PP K4515台化价格 货源充足
价格：9.00起
产品规格：
产品数量：
包装说明：
关 键 词：K4515台化价格,PP
行 业：塑料 通用/工程塑料 工程塑料
发布时间：2021-05-20
The main business of Taihua plastics division is polystyrene (PS), ABS, ASA, San (styrene acrylic co polymer), polypropylene (PP), polycarbonate (PC) and so on Due to the active market expansion and the completion of the upstream raw material plants of Liuqing, the manufacturing and sales of PC / ABS and other comite adhesives have formed a strong integration between upstream and downstream. Looking forward to the future, the marketing of our products is expected to continue to grow. We hope that the company's products can provide reliable quality, stable material source and reasonable price of high-quality raw materials and technical support for China's plastic downstream processing industry, and jointly improve the overall situation To strive for the competitiveness of the industry.
PP的优点：
PP虽然比回收PE有较高的机械强度和模量，但是像新PP树脂一样，回收PP的耐冲击性能尤其是耐应力开裂性能差，且低温性能差。这些性能特征是由PP聚集态结构和大分子链构造决定的，因此可用聚进行改性。回收PE(LDPE、HDPE)与收PP制共混物时，如果PP回收料比较多，可以直接制备合金，如在PP 中掺人10％一25％HDPE，其改性后的共混物在—20℃时落球冲击强度比PP提高8倍以上，而且加工流动性增加，可适用于大型容器的成型。从结构上来说PE的加入破坏了PP的结晶如大球晶碎化，也降低了PP的结晶度；若在体系中再加入EPDM。约5％可提高PP与PE的相容性，强度得到提高；加入少量EPR橡胶也可提高材料的冲击性能。
Although PP has higher mechanical strength and modulus than recycled PE, the impact resistance, especially stress cracking resistance, and low temperature performance of recycled PP are poor, like the new PP resin. These properties are determined by the aggregation structure and macromolecular chain structure of PP, so it can be modified by polyethylene. When the blends of recycled PE (LDPE, HDPE) and PP are made, if there are more recycled PP materials, the alloy can be directly prepared. For example, if 10% - 25% HDPE is added into PP, the impact strength of the modified blend is increased by more than 8 times than that of PP at - 20 ℃, and the processing fluidity is increased, so it can be applied to the molding of large containers. In terms of structure, the addition of PE destroys the crystallization of PP, such as the fragmentation of macrospherulites, and also reduces the crystallinity of PP; if EPDM is added into the system, the crystallization of PP is also reduced. About 5% can improve the compatibility of PP and PE, and the impact strength can also be improved by adding a small amount of EPR rubber.
PP分子中存在叔碳原子，在光和热的作用下极易断裂降解。未加稳定剂的PP在150℃下被加热半小时以上，或在阳光充足的地方曝晒12天就会明显变脆。未加稳定剂的PP 粉料在室内避光放置4 个月也会严重降解，散发出明显的酸味。在PP粉料造粒之前加入0.2%以上的抗氧剂可以有效地防止PP 在加工和使用过程中的降解老化。抗氧剂分为游离基链反应终止剂（也称主抗氧剂）和过氧化物分解剂（也称辅抗氧剂）两大类，主、辅两类抗氧剂的合理配合，将会发挥良好的协同效果。PP在离开口模后，如果是在空气中缓慢冷却，就会生成较大的晶粒，制品透明度低
There are tertiary carbon atoms in PP molecules, which are easily broken and degraded under the action of light and heat. PP without stabilizer will become brittle when heated at 150 ℃ for more than half an hour or exed to sunlight for 12 days. PP powder without stabilizer will degrade seriously and emit obvious acid taste when stored indoors for 4 months. Adding more than 0.2% antioxidant before PP powder granulation can effectively prevent degradation and aging of PP during processing and use. Antioxidants can be divided into two categories: free radical chain reaction Terminator (also known as the main antioxidant) and peroxide decomition agent (also known as auxiliary antioxidant). The reasonable combination of the main and auxiliary antioxidants will play a good synergistic effect. If PP is cooled slowly in the air after leaving the die, it will produce larger grains and the transparency of the product is low
Taihua PP resin (tiripro? PP resin) adopts the CHISSO gas-phase process method of Japan, uses a new generation of high activity catalyst and strict quality management system, with an annual output of 510000 tons. It can produce homopolymer and copolymer, supply injection, extrusion, fiber, blowing, vacuum molding and other processing industries. It is widely used in household appliances, auto parts, food packaging, toys and people's livelihood products.
