. Modified method is mainly chemical modification, filling modification, enhancement modification, blending modification and nano-composite modified. The basic principle is modified by providing material additives function or enhance certain properties. Therefore, compete with PVC formulation technology, determines a plant technology and production capacity to compete. Industrial polyvinyl chloride resin mainly amorphous structure, but it also contains some crystal regions (about 5%) pvc shaped tube member manufacturers, so there is no clear PVC melting point of about 80 ℃ begins to soften, heat distortion temperature (1.82 Under load MPa) for 70-71 ℃ pvc Pipes pieces at 150 ℃ under pressure begins to flow, and began a slow release hydrogen chloride, resulting in PVC color (from yellow to red, brown, or even black). Industrial PVC weight average molecular weight in the range of 4.8-4.8 million and a corresponding number average molecular weight of 2-1.95 million. The vast majority of industrial resin weight average molecular mass of 10-20 million and the number average molecular weight in the 4.55-6.4 million. Rigid PVC (unplasticized) has good mechanical strength, weather resistance and flame resistance, can be used alone as structural materials used in chemical manufacturing pipes, sheet metal and plastic injection products. Rigid PVC can be used to enhance the material. Qingdao Yixingguan pieces pvc, pvc shaped tube fittings, sea Widex Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) strong, credible, in Qingdao, Shandong industrial products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sea Widex and you work into the brilliant, for a better future!