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Manufacturing method of highly corrosion-resistant/mildew-proof bamboo scrimber

A technology of bamboo recombined wood and manufacturing methods, applied in the direction of manufacturing tools, pretreatment of molding materials, flat products, etc., can solve the problems of short protection period, increased permeability, infection, etc., to improve anti-mildew and anti-corrosion performance, strengthen adhesion Synergistic effect, strong operability effect

Active Publication Date: 2022-07-29
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with wood, bamboo has a high content of nutrients such as starch and soluble sugar, and it is prone to mildew and decay during use, resulting in black, brown and other pigment infections on the surface, which affects the appearance and use value, and mildew will also lead to a decrease in toughness and increase permeability to accelerate decay
[0003] The current anti-mildew protection mostly uses chemically synthesized anti-corrosion / fungal agents, impregnating the base unit or directly coating the surface of the finished product. However, the surface protective coating is prone to exposure to paint in the outdoor environment of alternating cold, hot, dry and wet, resulting in a short effective protection period

Method used

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  • Manufacturing method of highly corrosion-resistant/mildew-proof bamboo scrimber
  • Manufacturing method of highly corrosion-resistant/mildew-proof bamboo scrimber
  • Manufacturing method of highly corrosion-resistant/mildew-proof bamboo scrimber

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Experimental program
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Effect test

Embodiment 1

[0037] The manufacturing method of the strong anti-corrosion / mildew-proof bamboo reconstituted material of the present embodiment comprises the following steps:

[0038] S1. Pretreatment of loosening bamboo bundles: drying the loosening bamboo bundles at a temperature of 50°C to a moisture content of 8%, heating the alkylnaphthalene type heat-conducting oil to 180°C, adding No. Bamboo bundles were dipped in it for 2min, taken out and drained immediately, to obtain pretreated post-removal bamboo bundles; the addition of described No. 10 pitch was 5% of the heat-conducting oil weight;

[0039] Under the action of high temperature, the pretreated bamboo bundles will decompose and destroy nutrients, reduce hydrophilic groups, increase dimensional stability (cold-heat expansion and dry-wet deformation), and the surface layer penetrates strong anti-corrosion components of asphalt;

[0040] S2. Cold-pressed molding: grind No. 10 block asphalt at a temperature of 9°C, then add polyphe...

Embodiment 2

[0050] The manufacturing method of the strong anti-corrosion / mildew-proof bamboo reconstituted material of the present embodiment comprises the following steps:

[0051] S1. Pretreatment of loosening bamboo bundles: drying the loosening bamboo bundles at a temperature of 60°C to a moisture content of 12%, heating the alkylnaphthalene type heat-conducting oil to 160°C, adding No. 10 pitch, and drying the dried bamboo bundles Bamboo bundles were dipped in it for 8min, taken out and drained immediately, to obtain pretreated post-removal bamboo bundles; the addition of described No. 10 pitch was 10% of the heat transfer oil weight;

[0052] S2. Cold pressing: Grind No. 10 block asphalt to a powder with a particle size of less than 2 mm at a temperature of 8 °C, then add polyphenol antioxidant 1010 and mix evenly to obtain asphalt mixed powder; Adding bamboo fiber scraps with a length of 0.5 mm to 4 mm into the asphalt mixture powder, and mixing evenly to obtain a mixture of asphal...

Embodiment 3

[0060] The manufacturing method of the strong anti-corrosion / mildew-proof bamboo reconstituted material of the present embodiment comprises the following steps:

[0061] S1. Pretreatment of loosened bamboo bundles: drying the loosened bamboo bundles at a temperature of 80° C. to a moisture content of 10%, heating the cooked tung oil to 200° C., adding No. 10 pitch, and dipping the dried loosened bamboo bundles in Wherein 6min, take out and drain immediately, obtain the pretreatment post-relief bamboo bundle; The addition of described No. 10 pitch is 8% of the weight of the heat-conducting oil;

[0062] S2. Cold pressing: Grind No. 10 block asphalt to a powder with a particle size of less than 2 mm at a temperature of 6 °C, then add polyphenol antioxidant 1076 and mix evenly to obtain asphalt mixed powder; Add bamboo fiber scraps with a length of 0.5 mm to 4 mm into the asphalt mixture powder, and mix them evenly to obtain an asphalt bamboo fiber mixture; the addition amount of...

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Abstract

The invention discloses a high-corrosion-resistance / mildew-proof bamboo scrimber manufacturing method which comprises the steps that dried defibered bamboo bundles are soaked in heat conduction oil in which asphalt is dissolved, and the defibered bamboo bundles are taken out and drained to obtain pretreated defibered bamboo bundles; mixing the asphalt powder with an antioxidant, adding the crushed bamboo fiber, and uniformly mixing to obtain an asphalt and bamboo fiber mixture; alternately paving a mixture of pretreated defibered bamboo bundles and asphalt bamboo fibers in a cold pressing mold, pressing to a preset thickness according to the length and width size of the mold and the target density of the plate blank, and fixing by using an iron plate and a screw to obtain a bamboo recombined square timber plate blank; and the cold pressing die bearing the bamboo recombined square timber plate blank is placed on a sample frame, heating, cooling, leveling, permeating and gluing treatment is carried out, the sample frame rotates regularly during the period, unloading is carried out after 5-10 times of circulation, finally, surface treatment is carried out, and the high-corrosion-resistance / mildew-proof bamboo recombined timber is obtained. The prepared bamboo scrimber has the advantages of being high in hydrophobicity, high in corrosion resistance / mildew resistance, resistant to loss of functional components and the like, and is suitable for outdoor garden landscape engineering.

Description

technical field [0001] The invention belongs to the technical field of bamboo-wood composite materials, and in particular relates to a manufacturing method of a strong corrosion-resistant / mildew-resistant bamboo reconstituted material. Background technique [0002] The development of bamboo products has gone through common bamboo flooring, bamboo plywood, bamboo glulam, bamboo particle board, bamboo fiberboard to the current bamboo reconstituted timber. Bamboo reconstituted timber is made of loosened bamboo as a structural unit, and is recombined by resin impregnation under high pressure. It has high density and high physical and mechanical strength. It has broken through indoors and has been used in outdoor ground paving, structural beams and columns, garden landscape engineering and outdoor construction. It has become the leading product in the bamboo wood-based panel industry. Compared with wood, the content of starch, soluble sugar and other nutrients in bamboo is high,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L11/08B27N1/02B27N3/04B27N3/18
CPCB27L11/08B27N1/0209B27N3/04B27N3/18
Inventor 于海霞张文福张建杨伟明王进唐荣强
Owner ZHEJIANG FORESTRY ACAD
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