First of all by the Dongguan Plastic mold factory editor for everyone to introduce the plastic mold product molding process of polymer degradation concept. Due to the role of polymer macromolecules by heat and stress, or due to the high temperature by the trace moisture, acid, alkali and other impurities and the role of oxygen in the air, the polymer will occur relative molecular weight reduction or changes in macromolecule structure and other chemical changes, this The phenomenon is called degradation or cracking.
Plastic mold product during the molding process of polymer degradation how to control:
1. Strict control of raw materials, technical indicators and the use of qualified raw materials
2. Strict drying of the polymer before use
3. To determine a reasonable processing technology and processing conditions
4. Use additives
Polymer degradation is usually detrimental, but there are exceptions, such as by mechanical degradation (roll-to-roll coextrusion) between the polymer or between the two polymers of the graft or block polymer configuration of the copolymer, To improve the performance of polymers and expand its scope of application is an example.
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