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Composite material laminated board and preparation method thereof

A technology of composite material layer and composite substrate, which is applied in the field of building decoration materials, can solve problems such as inability to directly bond with thermosetting resins, and achieve the effect of long service life

Inactive Publication Date: 2020-09-11
丁中建
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem through the following technical solutions: a composite material laminate, comprising impregnated paper impregnated with a thermosetting resin on the upper layer, an interposer sheet in the middle and a substrate on the lower layer, the interposer sheet and the substrate It has a PUR hot-melt adhesive layer, and there is a solidified thermosetting resin layer mixed with the intermediary layer and the impregnated paper fiber between the impregnated paper and the interlayer sheet. The intermediary layer sheet can be respectively covered with PUR hot-melt adhesive and A fiber sheet in which thermosetting resin penetrates from both sides of the interposer sheet, and the substrate is a sheet-like plate whose surface cannot be directly bonded to the thermosetting resin

Method used

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  • Composite material laminated board and preparation method thereof
  • Composite material laminated board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The composite laminate structure of the present embodiment is as figure 1 As shown, the impregnated paper layer 1 comprising the cured melamine formaldehyde resin impregnated on the upper layer, and the intermediate layer sheet 2 located in the middle have a gram paper weight of 20-40g / m 2 The base paper and the substrate 3 located in the lower layer are SPC sheets (boards extruded with PVC resin as the base material and calcium carbonate as filler). The sizing amount of impregnated paper impregnated with melamine formaldehyde resin is more than 130%, and the volatile matter is more than 6.0%. PVC resin in SPC substrate: calcium carbonate (weight ratio) is 1:3. There is a PUR hot-melt adhesive layer between the interposer sheet and the substrate. The interposer sheet is a fiber that can be penetrated and wetted by molten PUR hot-melt adhesive and thermosetting resin. The thermosetting resin 4 is penetrated and cured near the impregnated paper layer. The substrate laye...

Embodiment 2

[0027] The structure and preparation method of this embodiment are the same as those of the first embodiment, except that the substrate material can be replaced by a substrate WPC which is a mixture of PVC and wood flour in different proportions. Inorganic gel materials (such as silicate, gypsum, etc.) can also be used as substrates, and substrates made of other fillers (which can be wood fibers) are added. This kind of substrate has good heat resistance. In the second step, the low-pressure short-cycle lamination method can be used, that is, the lamination can be realized within 1 minute of the hot-pressing temperature at a hot-pressing temperature of 160-190°C. The laminate produced was of the same quality as Example 1.

Embodiment 3

[0029] The structure and preparation method of this embodiment are the same as those of Embodiment 1, except that the interlayer sheet material used is made of wood fiber, plant fiber or glass fiber, etc., which can be infiltrated and compatible with PUR hot melt adhesive and thermosetting resin respectively. The material is prepared as a thin sheet with a thickness of less than 2 mm. Such as other types of paper, wood veneer, glass fiber cloth, etc.

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Abstract

The invention relates to a composite material laminated board and a preparation method thereof, and belongs to the technical field of building decoration materials. The structure comprises impregnatedpaper positioned on the upper layer, an intermediate layer sheet positioned in the middle and a substrate positioned on the lower layer, wherein a PUR hot melt adhesive layer is arranged between theintermediate layer sheet and the base plate, the impregnated paper is decorative paper impregnated by thermosetting resin, the intermediate layer sheet is a fiber sheet which can be respectively permeated by the thermosetting resin and PUR hot melt adhesive, and the base plate is a sheet-shaped plate of which the surface cannot be directly bonded with the thermosetting resin. According to the invention, fibers of the intermediate layer are used as a medium to form two cured layers which are respectively bonded with two materials which cannot be bonded with each other. The preparation process adopts a two-step production method of firstly preparing the composite substrate of the intermediate layer thin plate and the substrate, and then carrying out hot-pressing compounding on the compositesubstrate and gum dipping to form the composite laminated board. Therefore, the obtained composite laminated board has the advantages of boiling resistance, water soaking resistance, heat resistance,no layering and long service life.

Description

technical field [0001] The invention relates to a composite material laminated board and a preparation method thereof, belonging to the technical field of building decoration materials. Background technique [0002] At present, the base materials of floor and wall decorative panels are mainly wood or wood-based panels, but their water resistance is poor, and wood-based panels also release formaldehyde. PVC or PP, PE (the following are represented by PVC) and other polymers as the main material, calcium carbonate or various fibers as fillers, sheet-like boards made by extrusion molding (such as: SPC, WPC, etc.) have good water resistance while avoiding the problem of formaldehyde pollution. At present, the building decoration materials (decorative panels, floors, etc.) prepared with this base material are made of one-time compounding of the base plate and the PVC decorative film with printed patterns, but the heat resistance, surface hardness, and surface gloss of the PVC ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B29/00B32B29/06B32B27/10B32B27/20B32B27/30B32B9/00B32B9/02B32B9/06B32B21/02B32B21/06B32B21/08B32B17/02B32B17/06B32B17/10B32B7/12B32B37/06B32B37/10B32B37/12E04F13/077E04F15/10
CPCB32B5/02B32B5/18B32B7/12B32B21/02B32B21/06B32B21/08B32B27/10B32B27/12B32B27/20B32B27/304B32B29/005B32B29/007B32B29/02B32B37/06B32B37/10B32B37/1207B32B2037/1215B32B2260/028B32B2260/046B32B2262/06B32B2262/067B32B2262/101B32B2264/067B32B2264/104B32B2307/306B32B2471/00B32B2607/02B32B2266/12E04F13/0866E04F15/107
Inventor 丁中建
Owner 丁中建
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