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Composite plant fiber material capable of resisting biological violation and preparation method thereof

A plant fiber and composite material technology, applied in the field of biomass composite materials, can solve the problem of single protective function, achieve long-term protective function, and overcome the effect of uneven distribution of chemicals

Inactive Publication Date: 2013-08-14
NANJING FORESTRY UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention proposes a plant fiber composite material for preventing bioinfestation and its preparation method. The three protective agents of borate, copper compound and iodide are used in combination to exert their unique protective effects and the synergistic effect of compound use. Overcome the shortcomings of the above-mentioned existing technologies, overcome the shortcomings of a single protective agent with a single protective function, provide a more economical and effective way to realize insect-proof, anti-corrosion, anti-mildew and anti-discoloration technology, and endow composite materials with the ability to more completely resist the erosion of biological factors Ability to provide long-acting, environmentally friendly, broad-spectrum anti-fungal and insect-resistant biomass composite materials and their preparation methods

Method used

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  • Composite plant fiber material capable of resisting biological violation and preparation method thereof
  • Composite plant fiber material capable of resisting biological violation and preparation method thereof
  • Composite plant fiber material capable of resisting biological violation and preparation method thereof

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preparation example Construction

[0026] The method for preparing composite materials bonded by thermosetting resins includes:

[0027] A) drying the plant fiber raw material unit to a moisture content of 2% to 9%;

[0028] B) Apply preservatives, adhesives and waterproofing agents to the dried plant units so that they are evenly distributed on the units to obtain blanks with glue, wax and preservatives applied. Among them, the mass ratio of adhesive, waterproofing agent and dry plant unit is (3%-15%): (0.5-1.5%): 100%; borate, copper compound and iodide three types of preservatives and composite materials The mass ratio of dry plant fiber raw materials is (0.5%-4.0%): (0.5%-4.0%): (0.1%-1.5%): 100%. The three types of preservatives are evenly mixed and applied to the unit, or Borates and copper compounds are homogeneously mixed, and iodides are applied to the unit after being homogeneously mixed with liquid glue or paraffin emulsion;

[0029] C) The above blanks are evenly paved into a slab with a single-la...

Embodiment 1

[0036] The moso bamboo is degreened and yellowed and processed into regular large pieces of shavings, and dried to a moisture content of 5%. Apply 8% urea-formaldehyde resin (with 1% hardener added) and 1% paraffin emulsion. After uniformly mixing zinc borate (0.5% of the mass of dry shavings) and copper carbonate (0.5% of the mass of dry shavings) and applying it to the shavings, uniformly mixing IPBC (0.5% of the mass of dry shavings) and adhesive The billet was obtained from the shavings, paved into a three-layer bamboo oriented strand board (OSB) slab, and pressed into a board by a hot pressing process at a temperature of 160°C-170°C, a pressure of 3.0MPa-3.5MPa, and a time of 60s / mm. At the same time, a blank control sample and a comparative test plate with zinc borate added as a preservative were prepared. According to LY / T 1580-2010 "Oriented Strand Board" test static bending strength MOR (parallel and perpendicular surface orientation direction), elastic modulus MOE (...

Embodiment 2

[0041] Cut moso bamboo into shavings with a flaking machine, dry to a moisture content of 5% to 6%, apply 8% PF resin and 1% paraffin wax emulsion, and mix zinc borate (0.8% of the mass of dry shavings) in a roller glue mixer. ), calcium borate (0.8% of the mass of dry shavings) and copper carbonate (1.0% of the mass of dry shavings) were uniformly mixed and applied to the shavings, and IPBC (0.4% of the mass of dry shavings) and adhesive were evenly mixed and applied to the The blank was obtained from the shavings, and the blank was paved into a slab, and pressed into a slab with a hot pressing temperature of 160°C, a pressure of 5.0 MPa, and a time of 80 s / min. According to the standard LY / T 1580-2010 "Oriented Strand Board", GB / T 18261- 2000 "Test Method for Controlling Wood Mold and Blue Stain Bacteria by Antifungal Agents", LY / T 1283-1998 "Toxicity Test of Wood Preservatives on Decaying Fungi" Laboratory test method" and GB / T 13942.1-2009 "Test method for natural durabili...

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Abstract

The invention relates to a composite plant fiber material capable of biological violation and a preparation method thereof. The composite plant fiber material comprises a unit formed by processing a plant fiber material, a corrosion remover and a thermosetting or thermoplastic resin, wherein the corrosion remover is composed of borate which is insoluble or poorly soluble in water, a copper compound and an iodine compound; the raw material ratio of the corrosion remover to absolutely dry plants in the composite material is (0.5% to 4.0%): (0.5% to 4.0%): (0.1% to 1.5%): 100%; the corrosion remover, the resin and an additive are simultaneously applied to the plant unit at the gluing stage; or the corrosion remover is evenly mixed with the plant unit firstly and then evenly mixed with the resin and the like. The composite material formed by gluing thermosetting resin is prepared by the following steps of: preparing the unit; applying the corrosion remover; preparing a resin adhesive blank; preparing a plate blank; performing the hot-pressing and the like. The composite material formed by gluing the thermoplastic resin is prepared by the following steps of: mixing the corrosion remover with the plant fiber / powder, thermoplastic resin plastic and a modifying agent; and performing the high-temperature extrusion molding. The composite plant fiber material provided by the invention is efficient in insect prevention, anticorrosion, mildew-proof performance and blue stain resistance.

Description

technical field [0001] The present invention relates to a bio-infestation plant fiber composite material with the ability to prevent insects, rot, mildew and discoloration, which is made of plant fibers such as wood, bamboo and agricultural residues, and processed with preservatives and resin adhesives. The invention and a preparation method thereof belong to the field of biomass composite materials. Background technique [0002] With the reduction of large-diameter high-quality timber resources worldwide, relying on plantation small-diameter timber and other non-timber plant raw materials to manufacture various biomass composite materials to meet the needs of various industries for wood products has become my country's solution to timber. An important measure of supply shortages. Biomass composite materials are boards or profiles made of wood or other plant fibers, which are processed into various units through special processes, applied with adhesives and additives, and pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L61/24C08L61/06C08L75/00C08L61/32C08L23/06C08L23/12C08L27/06C08L25/06C08K3/38C08K3/26C08K3/22C08K5/3437C08K5/41C08K5/205C08K5/06
Inventor 金菊婉覃道春王锦涛吴春贾翀徐咏兰张禄晟崔举庆韩书广吴羽飞
Owner NANJING FORESTRY UNIV
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