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A kind of preparation method of fiber-reinforced phenolic insulation material

A technology of phenolic insulation and fiber reinforcement, which is applied in the field of preparation of fiber reinforced phenolic insulation materials, can solve the problems of other properties of phenolic insulation materials not mentioned, fast local reaction, and inconspicuous effect, and achieve cheap raw materials and greatly improved brittleness , the effect of short curing time

Active Publication Date: 2016-08-24
菲沐盛(山西)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the mass percentage concentration of the acid curing agent is relatively high, which is 60% to 80%, which will lead to a faster local reaction during the mixing process, making it difficult for the raw materials to mix evenly, and affecting other properties of the phenolic foam; the curing temperature in the invention High (90-130°C), which increases the cost to a certain extent; in this invention, the pH of the phenolic insulation material is increased from 2 to 3 to about 4. Although there is a certain improvement, the effect is not obvious, and the invention does not Mention other properties of phenolic insulation materials, such as mechanical properties, so there are many deficiencies

Method used

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  • A kind of preparation method of fiber-reinforced phenolic insulation material
  • A kind of preparation method of fiber-reinforced phenolic insulation material
  • A kind of preparation method of fiber-reinforced phenolic insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix 100 parts of resole phenolic resin with 4 parts of Tween-80 and 7 parts of n-pentane, stir at 1000 rpm for 5 min under an electric stirrer, then add 12 parts of 40 wt% sulfuric acid and 6 parts of 50 wt% % of curing agent composed of p-toluenesulfonic acid , stirred rapidly at 1500 rpm, quickly filled the mold with the mixture after 2 minutes, foamed and solidified at 70°C, demoulded after 30 minutes, and cooled to obtain phenolic insulation material A.

[0048] The apparent density of insulation material A is 37.13kg / m 3 , The compressive strength is 0.18MPa, and the bending fracture force is 12N.

Embodiment 2

[0050] Mix 100 parts of resole phenolic resin with 3% reinforcing fiber (composed of sisal with a length of 2 mm and bamboo fiber with a length of 18 mm in a mass ratio of 1:2), stir at a speed of 1000 rpm for 1 h, and then successively Add 3 parts of Tween-80, 9 parts of n-pentane, stir at 1000 rpm for 5 minutes, then add a curing agent mixed with 6 parts of 40 wt% sulfuric acid and 10 parts of 50 wt% p-toluenesulfonic acid , stirred rapidly at 1500 rpm, quickly filled the mold with the mixture after 2 minutes, foamed and solidified at 60°C, demoulded after 30 minutes, and cooled to obtain phenolic insulation material B.

[0051] The apparent density of insulation material B is 49.72kg / m 3 , The compressive strength is 0.30MPa, and the bending fracture force is 21N.

Embodiment 3

[0053] Mix 100 parts of resole phenolic resin with 6% reinforcing fiber (the mass ratio of jute with a length of 5mm and bamboo fiber with a length of 15mm is 1:4), stir at a speed of 1000 rpm for 1h, and then Add 5 parts of Tween-80 and 10 parts of n-pentane in sequence, stir at 1000 rpm for 5 minutes, then add a curing agent mixed with 8 parts of 50 wt% sulfuric acid and 8 parts of 50 wt% p-toluenesulfonic acid , stirred rapidly at 1500 rpm, quickly filled the mold with the mixture after 2 minutes, foamed and solidified at 60°C, demoulded after 30 minutes, and cooled to obtain phenolic insulation material C.

[0054] The apparent density of insulation material C is 54.13kg / m 3 , The compressive strength is 0.35MPa, and the bending fracture force is 28N.

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Abstract

A preparation method of a fiber-reinforced phenolic thermal insulation material. The method comprises stirring and mixing a resole phenolic resin with reinforcing fibers so that the reinforcing fibers are evenly dispersed in the phenolic resin; then adding surfactant Tween-80 and foaming Stir with n-pentane agent; finally add curing agent and stir quickly to evenly fill the mold, demould after foaming and solidification, and cool to obtain fiber-reinforced phenolic insulation material. By adjusting the proportion and concentration of the curing agent and the amount of reinforcing fibers, the method makes the phenolic thermal insulation material have uniform pore size distribution, high mechanical properties, short curing time, cheap raw material prices, and simple preparation methods, which can not only effectively strengthen the phenolic thermal insulation material. Mechanical properties, and save production costs.

Description

technical field [0001] The invention relates to a preparation method of a fiber-reinforced phenolic thermal insulation material, more specifically, a preparation method for reinforcing the phenolic thermal insulation material by adjusting the formula of a curing agent and a reinforcing fiber. Background technique [0002] In recent years, building fire accidents have occurred from time to time, such as the 11.15 fire in Jing'an District, Shanghai, which aroused widespread concern about fire accidents. There are many reasons for the fire, and one of the important reasons is that the insulation materials used in the buildings are not up to standard. Insulation materials are materials used in buildings to control the outflow of indoor heat, and are generally divided into two categories: inorganic insulation materials and organic insulation materials. Inorganic thermal insulation materials are difficult to meet the actual application requirements due to their large volume and l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08L97/00C08J9/14C08J5/06
Inventor 魏丽乔郭睿劼赵宇航王慧芳牛宝龙晏泓
Owner 菲沐盛(山西)材料科技有限公司