Insulated fireproof material of polyurethane cement foam and preparation method of insulated fireproof material

A thermal insulation and fireproof material, polyurethane technology, applied in the field of building materials and its preparation, can solve the problems of low strength, easy pulverization, easy to breed bacteria, etc., achieve the effect of large elastic modulus and overcome easy pulverization

Inactive Publication Date: 2012-10-03
安徽省思维新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is manifested in the shortcomings of brittle foam, easy pulverization, low strength, etc., and there are also shortcomings such as dust and fine fibers, which not only pollute the air but also easily breed bacteria, which has already become a hidden danger to people's health, and the thermal insulation performance is limited. Applications are limited

Method used

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  • Insulated fireproof material of polyurethane cement foam and preparation method of insulated fireproof material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment first prepares water-soluble polyurethane:

[0025] (1) After soaking diethylene glycol through 4? molecular sieve for 48 h, react with isophorone diisocyanate under nitrogen protection to prepare polyurethane prepolymer, diethylene glycol and isophorone diisocyanate The molar ratio is 1:1.5, the reaction time is 3h, and the temperature is at 70°C;

[0026] (2) Polyethylene glycol monomethyl ether was vacuumized and dehydrated at 110°C for 2 hours, then reacted with the polyurethane prepolymer prepared in step (1) at 100°C under nitrogen protection for 4 hours, and the temperature of the product was lowered to 40°C. Content 50-60% is diluted with water to obtain water-soluble polyurethane, and the molar ratio of polyethylene glycol monomethyl ether and diethylene glycol is 1:1.

[0027] The structural characterization of the water-soluble polyurethane prepared in this example was detected by an infrared spectrometer (Bruker, Vector-22). figure 1 The ch...

Embodiment 2

[0034] This embodiment first prepares water-soluble polyurethane:

[0035] (1) After soaking diethylene glycol through 4? molecular sieve for 48 h, react with isophorone diisocyanate under nitrogen protection to prepare polyurethane prepolymer, diethylene glycol and isophorone diisocyanate The molar ratio is 1:3, the reaction time is 5h, and the temperature is 90°C;

[0036] (2) Polyethylene glycol monomethyl ether was vacuum dehydrated at 110°C for 3 hours, then reacted with the polyurethane prepolymer prepared in step (1) at 120°C for 6 hours under nitrogen protection, and the temperature of the product was lowered to 50°C. Content 50-60% is diluted with water to obtain water-soluble polyurethane, and the molar ratio of polyethylene glycol monomethyl ether and diethylene glycol is 4:1.

[0037] A preparation method of polyurethane cement foam insulation and fireproof material, comprising the following steps:

[0038] (1) Add 32 parts by weight of warm water at 50°C to 70 p...

Embodiment 3

[0043] This embodiment first prepares water-soluble polyurethane:

[0044] (1) After soaking diethylene glycol through 4? molecular sieve for 48 h, react with isophorone diisocyanate under nitrogen protection to prepare polyurethane prepolymer, diethylene glycol and isophorone diisocyanate The molar ratio is 1:2, the reaction time is 4h, and the temperature is at 80°C;

[0045] (2) After vacuum dehydration of polyethylene glycol monomethyl ether at 110°C for 2.5h, react with the polyurethane prepolymer prepared in step (1) at 110°C for 5h under nitrogen protection, and lower the temperature of the product to 45°C, according to Solid content of 50-60% is diluted with water to obtain water-soluble polyurethane, and the molar ratio of polyethylene glycol monomethyl ether to diethylene glycol is 2:1.

[0046] A preparation method of polyurethane cement foam insulation and fireproof material, comprising the following steps:

[0047] (1) Add 30 parts by weight of warm water at 40°...

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Abstract

The invention discloses an insulated fireproof material of polyurethane cement foam and a preparation method of the insulated fireproof material. The insulated fireproof material comprises 50-70 parts of cement, 27-32 parts of water, 1.5-2 parts of foaming agent, 0.2-0.5 parts of early strength agent, 0.5-1.5 parts of water reducer and 5-25 parts of soluble polyurethane. The insulated fireproof material of polyurethane cement foam disclosed by the invention is prepared by the processes of leading in a lot of miniature, stable and sealed air bubbles and a little of polyurethane into cement, and uniformly dispersing the air bubbles and polyurethane in cement matrix. The insulated fireproof material overcomes the defects that inorganic material is easy to pulverize, low in strength and poor in heat preservation effect, and has the advantages of light material, sound insulation, thermostability, large elasticity modulus, corrosion resistance, durability and the like.

Description

technical field [0001] The invention relates to a building material with fireproof and heat-preserving functions and a preparation method thereof, in particular to a polyurethane cement foam heat-preservation and fireproof material and a preparation method thereof. Background technique [0002] Traditional organic insulation materials such as polystyrene and polyurethane have strong resistance to external forces, and also have the advantages of light weight, low thermal conductivity, and good heat resistance, and are widely used in existing energy-saving buildings. However, there is a common disadvantage that heat preservation and fire prevention cannot be taken into account. When burning, a large amount of heat is released and a large amount of toxic smoke is generated, which will not only accelerate the spread of the fire, but also easily cause casualties to trapped people and rescuers. Traditional inorganic materials such as rock wool and glass wool have the advantages of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/04C04B38/02
Inventor 胡先海罗俊杰罗志勇付昌春
Owner 安徽省思维新型建材有限公司
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