Shanghai Daoqin Plastics Co., Ltd.

plastics material its active property and high strength in industrial field/area application. in this material in, polyethylene (PE) （PE） is its in most Common types. PE plastics is types ethylene mono formed thermoplastic property polymer. this type of plastics color features suitable for multiple different application. will 帮助您 comprehensive understanding PE plastics property 质, type type and application.

Polyethylene is plastics industrial in most Common material 之一.

1.PE plastics is what?

polyethylene (PE), 也叫做 polyethylene (PE) （ shrink is PE）, is types ethylene polymerization reaction combined formed combined formed plastics. this type of tool has high degree active property material belongs to polyolefin plastics type, in plastics industrial in non important color.

ethylene （C2H4） is types through catalytic process formed gas 体, 而乙烷 is gas in important formed separation 之一. ethylene separation 子由两 甲烷 mono 位（CH2） through carbon - carbon di 键连接而 formed, its chemical is CH2=CH2.

PE plastics is types combined formed plastics, 源自于 ethylene copolymer reaction.

当接触 copolymer catalytic agent 时, di can by fracture, from make carbon - carbon di can and ethylene separation in carbon 原子形 formed mono 键. this combined process will formed polymer separation heavy mono 元. this simple structure by more made, is formed polyethylene (PE) features elements 之一.

PE plastics is full 球广泛 use material 之一. it can used for made as transparent food packaging film, material bag, agent bottle and automotive material 箱. in addition, it can through tensile formed fiber process light 松转化. in addition, polyethylene (PE) can modified tool has similar elastic property features.

2. polyethylene (PE) （PE） important features

2.1 polyethylene (PE) density

polyethylene (PE) plastics tool has different density multiple type type, 包括:

low density polyethylene (PE) （LDPE）: density scope/range in 0.910 to 0.940克/立方 cm between.
线 property low density polyethylene (PE) （LLDPE）: density scope/range in 0.910 to 0.920克/立方 cm between.
in density polyethylene (PE) （MDPE）: density scope/range in 0.926 to 0.940克/立方 cm between.
high density polyethylene (PE) （HDPE）: density scope/range in 0.941 to 0.967克/立方 cm between.
ultra-high molecular weight polyethylene (PE) （UHMWPE）: density scope/range in 0.931 to 0.949克/立方 cm between.

(源: polyolefin fiber)

polyethylene (PE) plastics has many different density type type.

2.2 polyethylene (PE) molecular weight

due to separation grade polymer structure more property, polyethylene (PE) molecular weight PE plastics type type 而异, 例如HDPE molecular weight in 300,000至9.2 x 10^6克/摩尔 between, 而UHMWPE molecular weight in 3.5至7.5百万原子 mono between.

polyethylene (PE) material molecular weight in its material and force features 方面起 important function. molecular weight relatively high PE usually tool has more high strong/high degree, wear resistance and impact resistant can force, excellent other type type PE.

2.3 polyethylene (PE) chemical property

polyethylene (PE) performance color resistant chemical property can, for acid, alkali and solvent agent and other chemical material tool has good resistant can force. this type of material non property, saturated and polymer/macromolecule amount carbon hydrogen combined material formed, therefore its chemical property and similar.

due to PE separation for structure, it has crystallization toward, separation make polyethylene (PE) crystallization. this reaction more high density, improvement plastics machine and chemical stability property. crystallization polyethylene (PE) sample usually in room temperature lower solvent understanding.

however, polyethylene (PE) easy to certain chemical material effect/influence, can can 导致应 force cracking, 膨胀, oxidation or material 渗透. this chemical versus function has can can reduce polyethylene (PE) overall material features.

polyethylene (PE) （不包括 crosslinked polyethylene (PE) ） usually can in relatively high temperature degree lower through use type solvent agent 如甲苯, 二甲苯 or chlorine solvent agent chlorine or chlorine 苯进行 solvent understanding.

