Modified polyurethane heat insulation board and production method thereof

Abstract

The invention discloses a modified polyurethane heat insulation board and a production method thereof, and belongs to the technical field of building materials. Raw materials for preparing the modified polyurethane heat insulation board comprise 80-120 parts of a polyurethane particle, 10-30 parts of resin adhesive powder, 10-30 parts of a foaming agent, 30-60 parts of a fire retardant and 1-5 parts of a film forming assistant, wherein the fire retardant is composed of 3-10% of zinc borate, 20-30% of magnesium oxide, 30-40% of magnesium chloride, 10-20% of silicon powder, 1-10% of diatomite, and the balance of water. The invention also provides a production method of the modified polyurethane heat insulation board. The polyurethane heat insulation board is formed through rolling, molding and decorative board laying of waste polyurethane particles under the action of the resin adhesive powder, the foaming agent, the fire retardant and the film forming assistant. The production method has the advantages of simple technology, less investment and low cost, and the polyurethane heat insulation board has the advantages of good heat insulation performances, high fireproof grade, safe use and wide application range.

Description

technical field

[0001] The invention belongs to the technical field of building materials, in particular to a modified polyurethane composite insulation board. Background technique

[0002] Rigid polyurethane foam is a high polymer with unique thermal insulation function prepared by the reaction of polyisocyanate and polyol. It has excellent thermal insulation, fire resistance and wear resistance. Due to its excellent performance and wide application fields, the product development is extremely rapid, and the output doubles. At the same time, a large amount of waste is generated, including scraps in production and various types of rigid polyurethane foam materials that are aged and scrapped after use. Currently, these foams are usually discarded, landfilled or incinerated.

[0003] Rigid polyurethane is a thermosetting resin material, which cannot be recycled by melting and heating molding methods like thermoplastic resins. And waste incineration to recover heat, this way ...

Examples

preparation example Construction

[0011] A preparation method of a modified polyurethane composite insulation board of the present invention comprises the following steps: 1) Take zinc borate, magnesium oxide, magnesium chloride, silicon powder, diatomaceous earth and water, mix them, and stir them evenly to make a fireproofing agent for later use ;2) Take the polyurethane granules, resin powder, foaming agent, film-forming aid and the fireproofing agent obtained in step 1), stir, mix evenly, put it into the mold, flatten it, and perform the first rolling to form the first board; 3) Lay a layer of decorative panels on the bottom and upper part of the primary board obtained in step 2), and carry out the second rolling and shaping to obtain a modified polyurethane composite insulation board.

[0012] Example 1

[0013] Weigh 3g of zinc borate, 20g of magnesium oxide, 30g of magnesium chloride, 20g of silicon powder, 10g of diatomaceous earth and 60g of water, mix and stir evenly to make a fire retardant and se...

Embodiment

[0021] Weigh 5g of zinc borate, 25g of magnesium oxide, 35g of magnesium chloride, 15g of silicon powder, 5g of diatomaceous earth and 100g of water, mix and stir evenly to make a fire retardant and set aside.

[0022] Take 120g of polyurethane particles, 30g of resin powder, 30g of foaming agent, 5g of film-forming aid and 60g of the above-mentioned fire retardant, stir, mix evenly, put into the mold, flatten, and perform the first rolling to form the first board.

[0023] Lay a layer of decorative panels on the bottom and upper part of the above-mentioned primary board, and carry out the second rolling and shaping to obtain the modified polyurethane composite thermal insulation board.

technical field

[0001] The invention belongs to the technical field of building materials, in particular to a modified polyurethane composite insulation board. Background technique

[0002] Rigid polyurethane foam is a high polymer with unique thermal insulation function prepared by the reaction of polyisocyanate and polyol. It has excellent thermal insulation, fire resistance and wear resistance. Due to its excellent performance and wide application fields, the product development is extremely rapid, and the output doubles. At the same time, a large amount of waste is generated, including scraps in production and various types of rigid polyurethane foam materials that are aged and scrapped after use. Currently, these foams are usually discarded, landfilled or incinerated.

[0003] Rigid polyurethane is a thermosetting resin material, which cannot be recycled by melting and heating molding methods like thermoplastic resins. And waste incineration to recover heat, this way ...

Examples

preparation example Construction

[0011] A preparation method of a modified polyurethane composite insulation board of the present invention comprises the following steps: 1) Take zinc borate, magnesium oxide, magnesium chloride, silicon powder, diatomaceous earth and water, mix them, and stir them evenly to make a fireproofing agent for later use ;2) Take the polyurethane granules, resin powder, foaming agent, film-forming aid and the fireproofing agent obtained in step 1), stir, mix evenly, put it into the mold, flatten it, and perform the first rolling to form the first board; 3) Lay a layer of decorative panels on the bottom and upper part of the primary board obtained in step 2), and carry out the second rolling and shaping to obtain a modified polyurethane composite insulation board.

[0012] Example 1

[0013] Weigh 3g of zinc borate, 20g of magnesium oxide, 30g of magnesium chloride, 20g of silicon powder, 10g of diatomaceous earth and 60g of water, mix and stir evenly to make a fire retardant and se...

Embodiment

[0021] Weigh 5g of zinc borate, 25g of magnesium oxide, 35g of magnesium chloride, 15g of silicon powder, 5g of diatomaceous earth and 100g of water, mix and stir evenly to make a fire retardant and set aside.

[0022] Take 120g of polyurethane particles, 30g of resin powder, 30g of foaming agent, 5g of film-forming aid and 60g of the above-mentioned fire retardant, stir, mix evenly, put into the mold, flatten, and perform the first rolling to form the first board.

[0023] Lay a layer of decorative panels on the bottom and upper part of the above-mentioned primary board, and carry out the second rolling and shaping to obtain the modified polyurethane composite thermal insulation board.