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Preparation method of waterproof and flame-retardant corrugated board and waterproof and flame-retardant corrugated board

A corrugated cardboard and flame-retardant technology, which is applied in the field of corrugated cardboard, can solve the problems of restricting the use of flame-retardant corrugated cardboard, great influence on the strength of corrugated cardboard, and environmental damage, and achieve the effects of enhanced mechanical properties, convenient operation, and reduced water absorption.

Inactive Publication Date: 2019-09-27
北京知淘科技有限责任公司
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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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  • Preparation method of waterproof and flame-retardant corrugated board and waterproof and flame-retardant corrugated board

Examples

Experimental program
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Effect test

Embodiment 1

[0046] 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.

[0047] The preparation method of the waterproof flame retardant coating for corrugated cardboard of the present embodiment, comprises the following steps:

[0048] 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;

[0049] 2) Mix ammonium polyphosphate, melamine phosphate, and pentaerythritol with 2 / 3 of the formula amount of...

Embodiment 2

[0056] 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.

[0057] The preparation method of the waterproof flame retardant coating for corrugated cardboard of the present embodiment, comprises the following steps:

[0058] 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;

[0059] 2) Mix ammonium polyphosphate, melamine phosphate, and pentaerythritol with 2 / 3 of the formula amount of methyltrime...

Embodiment 3

[0066] 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, 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.

[0067] The preparation method of the waterproof flame retardant coating for corrugated cardboard of the present embodiment, comprises the following steps:

[0068] 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;

[0069]2) Mix ammonium polyphosphate, melamine phosphate, and pentaerythritol with 2 / 3 of the formu...

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Abstract

The invention relates to a preparation method of a waterproof and flame-retardant corrugated board and the waterproof and flame-retardant corrugated board. The preparation method comprises the following steps: i) placing a waterproof and flame-retardant coating in a coating machine, and quantificationally coating one or both sides of the corrugated board, wherein the waterproof and flame-retardant coating is prepared from the following components: a silicone-modified polyurethane aqueous dispersion, ammonium polyphosphate, melamine phosphate, pentaerythritol, isopropanol, isopropanol silica sol, methyltrimethoxysilane, polyoxyethylene nonylphenol ether, auxiliaries and water; ii) drying the coated corrugated board with saturated steam at a drying temperature of 140-160 DEG C with the retention time of 8-12 s. In the case that the coating is thin and the coating amount is small, the obtained waterproof and flame-retardant corrugated board has good mechanical strength and mechanical properties; a flame retardant level is reached, and the fire-proof and fire-retardant effects are obvious; the water contact angle of a coating film surface reaches 120 degrees or above, so that good moisture resistance and water resistance are realized.

Description

technical field [0001] The invention belongs to the technical field of corrugated cardboard, and specifically relates to a method for preparing a waterproof and flame-retardant corrugated cardboard, and also relates to a waterproof and flame-retardant corrugated cardboard prepared by the above-mentioned preparation method. 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 cor...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H21/16D21H21/34D21H19/40D21H19/44D21H19/46D21H19/64D21H19/62
CPCD21H19/40D21H19/44D21H19/46D21H19/62D21H19/64D21H21/16D21H21/34D21H27/10
Inventor 魏晓峰
Owner 北京知淘科技有限责任公司
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