Phenolic aldehyde insulation board for external wall and preparation method of phenolic aldehyde insulation board

A phenolic insulation board and exterior wall technology, which is applied in the field of building exterior wall materials, can solve the problems of high strength and oxygen index of insulation boards, high thermal conductivity and low thermal conductivity of phenolic foam boards, and achieves improved mechanical properties and good compatibility. , the effect of improving strength and toughness

Inactive Publication Date: 2017-11-07
合肥泓定科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems of high thermal conductivity and poor toughness of phenolic foam boards, the present invention proposes a phenolic insulation board for exterior walls, which has high strength and oxygen index and low thermal conductivity

Method used

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  • Phenolic aldehyde insulation board for external wall and preparation method of phenolic aldehyde insulation board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of toughening agent is:

[0021] Dissolve 5 parts by weight of water glass and 5 parts by weight of sodium metaaluminate in 100 parts by weight of water to prepare a solution, then add 0.5 parts by weight of sodium lauryl sulfate to the solution, stir well, heat up to 70 ° C, add After reacting 10 parts by weight of polyethylene glycol for 2 hours, the solid substance obtained by rotary evaporation is the toughening agent.

Embodiment 2

[0023] The preparation method of toughening agent is:

[0024] Dissolve 8 parts by weight of water glass and 8 parts by weight of sodium metaaluminate in 100 parts by weight of water to prepare a solution, then add 1 part by weight of sodium hexadecylsulfonate to the solution, stir evenly, and heat up to 80°C. After adding 20 parts by weight of polyethylene glycol and reacting for 4 hours, the solid substance obtained by rotary evaporation is the toughening agent.

Embodiment 3

[0026] A phenolic insulation board for an exterior wall, calculated in parts by weight, comprising the following raw materials:

[0027] 70 parts of phenolic resins, 15 parts of polyether modified resins, 4 parts of plant fibers, 8 parts of blowing agents, 12 parts of p-toluenesulfonic acid and 4 parts of toughening agents in Example 1, blowing agents are ether, n-pentane and carbon dioxide mixture.

[0028] Preparation:

[0029] 1) Mix the phenolic resin, p-toluenesulfonic acid and the toughening agent of Example 1 uniformly at 50°C to obtain a mixture A;

[0030] 2) Mix and stir the mixture A, polyether modified resin, plant fiber and foaming agent evenly, quickly pour it into a mold preheated at 75°C for foaming, and then solidify.

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Abstract

The invention discloses a phenolic aldehyde insulation board for an external wall and a preparation method of the phenolic aldehyde insulation board. The phenolic aldehyde insulation board contains the following raw materials in parts by weight: 65-75 parts of phenolic resin, 10-20 parts of polyether modified resin, 3-6 parts of plant fibers, 5-10 parts of defoaming agent, 10-15 parts of an acidic curing agent and 3-6 parts of a flexibilizer, wherein the defoaming agent is a mixture of diethyl ether, n-pentane and carbon dioxide, and the flexibilizer is mainly prepared from water glass, sodium metaaluminate and polyethylene glycol. The preparation method comprises the following steps: (1) uniformly mixing the phenolic resin, the acidic curing agent and the flexibilizer at 40-60 DEG C, so as to obtain a mixture A; and (2) uniformly mixing and stirring the mixture A, the polyether modified resin, the plant fibers and the defoaming agent to obtain a mixture, rapidly pouring the mixture into a preheated mold for foaming, and carrying out curing. The phenolic aldehyde insulation board is high in strength and oxygen index and low in heat conductivity coefficient.

Description

technical field [0001] The invention belongs to the technical field of building exterior wall materials, and in particular relates to a phenolic thermal insulation board for exterior walls and a preparation method thereof. Background technique [0002] At present, about 80% of building insulation materials are organic combustible materials. Looking at the market, the existing organic insulation materials are difficult to meet the national requirements for fire performance, while inorganic materials cannot meet the requirements of the country due to their high water absorption and easy "condensation". Therefore, with the gradual promulgation and implementation of national policies, research and development of products with both thermal insulation and fire protection functions is an irreversible development trend of the external wall insulation market in the future. Modification of organic thermal insulation materials with inorganic materials can play a "double insurance" effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L97/02C08L71/02C08L71/00C08K13/02C08K3/34C08K3/24C08J9/14C08J9/12
CPCC08L61/06C08J9/122C08J9/141C08J9/142C08J2203/202C08J2361/06C08J2471/00C08L2201/02C08L2203/14C08L2205/035C08L2205/16C08L97/02C08L71/02C08L71/00C08K13/02C08K3/34C08K3/24
Inventor 汪琦汪泽维
Owner 合肥泓定科技有限公司
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