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Efficient thermal-insulation ultralow-density polyurethane foam and preparation method thereof

A polyurethane foam and ultra-low density technology, applied in the field of ultra-low density polyurethane foam, can solve the problems of high foaming material waste rate, low production safety, and non-environmental foaming agent, so as to reduce molding density and flow Good performance, reduce the effect of heat radiation

Pending Publication Date: 2022-01-21
厦门柏伦亚聚氨酯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of this type of polyurethane foam mainly include pouring, spraying, or the use of special foaming agents, etc., but these methods have large overfilling, low production efficiency, high waste rate of foaming materials, and high requirements for equipment. , the foaming agent is not environmentally friendly, and the production safety is low. There is an urgent need for a spray-type environmentally friendly foaming composite material, which can solve the problems of low production efficiency, waste and non-environmental protection in the above invention.

Method used

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  • Efficient thermal-insulation ultralow-density polyurethane foam and preparation method thereof
  • Efficient thermal-insulation ultralow-density polyurethane foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of high-efficiency thermal insulation ultra-low-density polyurethane foam is prepared from the following raw materials in parts by weight: 100 parts of polyether polyol (25 parts of polyether polyol A, 45 parts of polyether polyol B, polyether polyol B, 5 parts of ether polyol C, 15 parts of polyether polyol D, 10 parts of polyether polyol E); 50 parts of polyester polyol (25 parts of modified polyester polyol, 25 parts of aromatic polyester polyol); flake graphite 15 parts (the particle size of flake graphite is 1000); 13 parts of water; 1.0 parts of curing agent; Oxy-bisbenzenesulfonyl hydrazide); emulsifier, wherein the quality of the emulsifier is 1.30 compared to the total mass of other raw materials, and the emulsifier is polysiloxane.

Embodiment 2

[0026] Embodiment 2: a kind of high-efficiency thermal insulation ultra-low density polyurethane foam is prepared from the following raw materials in parts by weight: 100 parts of polyether polyol (35 parts of polyether polyol A, 30 parts of polyether polyol B, polyether polyol B, 15 parts of ether polyol C, 15 parts of polyether polyol D, 5 parts of polyether polyol E); 50 parts of polyester polyol (50 parts of modified polyester polyol); 10 parts of flake graphite (grain of flake graphite diameter is 7000); 20 parts of water; 3.5 parts of curing agent; 1.0 parts of foaming agent (foaming agent is 3-3'-disulfonyl hydrazide diphenyl sulfone); emulsifier, wherein the quality of emulsifier is the total mass of other raw materials The ratio is 1.20, and the emulsifier is polyoxyethylene ether.

Embodiment 3

[0027] Embodiment 3: a kind of high-efficiency thermal insulation ultra-low density polyurethane foam is prepared from the following raw materials in parts by weight: 100 parts of polyether polyol (20 parts of polyether polyol A, 40 parts of polyether polyol B, polyether polyol B, 20 parts of ether polyol C, 15 parts of polyether polyol D, 5 parts of polyether polyol E); 50 parts of polyester polyol (50 parts of aromatic polyester polyol); 20 parts of flake graphite (the Particle size is 3000); 15 parts of water; 2.5 parts of curing agent; 4.0 parts of foaming agent (foaming agent is 4-4'-oxobisbenzenesulfonyl hydrazide); emulsifier, wherein the quality of emulsifier other raw materials are total The mass ratio is 1.25, and the emulsifier is polyoxypropylene.

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Abstract

The invention discloses an efficient thermal-insulation ultralow-density polyurethane foam and a preparation method thereof. The efficient thermal-insulation ultralow-density polyurethane foam comprises the following raw materials: polyether polyol, polyester polyol, flake graphite, water, a curing agent, a foaming agent and an emulsifier, wherein the mass ratio of the emulsifier to the total mass of other raw materials is 1.15-1.35. The polyurethane foam prepared by the invention has the advantages of better compression strength and dimensional stability, uniform density distribution, good fluidity and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to an ultra-low-density polyurethane foam with high efficiency and heat preservation. Background technique [0002] Generally, the insulation layer of urban central heating pipes must use insulation materials with good heat insulation performance, no moisture absorption, long service life and low maintenance costs. Rigid polyurethane foam is widely used because it can meet these stringent requirements. At present, the preparation methods of this type of polyurethane foam mainly include pouring, spraying, or the use of special foaming agents, etc., but these methods have large overfilling, low production efficiency, high waste rate of foaming materials, and high requirements for equipment. , Foaming agent is not environmentally friendly, production safety is low, etc., there is an urgent need for a spray-type environmentally friendly foaming composite material, which can s...

Claims

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Application Information

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IPC IPC(8): C08G18/42C08G18/48C08J9/10C08L75/04C08K7/00C08G101/00
CPCC08J9/105C08J9/0066C08G18/4804C08G18/4018C08G18/4202C08J2203/04C08J2375/04C08G2101/00
Inventor 钟东定李翠娣丘梅娘钟东永李庆端
Owner 厦门柏伦亚聚氨酯科技有限公司
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