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Method for preparing high flame-retardant insulation board by mixing and foaming phenolic resin and polystyrene

A technology of phenolic resin and polystyrene, which is used in the field of mixing and foaming phenolic resin and expandable polystyrene to prepare high flame-retardant thermal insulation boards, can solve the problems of low production efficiency, uneven upper and lower structures, inaccurate control of process conditions, etc. problem, to achieve the effect of high production efficiency, uniform thickness and environmentally friendly process

Active Publication Date: 2016-08-24
上海高分子功能材料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly solves the problem of uneven upper and lower structures, inaccurate control of process conditions and low production efficiency when the mixture of phenolic resin and expandable polystyrene is left in the mold in the production process of composite phenolic resin foam materials in the prior art. The problem

Method used

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  • Method for preparing high flame-retardant insulation board by mixing and foaming phenolic resin and polystyrene

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0041] Table 1, the proportioning of each component in parts by weight in three kinds of embodiments

[0042]

[0043] catalyst

[0044] Component one of Example 1 in above-mentioned table 1 is phenolic resin; Component two is furfural phenolic resin; Component three is expandable polystyrene; Curing agent is sulfuric acid; Catalyst is sodium carbonate; Magnesium; auxiliary agent is fatty alcohol polyoxyethylene ether.

Embodiment 2

[0045] Component one of embodiment 2 is phenolic resin; Component two is furfural urea-formaldehyde resin; Component three is expandable polystyrene; Curing agent is sulfuric acid; Catalyst is ammonia water; Flame retardant is aluminum hydroxide; Fatty alcohol polyoxyethylene ether.

Embodiment 3

[0046] In Example 3, component one is phenolic resin; component two is furfural urea-formaldehyde resin; component three is expandable polystyrene; curing agent is phosphoric acid; catalyst is hydrogen peroxide; flame retardant is ammonium dihydrogen phosphate.

[0047] Following Table 2, Table 3, and Table 4 are the processing conditions of Embodiment 1, Embodiment 2, and Embodiment 3 respectively.

[0048] Table 2, the process condition of embodiment 1

[0049] Weight loss scale - preheating temperature (°C)

40

Loss in weight scale-feeding speed (kg / min)

1.5

Mixer liquid residence time (s)

40

Conveyor belt transmission speed (m / min)

1

Outlet temperature (°C)

75

Surface temperature of the conveyor belt in the oven (°C)

60

Pressure roller foaming temperature

100～120

[0050] Table 3, the process condition of embodiment 2

[0051] Weight loss scale - preheating temperature (°C)

40

L...

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Abstract

The invention discloses a method for preparing a highly flame-retardant thermal insulation board by mixing and foaming phenolic resin and polystyrene. The preparation method comprises the following steps of designing a continuous production line according to characteristics of each component, precisely controlling charging and a temperature by a charging system; sufficiently mixing and dispersing mixed feed liquid by rotating and shearing effect inside mixer equipment; then, feeding the mixed feed liquid into an oven by a conveyor belt, foaming in the oven and laminating by a pressure roller to form a board material and conveying the board material out of the oven; and finally, naturally cooling, curing and forming to obtain the highly flame-retardant thermal insulation board. The method disclosed by the invention has advantages that the method is simple and easy to operate and high in production efficiency, satisfies the trend and requirements of less material waste and environment-friendly process; technical problems that upper and lower structures are not uniform and process condition control is not precise when a material mixture of phenolic resin and an expandable polystyrene is stewed in the process method in the prior art are solved.

Description

technical field [0001] The invention relates to a production process of a high flame-retardant thermal insulation board, in particular to a process method for preparing a high flame-resistant thermal insulation board by mixing and foaming phenolic resin and expandable polystyrene. Background technique [0002] In the production of traditional insulation materials, mold foaming is used. This method uses manual mixing, and then pours the mixture into a separate mold. Before foaming, the mixture has a standing process, so this foaming method has automation The degree is not high, the production efficiency is low, and the product structure is single. Moreover, in the process of mixing the phenolic resin and the expandable polystyrene, uneven upper and lower structures are likely to occur, and the control of process conditions is not precise. After the mold is foamed, the foam needs to be cut additionally, resulting in a large waste of materials. In the existing composite phenol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/00C08L61/06C08L61/24C08L25/06C08K3/22C08K3/32B29C44/22B29C44/34
Inventor 穆肖斌卑军
Owner 上海高分子功能材料研究所
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