Supercritical foaming nucleating agent and preparation method thereof

A foaming nucleating agent and supercritical technology, applied in the field of foam plastics, can solve the problems of no new nucleating agent, poor versatility of related nucleating agents, single nucleating agent variety, etc., to achieve stable quality and prevent size Stability issues, improved reinforcement effects

Active Publication Date: 2019-12-13
浙江杰上杰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanism or foaming mechanism of nucleating agents is basically based on the formation, nucleation, precipitation, and growth of hot spots. Relevant researchers pay more attention to polymer synthesis and modification research, but less research on the mechanism of related nucleating agents , leading to a single variety of nucleating agents in the industry, not many new nucleating agents appeared, and related nucleating agents have poor versatility or general nucleating effects, and finally had to spend a lot of effort on synthesis and modification

Method used

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  • Supercritical foaming nucleating agent and preparation method thereof
  • Supercritical foaming nucleating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0041] A kind of supercritical foaming nucleating agent, its formula is shown in Table 1.

[0042] The supercritical foaming nucleating agent is prepared by the following method: the organic acid and its derivatives, the inorganic acid and its derivatives and the carbonate in the raw material are ground into a median particle size of 1-20 microns by jet milling Then add polymer and lubricant to pre-disperse the material in the state of ultrafine powder, and get granular supercritical foaming nucleating agent through banburying and granulation.

[0043] Table 1 (unit: kg)

[0044]

[0045]

[0046] The granular supercritical foaming nucleating agent obtained in each of the above examples is used to produce polypropylene foamed products, and the operation steps of polypropylene supercritical extrusion foaming are as follows:

[0047](1) Set the process conditions of the extruder as follows: Zone 1 170-175°C, Zone 2 180-185°C, Zone 3 190-198°C, Zone 4 198-210°C, die head t...

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Abstract

The invention relates to a nucleating agent, in particular to a supercritical foaming nucleating agent and a preparation method thereof, belonging to the technical field of foamed plastic. The supercritical foaming nucleating agent is prepared by mixing the following components in parts by weight: 5-50 parts of organic acid and derivatives thereof, 0-50 parts of inorganic acid and derivatives thereof, 5-50 parts of carbonate, 20-100 parts of a polymer and 1-10 parts of a dispersing agent. The nucleating agent has good nucleating effect; and a prepared foamed product has the advantages of fineand uniform foam holes and no water streaks, recesses or pinholes on the surface, and each batch of products are uniform and stable in color.

Description

technical field [0001] The invention relates to a nucleating agent, in particular to a supercritical foaming nucleating agent and a preparation method thereof, belonging to the technical field of foam plastics. Background technique [0002] Foam plastic refers to a special type of plastic product that uses polymer resin as the matrix and contains a large number of tiny cells inside. Because the cells are filled with gas, it can also be called a composite plastic filled with gas. Currently, both thermoplastics and thermosets can be made into foam. The preparation of foamed plastics through the foaming process can reduce the density of the material, increase the specific strength of the material, and reduce the amount of plastic products used. In addition, foam plastic has the advantages of light weight, thermal insulation, and sound insulation, and is widely used in various aspects such as packaging, transportation, and construction. [0003] Different from traditional che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08J9/14C08L23/06
CPCC08J9/08C08J9/142C08J2203/184C08J2203/02C08J2203/12C08J2323/06C08J2423/06C08J2203/08
Inventor 罗李华
Owner 浙江杰上杰新材料股份有限公司
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