Preparation method of flame-retarding and heat-insulating foamed polyurethane

A foamed polyurethane, flame retardant and thermal insulation technology is applied in the preparation of flame retardant and thermal insulation foamed polyurethane, and in the field of new environmentally friendly building materials. Improve mechanical strength and structural stability, stable performance, and improve the effect of dispersion effect

Inactive Publication Date: 2018-12-18
刘永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current insulation materials mainly include aluminum silicate insulation materials, phenolic foam materials, inorganic insulation mortar, extruded board, glass wool, etc. Polyurethane foam materials are also an important one, but the flame retardant effect of polyurethane foam materials is poor. , it is easy to cause fire,

Method used

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  • Preparation method of flame-retarding and heat-insulating foamed polyurethane
  • Preparation method of flame-retarding and heat-insulating foamed polyurethane
  • Preparation method of flame-retarding and heat-insulating foamed polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] A preparation method of flame-retardant thermal insulation foamed polyurethane includes the following steps:

[0023] Mix the polyether polyol and polyester polyol according to the proportion, vacuum dehydration, heat up to 39℃ and stir to react, then put in the flame retardant, stir at 1200r / min for 50-60min, then add epoxy soybean oil, extend chain Stabilizer, stabilizer, catalyst, stir at 1000r / min for 15-20min, then add basalt fiber, continue to stir for 5min, then treat at 0.2Mpa for 5-10min, add the foaming agent storage tank, and then add the foaming agent Add isocyanate and isocyanate to foaming machine separately, use high-pressure foaming machine to foam, keep the mold temperature at 50-85℃, and shape to make foamed polyurethane;

[0024] The raw materials are as follows by weight: 52 parts polyether polyol, 65 parts polyester polyol, 80 parts isocyanate, 3.5 parts epoxy soybean oil, 5 parts flame retardant, 4.2 parts chain extender, 0.2 parts sta...

Example Embodiment

[0033] Example 2

[0034] Compared with Example 1, it is made of the following raw materials: 55 parts of polyether polyol, 62 parts of polyester polyol, 100 parts of isocyanate, 4 parts of epoxy soybean oil, 6 parts of flame retardant, and 5.2 parts of chain extender Parts, 0.22 parts of stabilizer, 24 parts of basalt fiber, 0.9 parts of foaming agent, 1.4 parts of catalyst. Other steps are as in Example 1.

Example Embodiment

[0035] Example 3

[0036] Compared with Example 1, it is made of the following raw materials: 55 parts of polyether polyol, 63 parts of polyester polyol, 105 parts of isocyanate, 3.6 parts of epoxy soybean oil, 7 parts of flame retardant, 4 parts of chain extender -7 parts, 0.2 parts of stabilizer, 25 parts of basalt fiber, 0.9 parts of foaming agent, 1.3 parts of catalyst. Other steps are as in Example 1.

[0037] In order to verify the influence of the flame retardant and basalt fiber in this application on the performance of the foamed polyurethane in this application, this application sets the following control group to compare the performance of the prepared polyurethane.

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Abstract

The invention relates to an environmentally-friendly, heat-insulating and sound-insulating foamed polyurethane material for external walls of buildings. The material is prepared from 50-55 parts of polyether polyol, 60-65 parts of polyester polyol, 55-200 parts of isocyanate, 2-4 parts of epoxidized soybean oil, 4.5-10 parts of a flame retardant, 4-7 parts of a chain extender, 0.15-0.3 part of a stabilizer, 22-25 parts of basalt fibers, 0.6-1.2 parts of a foaming agent and 1-1.5 parts of a catalyst. The polyurethane foam material for the external walls of the buildings improves the flame retarding, waterproofing and heat-insulating properties of the foamed polyurethane through the combination of above raw materials, so the material has balanced comprehensive performances, and is suitable for the external walls of the buildings, with high requirements for environmental protection and the like.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a novel environment-friendly building material, in particular to a method for preparing flame-retardant and heat-retaining foamed polyurethane. Background technique [0002] In order to improve the environmental protection of buildings and improve the thermal insulation performance of buildings, insulation materials are often used on the facades of buildings. The current external wall insulation materials include hollow blocks, aerated blocks, gypsum hollow blocks, and aerated fly ash. There are many kinds of bricks, porous clay bricks, GRC wall panels, reinforced fiber cement boards, sandwich panels, fly ash aerated wall panels and composite thermal insulation wall panels. As far as product performance is concerned, each has its own merits; but the proportion of composite walls in foreign developed countries is high. [0003] The current insulation materials mainly incl...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/36C08G18/40C08K13/06C08K3/22C08K3/34C08K3/32C08K7/24C08J9/08C08G101/00
CPCC08G18/36C08G18/4018C08G18/42C08G18/48C08G18/6629C08K3/22C08K3/32C08K3/346C08K7/24C08K13/06C08K2003/2227C08K2003/327C08G2110/0083
Inventor 刘永
Owner 刘永
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