| 护坡塑料模具的鉴别 |
| 添加时间：2017/5/22 17:31:15 浏览次数： |
| 通过观察的外观，可初步护坡塑料模具鉴别出护坡塑料模具制品所属大类：热塑性护坡塑料模具，热固性护坡塑料模具或弹性体护坡塑料模具。一般热塑性护坡塑料模具有结晶和无定形两类。结晶性塑料外观呈半透明，乳浊状或不透明，只有在薄膜状态呈透明状，硬度从柔软到角质。无定形一般为无色，在不加添加剂时为全透明，硬度从硬于角质橡胶状。热固性护坡塑料模具通常含有填且不透料明，如不含填料时为透明。弹性体具橡胶状手感，有一定的拉伸率。 By observing the appearance, but initial slope protection plastic mold identify slope protection of plastic mold products belong to categories: thermoplastic slope protection plastic mold, plastic mold plastic mold or elastomer revetment slope protection thermosetting. The plastic mould of thermoplastic protection is crystallized and amorphous. Crystalloid plastic is translucent, opaque or opaque, and is only transparent in the membrane state and is soft to exfoliate. The amorphous is colorless and is fully transparent in addition to the additive, and the hardness is hard from the cutin rubber. Thermosetting plastic moulds are usually filled with fillings and are not transparent. The elastic body has a rubber feel and has a certain stretch rate. 加热鉴别 Heating to identify 上述三类护坡塑料模具的加热特征也是各不相同的，通过加热的方法可以鉴别。热塑性护坡塑料模具加热时软化，易熔融，且熔融时变得透明，常能从熔体拉出丝来，通常易于热合。热固性护坡塑料模具加热至材料化学分解前，保持其原有硬度不软化，尺寸较稳定，至分解温度炭化。弹性体加热时，直到化学分解温度前，不发生流动，至分解温度材料分解炭化。 The heating characteristics of these three kinds of plastic moulds are different, which can be identified by means of heating. Thermoplastic plastic moulds are softened, melted and melted when heated, and they can be drawn from the melt and are usually very hot. The thermosetting plastic mould is heated to the material chemical decomposition, the hardness is not soft, the dimension is stable, to the decomposition temperature carbonization. When the elastomer is heated, no flow occurs until the chemical decomposition temperature is decomposed into the carbonization of the decomposition temperature. |
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