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. , th

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

Example Embodiment

[0025] Example 1: An ultra-low-density polyurethane foam, which is highly efficient, is prepared from the following weight of the raw material: polyether polyol 100 parts (polyether polyol A 25 parts, 45 polyether polyols B, polyether polyol) C5 parts of ether polyol, polyether polyol D15 parts, polyether polyol E10 parts); 50 parts of polyester polyol (25 copied polyester polyols, 25 parts of aromatic polyester); sheet graphite 15 parts (1000 particle size of the sheet graphite); 13 parts of water; 1.0 curing agents; 2.0 parts of the foaming agent (blowing agent comprising 3-3'-sulfonylhydrazine diphenyl sulfone and 4-4'- Oxygen bisphenylsulfonyl hydrazide; emulsifier, wherein the total mass of the emulsifier has a ratio of 1.30, and the emulsifier is a polysiloxane.

Example Embodiment

[0026] Example 2: A high-efficiency ultra-low-density polyurethane foam is prepared from the weight of the following weight: 100 parts of the polyether polyol (polyether polyol A 35 parts, 30 polyether polyols B, polyether polyol B, polyether C15 parts of the ether polyol, polyether polyol D15 parts, polyether polyol E 5 parts); 50 parts of polyester polyol (50 parts of modified polyester polyol); 10 parts of sheet graphite (granular graphite The diameter is 7000); 20 parts of water; the curing agent is 3.0 parts; the foaming agent is 1.0 parts (the blowing agent is 3-3'-sulfonylhydrazine diphenone); the emulsifier, wherein the emulsifier is used in total quality. The ratio is 1.20, and the emulsifier is polyoxyethylene ether.

Example Embodiment

[0027] Example 3: A high-efficiency ultra-low-density polyurethane foam, is prepared from the weight of the following weights: 100 parts of the polyether polyol (20 parts of polyether polyol A, 40 parts of polyether polyol B, polyether polyol) 20 parts of the ether polyol C, polyether polyol D15 parts, polyether polyol E 5 parts); 50 parts of polyester polyol (50 parts of aromatic polyester polyol); 20 parts of sheet graphite (sheet graphite) The particle diameter is 3000); 15 parts of water; 2.5 curing agents; 4.0 parts of the foaming agent (a blowing agent is 4-4'-oxidine sulfonyl hydrazide); the emulsifier, wherein the emulsifier is mainly used. The ratio of mass 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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