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Polyethylene. PE) plastic clarification

Source: Bearing network time: 2018-04-01
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Polyethylene English name: Polythylene or Polythene; referred to as PE. PE is a milky white translucent to opaque thermoplastic resin. The subdivision of density is: low-density poly-B. ǎ蹋 校 校 呙芏 呙芏 呙芏 垡 垡 ǎ龋 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校Ant. ǎ蹋蹋模校牛 3. 叻 恿 恿 垡 垡 垡. ǎ龋 龋 龋 龋 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 校 垡 垡 垡 垡 垡 垡.
At that time, the output value of international polyolefin polymer was 350 million tons, during which polyethylene was 65%, and more than 30% of the total plastic output value, which is one of the largest general-purpose plastic products.
The various functions of polyethylene have a close relationship with their density, molecular weight distribution and melt index. Generally speaking, its physical and mechanical functions are excellent, and it can be produced by a variety of processing methods and molding equipment, but the scope of use of different types of polyethylene is also different.
1. Low-density polyethylene low-density polyethylene chain has long and short chain branches; low crystallinity; molecular weight is usually between 50,000 and 500,000; a milky white translucent waxy solid resin; non-toxic; softening point Low; good resistance; impact resistance; low temperature resistance; can work at -60 degrees to -80 degrees; excellent electrical insulation. LDPE has low water absorption; it has almost no water absorption; it has excellent chemical stability; it is stable to acids, alkalis, salts and organic solvents. It has high permeability to carbon dioxide and organic odor; but it has poor permeability to water vapor and air. Incineration; burning with white bacon; simple aging degradation and discoloration under sunlight and heat effects.
Disease (18) 忻芏 垡 垡 中 中 中 density 乙 ǎ ǎ 校 校 校 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 916 The tensile strength is worse than HDPE.
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Field 8. 呙芏 垡 垡 高 high density poly ǎ龋. ǎ龋 校 校 校 ┏ ┏ 榘 榘 榘 榘 榘 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 鞯睦 校 校 校 校 校 校 校 幽 幽 幽 幽 幽 幽PE 峋Ф .. HDPE has high temperature resistance, oil resistance, vapor permeability and environmental stress crack resistance; electrical insulation, impact resistance and cold resistance are very good; HDPE is superior in strength and aging function PP; operating temperature is higher than PVC, LDPE; HDPE water absorption is very small. 薅 榷ㄐ 榷ㄐ 榷ㄐ 槐∧ざ 槐∧ざ 槐∧ざ 羝 羝 羝 . . . . 掌 掌 掌.
. Foundation (11) 咝 芏 芏 芏 垡 垡 垡 垡 line type low-density poly 乙. ǎ蹋蹋 校 校 校 ┦ ┦ ┦ ┦ 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且Tombs 畚铮 蔷垡 蔷垡 〉 谌罄嗖 oyster line type low density poly B. ǎ蹋蹋 校 校 ┚哂 ┚哂 ┚哂 校 校 校 校 诺 诺 诺 诺 锪 锪 锪 锪 锪 锪 哂 哂 芏鹊 芏鹊垡 冢蹋蹋. 冢蹋蹋 校 school fat school Huai 嬖诙 嗷 嗷 咝 咝 恿矗 恿矗 恿矗 恿矗 恿矗 蛊浣峋Ф鹊 蛊浣峋Ф鹊 蛊浣峋Ф鹊 蛊浣峋Ф鹊 蛊浣峋Ф鹊 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋 蹋蹋Porcelain suspicion unloading Я矗 Я矗 恿糠 恿糠 恿糠 恿糠 恿糠 恿糠 恿糠 臀 氯 氯 氯 氯 氯 氯 氯 氯 氯 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍 淝湍
GBT data is LDPE; because LDPE has low water absorption; almost no water absorption; excellent chemical stability; such as acid, alkali, salt, organic solvents are relatively stable. Although the heat resistance of LDPE is not very good; When water vapor and hot water are <100 degrees. Use LDPE as the inner and outer ring of the bearing; stainless steel ball is the most economical and reasonable choice for rolling.
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