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An environmentally friendly flame-retardant adhesive-free particle board for crop straw and preparation method thereof

A crop straw and particle board technology, which is applied to flat products, other household utensils, wood processing appliances, etc., can solve the problems that hinder the popularization and application of interior decoration materials, lack of strong adhesion of synthetic resin, and no flame retardant effect. Achieve low price, strong resistance and killing effect, and improve the effect of bonding strength

Active Publication Date: 2020-08-14
NANJING HEADWAY FURNITURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of strong cohesion of adhesives such as synthetic resins, the non-adhesive wood-based panels made of crop straws often have low strength and poor dimensional stability, which cannot meet market demand; The flame retardant effect of the synthetic resin adhesive itself, the crop straw glue-free wood-based panels are almost all made of flammable biomass raw materials, and the fire resistance is poor. Promotion and application of

Method used

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  • An environmentally friendly flame-retardant adhesive-free particle board for crop straw and preparation method thereof
  • An environmentally friendly flame-retardant adhesive-free particle board for crop straw and preparation method thereof
  • An environmentally friendly flame-retardant adhesive-free particle board for crop straw and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The crop straw environment-friendly flame-retardant adhesive-free particle board of this embodiment is prepared by the following method:

[0043] 1) Take dried wheat straw and crush it to below 3.0mm and sieve it to obtain coarse wheat straw with a particle diameter of 0.5-3.0mm and fine wheat straw with a particle diameter below 0.5mm; the fine wheat straw accounts for 20% of the total weight of the crushed wheat straw , the balance is wheat straw coarse material;

[0044] Take the dried sorghum stalks and crush them to less than 3.0 mm and sieve them to obtain coarse sorghum material with a particle size of 0.5-3.0 mm and fine sorghum material with a particle size of less than 0.5 mm; the fine sorghum material accounts for 20% of the total weight of the crushed sorghum stalk , and the balance is sorghum coarse material;

[0045] 2) After mixing nano-calcium carbonate, nano-zinc oxide and nano-copper oxide according to the mass ratio of 2.5:0.3:0.2, add them to the si...

Embodiment 2

[0053] The crop straw environment-friendly flame-retardant adhesive-free particle board of this embodiment is prepared by the following method:

[0054] 1) Take the dried wheat straw and grind it below 3.0 mm and sieve it to obtain coarse wheat straw with a particle diameter of 0.5-3.0 mm and fine wheat straw with a particle diameter below 0.5 mm; the fine wheat straw accounts for 23% of the total weight of the crushed wheat straw , the balance is wheat straw coarse material;

[0055] Take dried sorghum stalks and crush them to less than 3.0 mm and sieve them to obtain coarse sorghum materials with a particle size of 0.5-3.0 mm and fine sorghum materials with a particle size of less than 0.5 mm; fine sorghum materials account for 23% of the total weight of the crushed sorghum stalks , and the balance is sorghum coarse material;

[0056] 2) After mixing nano-calcium carbonate, nano-zinc oxide and nano-copper oxide according to the mass ratio of 2.5:0.35:0.15, add them to the s...

Embodiment 3

[0064] The crop straw environment-friendly flame-retardant adhesive-free particle board of this embodiment is prepared by the following method:

[0065] 1) Take dried wheat straw and crush it to below 3.0mm and sieve it to obtain coarse wheat straw with a particle diameter of 0.5-3.0mm and fine wheat straw with a particle diameter below 0.5mm; the fine wheat straw accounts for 25% of the total weight of the crushed wheat straw , the balance is wheat straw coarse material;

[0066] Take dried sorghum stalks and crush them to less than 3.0 mm and sieve them to obtain coarse sorghum material with a particle size of 0.5-3.0 mm and fine sorghum material with a particle size of less than 0.5 mm; the fine sorghum material accounts for 25% of the total weight of the crushed sorghum stalk material , and the balance is sorghum coarse material;

[0067] 2) After mixing nano-calcium carbonate, nano-zinc oxide and nano-copper oxide according to the mass ratio of 2.5:0.4:0.1, add them to t...

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Abstract

The invention relates to an environment-friendly flame-retardant no-adhesive crushing board and a manufacturing method thereof. The crushing board is manufactured by the following method: 1) preparingwheat straw coarse aggregates, preparing wheat straw fine aggregates, sorghum coarse aggregates and sorghum fine aggregates; 2) mixing nano calcium carbonate, nano zinc oxide and nano copper oxide, and modifying to obtain a modifying additive A; mixing nano zinc borate, nano zinc oxide and nano copper oxide, and modifying to obtain a modifying additive B; 3) mixing the wheat straw coarse aggregates, the sorghum coarse aggregates and the modifying additive A to obtain a coarse mixture; mixing the wheat straw fine aggregates, the sorghum fine aggregates and the modifying additive B to obtain afine mixture; and 4) taking the coarse mixture as a core layer and taking the fine mixture as a surface layer to perform spreading, pre-pressing, steam-injecting, hot-pressing and cooling balance. Theobtained no-adhesive crushing board is free of formaldehyde release, has good mechanical property, water and moisture resistance, and anti-corrosion anti-bacterial property, is good in fireproof andflame-resistant effect, and is suitable for being popularized and used.

Description

technical field [0001] The invention belongs to the technical field of straw particle boards, and in particular relates to an environmentally friendly, flame-retardant, glue-free particle board for crop straws and a preparation method thereof. Background technique [0002] my country is a large agricultural country with abundant crop straw resources. Straw is the general term for the stems and leaves (ears) of mature crops. It usually refers to the remaining parts of wheat, rice, corn, sorghum, potatoes, oilseeds, cotton, sugarcane and other crops after harvesting seeds. It is a low-cost, multi-purpose of renewable biological resources. The main chemical composition content of crop straw (cellulose, hemicellulose and lignin) is similar to that of wood, and can be used to replace wood to make wood-based panels; according to statistics, every two mu of farmland straw is equivalent to one mu of forest land for a year The amount of wood growth. Using crop straws in the wood-b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/02B27N3/10B27N3/18C08L97/02C08K9/06C08K3/26C08K3/22
CPCB27N3/02B27N3/10B27N3/18C08K2003/2248C08K2003/2296C08K2003/265C08K2201/011C08L97/02C08L2205/025C08K9/06C08K3/26C08K3/22
Inventor 李建州
Owner NANJING HEADWAY FURNITURE CO LTD
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