Preparation method of fireproof and flame-retardant density board

Abstract

The invention relates to the technical field of board manufacturing, in particular to a preparation method of a fireproof and flame-retardant density board. The preparation method includes the steps of preparation of basic fibers, preparation of reinforced fibers, preparation of an adhesive, preparation of a flame-retardant enhancer, preparation of a curing agent, material mixing and board preparation. According to the preparation method of the board, waste is recycled, environmental friendliness is achieved, the prepared board has good mechanical strength and excellent mould-proof and flame-retardant performance, no harmful gas is released, the production process is controllable, no toxins or harm is caused, and the board is suitable for volume production and has high practical value andgood application prospects.

Description

technical field

[0001] The invention relates to the technical field of modern papermaking, in particular to a method for preparing a fireproof and flame-retardant density board. Background technique

[0002] On the one hand, wood has always been favored by humans. Its natural texture, texture, structural mechanical properties, and ease of processing are irreplaceable by other materials, and it is widely used in furniture manufacturing and building materials industries. However, the material of some wood, especially plantation wood, cannot meet the needs of the public. For example, its structure is relatively loose, low density, easy to be eaten by insects, bacterial erosion, acid, alkali and weathering degradation, etc. Therefore, the application of composite boards was born, and now Some raw materials in the board are too single, and the prepared board has poor pressure resistance and mechanical properties.

[0003] On the other hand, wood flame retardant is a method of im...

Examples

Embodiment 1

[0046] A method for preparing a fire-resistant and flame-retardant MDF of the present embodiment comprises the following steps:

[0047] Step 1: put agricultural waste straw and wood processing waste into a pulverizer for crushing, add the mixed augmentative plant extracts into a steamer, keep warm at a temperature of 50°C for 5 hours, and then carry out pressure cooking for 1 hour, and then heat grind Machine grinding, put into a closed pressure container, keep it under 2Mpa air pressure for 10 minutes, open the closed container instantly, filter the mixed material, roll and knead the mixed material, add 4 parts by weight of tetrabutyl titanate after drying, no 40 parts of water ethanol, 10 parts of magnesium sulfate solution with a mass fraction of 35%, and 15 parts of polyvinyl alcohol in an impregnating solution, stirred and soaked for 20 minutes, drained and set aside;

[0048] Step 2: Pulverize shavings and cardboard fibers, and add 50 parts by weight of water, 20 parts ...

Embodiment 2

[0067] A method for preparing a fire-resistant and flame-retardant MDF of the present embodiment comprises the following steps:

[0068] Step 1: Put agricultural waste straw and wood processing waste into a pulverizer for crushing, add the mixed augmentative plant extracts into a steamer and keep it warm at a temperature of 70°C for 7 hours, then carry out pressure cooking for 2 hours, and then heat grind Machine grinding, put into a closed pressure container, keep it under 2Mpa air pressure for 10 minutes, open the closed container instantly, filter the mixed material, roll and knead the mixed material, add 6 parts by weight of tetrabutyl titanate after drying, no 50 parts of water ethanol, 15 parts of magnesium sulfate solution with a mass fraction of 35%, and 20 parts of polyvinyl alcohol in an impregnating solution, stirred and soaked for 30 minutes, drained and set aside;

[0069] Step 2: Pulverize shavings and cardboard fibers, and add 50 parts by weight of water, 20 par...

Embodiment 3

[0088] A method for preparing a fire-resistant and flame-retardant MDF of the present embodiment comprises the following steps:

[0089] Step 1: put agricultural waste straw and wood processing waste into a pulverizer to pulverize, mix augmentative plant extracts into a steamer, keep warm at a temperature of 60°C for 6 hours, and then carry out pressure cooking for 1.5 hours, and then heat Grind with a mill, put it into a closed pressure container, keep it under 2Mpa air pressure for 10 minutes, open the closed container instantly, filter the mixed material, roll and knead the mixed material, add 5 parts by weight of tetrabutyl titanate after drying, 45 parts of absolute ethanol, 12 parts of magnesium sulfate solution with a mass fraction of 35%, and 18 parts of polyvinyl alcohol in an impregnating solution, stirred and soaked for 25 minutes, drained and set aside;

