Preparation method of coating AC foaming agent pre-prepared slurry

Abstract

The invention discloses a preparation method of coating AC foaming agent pre-prepared slurry. The pre-prepared slurry comprises the following raw materials in parts by weight: 100-300 parts of AC foaming agent powder, 10-50 parts of heavy calcium carbonate, 10-60 parts of a plasticizer, 5-40 parts of soybean oil, 5-30 parts of a barium-zinc stabilizer, 10-40 parts of a potassium-zinc stabilizer, and 1-15 parts of a foam finishing agent. According to the pre-prepared slurry provided by the invention, the high-magnification AC foaming agent (6-8 times) is selected; in order to make foaming finerand more uniform, the foam finishing agent is added into the AC foaming agent pre-prepared slurry; in order to reduce the foaming temperature in the production process, the potassium-zinc stabilizeris added and plays a role of an activating agent, so that the foaming temperature can be reduced by about 5 DEG C, and foaming is more stable and better controlled; through preparation of the AC foaming agent pre-prepared slurry, a highest foaming ratio can be achieved, and the foaming effect is finer and more uniform; and according to preparation of the AC foaming agent pre-prepared slurry, the temperature in the foaming process of an E-PVC coating can be reduced, and the production control is facilitated.

Description

technical field [0001] The invention relates to the field of production technology of coated E-PVC foaming materials, in particular to a preparation method of coating AC foaming agent premixed slurry. Background technique [0002] AC foaming agent is the foaming agent with the largest gas generation, the most superior performance and a wide range of uses. AC foaming agent is also suitable for the production of E-PVC coating foaming materials, but since AC foaming agents are all in powder form, they are directly added to E-PVC paste resin for mixing and preparation, there are two problems: first, AC foaming agent The foaming agent is in powder form, which is not conducive to complete dispersion, and the foaming will be uneven during the production process, and it is easy to generate large bubbles. Secondly, the foaming temperature of the AC foaming agent is relatively high, especially for E-PVC paste resin, it must be around 210°C to completely foam, so that the foaming stab...

AI Technical Summary

Problems solved by technology

AC foaming agent is also suitable for the production of E-PVC coating foaming materials, but since AC foaming agents are all in powder form, they are directly added to E-PVC paste resin for mixing and preparation, there are two problems: first, AC foaming agent The foaming agent is in powder form, which is not conducive to complete dispersion, and the foaming will be uneven during the production process, and it is easy to produce large bubbles

The protective layer has a certain thickness, which plays a better role in anti-corrosion and heat preservation of the base material; also for example: the application number is 201711424781.7, which is named as an energy-saving and environmentally friendly flame-retardant and anti-seismic coating material, which discloses the energy-saving and environmentally-friendly flame-retardant and anti-seismic coating Layer materials include an inner base layer and an outer protective layer. The raw materials of the inner base layer include clay, quartz sand, dolomite, resin, thickener, foaming agent and water. The clay, quartz sand, dolomite, resin, Thickener, foaming agent, and water are: 70-75 parts of clay, 10-15 parts of quartz sand, 8-10 parts of dolomite, 5-7 parts of resin, 2-3 parts of thickener, foam 2-3 parts of agent, and the rest is water. The outer protective layer is attached to the right side wall of the inner base layer. The outer protective layer is an asbestos mesh layer. This energy-saving and environmentally friendly flame-retardant and shock-resistant coating material mainly adopts The materials are all natural materials, with good energy saving and environmental protection, and a high degree of greening. By adding auxiliary materials with good toughness to the material, the coating material has good toughness, high plasticity, and good shock resistance. The above-mentioned existing The technology does not solve the AC foaming agent that needs to be solved in the present invention. The foaming temperature requirement is relatively high, especially for E-PVC paste resin, it must be about 210 ° C to completely foam, so that the stability of foaming cannot be conveniently controlled.