Long-acting formaldehyde-free impregnated paper and its preparation method

An impregnated paper, long-lasting technology, applied in the direction of papermaking, paper, textiles and papermaking, etc., can solve the problems that cannot be completely removed, the bond strength of the resin system is reduced, and the wet strength of the impregnated paper is reduced, so as to improve the impregnated bonding performance and Effects of storage characteristics, improvement of transparency and quantification, and guarantee of environmental characteristics

Active Publication Date: 2021-01-26
天津市盛世德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing impregnated paper uses amino resin as the impregnating glue to impregnate the base paper. Although the release of formaldehyde is reduced by reducing the molar ratio of formaldehyde to urea, the effect is limited; the researchers added formaldehyde reactants such as melamine to the amino resin matrix. To reduce the formaldehyde content in the resin system, its effect is better than reducing the molar ratio of formaldehyde and urea, but it will cause the resin system bond strength to decrease, resulting in a decrease in the wet strength of the impregnated paper, and a significant increase in production costs; the biggest deficiency of the prior art The reason is that the toxic substances such as free formaldehyde and free phenol in the resin system cannot be completely removed. Although the total amount of toxic substances in the impregnated paper is reduced, they will be released slowly during use, causing long-term harm to the human body and the environment

Method used

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  • Long-acting formaldehyde-free impregnated paper and its preparation method
  • Long-acting formaldehyde-free impregnated paper and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Preparation of long-acting formaldehyde-free impregnated paper

[0033] 1. Reinforcement phase preparation

[0034] 1) Preparation of aldehyde-removing enhanced phase matrix: Add 100 parts by weight of nano coconut fiber carbon to 212 parts by weight of absolute ethanol to form a mixed solution. The average particle size of coconut fiber carbon is 80nm, and its micropore volume is not less than 92%. The average pore diameter of the pores is 5nm, ultrasonic treatment for 20min, and drying at 80°C for 30min to obtain a nano-solid; add 331 parts by weight of anhydrous acetic acid to 100 parts by weight of nano-coconut carbon solids, and add 353 parts by weight of Ammonia solution with a mass fraction of 39% was used to obtain a mixed solution, which was dried at 95°C for 35 minutes to obtain an aldehyde-removing enhanced phase matrix powder;

[0035] 2) Surface deposition of aldehyde-removing enhancement phase matrix: adopt 180 parts by weight of 0.2 mol / L hydr...

Embodiment 2

[0049] Embodiment 2: Preparation of long-acting formaldehyde-free impregnated paper

[0050] 1. Reinforced phase preparation

[0051] 1) Preparation of aldehyde-removing enhanced phase matrix: Add 100 parts by weight of nano coconut fiber carbon to 212 parts by weight of absolute ethanol to form a mixed solution. The average particle size of coconut fiber carbon is 90nm, and its micropore volume is not less than 92%. The average pore diameter of the pores is 5nm, ultrasonic treatment for 20min, and drying at 80°C for 30min to obtain a nano-solid; add 331 parts by weight of anhydrous acetic acid to 100 parts by weight of nano-coconut carbon solids, and add 353 parts by weight of Ammonia solution with a mass fraction of 39% was used to obtain a mixed solution, which was dried at 95°C for 35 minutes to obtain an aldehyde-removing enhanced phase matrix powder;

[0052] 2) Surface deposition of aldehyde-removing enhancement phase matrix: adopt 180 parts by weight of 0.2mol / L hydro...

Embodiment 3

[0066] Embodiment 3: Preparation of long-acting formaldehyde-free impregnated paper

[0067] 1. Reinforced phase preparation

[0068] 1) Preparation of aldehyde-removing enhanced phase matrix: Add 100 parts by weight of nano coconut fiber carbon to 212 parts by weight of absolute ethanol to form a mixed solution. The average particle size of coconut fiber carbon is 105nm, and its micropore volume is not less than 92%. The average pore diameter of the pores is 5nm, ultrasonic treatment for 20min, and drying at 80°C for 30min to obtain a nano-solid; add 331 parts by weight of anhydrous acetic acid to 100 parts by weight of nano-coconut carbon solids, and add 353 parts by weight of Ammonia solution with a mass fraction of 39% was used to obtain a mixed solution, which was dried at 95°C for 35 minutes to obtain an aldehyde-removing enhanced phase matrix powder;

[0069] 2) Surface deposition of aldehyde-removing enhancement phase matrix: adopt 180 parts by weight of 0.2mol / L hydr...

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Abstract

The invention relates to a long-acting formaldehyde-free impregnated paper and a preparation method thereof. The raw materials of the long-acting formaldehyde-free impregnated paper include: raw paperand modified impregnated resin, wherein the modified impregnated resin includes the following raw materials: a formaldehyde solution, 2-methyl-2butanol, a sodium hydroxide solution, a formaldehyde removal reinforced phase emulsion, phenol and an acetic acid solution. The formaldehyde removal reinforced phase emulsion comprises the following raw materials: formaldehyde removal reinforced phase matrix powder, a surface deposition solution and 1-octadecanol. The surface deposition solution comprises the following raw materials: hydrochloric acid, potato starch, dicyclohexyl peroxydicarbonate, nonylphenol polyoxyethylene ether, methyl methacrylate, blocked isocyanate, and a sodium hydroxide solution. The reinforced phase matrix comprises the following raw materials: nano-coir carbon, anhydrous ethanol, anhydrous acetic acid and an ammonia water solution. Compared with the prior art, according to the long-acting formaldehyde-free impregnated paper provided by the embodiment of the invention, the impregnation bonding performance and storage characteristic can be significantly improved, the transparency and quantification can be improved, and the long-acting formaldehyde-free impregnatedpaper causes no harm to the human body and environment in the long-term application process.

Description

technical field [0001] The invention belongs to the field of new materials, in particular to a long-acting formaldehyde-free impregnated paper and a preparation method thereof. Background technique [0002] Artificial wood flooring is made of resin impregnated paper and artificially laminated wooden substrates through heat pressing, which can greatly reduce the consumption of solid wood materials and effectively protect forest resources. It has been widely used in recent years. In practical applications, it needs to have high surface wear resistance, corrosion resistance, moisture resistance and environmental protection performance. Especially with the continuous improvement of people's safety awareness, how to improve its environmental protection performance is the key. Impregnated paper is a key component that affects the comprehensive performance of artificial wood flooring, and its various properties, especially environmental performance, are the direct factors that dete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/02D21H17/05D21H17/06D21H17/28D21H17/64D21H17/65
CPCD21H17/02D21H17/05D21H17/06D21H17/28D21H17/64D21H17/65
Inventor 朱雪男卢健张发
Owner 天津市盛世德新材料科技有限公司
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