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护坡塑料模具鉴定方法
Identification Method of Plastic Mould for Slope Protection
外观鉴别
Appearance identification
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, we can identify the main types of plastic moulds for slope protection: thermoplastic moulds for slope protection, thermosetting moulds for slope protection or elastomeric moulds for slope protection. Generally, there are two types of thermoplastic moulds for slope protection: crystalline and amorphous. Crystalline plastics are translucent, opaque or opaque in appearance, only transparent in the film state, with hardness ranging from soft to horny. Amorphous is generally colorless, transparent without additives, harder than keratinous rubber. Thermosetting plastic moulds for slope protection usually contain fillings and are opaque, such as transparent without fillers. The elastomer has a rubber handle and a certain tensile strength.
加热鉴别
Heating identification
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 the above three types of slope protection plastic moulds are also different, which can be identified by heating method. Thermoplastic moulds for slope protection soften and melt easily when heated, and become transparent when melted. Wires are often drawn from the melt, which is usually easy to heat. Thermosetting slope protection plastic mold is heated until the material is chemically decomposed. Its original hardness is not softened, and its size is stable until the decomposition temperature is carbonized. When the elastomer is heated, no flow occurs until the decomposition temperature, and the material is decomposed and carbonized at the decomposition temperature.