|品牌：进口 ||产品规格：齐全 |
|产地：广东东莞市 ||包装说明： |
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≈ TPE新加坡 APEXTB-6000-60***Filling modified PP production process, its main engine is mixed type extruder, can use different screw forms according to the different needs. Double screw extruder or wavy screw extruder or double corrugated single screw extruder used normally, only in special material production by twin-screw extruder, but the use of calcium carbonate filled or filled with talc, the selection of a single screw or double wave screw extrusion equipment can achieve.
By means of mechanical method, other polymers are added into the generated polymers to make their performance changes known as blending modification.
Modification effect modified with additives
≈ TPE新加坡 APEXTB-6000-60***PP
Fiber - like materials are added to the plastic, which can significantly improve the strength of the plastic material, which is called enhanced modification. The material with large diameter to thickness ratio can significantly improve the flexural modulus (rigidity) of the plastic material, and it can also be called the reinforced modification.
Glass fiber is the main reinforced material, which can significantly improve the tensile strength of PP plastics. The glass fiber content is generally not more than 40%. It is generally believed that the fiber has a modified effect when the fiber length is more than 0.2mm, and the glass fiber has a better effect when the diameter of the fiber is more than ten microns. When the glass fiber content is increased, the processing fluidity of the reinforced PP is decreased, but it is still a good fluidity plastic.
The glass fiber reinforced PP can improve the mechanical strength and heat resistance, and glass fiber reinforced PP steam resistance, chemical corrosion resistance and creep resistance are good, in many cases can be used as engineering plastics, such as fan blades, impeller pumps, heaters, grille lamp, electric heater and shell etc.. Appraisal
It is easy to identify whether it is polypropylene, and to distinguish homopolymer, copolymerization and random polypropylene by infrared spectroscopy (FTIR). The simplest way to identify everyday is to burn on colorless flame (such as lighter and alcohol lamp). The sample will continue to burn, smoke and flame will appear yellow and with the smell of hot oil.
1. The homopolymer of homopolymer PP- polypropylene [size=-1]Homo-polymer polypropylene, called PPH polypropylene PP homopolymer for short, is a single polymer of propylene monomer. Polypropylene (PP), as a thermoplastic polymer, began to be commercialized in 1957. It is the first of the stereoscopic polymer. Its historical significance is more reflected in it, which has been the fastest growing major thermoplastic, and its total national output reached 3 million tons in 2004. It has a wide range of applications in the field of thermoplastic plastics, especially in fiber and filament, film extrusion, injection molding and so on.
Two, PP copolymer, Polypropylene Copolymer, or PPC, is the copolymer of propylene monomer and ethylene monomer. According to the distribution mode of ethylene monomer on the molecular chain, the copolymer PP can be divided into two kinds: random copolymer (PPR) and block copolymer (PPB). The rigidity of the PPR is good, but the impact resistance is not good, especially the low temperature impact resistance is worse, and the creep resistance is poor. The impact resistance of PPB is good, but the vermicular resistance is as bad as PPR. The impact resistance and creep resistance of PPR are all good. 在2月2日至3日在京召开的2018年全国环境保护工作会议上，环保部部长李干杰介绍，今年我国将制定实施打赢蓝天保卫战三年作战计划，启动钢铁行业超低排放改造，还要出台京津冀及周边地区、长三角、汾渭平原等重点区域大气污染防治实施方案。到2020年，全国未达标城市pm2.5平均浓度要比2015年降低18%，地级及以上城市优良天数比例达到80%。这也是“十三五”规划提出的约束性指标。