A kind of master batch for reducing foaming temperature and its application

Abstract

The invention discloses a master batch, which is composed of the following raw materials by weight percentage: 8-12% of glycerol, 12-18% of urea, 50-55% of zinc cyanurate, and 20-25% of zinc glycerol; a preparation method of the master batch , comprising the following steps: mixing glycerol, urea, zinc cyanurate and zinc glycerol at a high speed according to the above weight percentage, and then heating up, extruding and granulating to prepare master batches. The master batch of the present invention is added to the PVB foamed product, and on the premise of ensuring a high and stable foaming ratio, the foaming temperature is lowered, and the foaming temperature is reduced to 180-200°C.

Description

technical field [0001] The invention relates to the technical field of PVB foaming product production, in particular to a master batch for reducing foaming temperature and its application. Background technique [0002] PVB is also known as polyvinyl butyral ester. During the production process of PVB foamed products, it needs to enter the foaming furnace to raise the temperature for foaming. The current foaming temperature needs to be controlled at 220-230℃. If the temperature is lower than 220 ℃, the foaming is not easy to carry out, the foaming effect is poor, and the product quality is affected. [0003] In order to achieve full foaming and achieve a better foaming effect, the foaming temperature must be controlled to 220-230 °C, and the foaming temperature is high, on the one hand, it will cause energy waste and increase production costs; on the other hand, high temperature will make PVB Some raw materials in the product are volatilized, resulting in waste of raw materi...

AI Technical Summary

Problems solved by technology

[0002] PVB is also known as polyvinyl butyral ester. During the production process of PVB foaming products, it needs to enter the foaming furnace to raise the temperature for foaming. The current foaming temperature needs to be controlled at 220-230°C. If the temperature is lower than 220 °C, foaming is not easy, the foaming effect is poor, affecting product quality

[0003] In order to achieve sufficient foaming and achieve a better foaming effect, the foaming temperature must be controlled to 220-230°C. The high foaming temperature will cause energy waste and increase production costs on the one hand; on the other hand, high temperature will make PVB Some raw materials in the product volatilize, resulting in waste of raw materials and affecting the overall quality of PVB products

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