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Waterproof low-smoke halogen-free flame retardant paper and preparing method thereof

A flame retardant paper and paper technology, applied in the field of packaging materials, can solve the problems of releasing toxic and harmful gases, affecting personal safety, and many laminating processes, and achieving the effects of improving paper strength, wide process window and simple coating process

Active Publication Date: 2019-05-24
SHANGHAI WANGE IND & TRADING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has many coating processes, and the quality is difficult to control, and in the second stage of the coating process, inorganic fillers account for 65-80% of the total weight, making coating difficult
[0005] The use of halogen-containing flame retardants to prepare flame-retardant paper has the advantage of high flame-retardant efficiency, but it will release toxic and harmful gases after burning, causing poisonous gas damage
For example, Chinese patent CN102492259B discloses a tung oil modified alkylphenol-phenolic resin composition and a method for producing high CTI flame-retardant paper-based copper-clad laminates. The composition includes tung oil modified alkylphenol-phenolic resin, nitrogen-containing Alkylphenol-phenolic resin, brominated epoxy resin and flame retardant. This invention uses brominated epoxy resin, which will release toxic and harmful gases after burning, pollute the environment and affect personal safety

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Waterproof low-smoke halogen-free flame retardant paper and preparing method thereof
  • Waterproof low-smoke halogen-free flame retardant paper and preparing method thereof
  • Waterproof low-smoke halogen-free flame retardant paper and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] as attached figure 1 Shown, a kind of preparation method with waterproof low-smoke halogen-free flame-retardant paper comprises the following steps:

[0046] S1, preparing flame retardant mixture, including the following components in weight percentage: poly(3-hydroxyphenyl) phosphate 75%, diphenylmethane diisocyanate (MDI) 20%, catalyst 1%, smoke suppressant 4%, A flame-retardant mixture is obtained, wherein the catalyst is dibutyltin di(dodecylsulfur), and the smoke suppressant is a hydrotalcite smoke suppressant;

[0047] Wherein, preparing flame retardant mixture comprises the following steps:

[0048] S11. First, poly(3-hydroxyphenyl) phosphate is added into the stirring tank according to the proportion, the stirring speed is 100r / min, the stirring time is 20min, and the mixing and dispersion are uniform;

[0049] S12, after step S11, add hydrotalcite smoke suppressant, stirring speed 100r / min, stirring time 10min;

[0050] S13, after step S12, add isocyanate, s...

Embodiment 2

[0058] as attached figure 1 Shown, a kind of preparation method with waterproof low-smoke halogen-free flame-retardant paper comprises the following steps:

[0059] S1, prepare flame-retardant mixture, comprise the component of following percentage by weight: poly(3-hydroxyphenyl) phosphate 95%, diphenylmethane diisocyanate 3%, catalyst 0.1%, smoke suppressant 1.9%, make flame retardant Combustible mixture, wherein the catalyst is dibutyltin dilaurate, and the smoke suppressant is hydrotalcite smoke suppressant;

[0060] Wherein, preparing flame retardant mixture comprises the following steps:

[0061] S11. First, poly(3-hydroxyphenyl) phosphate is added into the stirring tank according to the proportion, the stirring speed is 500r / min, the stirring time is 5min, and the mixture is uniformly dispersed;

[0062] S12, after step S11, add hydrotalcite smoke suppressant, stirring speed 500r / min, stirring time 5min;

[0063] S13, after step S12, add isocyanate, stirring speed 50...

Embodiment 3

[0071] as attached figure 1 Shown, a kind of preparation method with waterproof low-smoke halogen-free flame-retardant paper comprises the following steps:

[0072] S1, preparing flame retardant mixture, comprising the following components in weight percentage: poly(3-hydroxyphenyl) phosphate 80%, diphenylmethane diisocyanate 15%, catalyst 0.5%, hydrotalcite smoke suppressant 4.5%, made Obtain a flame-retardant mixture, wherein the catalyst is dibutyltin dilaurate, and the smoke suppressant is a hydrotalcite smoke suppressant;

[0073] Wherein, preparing flame retardant mixture comprises the following steps:

[0074] S11. First, poly(3-hydroxyphenyl) phosphate is added into the stirring tank according to the proportion, the stirring speed is 200r / min, the stirring time is 15min, and the mixing and dispersion are uniform;

[0075] S12, after step S11, add hydrotalcite smoke suppressant, stirring speed 200r / min, stirring time 8min;

[0076] S13, after step S12, add isocyanate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to waterproof low-smoke halogen-free flame retardant paper and a preparing method thereof. The preparing method comprises the steps of adopting organic phosphate, methylenediphenyl diisocyanate (MDI), an organic tin catalyst and a hydrotalcite smoke suppressant to prepare a flame retardant mixture, then diluting the flame retardant mixture to a certain concentration with a solvent, coating paper with a coating machine, placing the paper into a drying oven to dry and solidify the paper, and finally rolling up the paper. According to the preparing method, a flame retardantwith double components of phosphorous and nitrogen is adopted, and the paper is soaked through coating and then subjected to cross-linking and solidifying to form film. The waterproof low-smoke halogen-free flame retardant paper has the advantages of being good in flame retardant effect and high in waterproofness, has a smoke suppression effect and avoids smoke damage, and the strength of the paper is improved; the coating technology is simple and easy to control, and the one-step forming efficiency is high.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a waterproof, low-smoke, halogen-free, flame-retardant paper and a preparation method thereof. Background technique [0002] Cartons have the advantages of light weight, high cost performance, good structural performance, cushioning, foldable, strong printing adaptability, environmental protection and recyclability, and suitable for automatic packaging operations. In the fierce competition with other packaging materials, cartons have unique properties. It has become the most commonly used and rapidly developing paper packaging container so far, and has become the most important form of packaging in modern packaging. Cartons have been widely used in various product packaging, but currently commonly used cartons do not have anti-skid properties. Corrugated boxes play a very important role in the protection of commodity packaging during transportation and storage. When ...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H21/34D21H19/14D21H21/14D21H19/28D21H21/16
Inventor 李迈骐
Owner SHANGHAI WANGE IND & TRADING CO
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