A kind of preparation method of AC blowing agent

A technology of foaming agent and seed crystal, which is applied in the field of preparation of AC foaming agent, can solve the problems of unable to meet the market demand, wide particle size distribution range, rough particle surface, etc., and achieve the inhibition of crystal growth and particle size distribution range Narrow, high dissolution rate effect
CN111377833BActive Publication Date: 2022-05-20JIANGXI SELON INDAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGXI SELON INDAL
Publication Date
2022-05-20

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Abstract

The invention relates to a method for preparing an AC foaming agent. In the method, a jet reaction device is used to vigorously mix part of the biurea slurry and chlorine gas, react instantaneously to generate crystal nuclei of the AC foaming agent, and then add the crystal nuclei to the remaining biurea In the urea slurry, an oxidizing agent is added to oxidize to generate AC foaming agent. The advantage of this process is that it can control the particle size and particle size distribution range of the AC blowing agent, which is conducive to improving the stability of the use of the AC blowing agent, and improving the added value of the product and market competitiveness.
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Description

technical field

[0001] The invention relates to the technical field of AC foaming agent, in particular the invention relates to a preparation method of AC foaming agent. Background technique

[0002] AC (scientific name azodicarbonamide) foaming agent can decompose in a very narrow temperature range and produce a large amount of gas in a very short time, and the generated gas and residue are non-toxic, odorless, non-polluting, non-coloring, and non-toxic. Corrosion processing equipment, does not affect the mechanical properties and stability of the product, has good dispersion in plastics and rubber, and forms fine and uniform cells. It is the most widely used organic foaming agent in the world.

[0003] An important indicator to measure the quality of AC foaming agent products is the particle size and distribution state of the product. The particle size distribution of existing products is wide and irregular. If the particle size distribution of AC foaming agent is too wide...

Claims

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