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A kind of waterproof flame-retardant coating for corrugated cardboard and preparation method thereof

A technology of flame-retardant coating and corrugated cardboard, which is applied in the field of corrugated cardboard, can solve the problems of great impact on the strength of corrugated cardboard, restrictions on the use of flame-retardant corrugated cardboard, and large dosage, so as to improve the mechanical strength and mechanical properties, and the fire-proof and flame-retardant effect is obvious , Good waterproof and flame retardant effect

Active Publication Date: 2022-03-29
台州市黄岩华印纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the existing flame retardants for corrugated cardboard can achieve a certain flame-retardant effect, there are the following defects: one is the use of halogen-containing flame retardants, which will produce harmful gases such as hydrogen halides when a fire occurs, causing harm to the human body and causing damage to the human body. Environmental damage; the second is inorganic flame retardants such as Al(OH) 3 , Mg(OH) 2 There are problems such as easy loss, large dosage, and great influence on the strength of corrugated cardboard, which seriously restrict the use of flame-retardant corrugated cardboard.

Method used

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  • A kind of waterproof flame-retardant coating for corrugated cardboard and preparation method thereof

Examples

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Effect test

Embodiment 1

[0044] The waterproof and flame-retardant coating for corrugated cardboard of the present embodiment includes the following components in weight percent: 50% of silicone modified polyurethane aqueous dispersion, 10% of ammonium polyphosphate, 6.0% of melamine phosphate, 6.0% of pentaerythritol, iso 4.0% propanol, 3.0% isopropanol silica sol, 1.5% methyltrimethoxysilane, 0.2% nonylphenol polyoxyethylene ether, 0.5% additive, and the balance is water.

[0045] The preparation method of the waterproof flame retardant coating for corrugated cardboard of the present embodiment, comprises the following steps:

[0046] 1) Take the formula quantity of isopropanol silica sol, add 15% water of the mass of isopropanol silica sol and 1 / 3 formula quantity of methyltrimethoxysilane, stir and react at 50°C for 60min, then cool to room temperature , to obtain modified silica sol;

[0047] 2) Mix ammonium polyphosphate, melamine phosphate, and pentaerythritol with 2 / 3 of the formula amount of...

Embodiment 2

[0054] The waterproof and flame-retardant coating for corrugated cardboard of the present embodiment includes the following components in weight percent: 50% of silicone modified polyurethane water dispersion, 12% of ammonium polyphosphate, 5.0% of melamine phosphate, 5.0% of pentaerythritol, iso 4.5% propanol, 3.2% isopropanol silica sol, 1.8% methyltrimethoxysilane, 0.15% nonylphenol polyoxyethylene ether, 0.5% additive, and the balance is water.

[0055] The preparation method of the waterproof flame retardant coating for corrugated cardboard of the present embodiment, comprises the following steps:

[0056] 1) Take the isopropanol silica sol of the formula, add 12% of the mass of isopropanol silica sol and 1 / 3 of the formula of methyltrimethoxysilane, stir and react at 60°C for 50min, and then cool to room temperature to obtain Modified silica sol;

[0057] 2) Mix ammonium polyphosphate, melamine phosphate, and pentaerythritol with 2 / 3 of the formula amount of methyltrime...

Embodiment 3

[0064] The waterproof and flame-retardant coating for corrugated cardboard of the present embodiment includes the following components in weight percent: 50% of silicone modified polyurethane aqueous dispersion, 11% of ammonium polyphosphate, 5.0% of melamine phosphate, 6.0% of pentaerythritol, iso 5.0% propanol, 3.5% isopropanol silica sol, 1.8% methyltrimethoxysilane, 0.1% nonylphenol polyoxyethylene ether, 0.5% additive, and the balance is water.

[0065] The preparation method of the waterproof flame retardant coating for corrugated cardboard of the present embodiment, comprises the following steps:

[0066] 1) Take the isopropanol silica sol of the formulation amount, add 10% of the mass of the isopropanol silica sol and 1 / 3 of the formulation amount of methyltrimethoxysilane, stir and react at 55°C for 55min, and then cool to room temperature to obtain Modified silica sol;

[0067] 2) Mix ammonium polyphosphate, melamine phosphate, and pentaerythritol with 2 / 3 of the fo...

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Abstract

The invention relates to a waterproof and flame-retardant coating for corrugated cardboard and a preparation method thereof. The waterproof and flame-retardant coating includes water and the following components in weight percentage: 48%-52% of organic silicon modified polyurethane aqueous dispersion, polyphosphoric acid Ammonium 10%-12%, Melamine Phosphate 5.0%-6.0%, Pentaerythritol 5.0%-6.0%, Isopropanol 4.0%-5.0%, Isopropanol Silica Sol 3.0%-3.5%, Methyltrimethoxysilane 1.5 %‑1.8%, nonylphenol polyoxyethylene ether 0.1%‑0.2%, additives 0.5%‑1.0%. When the coating is thin and the coating amount is small, the waterproof and flame-retardant coating improves the mechanical strength and mechanical properties of the corrugated cardboard; makes the corrugated cardboard reach the flame-retardant level, and the fire-proof and flame-retardant effect is obvious; the water contact angle on the surface of the coating film reaches Above 120°, corrugated cardboard has good moisture and water resistance.

Description

technical field [0001] The invention belongs to the technical field of corrugated cardboard, specifically relates to a waterproof and flame-retardant coating for corrugated cardboard, and also relates to a preparation method of the above-mentioned waterproof and flame-retardant coating for corrugated cardboard. Background technique [0002] With the rise and explosive development of e-commerce, logistics and express delivery industries, the amount of corrugated cardboard used as packaging materials has also shown a substantial increase, and the corrugated cardboard industry has entered a period of rapid development and growth. Corrugated cardboard, also known as corrugated cardboard, is a multi-layer cardboard formed by processing corrugated base paper into a corrugated shape and bonding it with boxboard in a certain way. It is made of at least one layer of corrugated paper and a layer of boxboard. Good strength, elasticity and stiffness. [0003] The use of corrugated card...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/34D21H19/24D21H19/14
CPCD21H21/34D21H19/24D21H19/14
Inventor 魏晓峰
Owner 台州市黄岩华印纸业有限公司
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