Traditional Culture Encyclopedia - Traditional virtues - When emulsion polymerization is suitable
When emulsion polymerization is suitable
Different from suspension polymerization, emulsion system is relatively stable, and there are batch, semi-batch and continuous production in industry. When transported or stored by pipeline, it will not be stirred or layered. In production, the polymerization speed, molecular weight and particle size of colloidal particles can also be controlled by "seed polymerization" (that is, latex containing active chains) and adding monomers or regulators. High concentration latex can also be directly produced.
Emulsion polymerization has the following characteristics:
① Using water as the medium is cheap and safe.
② The liquid station is small, which is beneficial to tax mixing, heat transfer and pipeline transportation.
③ The polymerization speed is fast and the relative molecular weight of the product is large.
④ It is very convenient to use emulsion directly, such as emulsion coating, adhesive and fabric treatment agent.
⑤ The residual emulsifier in the product is harmful to some properties, such as electrical properties and water resistance.
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