Urea-formaldehyde foam plastic insulation board and preparation method thereof

A technology of urea-formaldehyde foamed plastic and thermal insulation board is applied in the field of thermal insulation board and its preparation. The effect of low thermal conductivity

Inactive Publication Date: 2013-07-10
SHENYANG DEHUI NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The publication date is February 22, 2006. The Chinese invention patent urea-formaldehyde foam insulation board and its preparation method with publication number CN1736936A discloses a urea-formaldehyde foam insulation board. The urea-formaldehyde foam insulation board has excellent flame retardancy. Light weight, heat preservation, heat insulation, and easy construction, etc., but in practical applications, the urea-formaldehyde foam insulation board has a large shrinkage rate during the drying and water loss process, and the shrinkage rate is greater than 6%, while the national standard for insulatio

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  • Urea-formaldehyde foam plastic insulation board and preparation method thereof

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Embodiment 1

[0027] The urea-formaldehyde foam insulation board is made up of the following components in the following parts by weight ratio: urea-formaldehyde resin: sodium lauryl sulfate: phosphoric acid: urea: mica powder: expanded perlite: water=600:8:10: 6:80:80:300.

[0028] The mesh number of described mica powder is 300 mesh. The particle size of expanded perlite is 2mm.

[0029] The method for preparing urea-formaldehyde foamed plastic insulation board comprises the following steps:

[0030] (1) Take 8kg of sodium lauryl sulfate, 6kg of urea and 300kg of water to make foaming liquid;

[0031] (2) Take 600kg of urea-formaldehyde resin, 80kg of mica powder and 80kg of expanded perlite and mix them evenly to make a mixed raw material;

[0032] (3) Stir the foaming solution with a stirrer and then add the mixed raw materials to stir thoroughly;

[0033] (4) Add 10kg of phosphoric acid to mix and stir evenly, then pour into the mold to form, and after curing, release the mold and ...

Embodiment 2

[0035] The urea-formaldehyde foam plastic insulation board is composed of the following components in the following parts by weight:

[0036] Urea-formaldehyde resin: sodium lauryl sulfate: phosphoric acid: urea: mica powder: expanded perlite: water=700:5:8:3:50:50:200.

[0037] The mesh number of described mica powder is 450 mesh. The particle size of expanded perlite is 4mm.

[0038] The method for preparing urea-formaldehyde foamed plastic insulation board comprises the following steps:

[0039] (1) Take 5kg of sodium lauryl sulfate, 3kg of urea and 200kg of water to make foaming liquid;

[0040] (2) Take 700kg of urea-formaldehyde resin, 50kg of mica powder and 50kg of expanded perlite and mix them evenly to make a mixed raw material;

[0041] (3) Stir the foaming solution with a stirrer and then add the mixed raw materials to stir thoroughly;

[0042] (4) Add 8kg of phosphoric acid, mix and stir evenly, then pour into the mold for molding, and after curing, release th...

Embodiment 3

[0044] The urea-formaldehyde foam insulation board is made up of the following components in the following parts by weight ratio: urea-formaldehyde resin: sodium lauryl sulfate: phosphoric acid: urea: mica powder: expanded perlite: water=620:6:8: 4:70:65:220.

[0045] The mesh number of described mica powder is 400 mesh. The particle size of expanded perlite is 3mm.

[0046] The method for preparing urea-formaldehyde foamed plastic insulation board comprises the following steps:

[0047] (1) Take 6kg of sodium lauryl sulfate, 4kg of urea and 220kg of water to make foaming liquid;

[0048] (2) Take 620kg of urea-formaldehyde resin, 70kg of mica powder and 65kg of expanded perlite and mix them evenly to make a mixed raw material;

[0049] (3) Stir the foaming solution with a stirrer and then add the mixed raw materials to stir thoroughly;

[0050] (4) Add 8kg of phosphoric acid, mix and stir evenly, then pour into the mold for molding, and after curing, release the mold and ...

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Abstract

The invention relates to a urea-formaldehyde foam plastic insulation board, which is prepared from the following components in the ratio of parts by weight of urea resin to sodium dodecyl sulfate to phosphoric acid urea to mica powder to expanded perlite to water being (600-700) to (5-8) to (8-10) to (3-6) to (50-80) to (50-80) to (200-300). The solid substance in the product disclosed by the invention is even in distribution, and small in product density; light foam can be produced; the mica powder is mixed with the expanded perlite according to the graduation as a product aggregate, so as to form a stable volume structure; the shrinkage of the size of the product is reduced; meanwhile, the distribution of inner stress of the product is improved; chapping and bending are avoided; and the problems of bending, chapping and the like in the drying process are also solved. The insulation board disclosed by the invention has the characteristics of low heat-conducting coefficient, good insulating property, and good flame retardant property; and the burning grade is A2 level.

Description

technical field [0001] The invention relates to a thermal insulation board and a preparation method thereof, in particular to a urea-formaldehyde foam plastic insulation board and a preparation method thereof. Background technique [0002] The publication date is February 22, 2006. The Chinese invention patent urea-formaldehyde foam insulation board and its preparation method with publication number CN1736936A discloses a urea-formaldehyde foam insulation board. The urea-formaldehyde foam insulation board has excellent flame retardancy. Light weight, heat preservation, heat insulation, and easy construction, etc., but in practical applications, the urea-formaldehyde foam insulation board has a large shrinkage rate during the drying and water loss process, and the shrinkage rate is greater than 6%, while the national standard for insulation products requires less than 3%. At the same time, the urea-formaldehyde foamed plastic insulation board has problems such as warping and ...

Claims

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Application Information

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IPC IPC(8): C08L61/24C08K3/34C08J9/06C08K3/32
Inventor 安飞李佩江方秀针徐鑫
Owner SHENYANG DEHUI NEW MATERIAL CO LTD
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