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Construction process of composite foam thermal-insulation boards

A technology of composite foam and construction technology, which is applied in thermal insulation, building components, insulation improvement, etc. It can solve the problems of poor durability, low compressive strength, and restrictions on the application of polystyrene boards, so as to reduce production costs, construction difficulties, and mechanical properties. and improved flame retardant properties, easy volatilization and molding curing effects

Inactive Publication Date: 2020-01-07
安徽润安景汇建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, conventional foam materials such as polystyrene boards have become the mainstream materials for building exterior wall insulation systems at home and abroad because of their good frost resistance, high strength, low water absorption, light weight, and convenient construction; Insulation materials also have disadvantages: the structure of the board is loose, there are many gaps between the internal particles, the thermal conductivity is high, and it is flammable.
The flammability defect of polystyrene foam makes it emit toxic smoke when it is burned. Even after flame retardant treatment, its flammability can only reach Class B, and its durability is poor, which seriously limits the application of polystyrene board in construction safety production. Polystyrene foam insulation boards are no longer popular in the Chinese market, but are about to be eliminated
Although phenolic and urea-formaldehyde foam materials have the advantages of high heat resistance and flame retardancy, they have the disadvantages of irregular structure and high water absorption, especially low foam elongation, low compressive strength, high brittleness, and easy to fall off. Powder and other problems limit the application of phenolic foam

Method used

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  • Construction process of composite foam thermal-insulation boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A construction technique of a composite foam insulation board, comprising the following steps:

[0022] a) Pretreatment construction: pre-foam the EPS beads through a steam boiler, dry them to obtain pre-expanded EPS granules, and open them at 25°C for 8 hours, then perform secondary foaming on the pre-expanded EPS granules to obtain For secondary foamed EPS pellets, the steam pressure of pre-foaming and secondary foaming are both 0.5MPa, and the temperature is 105°C;

[0023] b) Production and construction: Add 35 parts of phenolic resin, 5 parts of fatty acid polyoxyethylene ester, 5 parts of polyethylene glycol and 10 parts of aluminum hydroxide into the container, stir for 3 minutes at 25 ° C and 200 r / min, and then add 16 parts of n-pentyl After stirring evenly, continue to add 22 parts of curing agent and stir evenly. The curing agent is mixed with p-toluenesulfonic acid and hydrochloric acid according to the mass ratio of 1:2, and then add 40 parts of secondary f...

Embodiment 2

[0026] A construction technique of a composite foam insulation board, comprising the following steps:

[0027] a) Pretreatment construction: pre-foam the EPS beads through a steam boiler, dry them to obtain pre-expanded EPS granules, and open them at 25°C for 8 hours, then perform secondary foaming on the pre-expanded EPS granules to obtain For secondary foamed EPS pellets, the steam pressure of pre-foaming and secondary foaming are both 0.6MPa, and the temperature is 100°C;

[0028] b) Production and construction: Add 35 parts of phenolic resin, 4 parts of fatty acid polyoxyethylene ester, 5 parts of polyethylene glycol and 10 parts of aluminum hydroxide into the container, stir for 3 minutes at 25°C and 200r / min, and then add 10 parts of n-pentyl After stirring evenly, continue to add 20 parts of p-toluenesulfonic acid and stir evenly, then add 40 parts of secondary foamed EPS granules, use a kneader to fully mix the mixture, and pour the kneaded mixture into a preheated mol...

Embodiment 3

[0031] A construction technique of a composite foam insulation board, comprising the following steps:

[0032] a) Pretreatment construction: pre-foam the EPS beads through a steam boiler, dry them to get the pre-foamed EPS granules, and open them at 25°C for 9 hours, then perform secondary foaming on the pre-foamed EPS granules to get For secondary foamed EPS pellets, the steam pressure of pre-foaming and secondary foaming are both 0.6MPa, and the temperature is 105°C;

[0033] b) Production and construction: Add 38 parts of phenolic resin, 6 parts of fatty acid polyoxyethylene ester, 5 parts of polyethylene glycol and 10 parts of aluminum hydroxide into the container, stir for 3 minutes at 25°C and 200r / min, and then add 16 parts of n-pentyl After stirring evenly, continue to add 22 curing agents and stir evenly. The curing agent is mixed with p-toluenesulfonic acid and hydrochloric acid according to the mass ratio of 1:2, and then add 45 parts of secondary foamed EPS granule...

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Abstract

The invention relates to the technical field of composite insulation boards, and particularly relates to a construction process of composite foam thermal-insulation boards. The construction process comprises the following steps: pretreatment construction, production construction and field construction; in the step of pre-treatment construction, pre-foaming and secondary foaming on EPS beads are carried out; in the step of production construction, all the components are uniformly mixed and cured and maintained using molds, and the mass ratio of phenolic resin to polyoxyethylene fatty acid esterto polyethylene glycol to a flame retardant to n-pentane to secondary foaming EPS particles to a curing agent is 35-38: 4-6: 5: 10: 10-16: 40-45: 20-22. The obtained composite foam thermal-insulationboards are uniform and fine in pore size distribution, the apparent density of the composite foam thermal-insulation boards is reduced, and therefore the insulation performance of the composite foamthermal-insulation boards is improved. Compared with commercially available phenolic aldehyde insulation boards, the composite foam thermal-insulation boards have the advantages that the heat conductivity coefficient is greatly reduced, the mechanical property and the flame retardant property are remarkably improved, and the production cost and the construction difficulty are reduced.

Description

technical field [0001] The invention relates to the technical field of composite thermal insulation boards, in particular to a construction process of composite foam thermal insulation boards. Background technique [0002] Conventional foam materials such as polystyrene boards have become the mainstream materials for building exterior wall insulation systems at home and abroad because of their good frost resistance, high strength, low water absorption, light weight, and convenient construction. Insulation materials also have disadvantages: the structure of the board is loose, there are many gaps between the internal particles, the thermal conductivity is high, and it is flammable. The flammability defect of polystyrene foam makes it emit toxic smoke when it is burned. Even after flame retardant treatment, its flammability can only reach Class B, and its durability is poor, which seriously limits the application of polystyrene board in construction safety production. Polysty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/14C08L61/06C08L71/02C08L25/06C08K3/22C08K5/521E04B1/80
CPCC08J9/0038C08J9/0061C08J9/0066C08J9/141C08J2203/14C08J2361/06C08J2425/06C08J2471/02E04B1/80Y02B80/10Y02A30/242
Inventor 王新建王齐韩永康王帅万峰刘伟杨云龙丁敬丽朱实惠赵俊宏
Owner 安徽润安景汇建筑工程有限公司
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