Use of lubricants in general precautions

Lubricants varieties are more commonly used external lubricants are paraffin wax, stearic acid and its salts; lubricants with relatively low molecular weight PE, PTFE, PP, etc. These low molecular weight  aluminium stearate polymer is not only excellent lubricants, but also a good external lubricant. Sometimes, a lubricant effect is often not satisfactory, requires several lubricants used in conjunction with a compound resulting lubricant can play a role in many aspects. Better. The amount of lubricant is generally 0.5% to 1%.
In the selection of lubricant, should follow the following principles:
1, if the mobility of the polymer molding process has been to meet the needs of the major considerations lubricant meets the technical requirements, whether to facilitate stripping, in order to ensure internal and external balance.
2, external lubrication is satisfactory, you should see it in the molding, the plastic surface of the liquid film  methyl tin stabilizer can form a complete, therefore, outside the melting point of the lubricant with the molding temperature should be close to, but note there are differences between 10-30 ℃ , so as to form a complete film.
3, the compatibility with the polymer medium size, internal and external lubrication balance, non-blooming, easy to scale.
4, the lubricant is excellent in heat resistance and chemical stability, does not decompose during processing, non-volatile, non-corrosive, non-polluting products, there is no toxicity.