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High-glue content adhesive for flexible glass fiber felt

A glass fiber and adhesive technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of high curing temperature, long curing cycle, good flame retardancy, etc., to broaden the application field, The effect of shortening the hot pressing cycle and lowering the curing temperature

Inactive Publication Date: 2012-08-01
周介明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional adhesives used in domestic glass fiber mats use thermosetting resins as the main raw materials, such as urea-formaldehyde resins, which have excellent bonding properties, good flame retardancy, strong practicability, and low cost, but cotton mats are brittle. , poor stability, hydrolysis releases free formaldehyde; for example, acrylic resin has solvent resistance, weather resistance, and does not contain free formaldehyde, but it is flammable, poor in temperature resistance, irritating to the skin and respiratory tract, and is insoluble in water. Organic solvents are not environmentally friendly; for example, phenolic resin has excellent bonding performance, fire resistance, low smoke and low toxicity, and good chemical stability, but its glass wool products are brittle, have high internal stress, are prone to aging and cracking, and have high curing temperature. Disadvantages such as long curing cycle
At present, there is no adhesive that meets the comprehensive requirements of good bonding performance, good flame retardancy, low smoke density, no or less harmful gas release, and good flexibility.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 197Kg of water-soluble phenolic resin with a free formaldehyde content of 16%, 85Kg of urea with a nitrogen content of 46.4%, 362Kg of demineralized water, 11Kg of melamine, 12Kg of ammonium sulfate with a nitrogen content of ≥20%, 70Kg of hydroxyamino silicone oil with a solid content of 25%, 30Kg of γ-aminopropyltriethoxysilane, appropriate amount of oxalic acid to adjust the pH to 7.5, and 2320Kg of demineralized water.

[0030] The synthetic steps of above-mentioned adhesive in the present embodiment are as follows:

[0031] (1) Phenolic resin, urea and 362Kg demineralized water etc. of above-mentioned components are dropped in the reactor, stirred 2 hours under 70 ℃, reacted and generated urea-formaldehyde resin;

[0032] (2) Add 11Kg of melamine to the mixed solution of (1) above, and stir at 75°C for 14 hours until no melamine remains;

[0033] (3) Mix the above-mentioned components such as ammonium sulfate, hydroxyamino silicone oil, γ-aminopropyltriethoxysilan...

Embodiment 2

[0036] 40Kg of water-soluble phenolic resin with a free formaldehyde content of 17%, 18.8Kg of urea with a nitrogen content of 46.4%, 1.3Kg of melamine, 1.2Kg of ammonium sulfate with a nitrogen content of 20%, 10Kg of hydroxyl silicone oil, γ-aminopropyl triethoxy Base silane 1Kg, demineralized water 400Kg, ammonia water 10Kg.

[0037] The synthetic steps of above-mentioned adhesive in the present embodiment are as follows:

[0038] (1) Phenolic resin, urea and 21.2Kg demineralized water of above-mentioned components are dropped in the reactor, stirred at 65 ℃ for 2.5 hours, and reacted to generate urea-formaldehyde resin;

[0039] (2) Add 1.3Kg of melamine to the above (1), stir for 14 hours at 65°C, add 11Kg of melamine to the combined solution, and stir for 14 hours at 75°C until no melamine remains;

[0040] (3) Fully mix the hydroxyl silicone oil, ammonium sulfate, γ-aminopropyltriethoxysilane, ammonia and 60.8Kg demineralized water of the above components;

[0041] (4...

Embodiment 3

[0044] 300Kg of water-soluble phenolic resin with a free formaldehyde content of 13%, 130Kg of urea with a nitrogen content of 46.4%, 200Kg of melamine, 15.4Kg of ammonium sulfate, 100Kg of hydroxyl amino silicone oil, 50Kg of hydroxyl silicone oil, and 10Kg of γ-aminopropyltriethoxysilane , demineralized water 2770Kg, organic amine 5Kg.

[0045] The synthetic steps of above-mentioned adhesive in the present embodiment are as follows:

[0046] (1) The phenolic resin, urea, melamine and 370Kg demineralized water of above-mentioned components are dropped into the reactor, stirred at 65°C for 17 hours, and reacted to generate melamine urea-formaldehyde resin;

[0047] (2) The above-mentioned ammonium sulfate, hydroxyamino silicone oil, hydroxy silicone oil, hydroxyamino silicone oil, γ-aminopropyltriethoxysilane, organic amine and 2400Kg demineralized water were stirred and mixed at 50°C;

[0048] (3) Stir and mix the above (2) and (3) in a reaction kettle at room temperature. ...

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PUM

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Abstract

The invention discloses a high-glue content adhesive for a flexible glass fiber felt. The adhesive is composed of a water-solubility phenolic resin with high free formaldehyde content, urea, melamine, emulsified silicon oil, softened water, a silane coupling agent, a curing agent, a PH conditioning agent and the like. The water-solubility phenolic resin which has low smoke density, good flowing performance, adhesive property and flame retardant property and high free formaldehyde content is adopted in the adhesive to serve as the main raw material; the weather resistance performance and the heat resistance performance of the modified resin are increased; and the felt which has 13-22% of glue content and can be crimped and formed can be obtained. Simultaneously, the invention relates to a synthetic method of the formaldehyde-free glass fiber felt. The adhesive product provided by the invention has the excellent bonding strength, flexibility, water resistant performance, ageing resistant performance, high temperature resistant performance, corrosion resistant performance and flame retardant property, is free of the release of formaldehyde and free phenol and reduces the damage on human bodies, thereby meeting the requirement of environmental protection.

Description

technical field [0001] The invention relates to a flexible glass fiber felt adhesive, in particular to a flexible glass fiber felt adhesive with high glue content, and a method for synthesizing the formaldehyde-free glass fiber felt adhesive. Background technique [0002] At present, the traditional adhesives used in domestic glass fiber mats use thermosetting resins as the main raw materials, such as urea-formaldehyde resins, which have excellent bonding properties, good flame retardancy, strong practicability, and low cost, but cotton mats are brittle. , poor stability, hydrolysis releases free formaldehyde; for example, acrylic resin has solvent resistance, weather resistance, and does not contain free formaldehyde, but it is flammable, poor in temperature resistance, irritating to the skin and respiratory tract, and is insoluble in water. Organic solvents are not environmentally friendly; for example, phenolic resin has excellent bonding performance, fire resistance, low...

Claims

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Application Information

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IPC IPC(8): C09J161/28C09J161/14C09J11/06C09J11/08
Inventor 周介明陈照峰邱金莲
Owner 周介明
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