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Sealed cell toughening foamed material and preparation thereof

A phenolic foamed plastic and toughening technology, applied in the field of phenolic foamed plastics, can solve the problems of increased, unsatisfactory thermal conductivity and the like

Inactive Publication Date: 2005-05-11
厦门高特高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that phenolic foam has a less than ideal thermal conductivity and increases with application time
In addition, brittleness is also a serious problem of phenolic foam.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the phenol and formaldehyde mol ratio of its synthetic modified phenolic resin of said closed-cell toughened phenolic foam of the present invention is 1: 2, and its component and the content by weight are (taking phenol as 100 parts): formaldehyde 170, the catalyst uses strong base 1, metal oxide 1, silicon intermediate 6, ammonia compound 5, ester compound 3; the foaming formula is resin 100, the surfactant is L-158 3.5, and the foaming agent is selected from alkanes 8. The curing agent is selected from p-toluenesulfonic acid 10.

[0020] The steps of the closed-cell toughened phenolic foam preparation method are as follows:

[0021] 1. Mix phenol, formaldehyde, silicon intermediate and catalyst according to their content, react at 60°C for 50 minutes, and react at 95°C for 150 minutes;

[0022] 2. Add ammonia compounds to continue the reaction, the temperature is 95°C, and the reaction time is 10 minutes;

[0023] 3. Add ester compounds and dehydrate u...

Embodiment 2

[0025] Embodiment 2: closed-cell toughened phenolic foamed plastics The phenol and formaldehyde molar ratio of its synthetic modified phenolic resin is 1: 1.5, and its component and the content by weight are (with phenol being 100 parts): formaldehyde 125, catalyst adopts strong Alkali 3, metal oxide 0.5, silicon intermediate 8, ammonia compound 2, ester compound 6; foaming formula is resin 100, surfactant is 2, foaming agent is selected from petroleum ether 4, curing agent is selected from phenol Sulfonic acid 15.

[0026] The steps of the closed-cell toughened phenolic foam preparation method are as follows:

[0027] 1. Mix phenol, formaldehyde, silicon intermediate and catalyst according to their content, react at 80°C for 45 minutes, and react at 90°C for 120 minutes;

[0028] 2. Add ammonia compounds to continue the reaction, the temperature is 100°C, and the reaction time is 5 minutes;

[0029] 3. Add ester compounds and dehydrate under reduced pressure to obtain modif...

Embodiment 3

[0031] Embodiment 3: the phenol and the formaldehyde mol ratio of its synthetic modified phenolic resin of said closed-cell toughened phenolic foam of the present invention are 1: 1.3, and its component and the content by weight are (taking phenol as 100 parts): formaldehyde 110, the catalyst uses strong base 0.5, metal oxide 3, silicon intermediate 4, ammonia compound 10, ester compound 2; the foaming formula is resin 100, the surfactant is "Tween 80" 4, and the foaming agent is selected From alkanes 12, the curing agent is selected from p-toluenesulfonic acid 8.

[0032] The steps of the closed-cell toughened phenolic foam preparation method are as follows:

[0033] 1. Mix phenol, formaldehyde, silicon intermediate and catalyst according to their content, react at 60°C for 60 minutes, and react at 100°C for 130 minutes;

[0034] 2. Add ammonia compounds to continue the reaction, the temperature is 100°C, and the reaction time is 5 minutes;

[0035] 3. Add ester compounds a...

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Abstract

The obturator toughened phenolic foam plastic and its preparation method. The synthesis of modified phenol formaldehyde resin is produced from phenol and formaldehyde in the proportion of 1:1.30-2.50(mol) as the raw. The modified assistant is silicon intermediate, ester compound and ammonia compound. Components comprise phenol, formaldehyde, accelerating agent, silicon intermediate, ester compound and ammonia compound. The foaming batch formula includes resin, surfactant, blister, solidifying assistant agent and solidified agent. Process: mixing at a definite proportion, dehydrating using the ester compound and ammonia compound, mixing and solidifying through heating after putting in the solidified agent. Features: no greenhouse effect coefficient and improving the developing of the phenolic foam plastic. >=85% obturator ratio, <=25% brittleness and <=0.025 (W / m / .k) coefficient of heat conductivity.

Description

(1) Technical field [0001] The invention relates to a phenolic foamed plastic, especially a closed-cell toughened phenolic foamed plastic and a preparation method thereof. (2) Background technology [0002] The present invention is aimed at R-type phenolic resin and foamed plastics made therefrom. The phenolic foam produced by phenolic resin has the characteristics of low thermal conductivity, non-combustibility, low smoke toxicity, and low value. Phenolic foam has been around for many years and is the most fire resistant of the insulating foams. Despite these advantages, phenolic foams are not widely used in the insulation market. The main reason is that phenolic foams have less than ideal thermal conductivity and will increase with application time. In addition, brittleness is also a serious problem of phenolic foam. [0003] CN 1281480A patent proposes to use (C a f b ) 3 N is used as a blowing agent to produce phenolic foam with excellent thermal insulation perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/10C08J9/02
Inventor 汪坤明张均明杨成根
Owner 厦门高特高新材料有限公司