Durable wood-bamboo cellulose composite material

A bamboo cellulose and composite material technology, which is applied to wood processing appliances, household components, flat products, etc., can solve the problems of wood bamboo fiber or plant fiber being easy to grow fungi and high price, and achieve long service life and shock resistance. Strong, low-emission effect

Active Publication Date: 2012-09-19
NINGBO ZHONGJIA LOW CARBON NEW TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to solve the above-mentioned technical problems that the price of wood-plastic composite materials is too high and the current wood-bamboo fibe

Method used

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  • Durable wood-bamboo cellulose composite material
  • Durable wood-bamboo cellulose composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] The material is 9 mm thick low-density wood fiberboard (density 350kg / m 3 Around), using low molecular weight modified phenolic resin and additives treatment method. Phenolic resin has a molecular weight of 200, a viscosity of 100-250cps at 25°C, a solid resin content of 50%-60%, and is modified by diphenylmethane diisocyanate (MDI) (application amount 3%) to increase water resistance; the auxiliary is borax , Boric acid, potassium borate and sodium carbonate, the ratio (weight) can be 1: 1: 1: 2, and the amount can be up to 5% of the resin weight to reduce the osmotic pressure of the wood and increase the pH value of the product surface. The dipping method can be used to treat the wood fiber board in the modified phenolic resin glue for 5 minutes, or the modified phenolic resin glue can be directly applied to the wood fiber board to replace the traditional vacuum-pressurization treatment. After sizing, the average phenolic solid resin content of the wo...

Example Embodiment

[0025] Example 2

[0026] The difference from Example 1 is that the three-layer or five-layer wood fiber board assembly is heated and pressed by microwave (or radio frequency), the pressing pressure is 1.5-2.0 MPa, the pressing temperature is 90-105 degrees, and the pressing time is about 5-10 minutes, the pH value of the product surface is between 10 and 12. The product has good durability against corrosion, no anti-corrosion treatment is required, and it is sufficient for outdoor use.

Example Embodiment

[0027] Example 3

[0028] The material is a low-density plant fiber sheet made of 9mm thick diphenylmethane diisocyanate MDI (density 350 kg / m 3 Left and right), the others are the same as in Example 1. Treat the plant fiber board with modified phenolic resin for 5-30 minutes. You can also directly roll-coat the modified phenolic resin glue to replace the traditional vacuum-pressurization treatment. After sizing, the plant fiber board with a thickness of 9 mm can be averaged The phenolic solid resin content reaches 12%. After the above treatment, the three-layer or five-layer plant fiber board assembly blank is hot-pressed, the hot-pressing pressure is 1.5-3.0 MPa, the hot-pressing temperature is 145-155C°, the hot-pressing time is about 8-20 minutes, and the pH value of the product surface is 10 And 12. The product has good durability against corrosion, no anti-corrosion treatment is required, and it is sufficient for outdoor use.

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Abstract

The invention relates to the field of manufacturing of high-performance durable artificial plate products without using an antiseptic or a fungicide and the field of manufacturing of artificial plate products, in particular to a durable wood-bamboo cellulose composite material. The durable wood-bamboo cellulose composite material is formed by applying high alkalinity modified phenolic resin glue and an assistant by a wood-bamboo fiber or plant fiber, and then hot-pressing. The durable wood-bamboo cellulose composite material, provided by the invention, has the advantages of low carbon, green and environmental friendliness, constructed outdoor and indoor landscape engineering, decoration engineering and buildings have the advantages that the wood texture is natural, kind, thermally-insulated, strong in shock resistance and the like, the service life is long, and the emission of greenhouse gas is greatly reduced, so that a comprehensive effect of energy saving and consumption reduction can be realized.

Description

Technical field [0001] The present invention involves high -performance durable human -manufacturing product manufacturing fields that do not use preservatives or fungicides, especially a composite material for durable wood and bamboo cellulose. Background technique [0002] In order to cope with global climate change, the Chinese government promised that by 2020, the unit's domestic production value carbon dioxide emissions should decrease 40-45%compared with 2005.To this end, China's industrial structure will realize large -scale adjustments, elimination and restrictions on high -energy and high pollution industries, and will vigorously support environmental protection industries and low -carbon new technologies. [0003] Building materials cannot be separated in various social activities and life, and China is the largest production and consumer in the world. Chinese cement, flat glass, sanitary ceramics, stone, wall materials and flooringThe world is first.The current develop...

Claims

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Application Information

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IPC IPC(8): B27N3/08B27N3/04
Inventor 王建和葛诗健许武雄
Owner NINGBO ZHONGJIA LOW CARBON NEW TECH RES INST
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