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Method for preparing high-strength anticorrosive plywood

A plywood, high-strength technology, used in plywood presses, bonding of wooden veneers, adhesives, etc., can solve the problems of easy water absorption and expansion, poor moisture resistance, mildew and rot, etc., to reduce the floating floor and improve the adhesion performance. , Improve the effect of moisture resistance

Inactive Publication Date: 2020-05-01
杭州德问贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main technical problem to be solved by the present invention is to provide a high-strength anti-corrosion plywood preparation method for the defects of poor moisture resistance, easy water absorption and swelling, mildew and rot, and low strength when plywood is prepared from eucalyptus wood and used as a wooden floor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of waterproof glue:

[0035] Mix cellulose viscose and liquid paraffin in a mass ratio of 5:1, place it in a film pulling machine, and pull the film at a film pulling rate of 60cm / min to obtain a film, then put EVA foam into the film with a mass fraction of 20 % lime water for 40 minutes, put it in an oven with a set temperature of 70°C, and dry it for 20 minutes to obtain a cotton-like waterproof substrate, which is coated with the above-mentioned film and then put into a molding machine Hot pressing for 20 minutes, the hot pressing temperature is controlled at 100°C, and the hot pressing pressure is 0.5 MPa to obtain waterproof glue;

[0036] Preparation of preservative wood sheets:

[0037] Saw the eucalyptus wood into panels, place the panels in a pressure impregnation tank, apply air pressure after sealing, keep the pressure of the pressure impregnation tank at 0.2MPa, last for 10min, then inject wood preservative to increase the pressure to 0.8MPa, an...

Embodiment 2

[0045] Preparation of waterproof glue:

[0046] Mix cellulose viscose and liquid paraffin at a mass ratio of 5:1, place it in a film pulling machine, and pull the film at a film pulling rate of 70cm / min to obtain a film, and then put EVA foam into the film with a mass fraction of 20 % lime water for 42.5 minutes, placed in an oven with a set temperature of 75°C, and dried for 22.5 minutes to obtain a cotton-like waterproof base material, which was coated with the above-mentioned film and put into molding Hot press in the machine for 22.5 minutes, control the hot pressing temperature to 110°C, and the hot pressing pressure to 0.55MPa to obtain waterproof glue;

[0047] Preparation of preservative wood sheets:

[0048] Saw the eucalyptus wood into panels, place the panels in a pressure impregnation tank, apply air pressure after sealing, keep the pressure of the pressure impregnation tank at 0.3MPa, and last for 12.5min, then inject wood preservative to increase the pressure to...

Embodiment 3

[0056] Preparation of waterproof glue:

[0057] Mix cellulose viscose and liquid paraffin at a mass ratio of 5:1, place it in a film pulling machine, and pull the film at a film pulling rate of 80cm / min to obtain a film, then put EVA foam into the film with a mass fraction of 20 % lime water for 45 minutes, placed in an oven with a set temperature of 80°C, and dried for 25 minutes to obtain a cotton-like waterproof substrate, which was coated with the above-mentioned film and then put into a molding machine Hot pressing for 25 minutes, the hot pressing temperature is controlled at 120°C, and the hot pressing pressure is 0.6MPa to obtain a waterproof glue;

[0058] Preparation of preservative wood sheets:

[0059] Saw the eucalyptus wood into panels, put the panels in a pressure impregnation tank, apply air pressure after sealing, keep the pressure of the pressure impregnation tank at 0.4MPa, last for 15min, then inject wood preservative to increase the pressure to 1.5MPa, and...

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Abstract

The invention belongs to the technical field of plywood preparation, and particularly relates to a method for preparing a high-strength anticorrosive plywood. The method comprises the following stepsthat cellulose viscose and liquid paraffin are mixed, and then film-drawing is carried out to obtain a glue film; a composite fiber board and an anticorrosive wood board are bonded by using waterproofglue as an intermediate layer to prepare a unit board; then the waterproof glue is used for hot pressing; and then the surface is waxed to obtain the high-strength anticorrosive plywood. According tothe method for preparing the high-strength anticorrosive plywood, a sepiolite fiber sponge board is used as the composite fiber board, so that the adhesion performance of the plywood to the ground isimproved; a plastic EVA foam is used as a base material of the waterproof glue, so that the plywood has good buffering performance; methoxy is easy to hydrolyze, and is a mineral waterproof agent, sothat the moisture resistance of the plywood is improved; the EVA foam is soaked in lime water, so that the waterproof performance is improved; the liquid paraffin and the cellulose viscose are utilized to draw the film, so that the water absorption expansion and mildew of the plywood are avoided; and in addition, calcium carbonate can be formed by calcium oxide under the environment of water andcarbon dioxide, so that the strength of the plywood is improved, and the plywood has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of plywood preparation, and in particular relates to a preparation method of high-strength anticorrosion plywood. Background technique [0002] Plywood is an important type of wood-based panels. Due to the characteristics of small deformation, large format, inconvenient construction, not easy to warp, and high tensile strength of transverse grains, plywood is widely used in furniture, carriages, shipbuilding, military industry, packaging and other industrial sectors. It has been widely used. my country's timber industry is in the process of transforming from natural forest timber to artificial forest timber. However, fast-growing timber in plantation forests is prone to decay, insects, and mildew. Therefore, timber protection will prolong the life of timber. It plays the role of reducing the waste of wood due to decay and insects, and can also improve the quality of wood products and increase the functions of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/00B27D3/00B27K3/08B27K3/20B27K3/22B27K3/36B27K3/52B29D7/01C08L53/02C08L95/00C09J101/02C09J191/06C08K7/26C08L89/00
CPCB27D1/00B27D3/00B27K3/08B27K3/20B27K3/22B27K3/36B27K3/52B27K2240/20B29D7/01C08K7/26C08L53/02C09J101/02C08L95/00C08L91/06C08L89/00
Inventor 陈倩
Owner 杭州德问贸易有限公司
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