2.4 polyethylene (PE) 玻璃化转变 temperature degree

and other thermoplastic property plastics versus ratio, PE plastics tool has versus for relatively low 玻璃化转变 temperature degree. it in low temperature lower still maintain active property and strong/high degree. need attention/notes is, this melt temperature degree can according to polyethylene (PE) type type has significantly 变化.

for/regarding Common application in density and high density polyethylene (PE), its melt temperature degree large is 130.8°C. low density polyethylene (PE) 平均熔 melt temperature degree in 105°C至115°C（221°F至239°F） between.

however, about/regarding polyethylene (PE) melt temperature degree most high 理论限 made by research is 约144°C至146°C（291°F至295°F）. polyethylene (PE) usually in high 于349°C（660°F） temperature degree lower.

2.5 polyethylene (PE) food safety property

许 multiple PE材 material already obtain FDA used for and food contact safety property. this plastics usually used for food packaging, material container and product packaging.

HDPE is in most Common types plastics. it used for manufacturing carbon acid material bottle, container, material box/case inner and food 储存箱.
LDPE and HDPE similar, more tool elastic property, combined used for manufacturing pressure bottle, plastics film and other. it tool has resistant chemical property, resistant micro material long features, and in different temperature degree lower used for food 保存时不会释放 has material 质. however, LDPE recycling plastics food safety property to 证实.

许 multiple polyethylene (PE) plastics already obtain FDA food safety 批准.

2.6 polyethylene (PE) outer resistant property

polyethylene (PE) is can UV resistant? 当暴露于 cationic light lower 时, polyethylene (PE) can can 会变 脆 low more easy fracture. usually use powder as is outer stabilizer solution this issues.

however, important is need attention/notes, outer resistant property degree can can different factors 而异, polyethylene (PE) type type, conditions, additives and other ring factors.

polyethylene (PE) in cationic light lower can can 会变 脆 low easy fracture.

2.7 polyethylene (PE) heat resistant property

PE plastics can resistant high temperature deformation or separation understanding. it can in high temperature lower maintain its mechanical properties, therefore non combined need heat resistant property application.

3. has how much types polyethylene (PE) plastics?

polyethylene (PE) plastics can according to polyethylene (PE) molecular weight and density separation is multiple different type type. most Common polyethylene (PE) type type 包括:

3.1 low density polyethylene (PE) （LDPE）

LDPE is types tool has low density and high elastic property PE plastics. LDPE usually has separation structure, separation molecular weight small 于50,000克/摩尔.

LDPE tool has 约110°C（230°F） melting point, by used for various industrial field/area. company usually main/primary in production packaging film, waste bag, material bag, 农业覆 cover/cap film, electrical cable insulation 层, pressure bottle, toys and use product and other use this type of type type plastics. LDPE recycling is #4.

由 low density polyethylene (PE) made formed plastics bottle.

3.2 low density property polyethylene (PE) （LLDPE）

LLDPE in structure upper and LDPE versus 似. it is through and 1-丁烯以 and relatively less 1-己烯 and 1-辛烯 polymerization reaction made 备.

LLDPE tool has and LDPE similar features, tool has more color features, in copolymer process in need more less can amount and through adjustment its chemical formed separation can polymer features can force. LLDPE recycling is #4.

3.3 in density polyethylene (PE) （MDPE）

MDPE is types 介于HDPE and LDPE between PE plastics, its density in 0.926 to 0.940克/立方 cm between. this type of active property material can through different catalytic agent 如铬/ silicon, Ziegler-Natta or metal formed.

in density polyethylene (PE) tool has color impact resistant and resistant property can. MDPE Common application gas tube/pipe, parts, bag material, film, packaging film, bag and 螺纹插销.

尽 tube/pipe MDPE 划痕敏感 property relatively HDPE low, its resistant force cracking property can excellent 于HDPE. and LDPE versus ratio, MDPE more soft/flexible, still maintain relatively high hardness.

3.5 high density polyethylene (PE) （HDPE）

HDPE is types tool has high density and high crystallization degree PE plastics. material molecular weight high 达200,000克/摩尔.

HDPE is in low temperature and low pressure conditions lower production, separation structure has separation 支. this type of separation structure features polymerization 链紧密连接 in 一起, formed types 致密且 tool has high crystallization degree material, tool has strong/high degree and degree hardness.

HDPE tool has relatively high melting point. it can normal temperature lower high 达120°C（250°F） frequency hot 处理, therefore non combined 杀菌.

