Defoaming agent for polystyrene

Abstract

The invention relates to a defoaming agent for polystyrene. The defoaming agent is prepared from, by weight, 2-4 parts of dimethyl silicone oil, 1.2-1.5 parts of sodium dodecyl benzene sulfonate, 2-3 parts of diphenyl carbazone, 2.5-4 parts of sodium tripolyphosphate, 3-5 parts of triethanolamine, 4-6 parts of dispersing agent NNO and 2-3 parts of chlorinated paraffin. After the defoaming agent for polystyrene is matched, the defoaming agent is reasonably matched aiming at the characteristics of polystyrene materials, the bubble generation rate of polystyrene products in the processing process is reduced, the quality of the products is improved, the yield of the products is increased, the defects of the products are reduced, and meanwhile the physical performance of polystyrene cannot be reduced.

Description

technical field [0001] The invention belongs to the field of plastic additives, in particular to a defoamer for polystyrene. Background technique [0002] Polystyrene resin is non-toxic, odorless, colorless transparent particles, glass-like brittle materials, its products have extremely high transparency, the light transmittance can reach more than 90%, good electrical insulation performance, easy to color, processing flow Good resistance, good rigidity and good chemical corrosion resistance. The disadvantages of ordinary polystyrene are brittleness, low impact strength, prone to stress cracking, poor heat resistance and intolerance to boiling water. During the processing of polystyrene, it is necessary to add a defoamer to reduce the bubble rate in the process and increase the product yield. However, the existing single-formulation defoamer has a poor effect and affects the yield. Contents of the invention [0003] The object of the present invention is to provide a def...

AI Technical Summary

Problems solved by technology

The disadvantages of ordinary polystyrene are brittleness, low impact strength, prone to stress cracking, poor heat resistance and intolerance to boiling water, etc.

During the processing of polystyrene, it is necessary to add a defoamer to reduce the bubble rate in the process and improve the product rate, but the existing single-formulation defoamer is less effective and affects the yield