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A kind of high-strength packaging flame-retardant paper and its preparation method

A flame-retardant paper and high-strength technology, applied in wrapping paper, wrapping paper, packaging, etc., can solve the problems of insufficient paper strength and toughness, complex processing process, high energy consumption, etc., and achieve excellent mechanical properties, simple process, The effect of low energy consumption

Active Publication Date: 2020-05-26
安徽景丰纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of the present invention improves the binding ability of flame-retardant fillers and paper fibers, and the grafted polyurethane further strengthens the toughness of paper, so that the strength of flame-retardant paper is greatly improved, and the superiority of magnesium hydroxide can be fully utilized. Excellent flame retardant performance, and at the same time solve the shortcomings of the general magnesium hydroxide-based flame retardant system, which has complex processing technology, high energy consumption, and insufficient paper strength and toughness

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-strength packaging flame-retardant paper and a preparation method thereof, the specific process of preparing the flame-retardant paper is as follows:

[0032] Under normal temperature and pressure, dissolve 3.6kg of polyvinyl alcohol fibers in 10kg of magnesium sulfate solution with a mass concentration of 12%, then configure a sodium hydroxide solution with a mass concentration of 8%, and add magnesium sulfate solution at a rate of 3mL / min At the same time, stir vigorously at a speed of 1200r / min until the pH of the solution reaches 11.0-12.0, stop adding the sodium hydroxide solution, and continue stirring for 35 minutes to obtain magnesium hydroxide-polyvinyl alcohol fibers with a particle size of the dispersed phase of 30-50nm Composite sol; install an electric stirrer, a thermometer and a reflux condenser with a water separator on the reaction vessel, and add 10kg of the resulting composite sol, then add 4kg of polyurethane slurry and 0.2kg of phthalic acid d...

Embodiment 2

[0035] A high-strength packaging flame-retardant paper and a preparation method thereof, the specific process of preparing the flame-retardant paper is as follows:

[0036] Under normal temperature and pressure, dissolve 3.4kg of polyvinyl alcohol fibers in 10kg of magnesium sulfate solution with a mass concentration of 13%, then prepare a sodium hydroxide solution with a mass concentration of 9%, and add magnesium sulfate solution at a rate of 3mL / min At the same time, stir vigorously at a speed of 1200r / min until the pH of the solution reaches 11.0-12.0, stop adding the sodium hydroxide solution, and continue stirring for 30 minutes to obtain magnesium hydroxide-polyvinyl alcohol fibers with a particle size of the dispersed phase of 30-50nm Composite sol; Install an electric stirrer, a thermometer and a reflux condenser with a water separator on the reaction vessel, and add 10kg of the resulting composite sol, then add 4.5kg of polyurethane slurry and 0.2kg of succinate, lite...

Embodiment 3

[0039] A high-strength packaging flame-retardant paper and a preparation method thereof, the specific process of preparing the flame-retardant paper is as follows:

[0040] Under normal temperature and pressure, dissolve 3.8kg of polyvinyl alcohol fibers in 10kg of magnesium sulfate solution with a mass concentration of 12%, then prepare a sodium hydroxide solution with a mass concentration of 8%, and add magnesium sulfate solution at a rate of 2mL / min At the same time, stir vigorously at a speed of 1200r / min until the pH of the solution reaches 11.0-12.0, stop adding the sodium hydroxide solution, and continue stirring for 40min to obtain magnesium hydroxide-polyvinyl alcohol fibers with a particle size of the dispersed phase of 30-50nm Composite sol; Install an electric stirrer, a thermometer and a reflux condenser with a water separator on the reaction vessel, and add 10kg of the resulting composite sol, then add 5kg polyurethane slurry and 0.3kg p-toluenesulfonic acid, lite...

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 belongs to the technical field of preparation of novel flame-retardant paper, and provides high-strength packaging flame-retardant paper and a preparing method thereof. The method includes mixing magnesium sulfate and polyvinyl alcohol fibers in water, then adding a sodium hydroxide solution into the mixture, reacting the mixture to obtain a magnesium hydroxide-polyvinyl alcohol fiber composite sol, then adding polyurethane into the composite sol to perform a grafting reaction to obtain a composite flame-retardant filler, finally mixing the composite flame-retardant filler with paper pulp, and manufacturing the high-strength packaging flame-retardant paper from the pulp mixture. Compared with traditional methods, magnesium hydroxide is adopted as the flame-retardant filler and has extremely good flame retardance, smoke suppression, acid resistance, a filling function, and other functions, the flame-retardant filler and paper fibers are fully combined, the paper has excellent toughness and mechanical properties, a whole preparing process is simple, low in energy consumption and low in equipment wear, and large-scale production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel flame-retardant paper, and in particular relates to a high-strength packaging flame-retardant paper and a preparation method thereof. Background technique [0002] Paper plays an important role in our social life. It is an important carrier for disseminating scientific and cultural knowledge, and it is also the main material and auxiliary material for various commodities and products. Paper and paper products are increasingly used in our lives and become an essential material, but their flammability greatly limits their applications. Many fields not only require such materials to have good strength, whiteness, thickness and air permeability, but also require them to have strong flame retardancy. Flame retardant treatment of paper and paper products is a powerful measure to prevent fires, reduce hidden dangers, and reduce losses. Therefore, the development and production of flame-ret...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/67D21H17/36D21H17/53D21H21/34D21H21/38D21H21/18D21H21/14D21H27/10C09C1/02C09C3/10
CPCC09C1/028C09C3/006C09C3/10D21H17/36D21H17/53D21H17/675D21H21/14D21H21/18D21H21/34D21H21/38D21H27/10
Inventor 陈庆司文彬
Owner 安徽景丰纸业有限公司
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