[0090] Step 2: Pulverize shavings and cardboard fibers, and add 50 parts by weight of water, 20 parts of causti...

technical field

[0001] The invention relates to the technical field of modern papermaking, in particular to a method for preparing a fireproof and flame-retardant density board. Background technique

[0002] On the one hand, wood has always been favored by humans. Its natural texture, texture, structural mechanical properties, and ease of processing are irreplaceable by other materials, and it is widely used in furniture manufacturing and building materials industries. However, the material of some wood, especially plantation wood, cannot meet the needs of the public. For example, its structure is relatively loose, low density, easy to be eaten by insects, bacterial erosion, acid, alkali and weathering degradation, etc. Therefore, the application of composite boards was born, and now Some raw materials in the board are too single, and the prepared board has poor pressure resistance and mechanical properties.

[0003] On the other hand, wood flame retardant is a method of im...

Examples

Embodiment 1

[0046] A method for preparing a fire-resistant and flame-retardant MDF of the present embodiment comprises the following steps:

[0047] Step 1: put agricultural waste straw and wood processing waste into a pulverizer for crushing, add the mixed augmentative plant extracts into a steamer, keep warm at a temperature of 50°C for 5 hours, and then carry out pressure cooking for 1 hour, and then heat grind Machine grinding, put into a closed pressure container, keep it under 2Mpa air pressure for 10 minutes, open the closed container instantly, filter the mixed material, roll and knead the mixed material, add 4 parts by weight of tetrabutyl titanate after drying, no 40 parts of water ethanol, 10 parts of magnesium sulfate solution with a mass fraction of 35%, and 15 parts of polyvinyl alcohol in an impregnating solution, stirred and soaked for 20 minutes, drained and set aside;

[0048] Step 2: Pulverize shavings and cardboard fibers, and add 50 parts by weight of water, 20 parts ...

Embodiment 2

[0067] A method for preparing a fire-resistant and flame-retardant MDF of the present embodiment comprises the following steps:

[0068] Step 1: Put agricultural waste straw and wood processing waste into a pulverizer for crushing, add the mixed augmentative plant extracts into a steamer and keep it warm at a temperature of 70°C for 7 hours, then carry out pressure cooking for 2 hours, and then heat grind Machine grinding, put into a closed pressure container, keep it under 2Mpa air pressure for 10 minutes, open the closed container instantly, filter the mixed material, roll and knead the mixed material, add 6 parts by weight of tetrabutyl titanate after drying, no 50 parts of water ethanol, 15 parts of magnesium sulfate solution with a mass fraction of 35%, and 20 parts of polyvinyl alcohol in an impregnating solution, stirred and soaked for 30 minutes, drained and set aside;

[0069] Step 2: Pulverize shavings and cardboard fibers, and add 50 parts by weight of water, 20 par...

Embodiment 3

[0088] A method for preparing a fire-resistant and flame-retardant MDF of the present embodiment comprises the following steps:

[0089] Step 1: put agricultural waste straw and wood processing waste into a pulverizer to pulverize, mix augmentative plant extracts into a steamer, keep warm at a temperature of 60°C for 6 hours, and then carry out pressure cooking for 1.5 hours, and then heat Grind with a mill, put it into a closed pressure container, keep it under 2Mpa air pressure for 10 minutes, open the closed container instantly, filter the mixed material, roll and knead the mixed material, add 5 parts by weight of tetrabutyl titanate after drying, 45 parts of absolute ethanol, 12 parts of magnesium sulfate solution with a mass fraction of 35%, and 18 parts of polyvinyl alcohol in an impregnating solution, stirred and soaked for 25 minutes, drained and set aside;

[0090] Step 2: Pulverize shavings and cardboard fibers, and add 50 parts by weight of water, 20 parts of causti...