Flame-retardance formaldehyde-free industrial hemp straw fiberboard and manufacturing method thereof

A technology of industrial hemp and straw fiber, which is applied in the manufacture of tools, flat products, and other household appliances. It can solve the problems of inability to change the material density and flame-retardant grade, and cannot achieve bonding, so as to facilitate mechanized large-scale production and facilitate operation, high density effect

Inactive Publication Date: 2017-11-07
洪家敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Polyvinyl alcohol can only become a slurry-like viscous liquid by adding water and heating it. Simple mixing will react to solidify and cannot play the role of bonding;
[0008] 2. The composite board is a bond between the inorganic interface and the wood material, and the density and flame retardant grade of the material cannot be changed by changing the formula amount of the adhesive

Method used

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  • Flame-retardance formaldehyde-free industrial hemp straw fiberboard and manufacturing method thereof
  • Flame-retardance formaldehyde-free industrial hemp straw fiberboard and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A flame-retardant formaldehyde-free industrial hemp straw fiberboard, raw materials include industrial hemp straw whole stalk core scraps and a flame-retardant adhesive accounting for 18% by weight of the scraps; the flame-retardant adhesive consists of A component, B component Composition with C component, each component raw material comprises by weight:

[0048] Component A: 16 parts of magnesium chloride, 3.4 parts of polyvinyl alcohol and 100 parts of water;

[0049] Component B: 20 ​​parts of magnesium chloride, 80 parts of magnesium sulfate, 100 parts of water;

[0050] Component C: 7 parts of magnesium oxide.

Embodiment 2

[0052] A flame-retardant formaldehyde-free industrial hemp straw fiberboard, raw materials include industrial hemp straw whole stalk core scraps and a flame-retardant adhesive accounting for 48% by weight of the scraps; the flame-retardant adhesive consists of A component, B component Composition with C component, each component raw material comprises by weight:

[0053] Component A: 14 parts of magnesium chloride, 2.4 parts of polyvinyl alcohol and 100 parts of water;

[0054] Component B: 12 ​​parts of magnesium chloride, 50 parts of magnesium sulfate, 100 parts of water;

[0055] Component C: 5 parts of magnesium oxide.

[0056] The whole stalk core scrap of industrial hemp straw is divided into granular material and fibrous scrap. The industrial hemp straw fiber board has a three-layer structure, which is sequentially a granular material layer, a fibrous scrap layer and a granular material layer.

Embodiment 3

[0058] A flame-retardant formaldehyde-free industrial hemp straw fiberboard, raw materials include industrial hemp straw whole stalk core scraps and a flame-retardant adhesive accounting for 20% by weight of the scraps; the flame-retardant adhesive consists of A component, B component Composition with C component, each component raw material comprises by weight:

[0059] Component A: 15 parts of magnesium chloride, 3 parts of polyvinyl alcohol and 100 parts of water;

[0060] Component B: 15 parts of magnesium chloride, 60 parts of magnesium sulfate, 100 parts of water;

[0061] Component C: 6 parts of magnesium oxide.

[0062] The whole stalk core scrap of industrial hemp straw is divided into granular material and fibrous scrap. The industrial hemp straw fiber board has a three-layer structure, which is sequentially a granular material layer, a fibrous scrap layer and a granular material layer.

[0063] The granular material accounts for 30% of the weight ratio of the crus...

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Abstract

The invention provides a flame-retardance formaldehyde-free industrial hemp straw fiberboard. The fiberboard comprises raw materials of industrial hemp straw all-straw core fragments and flame-retardance adhesive being 18-48 weight% of the fragments; and the fiberboard is prepared by such steps as cold pressing and curing. Aiming at a hot pressing process and a method for applying solvent adhesive in traditional fiberboard manufacturing, the flame-retardance formaldehyde-free industrial hemp straw fiberboard is prepared by using a cold pressing process and special flame-retardance formaldehyde-free adhesive. Compared with a traditional fiberboard preparation method, the method has the advantages of simple process, low energy consumption and no environmental pollution; and compared a wood fiberboard, the obtained product has such characteristics as flame retardance, low smoke, no irritation, no poison, no formaldehyde, bacteria resistance, insect resistance, water resistance, high strength and possession of both medium density and high density.

Description

technical field [0001] The invention belongs to the technical field of wood-based panel manufacturing, and in particular relates to a flame-retardant formaldehyde-free fiberboard using industrial hemp stalks as a main raw material and a manufacturing method thereof. Background technique [0002] Hemp (Cannabis sativa L.) is commonly known as hemp, hemp, cold hemp, flower hemp, thread hemp, etc. in China. It is mainly planted in subtropical and temperate regions of Asia, Europe and North America. Strong reversibility, wide adaptability, thick plant height, stalk height up to 4 meters, stalk thickness more than 2 cm, can produce 2 to 2.5 tons of straw per mu (2000 kg to 2500 kg). For a long time, hemp plant skin fiber has been a high-grade raw material in the textile field, and the seed kernel has been used in food, edible oil, health care products, pharmaceuticals, and cosmetics. "Industrial hemp" is stipulated in the "United Nations Convention against Illicit Trafficking in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N1/02B27N3/02
CPCB27N1/0209B27N3/02
Inventor 洪家敏姜泽兵
Owner 洪家敏
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