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Poplar veneer veneering sound insulation composite board and preparation method thereof

A technology of poplar veneer and composite board, which is applied in the jointing of wooden veneers, wood layered products, wood processing appliances, etc., which can solve the problem that the sound insulation effect and fireproof performance cannot meet the requirements, the fiber structure of poplar wood is loose, and the material Poor problems, to achieve the effect of blocking oxygen and sound wave transmission, reducing porosity, improving fire resistance and sound insulation

Active Publication Date: 2020-03-24
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the loose structure of poplar fiber, relatively poor material, and flammability, its sound insulation effect and fire resistance when used to prepare composite panels cannot meet the needs

Method used

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  • Poplar veneer veneering sound insulation composite board and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The present invention also provides a preparation method of poplar veneer veneer sound-insulating composite board, comprising the following steps:

[0035] After mixing the inorganic adhesive, wood fiber and water, the wood fiber inorganic slurry is obtained;

[0036] Immersing the polyurethane soft foam board in the wood fiber inorganic slurry and extruding repeatedly, then performing cold pressing treatment to obtain the polyurethane soft foam layer;

[0037] The poplar veneer layer is bonded to both sides of the polyurethane soft foam layer, and heat-pressing is performed to obtain the poplar veneer veneer sound-insulating composite board.

[0038] The invention mixes the inorganic adhesive, wood fiber and water to obtain the wood fiber inorganic pulp.

[0039] The present invention does not have any special limitation on the mixing method, and a mixing method well known to those skilled in the art can be used; in the present invention, the mixing is preferably perf...

Embodiment 1

[0058] 1) Mix and stir the inorganic adhesive with 60-mesh wood fiber and water to prepare a wood fiber inorganic slurry with a viscosity of 300 MPa·s, and the weight ratio of the inorganic adhesive to the wood fiber is 50:50.

[0059] 2) Immerse the polyurethane soft foam board in the wood fiber inorganic slurry and squeeze it repeatedly, so that the wood fiber inorganic slurry is fully infiltrated into the interior, then remove the polyurethane soft foam board and dry it in open water, and send it into a Cold pressing with a cold press for 20 seconds, taking out and curing for 12 days to obtain a soft polyurethane foam layer.

[0060] 3) Mix the E0 grade urea-formaldehyde resin glue for plywood with 100 mesh calcium carbonate powder according to the weight ratio of 100:10 to prepare the glue solution; apply the glue solution on one surface of a 5mm sawn poplar board through a single-side glue coating machine, and apply Covering amount is 250g / m 2 ;According to the sandwich ...

Embodiment 2

[0068] 1) Mix and stir the inorganic adhesive with 70-mesh wood fiber and water to prepare a wood fiber inorganic slurry with a viscosity of 270 MPa·s, and the weight ratio of inorganic adhesive to wood fiber is 55:45.

[0069] 2) Immerse the polyurethane soft foam board in the wood fiber inorganic slurry and squeeze it repeatedly, so that the wood fiber inorganic slurry is fully infiltrated into the interior, then remove the polyurethane soft foam board and dry it in open water, and send it into a vacuum chamber with a pressure of 0.6MPa Cold pressing with a cold press for 25 seconds, taking out and curing for 14 days to obtain a soft polyurethane foam layer.

[0070] 3) Mix E0 grade urea-formaldehyde resin glue for plywood and 150 mesh calcium carbonate powder according to the weight ratio of 100:12 to prepare glue. Apply the glue solution on one surface of 5mm sawn poplar board with a single-sided glue applicator, and the coating amount is 280g / m 2 ;According to the sandwi...

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Abstract

The invention provides a poplar veneer veneering sound insulation composite board and a preparation method thereof, and belongs to the technical field of composite boards, the poplar veneer veneeringsound insulation composite board provided by the invention comprises a polyurethane flexible foam layer and poplar veneer layers bonded on two sides of the polyurethane flexible foam layer, the base body of the polyurethane flexible foam layer is a polyurethane flexible foam board, and the polyurethane flexible foam board is a polyurethane foam board. Wood fibers and an inorganic adhesive are dipped in the polyurethane flexible foam board; the wood fibers and the inorganic adhesive are dipped in the polyurethane flexible foam board, so that the fire resistance and the sound insulation effect of the composite board are improved.

Description

technical field [0001] The invention belongs to the field of composite boards, in particular to a poplar veneer veneer sound-insulating composite board and a preparation method thereof. Background technique [0002] Wood-inorganic composite materials are prepared from organic wood materials and inorganic gelling components through a certain composite process. They have dual characteristics of organic / inorganic and can be widely used in furniture, door panels, indoor and outdoor decoration, wall materials and other fields. However, the wood-inorganic composite material is dense and has poor sound insulation effect, which affects its application effect. In order to reduce the cost, by introducing a porous structure into the wood-inorganic composite board, the weight of the board can be reduced, and the use of wood raw materials can be reduced. At the same time, the porous structure can also improve the sound absorption performance of the board. [0003] Poplar, as a fast-grow...

Claims

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Application Information

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IPC IPC(8): B32B21/08B32B27/40B32B7/12B27D1/00B32B37/10B32B37/06B32B37/12B32B21/14B32B33/00
CPCB27D1/00B32B7/12B32B21/047B32B21/14B32B27/40B32B33/00B32B37/06B32B37/10B32B37/12B32B2260/026B32B2266/0278B32B2307/102B32B2307/3065B32B2307/7244
Inventor 郑霞肖蛟李新功吴义强陈东山
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY