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Special formaldehyde-free setting agent for improving water resistance of mineral wool

A technology of mineral wool and setting agent, which is applied in the direction of climate change adaptation, can solve the problems of low wet strength, insufficient strength, and easy attenuation of mineral wool properties, and achieve good dry and wet strength and water resistance, good water resistance and aging resistance. Construction performance, the effect of convenient industrial use

Active Publication Date: 2022-04-22
JIANGSU AKST NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the strength of the existing formaldehyde-free sizing agent is insufficient, especially the low wet strength, which leads to the problem that the performance of the produced mineral wool is easy to attenuate under high temperature and high humidity conditions, and provides a special formaldehyde-free mineral wool with improved water resistance. Styling agent, calculated by 100% solid content, includes the following components in weight ratio:

Method used

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  • Special formaldehyde-free setting agent for improving water resistance of mineral wool
  • Special formaldehyde-free setting agent for improving water resistance of mineral wool
  • Special formaldehyde-free setting agent for improving water resistance of mineral wool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The composition of the resin prepolymer: acrylic acid: hydroxyethyl acrylate: butyl acrylate molar ratio is 98.0:1.0:1.0; the number average molecular weight Mn of the resin prepolymer is 2500; in terms of solid content, prepolymerize 100 parts of the above resin 34.5 parts of triethanolamine, 5 parts of catalyst sodium hypophosphite, mixed uniformly by adding an appropriate amount of water, and uniformly configured to a solid content of 50%, and then a part of the sample was used for curing at a high temperature of 60 ° C for 4 weeks to test its viscosity change , the other part of the sample is mixed with 0.3 parts of KH560 coupling agent, and the dry-wet bond strength, strength retention rate and formaldehyde content of the sizing agent are tested respectively according to the national standard.

Embodiment 2

[0056] The composition of the resin prepolymer: acrylic acid: hydroxyethyl acrylate: butyl acrylate molar ratio is 97.5:1.0:1.5; the number average molecular weight Mn of the resin prepolymer is 2500; in terms of solid content, prepolymerize 100 parts of the above resin 34.5 parts of triethanolamine, 5 parts of catalyst sodium hypophosphite, mixed uniformly by adding an appropriate amount of water, and uniformly configured to a solid content of 50%, and then a part of the sample was used for curing at a high temperature of 60 ° C for 4 weeks to test its viscosity change , the other part of the sample is mixed with 0.3 parts of KH560 coupling agent, and the dry-wet bond strength, strength retention rate and formaldehyde content of the sizing agent are tested respectively according to the national standard.

Embodiment 3

[0058] The composition of the resin prepolymer: acrylic acid: hydroxyethyl acrylate: butyl acrylate molar ratio is 96.0:1.0:3.0; the number average molecular weight Mn of the resin prepolymer is 2500; in terms of solid content, prepolymerize 100 parts of the above resin 34.5 parts of triethanolamine, 5 parts of catalyst sodium hypophosphite, mixed uniformly by adding an appropriate amount of water, uniformly configured to a solid content of 50%, and then a part of the sample was used for curing at a high temperature of 60 ° C for 4 weeks to test its viscosity change , the other part of the sample is mixed with 0.3 parts of KH560 coupling agent, and the dry-wet bond strength, strength retention rate and formaldehyde content of the sizing agent are tested respectively according to the national standard.

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Abstract

The invention discloses a special formaldehyde-free setting agent for mineral wool for improving water resistance, which comprises the following components in parts by weight on the basis of 100 percent of solid content: 100 parts of water-soluble resin prepolymer; 10 to 70 parts of polyol; and 2-15 parts of a catalyst. Wherein the water-soluble resin prepolymer is prepared from monomer raw materials through a copolymerization reaction, and the monomer raw materials comprise the following components in percentage by mass: 90.0-99.0% of an ethylenic bond type unsaturated carboxylic acid monomer; 0.5 to 5.0 percent of an ethylenic bond type unsaturated hydroxyl functional monomer; and 0.5 to 5.0 percent of hydrophobic olefinic bond type unsaturated monomer. The setting agent provided by the invention does not release free formaldehyde, meets the standard requirements of environmental protection, no VOC and no formaldehyde, has good stability, can be stably stored for a long time and is convenient for industrial use, meanwhile, the hardness of the produced mineral wool board is superior to that of a traditional acrylic acid homopolymer product, and the mineral wool board has good water resistance, aging resistance and construction performance.

Description

technical field [0001] The invention belongs to the field of polymer chemical materials, and in particular relates to a formaldehyde-free sizing agent specially used for mineral wool with improved water resistance. Background technique [0002] Mineral wool usually includes rock wool, glass wool and slag wool. It has light capacity, good heat preservation, low thermal conductivity, strong heat resistance, sound insulation, waterproof, stable chemical properties, acid and alkali resistance, and no corrosion. A new type of lightweight insulation material. Mineral wool and its products are widely used in metallurgy, construction, petroleum, chemical industry, textile, transportation and national defense and other industrial sectors, especially the application of rock wool in the mineral wool in the construction field has only been vigorously developed in recent years. There is still a lot of room for improvement in the development of agricultural and other fields. Its outstand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/20C08F220/18C04B26/06C04B111/27C04B111/20
CPCC08F220/06C04B26/06C04B2111/00017C04B2111/27C04B2201/50C04B2111/20C08F220/20C08F220/1804C04B14/46C08F220/18C08F8/14C08F2/44C08K5/5435
Inventor 朱玉国李炳泉董春生
Owner JIANGSU AKST NEW MATERIALS CO LTD