Die pressing biosynthesis blockboard and preparing method thereof

Abstract

The invention discloses a die pressing biosynthesis blockboard and a preparing method thereof. A novel natural composite panel can be obtained. Various physical and chemical performance indexes of finished products meet the national standard and user requirements, pollution is avoided, formaldehyde is low, the formaldehyde releasing amount is smaller than or equal to 0.5 mg / 100 mg, the tensile strength is larger than or equal to 0.8 mpa, the bending strength is larger than or equal to 20 mpa, high-temperature resistance, water resistance, corrosion resistance, ultraviolet ray resistance, ageing resistance, heat resistance and photochemical performance of the novel natural composite panel are all superior to those of an ordinary blockboard, and the novel natural composite panel is a novel panel capable of meeting the modern green and environment-friendliness concept.

Description

technical field

[0001] The invention relates to a molded biosynthetic joinery board and a preparation method thereof. Background technique

[0002] In recent years, the application of composite boards has become increasingly widespread, and adhesives with different properties are required in the processing and use of composite boards. The commonly used adhesives are mostly artificial synthetic adhesives, such as urea-formaldehyde resin, phenolic resin, etc. These adhesives will release harmful substances such as formaldehyde during use, which is harmful to the environment and human health. Therefore, the use of such synthetic adhesives is gradually restricted. Therefore, there is an urgent need for a new type of adhesive and a new type of board that meets the concept of modern green environmental protection. Contents of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a molded biosynthetic blockboard...

Examples

Embodiment 1

[0040] 1) Add 80kg of biosynthetic resin and 20kg of urea-formaldehyde resin into the glue mixer, add 4-6kg of active filler flour at room temperature and 200rpm stirring, stir for 10-15min, add curing agent ammonium chloride and make the final concentration 0.5- 1.0%, continue to stir for 10 minutes, when the pH value is 6.0, the biosynthetic glue is prepared and set aside;

[0041] Wherein, the biosynthetic resin is prepared by the following method:

[0042] A) take by weighing corn gluten powder 20kg, water 80kg, citric acid 0.65kg, sodium hydroxide 0.08kg, sodium carbonate 0.25kg, sugar alcohol 0.03kg, lauric acid 0.06kg, formic acid 0.02kg, nano silicon dioxide 6kg;

[0043] b) Put the water with a temperature of 25° C. into the reaction kettle, add the citric acid and sodium hydroxide to the water under stirring at 150 rpm, and prepare a buffer solution with a pH value of 9.0;

[0044] c) Slowly add the corn gluten powder to the buffer solution obtained in step b) under...

Embodiment 2

[0053] Among the present embodiment, the biosynthetic resin is 72kg, the urea-formaldehyde resin is 28kg, the active filler flour is 5kg, and the final concentration of curing agent ammonium chloride is 0.7%; in the preparation method of the biosynthetic resin, corn gluten powder 19kg, water 85kg, citric acid 0.68kg, sodium hydroxide 0.085kg, sodium carbonate 0.23kg, sugar alcohol 0.027kg, lauric acid 0.056kg, formic acid 0.016kg, nano silicon dioxide 5.5kg ; All the other are with embodiment 1.

Embodiment 3

[0055] Among the present embodiment, the biosynthetic resin is 87kg, the urea-formaldehyde resin is 13kg, the active filler flour is 6kg, and the final concentration of curing agent ammonium chloride is 0.9%; in the preparation method of the biosynthetic resin, corn gluten powder 21kg, water 75kg, citric acid 0.63kg, sodium hydroxide 0.075kg, sodium carbonate 0.26kg, sugar alcohol 0.033kg, lauric acid 0.063kg, formic acid 0.023kg, nano silicon dioxide 6.5kg ; All the other are with embodiment 1.

technical field

[0001] The invention relates to a molded biosynthetic joinery board and a preparation method thereof. Background technique

[0002] In recent years, the application of composite boards has become increasingly widespread, and adhesives with different properties are required in the processing and use of composite boards. The commonly used adhesives are mostly artificial synthetic adhesives, such as urea-formaldehyde resin, phenolic resin, etc. These adhesives will release harmful substances such as formaldehyde during use, which is harmful to the environment and human health. Therefore, the use of such synthetic adhesives is gradually restricted. Therefore, there is an urgent need for a new type of adhesive and a new type of board that meets the concept of modern green environmental protection. Contents of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a molded biosynthetic blockboard...

Examples

Embodiment 1

[0040] 1) Add 80kg of biosynthetic resin and 20kg of urea-formaldehyde resin into the glue mixer, add 4-6kg of active filler flour at room temperature and 200rpm stirring, stir for 10-15min, add curing agent ammonium chloride and make the final concentration 0.5- 1.0%, continue to stir for 10 minutes, when the pH value is 6.0, the biosynthetic glue is prepared and set aside;

[0041] Wherein, the biosynthetic resin is prepared by the following method:

[0042] A) take by weighing corn gluten powder 20kg, water 80kg, citric acid 0.65kg, sodium hydroxide 0.08kg, sodium carbonate 0.25kg, sugar alcohol 0.03kg, lauric acid 0.06kg, formic acid 0.02kg, nano silicon dioxide 6kg;

[0043] b) Put the water with a temperature of 25° C. into the reaction kettle, add the citric acid and sodium hydroxide to the water under stirring at 150 rpm, and prepare a buffer solution with a pH value of 9.0;

[0044] c) Slowly add the corn gluten powder to the buffer solution obtained in step b) under...

Embodiment 2

[0053] Among the present embodiment, the biosynthetic resin is 72kg, the urea-formaldehyde resin is 28kg, the active filler flour is 5kg, and the final concentration of curing agent ammonium chloride is 0.7%; in the preparation method of the biosynthetic resin, corn gluten powder 19kg, water 85kg, citric acid 0.68kg, sodium hydroxide 0.085kg, sodium carbonate 0.23kg, sugar alcohol 0.027kg, lauric acid 0.056kg, formic acid 0.016kg, nano silicon dioxide 5.5kg ; All the other are with embodiment 1.

Embodiment 3

[0055] Among the present embodiment, the biosynthetic resin is 87kg, the urea-formaldehyde resin is 13kg, the active filler flour is 6kg, and the final concentration of curing agent ammonium chloride is 0.9%; in the preparation method of the biosynthetic resin, corn gluten powder 21kg, water 75kg, citric acid 0.63kg, sodium hydroxide 0.075kg, sodium carbonate 0.26kg, sugar alcohol 0.033kg, lauric acid 0.063kg, formic acid 0.023kg, nano silicon dioxide 6.5kg ; All the other are with embodiment 1.