Straw composite plate and preparation method thereof

A composite board and straw technology, which is applied in the field of composite board and its preparation, can solve the problems of easy loosening of screws and poor nail holding power, and achieve the effects of good nail holding power, cost saving and promising prospects

Inactive Publication Date: 2019-05-21
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 4. The nail holding power is poor, and the screws are easy to loosen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A straw composite board, the composition and content (percentage by weight, the same below) are: crop straw 55%; weed straw 15%; fungus chaff 10%; landscaping discarded branches 9%; sawdust 8%; dihydrogen phosphate Ammonium 0.1%; Polyvinyl acetate 1.5%; Polyvinyl alcohol 1%; Magnesium chloride 0.4%.

[0026] A straw composite board can be prepared as follows:

[0027] 1. Raw material crushing

[0028] All raw materials are crushed into fibrous shapes with uniform size, the length of straw and branches is 5 cm, and the fungus chaff sawdust is passed through a 5-mesh sieve as filling material for later use.

[0029] 2. Mixing material

[0030] After drying and crushing straw and other materials, weigh 55% of crop straw, 15% of weed straw, 10% of fungus chaff, 9% of garden discarded branches, and 8% of sawdust into the mixer for stirring , the water content is controlled at 12%. After mixing the mixture in the mixer well, mix it with 0.1% ammonium dihydrogen phosphate, ...

Embodiment 2

[0047] A straw composite board, its composition and content (weight percentage, the same below) are: 60% of crop straw; 12% of weed straw; 10% of fungus chaff; 7% of discarded branches in landscaping; 8% of sawdust; dihydrogen phosphate Ammonium 0.1%; Polyvinyl acetate 1.5%; Polyvinyl alcohol 1%; Magnesium chloride 0.4%.

[0048] A straw composite board can be prepared as follows:

[0049] 1. Raw material crushing

[0050] All raw materials are crushed into fibrous shapes with uniform size, the length of straw and branches is 5 cm, and the fungus chaff sawdust is passed through a 5-mesh sieve as filling material for later use.

[0051] 2. Mixing material

[0052] After drying and crushing straw and other materials, weigh 60% of crop straw, 12% of weed straw, 10% of fungus chaff, 7% of garden discarded branches, and 8% of sawdust into the mixer for stirring , the water content is controlled at 12%. After mixing the mixture in the mixer well, mix it with 0.1% ammonium dihydro...

Embodiment 3

[0069] A straw composite board, its composition and content (weight percentage, the same below) are: 60% of crop straw; 15% of weed straw; 10% of fungus chaff; 7% of discarded branches in landscaping; 6% of sawdust; Ammonium 0.1%; Polyvinyl acetate 0.5%; Polyvinyl alcohol 1%; Magnesium chloride 0.4%.

[0070] A straw composite board can be prepared as follows:

[0071] 1. Raw material crushing

[0072] All raw materials are crushed into fibrous shapes with uniform size, the length of straw and branches is 5 cm, and the fungus chaff sawdust is passed through a 5-mesh sieve as filling material for later use.

[0073] 2. Mixing material

[0074] After drying and crushing straw and other materials, weigh 60% of crop straw, 15% of weed straw, 10% of fungus chaff, 7% of garden discarded branches, and 6% of sawdust into the mixer for stirring , the water content is controlled at 12%. After mixing the mixture in the mixer well, mix it with 0.1% ammonium dihydrogen phosphate, 0.5% p...

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Abstract

The invention relates to a straw composite plate and a preparation method thereof. The straw composite plate is prepared from the following raw materials in percentage by weight: 55 to 60 percent of crop straw, 10 to 15 percent of weed straw, 7 to 10 percent of mushroom bran, 7 to 9 percent of landscaping discarded branches, 6 to 8 percent of wood dust, 0.1 percent of ammonium dihydrogen phosphate, 0.5 to 1.5 percent of polyvinyl acetate, 1 percent of polyvinyl alcohol and 0.4 percent of magnesium chloride. The preparation method comprises the following processes: crushing the raw materials; stirring the raw materials; preheating a mould; paving the raw materials; spraying adhesive; performing hot pressing; demoulding; processing a plate blank; pressing a film; attaching a film or sprayingpaint. According to the straw composite plate and the preparation method thereof, the mushroom bran, the branches and the like are added into the straw for preparing the straw composite plate for thefirst. Meanwhile, a flame retardant and a moisture proof agent are added into auxiliary materials. The polyvinyl alcohol is added into the raw materials, so that the composite plate has the advantageof water resistance and moisture resistance; the flame retardant is added, so that molecular oxygen in the composite plate is locked, so that the purpose of retarding flame is achieved; a cross-linking agent is added, so that the materials are closer; the composite plate does not deform easily, and the nail holding force is good.

Description

technical field [0001] The invention relates to a composite board and a preparation method thereof, in particular to a straw composite board and a preparation method thereof. Background technique [0002] Medium- and high-density straw fiberboards are non-wood-based panels, which are made of fiber units by gluing or compounding. It is characterized by large format, good structure, easy construction, low expansion and contraction rate, relatively stable size, uniform material than wood, not easy to deform and crack, light weight, heat preservation, heat insulation, suitable for sawing, planing, nailing, cutting and molding system, low production cost, low price, etc. At present, it has been widely used in building materials, decoration, furniture, packaging and flooring. [0003] However, medium and high-density straw fiberboards still have the following defects: [0004] 1. Choose a single type of straw; [0005] 2. Not waterproof; [0006] 3. No flame retardant, even t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L31/04C08L29/04C08K3/16C08K3/32B27N1/00B27N1/02B27N3/00B27N3/04B27N3/08B27N3/18B27N7/00
Inventor 巫琪杨绍斌罗家全廖倩文吕静波
Owner SHENYANG UNIV
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