Green and environmentally friendly wheat straw board production method

Application number: CN201710454891.1 Application date: June 16, 2017

Publication Number: CN107498686A Publication Date: December 22, 2017

[Applicant] Henan Anchao Plate Technology Co., Ltd. [Address] Xiling Village, Zhaoji Town, Dengzhou City, Nanyang City, Henan Province 473000

[Inventor] Guo Zhengyan; Guo Ge

Patent Agency: Zhengzhou Hongyuanshuai Patent Agency (General Partnership) 41117 Agent: Qin Shunsheng

[Country and Province Code] 41

[Abstract] This invention discloses a green and environmentally friendly wheat straw board production method, which is prepared according to the following steps: wheat straw shredding to 1mm-30mm thick → surface treatment using a combination of physical and chemical methods → uniform glue mixing → paving → pre-pressing → hot pressing → cutting to length → curing → drying → trimming and surface treatment → production. Surface treatment involves adding 0.01%-0.5% by weight of the wheat straw raw material (SIO), a nanomaterial capable of pitting waxy surfaces at temperatures above 90°C. Then, 0.01%-0.5% of the wheat straw raw material containing silicon-oxygen chemical bonds, similar to the waxy structure on the straw surface, is added to increase intermolecular affinity. An inorganic gelling agent is added at 10%-30% by weight of the wheat straw. Finally, an adhesive capable of forming hydrogen bonds or chemical bonds with polyhydroxy structures is added at a dosage of 0.1%-5%. This invented product is a low-cost, high-performance alternative to wood board. It is lightweight, environmentally friendly, releases no toxic substances, and is high-strength, flame-retardant, sound-insulating, and moisture-resistant.

[Sovereign Item] A green and environmentally friendly wheat straw board production method, characterized by the following steps: wheat straw crushing to 1#mm#~30mm → surface treatment by combining physical and chemical methods → uniform glue mixing → paving → pre-pressing → hot pressing → cutting to length → curing → drying → trimming and surface treatment → product; wherein, the moisture content of the raw wheat straw is 10%~15%; the surface treatment: adding 0.01%~0.5% by mass percentage of the wheat straw raw material, which is a nanomaterial SIO capable of pitting the waxy surface under temperature conditions above 90°C, and the nanomaterial SIO is one of nanomagnesium oxide microcapsules, nanocalcium oxide microcapsules, nanosodium oxide microcapsules, nanopotassium oxide microcapsules or nanoalkaline silicon oxide microcapsules; then, adding 0.01%~0.5% of the wheat straw containing silicon oxide, which has a waxy structure similar to that on the surface of the straw. Chemical bonding raw materials, wherein the chemical bonding raw materials containing silicon and oxygen are silicone resin, alkaline silicon oxide, silanol ester, polysilanol ester, sodium salt of silanol ester, sodium salt of polysilanol ester or borax, to increase the affinity between molecules, and an inorganic gelling agent is added in an amount of 10% to 30% by mass of wheat straw, wherein the inorganic gelling agent is one of activated silica, activated alumina, magnesium oxide and magnesium chloride, plaster of Paris, calcium oxide, calcium carbonate, volcanic ash or cement, mainly to increase internal bonding force, strength, flame retardancy, water resistance, etc.; finally, an adhesive capable of forming hydrogen bonds or chemical bonds with the polyhydroxy structure is added, and the amount of the adhesive is 0.1% to 5%, and the adhesive is one of melamine formal, polyvinyl butyral, casein, oxidized starch, starch adhesive, bone glue, polyvinyl alcohol, phenolic resin, epoxy resin or polyurethane.