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Fast-curing slow-rebound acrylic foam as well as preparation method and application thereof

An acrylic foam and rapid curing technology, which is applied in the field of foam materials, can solve the problems of slow curing speed, high density and slow resilience of acrylic foam shock-absorbing foam, and achieve small compression residual deformation, long operation time, The effect of good cushioning effect

Pending Publication Date: 2022-02-08
CYBRID TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acrylic foamed shock-absorbing foam of this invention has a slow curing speed and a high density, and the slow resilience needs to be further improved.

Method used

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  • Fast-curing slow-rebound acrylic foam as well as preparation method and application thereof
  • Fast-curing slow-rebound acrylic foam as well as preparation method and application thereof
  • Fast-curing slow-rebound acrylic foam as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In this embodiment, a fast-curing and slow-rebound acrylic foam is provided, and the preparation raw materials of the fast-curing and slow-rebound acrylic foam include the following components in parts by weight:

[0054]

[0055]

[0056] Among them, the number-average molecular weight of the acrylic polymer (brand name: Yake Chemical YZ-H305) is 4000, the hydroxyl value is 54mgKOH / g, and the solid content is 40%; the isocyanate is toluene diisocyanate; the blowing agent is azobisisobutyl Nitrile; chain extender is 1,4-butanediol; delayed catalyst is (acetylacetonate) dibutyltin dilaurate.

[0057] The preparation method comprises the following steps:

[0058] (1) The acrylic acid polymer, delayed catalyst, chain extender, foaming agent and organic solvent were mixed and dispersed at high speed for 40 minutes, and then added with isocyanate, mixed and dispersed at high speed for 30 minutes to obtain a mixed solution;

[0059] (2) Coating the mixed solution on th...

Embodiment 2

[0063] In this embodiment, a fast-curing and slow-rebound acrylic foam is provided, and the preparation raw materials of the fast-curing and slow-rebound acrylic foam include the following components in parts by weight:

[0064]

[0065]

[0066] Among them, the number-average molecular weight of the acrylic polymer (brand name: Yake Chemical YZ-H706) is 5000, the hydroxyl value is 70mgKOH / g, and the solid content is 60%; the isocyanate is isophorone diisocyanate; the blowing agent is p-toluene Sulfonyl hydrazide; chain extender is 1,6-hexanediol; delayed catalyst is (acetylacetonate) triethylenediamine.

[0067] The preparation method comprises the following steps:

[0068] (1) Mix, disperse and stir the acrylic polymer, delayed catalyst, chain extender, foaming agent and organic solvent at high speed for 30 minutes, then add isocyanate, mix and disperse and stir at high speed for 60 minutes to obtain a mixed solution;

[0069] (2) Coating the mixed solution on the bas...

Embodiment 3

[0073] In this embodiment, a fast-curing and slow-rebound acrylic foam is provided, and the preparation raw materials of the fast-curing and slow-rebound acrylic foam include the following components in parts by weight:

[0074]

[0075]

[0076] Among them, the number average molecular weight of the acrylic polymer (trade name: Yake Chemical YZ-H638) is 8000, the hydroxyl value is 75mgKOH / g, and the solid content is 60%; the isocyanate is diphenylmethane diisocyanate; Nitropentamethylenetetramine; chain extender is glycerin; delayed catalyst is zinc octanoate (acetylacetonate).

[0077] The preparation method comprises the following steps:

[0078] (1) The acrylic acid polymer, delayed catalyst, chain extender, foaming agent and organic solvent were mixed and dispersed at high speed for 50 minutes, and then added with isocyanate, mixed and dispersed at high speed for 50 minutes to obtain a mixed solution;

[0079] (2) Coating the mixed solution on the base material, he...

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Abstract

The invention provides fast-curing slow-rebound acrylic foam and a preparation method and application thereof, and the fast-curing slow-rebound acrylic foam is prepared from the following raw materials in parts by weight: 100 parts of acrylic polymer; 1 to 10 parts of isocyanate; 0.3 to 15 parts of a foaming agent; 0.5 to 6 parts of a chain extender; and 0.03 to 1 part of a delayed catalyst. The acrylic foam disclosed by the invention has a rapid curing effect and an excellent slow rebound effect, effectively improves the buffering and sound insulation performance of the foam, and is suitable for being used as a buffering material to be applied to electronic equipment for sealing, buffering and the like.

Description

technical field [0001] The invention belongs to the technical field of foam materials, and relates to a fast-curing slow-rebound acrylic foam and a preparation method and application thereof. Background technique [0002] Slow rebound foam is also called low rebound sponge, zero pressure foam. Slow rebound foam is a kind of foam material with viscoelasticity. When the foam is deformed by external force, its strain lags behind the change of stress, so when the foam is subjected to external force, it does not recover immediately, but after 5-40 After a few seconds, it slowly returns to its original shape and has memory properties, also known as memory foam. Due to its resilience, unique cell structure and porosity, slow-rebound foam can conform to the shape of the load, maximize the contact area, minimize the stress gradient, and relieve the stress concentration point to achieve force. Dispersion, higher energy absorption, better cushioning performance and better processing ...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08J9/10C08J9/32
CPCC08J9/103C08J9/105C08J9/107C08J9/32C08J2203/04C08J2375/04
Inventor 张玉山邹学良朱玲玲陈洪野吴小平
Owner CYBRID TECHNOLOGIES INC
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