HDPE can in many different product in to, 包括储奶 bottle and use agent bottle. in addition, it also used for manufacturing material bag, construction film and 农业覆 cover/cap film. HDPE also used for manufacturing container, cover/cap 子, equipment outer housing/shell and injection molding toys. HDPE recycling is #2.

high density polyethylene (PE) tube/pipe.

3.6 ultra-high molecular weight polyethylene (PE) （UHMWPE）

UHMWPE tool has high molecular weight, 介于3,000,000 to 6,000,000 原子 mono between. has is, this type of polymer/macromolecule amount usually method 直接测 amount, is through material inner in viscosity 确定.

this type of polymer can tensile formed fiber, to to crystallization 状态. therefore, to material tool has especially high hardness and tensile strength, ultra- 钢. this fiber by weaving to polyethylene (PE) material in, used for made as anti elastic 衣.

3.7 crosslinked polyethylene (PE) （PEX）

crosslinked is in polymer in formed 一 三维网络 process, has reinforcement material stability property and resistant use property. in crosslinked lower, polyethylene (PE) heat resistant property, resistant pressure property, impact resistant property and chemical resistance significantly improve/increase, versus for/regarding non crosslinked 状态.

crosslinked polyethylene (PE), or 称PEX, is crosslinked 处理 一 types PE plastics. this process reinforcement PEX features, make its tool has color resistant cracks, corrosion resistant and 卓越 伸 shrink property. it also improvement material flexibility property, make PE plastics more easy molding and 安装.

PEX widely used in industrial field/area, construction pipeline system, water and cooling system, use water pipeline, high pressure cable insulation and other. PEX tube/pipe tool has large flexibility property, can in need outer parts lower bending 以适应障碍 material.

由 crosslinked polyethylene (PE) made formed foam sheet/plate.

4. Common polyethylene (PE) application areas

polyethylene (PE) in different industrial field/area to application. Common polyethylene (PE) application areas 包括:

4.1 packaging

due to its color anti property can, light and resistant use property, polyethylene (PE) in packaging industry application. it usually used for manufacturing plastics bag, shrinkage film, food container and bottle 子. polyethylene (PE) active property make its can molding formed various and dimensions, meet/satisfy different product packaging demand.

polyethylene (PE) used for manufacturing plastics bag, shrinkage film, food container and bottle 子.

4.2 construction

in construction industry, polyethylene (PE) in manufacturing insulation material, anti water material and anti 腐保护方面 non important. it by used for manufacturing pipeline, parts, film and 屋顶材 material. polyethylene (PE) resistant property and chemical resistant property make its formed is long construction project 首选. especially is HDPE plastics pipeline its high strength, corrosion resistant property and long lifespan 而备受青睐.

polyethylene (PE) plastics pipeline its high strength and long lifespan 而备受青睐.

4.3 automotive industrial

polyethylene (PE) plastics in automotive industrial in used for manufacturing 燃油箱, inner parts, electrical connectors and electrical 线. its light amount features has improve/increase efficiency, its impact resistant can force ensure in 发生事故时 maintain safety. in addition, polyethylene (PE) for chemical material and ring factors resistant can force make its suitable for various automotive application.

PE pipeline its high resistant use property and long lifespan 而广受欢迎

4.4 农业

in field/area, polyethylene (PE) by used for manufacturing temperature film, system, cover/cap film and bag. this application has improve/increase as material output/production volume, control and water 资源. polyethylene (PE) corrosion resistant property, flexibility property and UV resistant can force make its can 够承受恶 poor conditions.

temperature film is polyethylene (PE) made formed, widely used in field/area.

4.5 medical 保健

polyethylene (PE) in medical industry in important function, especially is in medical devices, device and product packaging production in. its material versus property, stability property and chemical resistance make its suitable for injection device, tube/pipe and bottle and other applications.

polyethylene (PE) can used for manufacturing medical devices or equipment.

4.6 electrical - electronics

electronics - electrical industrial use polyethylene (PE) as is insulation material. it usually used for cable, electrical 线, electrical connectors and insulation belt/tape. polyethylene (PE) high electrical insulation strong/high degree and low conductive property ensure has safety electrical 传输.

cable cover/cap PE plastics made formed