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A high-impact class A non-combustible high-pressure decorative board and its preparation method

A high-impact, decorative board technology, applied in the field of decorative materials, can solve the problems of reducing thermal shrinkage stress of melamine-formaldehyde resin decorative coatings, affecting decorative effects, and yellowing of phenolic resins.

Active Publication Date: 2021-07-06
江苏博大新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The color of the phenolic resin is reddish brown. With the passage of time and the change of air humidity, the phenolic resin is easy to migrate to the surface of the decorative layer with the alkaline substances in the inorganic board to form yellowing, thus affecting the decorative effect.
[0004] At present, it is reported that adding caprolactam, p-toluene yellow amide, polyvinyl alcohol, starch, α-cellulose, etc. in the process of using melamine formaldehyde resin improves the brittleness and impact resistance of melamine formaldehyde resin and has achieved certain results (He Naiye. Low pressure short Research on the modification of melamine-formaldehyde resin for periodic impregnation [D]. Northeast Forestry University, 2010.), however, there are few reports on how to reduce the thermal shrinkage stress of melamine-formaldehyde resin decorative coatings

Method used

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  • A high-impact class A non-combustible high-pressure decorative board and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Composite the decorative layer, buffer layer, inorganic plate, buffer layer, and decorative layer in order from top to bottom. The thickness of the decorative layer from top to bottom is 0.06mm, the thickness of the buffer layer is 0.04mm, and the thickness of the inorganic plate is 4mm. The thickness of the buffer layer is 0.04mm, the thickness of the decorative layer is 0.06mm, and then placed in a multi-layer high-pressure press for compression molding, the unit pressure is 6.5MPa, the heating time of the hot press is 15min, the pressure holding time is 35min, and the pressure holding cooling time After 30 minutes, the plate core temperature reaches 135°C and is cooled to form. After the plate core temperature drops below 50°C, the pressure is released and the machine is unloaded. After the slab is sawed, a high-impact A-grade non-combustible high-pressure decorative plate is obtained.

Embodiment 2

[0037] Composite the decorative layer, buffer layer, inorganic plate, buffer layer, and decorative layer in order from top to bottom. The thickness of the decorative layer from top to bottom is 0.2mm, the thickness of the buffer layer is 0.3mm, and the thickness of the inorganic plate is 25mm. The thickness of the buffer layer is 0.3mm, the thickness of the decorative layer is 0.2mm, and then placed in a multi-layer high-pressure press for compression molding, the unit pressure is 8MPa, the heating time of the hot press is 20min, the pressure holding time is 40min, and the pressure holding cooling time is 45min , the plate core temperature reaches 135°C and is cooled to form. After the plate core temperature drops below 50°C, the pressure is released and the machine is unloaded.

Embodiment 3

[0039]Composite the decorative layer, buffer layer, inorganic plate, buffer layer, and decorative layer in order from top to bottom. The thickness of the decorative layer from top to bottom is 0.1mm, the thickness of the buffer layer is 0.2mm, and the thickness of the inorganic plate is 8mm. The thickness of the buffer layer is 0.2mm, the thickness of the decorative layer is 0.15mm, and then placed in a multi-layer high-pressure press for compression molding, the unit pressure is 10MPa, the heating time of the hot press is 17min, the pressure holding time is 38min, and the pressure holding cooling time is 40min , the plate core temperature reaches 135°C and is cooled to form. After the plate core temperature drops below 50°C, the pressure is released and the machine is unloaded.

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Abstract

The invention relates to the technical field of decorative materials, in particular to a high-impact grade A non-combustible high-pressure decorative plate and a preparation method thereof. The melamine-formaldehyde resin-impregnated coating on the surface of the decorative board has a large thermal shrinkage stress in a continuous high-temperature environment, which can easily cause cracks and curling on the entire decorative board surface, thus losing the decorative effect. Based on the above problems, the present invention provides a high-impact grade A non-combustible high-pressure decorative board, which includes a decorative layer, a buffer layer, an inorganic plate, a buffer layer, and a decorative layer from top to bottom. The decorative layer is made of decorative fibers impregnated in modified Formed in melamine-formaldehyde resin, a certain amount of water-based polyurethane is added to the modified melamine-formaldehyde resin during use, which effectively reduces the thermal shrinkage stress of the melamine-formaldehyde resin-impregnated coating on the surface of the decorative panel, and greatly improves the high-impact type A grade The non-combustible high-pressure decorative board is stable in high-temperature environments, and can realize single-layer multi-pressure, reduce energy loss, and have good application prospects.

Description

technical field [0001] The invention relates to the technical field of decorative materials, in particular to a high-impact grade A non-combustible high-pressure decorative plate and a preparation method thereof. Background technique [0002] The decorative board is a thermosetting laminate made of a variety of special papers impregnated with modified melamine resin and phenolic resin, and laminated at high temperature and high pressure. It occupies a certain proportion in the decorative material market. Formaldehyde resin for impregnation is a colorless first-stage resin aqueous solution formed by polycondensation of melamine and formaldehyde under the action of a catalyst, which can form a water-resistant, heat-resistant, wear-resistant, pollution-resistant, and lustrous resin protective film. Melamine formaldehyde resin is a thermosetting resin, a polymer compound with a cross-linked network, and has good mechanical properties, electrical properties and adhesion. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B29/02B32B29/00B32B9/00B32B9/06B32B13/08B32B13/14B32B7/12B32B33/00D21H17/48D21H17/51C08G12/40E04F13/072E04F13/075
CPCB32B5/02B32B5/022B32B7/12B32B9/00B32B9/06B32B13/08B32B13/14B32B29/005B32B29/02B32B33/00B32B2260/021B32B2260/028B32B2260/046B32B2262/106B32B2307/3065B32B2307/558B32B2307/5825B32B2451/00C08G12/40D21H17/48D21H17/51E04F13/08E04F13/0875E04F2290/044E04F2290/045
Inventor 沈达何伟
Owner 江苏博大新材料科技股份有限公司