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Environment-friendly flame-retardant non-adhesive fiberboard of crop straw and preparation method thereof

A technology of crop straw and fiberboard, which is applied in the field of straw fiberboard, can solve the problems that hinder the popularization and application of interior decoration materials, lack of strong gluing effect of synthetic resin, and no flame retardant effect, so as to achieve improved mechanical properties, low price, and improved gluing The effect of intensity

Active Publication Date: 2018-10-16
霸州市光洋人造板制造有限公司
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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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  • Environment-friendly flame-retardant non-adhesive fiberboard of crop straw and preparation method thereof
  • Environment-friendly flame-retardant non-adhesive fiberboard of crop straw and preparation method thereof
  • Environment-friendly flame-retardant non-adhesive fiberboard of crop straw and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The crop straw environmentally friendly flame-retardant glue-free fiberboard of this example is prepared by the following method:

[0047] 1) Take dry wheat straw and dry sorghum straw and cut them to a length of 20-30 mm, soak them in water at room temperature for 12 hours, take them out, squeeze to remove excess water, and obtain wheat straw softening material with a water content between 60% and 65%. Sorghum straw softening material;

[0048] 2) The wheat straw softening material is subjected to steam explosion, the steam temperature is 185° C., the explosion pressure is 3.5 MPa, and the explosion time is 2.5 minutes. After the steam explosion, it is naturally dried to obtain wheat straw fibers;

[0049] The sorghum straw softening material was subjected to steam explosion, the steam temperature was 195°C, the explosion pressure was 3.5MPa, and the explosion time was 3.5min. After steam explosion, it was naturally dried to obtain sorghum straw fibers;

[0050] 3) Af...

Embodiment 2

[0058] The crop straw environmentally friendly flame-retardant glue-free fiberboard of this example is prepared by the following method:

[0059] 1) Take dry wheat straw and dry sorghum straw and cut them to a length of 20-30 mm, soak them in water at room temperature for 14 hours, take them out, squeeze to remove excess water, and obtain wheat straw softening material with a water content between 60% and 65%. Sorghum straw softening material;

[0060] 2) The wheat straw softening material is subjected to steam explosion, the steam temperature is 190°C, the explosion pressure is 3.0MPa, the explosion time is 3.0min, and the wheat straw is naturally dried after steam explosion to obtain wheat straw fibers;

[0061] The sorghum stalk softening material was subjected to steam explosion, the steam temperature was 200°C, the explosion pressure was 3.0 MPa, and the explosion time was 4.0 min. After steam explosion, it was naturally dried to obtain sorghum straw fibers;

[0062] 3) ...

Embodiment 3

[0070] The crop straw environmentally friendly flame-retardant glue-free fiberboard of this example is prepared by the following method:

[0071] 1) Take dry wheat straw and dry sorghum straw and cut them to a length of 20-30 mm, soak them in water at room temperature for 16 hours, take them out, squeeze to remove excess water, and obtain wheat straw softening material with a water content between 60% and 65%. Sorghum straw softening material;

[0072] 2) The wheat straw softening material is subjected to steam explosion, the steam temperature is 190° C., the explosion pressure is 3.2 MPa, and the explosion time is 3.0 min. After steam explosion, it is naturally dried to obtain wheat straw fibers;

[0073] The sorghum straw softening material was subjected to steam explosion, the steam temperature was 195°C, the explosion pressure was 3.2MPa, and the explosion time was 3.5min. After steam explosion, it was naturally dried to obtain sorghum straw fibers;

[0074] 3) After mixi...

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Abstract

The invention relates to an environment-friendly flame-retardant non-adhesive fiberboard of crop straw and a preparation method thereof. The fiberboard is prepared by the following steps that 1 ) wheat straw and sorghum straw are taken to be cut off correspondingly, and the wheat straw and the sorghum straw are soaked in water to obtain a softened material; 2 ) steam explosion is correspondingly carried out on the softened material to obtain wheat straw fiber and sorghum straw fiber; 3 ) nano calcium carbonate, nano zinc oxide are mixed with nano copper oxide, and modifying is carried out toobtain a modified additive A; nano zinc borate, the nano zinc oxide are mixed with the nano copper oxide, and modifying is carried out to obtain a modified additive B; 4 ) the wheat straw fiber and the sorghum straw fiber are mixed with the modified additive A to obtain a core layer mixture; the wheat straw fiber is mixed with the modified additive B to obtain a surface layer mixture; and 5 ) thecore layer mixture is taken as a core layer, the surface layer mixture is taken as a surface layer to be laid and pre-pressed to obtain a slab, after hot-pressing forming and post-treatment are carried out, the environment-friendly flame-retardant non-adhesive fiberboard is obtained. The fiberboard has no formaldehyde release and has good mechanical property, good anti-water, moisture-proof, anti-corrosion and antibacterial properties; and good in fireproof and flame-retardant effects, and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of straw fiber boards, and in particular relates to an environmentally friendly, flame-retardant, glue-free fiber board with 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, usually referring to the remaining parts of wheat, rice, corn, potatoes, oilseeds, cotton, sugarcane and other crops after harvesting seeds. Regenerated 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-based panel industry is an effective way to solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N3/12B27N3/18
CPCB27N3/04B27N3/12B27N3/18B27N3/183
Inventor 李建州
Owner 霸州市光洋人造板制造有限公司
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