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Novel polyurethane foaming material

A foaming material and polyurethane technology, applied in the field of polyurethane materials, can solve the problems of poor elasticity, high compression permanent deformation, difficult to control cell size, etc., and achieve the effects of good elasticity, uniform foaming and excellent comprehensive performance.

Pending Publication Date: 2021-11-30
苏州思德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polymer polyols, catalysts, refining grades, coupling agents and foaming agents are evenly mixed and poured into molds for reaction and foaming. During the preparation process, foaming and chaining are simultaneously carried out in the reaction system Growth or crosslinking reaction, the controllability of the foaming process is poor, and the problems of uneven cell distribution and difficult control of cell size are prone to occur, resulting in defective areas of castable polyurethane foam materials, poor elasticity, and high compression set. poor shrinkage

Method used

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  • Novel polyurethane foaming material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An embodiment of a novel polyurethane foam material of the present invention comprises the following components in parts by weight: 80 parts of polyether polyol, 30 parts of isocyanate, 1 part of crosslinking agent, 1 part of foaming agent, surface 5 parts of active agent, 10 parts of catalyst, 8 parts of functional auxiliary agent, 40 parts of water.

[0024] It also includes 20 parts of flame retardant. The function of flame retardant is to absorb heat and decompose into non-flammable substances at or near the ignition temperature; it can react with foam combustion products to form non-flammable substances; it can decompose to stop foam free radicals Substances that react with oxidation.

[0025] The isocyanate is selected from one or more combinations of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

[0026] The preparation method of polyether polyol is as follows: using the action of basic catalyst ...

Embodiment 2

[0034] An embodiment of a novel polyurethane foam material of the present invention comprises the following components in parts by weight: 120 parts of polyether polyol, 60 parts of isocyanate, 3 parts of crosslinking agent, 3 parts of foaming agent, surface 10 parts of active agent, 20 parts of catalyst, 12 parts of functional auxiliary agent, 60 parts of water.

[0035] It also includes 30 parts of flame retardants. The function of flame retardants is that they can absorb heat and decompose into non-flammable substances at or near the ignition temperature; they can react with foam combustion products to form non-flammable substances; they can decompose to stop foam free radicals Substances that react with oxidation.

[0036] The isocyanate is selected from one or more combinations of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

[0037] The preparation method of polyether polyol is as follows: using the act...

Embodiment 3

[0045] An embodiment of a novel polyurethane foam material of the present invention comprises the following components in parts by weight: 100 parts of polyether polyol, 45 parts of isocyanate, 2 parts of crosslinking agent, 2 parts of foaming agent, surface 7 parts of active agent, 15 parts of catalyst, 10 parts of functional auxiliary agent, 50 parts of water.

[0046]It also includes 25 parts of flame retardants. The function of flame retardants is that they can absorb heat and decompose into non-flammable substances at or near the fire temperature; they can react with foam combustion products to form non-flammable substances; they can decompose to stop foam free radicals Substances that react with oxidation.

[0047] The isocyanate is selected from one or more combinations of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

[0048] The preparation method of polyether polyol is as follows: using the action of...

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Abstract

The invention discloses a novel polyurethane foaming material. The novel polyurethane foaming material comprises the following components in parts by weight: 80-120 parts of polyether polyol, 30-60 parts of isocyanate, 1-3 parts of a cross-linking agent, 1-3 parts of a foaming agent, 5-10 parts of a surfactant, 10-20 parts of a catalyst, 8-12 parts of a functional aid and 40-60 parts of water. The foaming material prepared by the invention has the advantages of uniform foam pore distribution, good elasticity, good flexibility and the like.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a novel polyurethane foam material. Background technique [0002] Polyurethane rigid foam is a high molecular polymerization made of isocyanate and polyether as the main raw materials, mixed by special equipment, and foamed on-site by high-pressure spraying under the action of various additives such as foaming agent, catalyst, and flame retardant. thing. There are two types of polyurethane foam, soft foam and hard foam. Soft foam has an open-cell structure, and hard foam has a closed-cell structure; soft foam is divided into two types: crusted and non-skinned. The main function of polyurethane soft foam is cushioning. Polyurethane soft foam is often used in sofa furniture, pillows, cushions, toys, etc. , garments and acoustic linings. [0003] Polymer polyols, catalysts, refining grades, coupling agents and foaming agents are evenly mixed and poured into molds for reactio...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08K5/14C08J9/14C08J9/10C08L75/08
CPCC08G18/4837C08K5/14C08J9/141C08J9/103C08J2375/08C08J2203/14C08J2203/04
Inventor 林斌
Owner 苏州思德新材料科技有限公司