POM 美国杜邦 100P 100ST 500P 500T工程塑胶 塑胶原料
- 供应商
- 京冀(广州)新材料有限公司
- 认证
- 报价
- ¥26.00元每千克
- POM 美国杜邦
- 工程塑胶
- 100P
- 500P
- 500T
- 塑胶原料
- 联系电话
- 18938547875
- 手机号
- 18938547875
- 联系人
- 蒋红卫
- 所在地
- 广州市南沙区丰泽东路106号(自编1号楼)X1301-E014087(注册地址)
- 更新时间
- 2024-05-29 08:01
密度构型
构型是影响高密性质的一个重要的因素,不同的构型可以让材料的性质大相径庭,比如保鲜膜可以被火熔化而橡皮则不能。
材料按构型分线型高密度、支链型高密度和体型密度3种。线型材料可熔化和溶解,保鲜膜的成分聚丙烯就是一种线型材料。体型材料加热时不会熔融,只能变软和弹性增大,在溶剂中也只能溶胀。衡量高
molecular configuration
the molecular configuration is an important factor that affectsthe properties of polymer materials. different molecularconfigurations can make the properties of polymer materials verydifferent. for example, the preservative film can be melted by firewhile the rubber cannot.
according to the configuration, polymer materials are dividedinto three types: linear polymer, branched polymer and bodypolymer. the linear polymer material can be melted and dissolved.polypropylene, the component of the fresh-keeping film, is a linearpolymer material. the bulk polymer materials will not melt whenheated, but only become soft and elastic, and can only swell insolvent. two properties are often mentioned in measuring polymermaterials: thermoplasticity and thermosetting. thermoplasticmaterials (linear and branched chain) are generally heated andmelted into liquid, and can be recovered after cooling, so they canbe heated for many times; thermosetting materials (shape) cannot bechanged once they are formed.
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