A kind of acicular wollastonite/urea-formaldehyde resin formula for glass wool insulation material

A needle-shaped wollastonite and urea-formaldehyde resin technology, which is applied in the field of modified urea-formaldehyde resin formulations, can solve the problems of no substantial impact on the performance of urea-formaldehyde resin, and no report on permeability, so as to improve interfacial compatibility and excellent The effect of carrying effect and speeding up the dipping speed

Inactive Publication Date: 2017-12-05
NANJING NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, needle-like fillers with common length-to-diameter ratio (the length-to-diameter ratio is between 8:1 and 15:1) are widely used in the industry, which has almost no substantial impact on the performance of binders such as urea-formaldehyde resins.
Acicular wollastonite with high aspect ratio is a product that has appeared on the market in recent years. Its high aspect ratio has a good reinforcing effect on rubber, so it is used as a rubber reinforcing agent in the rubber industry, but its high The aspect ratio of acicular wollastonite to urea-formaldehyde resin and other binder properties, especially the improvement of permeability has not been reported

Method used

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  • A kind of acicular wollastonite/urea-formaldehyde resin formula for glass wool insulation material
  • A kind of acicular wollastonite/urea-formaldehyde resin formula for glass wool insulation material

Examples

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Effect test

Embodiment 1

[0026] A high-permeability acicular wollastonite / urea-formaldehyde resin formula for glass wool insulation materials, which consists of 65kg formaldehyde solution, 18kg urea, 10kg melamine, and 7kg acicular silica fume with an aspect ratio of 25:1 Stone, mix and stir evenly, and then adjust the pH value to 7-8 with sodium hydroxide to obtain acicular wollastonite / urea-formaldehyde resin with high permeability. Compared with pure urea-formaldehyde resin, the formula can increase the penetration speed of glass fiber by 30-35%, and the mechanical strength of the prepared glass fiber reinforced plastic product can be increased by 20-35%.

Embodiment 2

[0028] A high-permeability acicular wollastonite / urea-formaldehyde resin formula for glass wool insulation materials, which consists of 70kg formaldehyde solution, 15kg urea, 14kg melamine, and 1kg acicular silica fume with an aspect ratio of 25:1 Stone, mix and stir evenly, and then adjust the pH value to 7-8 with sodium hydroxide to obtain acicular wollastonite / urea-formaldehyde resin with high permeability. Compared with pure urea-formaldehyde resin, the formula can increase the penetration rate of glass fiber by 15-20%, and the mechanical strength of the prepared glass fiber reinforced plastic product can be increased by 10-20%.

Embodiment 3

[0030] A high-permeability acicular wollastonite / urea-formaldehyde resin formula for glass wool insulation materials, which consists of 55kg formaldehyde solution, 25kg urea, 10kg melamine, and 10kg acicular silica fume with an aspect ratio of 20:1 Stone, mix and stir evenly, and then adjust the pH value to 7-8 with sodium hydroxide to obtain acicular wollastonite / urea-formaldehyde resin with high permeability. Compared with pure urea-formaldehyde resin, the formula can increase the penetration rate of glass fiber by 25-35%, and the mechanical strength of the prepared glass fiber reinforced plastic product can be increased by 20-30%.

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Abstract

A new formulation of high-permeability urea-formaldehyde resin containing acicular wollastonite with a specific aspect ratio for glass wool insulation materials, by adding 1-10% of acicular wollastonite with an aspect ratio ≥ 20:1 to the urea-formaldehyde resin formulation Wollastonite filler can significantly improve the permeability and interfacial compatibility of urea-formaldehyde resin to glass wool, thereby effectively improving the production efficiency of glass wool insulation materials and the mechanical properties of products.

Description

technical field [0001] The invention relates to a modified urea-formaldehyde resin formula, in particular to a highly permeable acicular wollastonite / urea-formaldehyde resin formula which can be used for glass wool insulation materials. Background technique [0002] Glass wool is widely used because of its good thermal insulation performance, good sound insulation and sound absorption effect, low density, low thermal conductivity, flame retardant, environmental protection, chemical performance temperature, non-toxic and harmless, low price, and long service life. In all aspects of the field of insulation materials. [0003] Before use, glass wool must be dipped in glue to have certain mechanical strength and performance. Because of its excellent cost performance, urea-formaldehyde resin has been widely used as an efficient binder for glass wool insulation materials in glass wool impregnation treatment. At the same time, due to the strong polarity of the surface of glass wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/38C08K7/10
Inventor 章峻李振帅王毓彤程楚涵莫宏
Owner NANJING NORMAL UNIVERSITY
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