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Flame-retardant paper and preparation method thereof

A technology of flame retardants and flame retardant materials, applied in the field of papermaking, can solve problems such as flammability, irretrievable personal safety data, and economic losses

Pending Publication Date: 2020-09-01
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many materials now exist in the form of paper, and paper is extremely flammable, so when a fire occurs, it will cause great economic losses, personal safety and irretrievable data. Therefore, it is important to prepare flame-retardant paper. Significance

Method used

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  • Flame-retardant paper and preparation method thereof
  • Flame-retardant paper and preparation method thereof
  • Flame-retardant paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Chitosan was first dissolved with 3wt% acetic acid solution, then ammonium dihydrogen phosphate was added, and the molar ratio of chitosan to ammonium dihydrogen phosphate was 1:8; reflux reaction at 95°C for 1h, cooling to obtain a white precipitate; The precipitate is washed with deionized water to neutrality and dried to become a flame retardant.

[0028] Dissolve the flame retardant prepared in this example with 3wt% acetic acid solution to make a solution with a concentration of 4.0wt%, and evenly coat it on the filter paper with a coating amount of 24.52wt% and a coating thickness of about 0.003mm.

Embodiment 2

[0030] Flame retardant, the only difference from Example 1 is that the molar ratio of chitosan to ammonium dihydrogen phosphate is 1:6.

[0031] The flame retardant paper is similar to the preparation method of Example 1, the only difference is that the flame retardant prepared in this example is used.

Embodiment 3

[0033] Flame retardant, the difference from Example 1 is only: the molar ratio of chitosan to ammonium dihydrogen phosphate is 1:4.

[0034] The flame retardant paper is similar to the preparation method of Example 1, the only difference is that the flame retardant prepared in this example is used.

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Abstract

The invention relates to flame-retardant paper and a preparation method thereof, and belongs to the technical field of papermaking. The invention firstly provides a flame retardant which is prepared by reacting chitosan with ammonium dihydrogen phosphate at the reaction temperature of 95-100 DEG C; the molar ratio of the chitosan to ammonium dihydrogen phosphate is 1: (4-10). The invention also provides flame-retardant paper prepared from the flame retardant. The flame-retardant paper prepared by the preparation method disclosed by the invention not only has a good flame-retardant effect, butalso has relatively high strength; and the paper also has a good antibacterial property; and the material has the characteristics of good thermal stability, charring property and the like, and has anexcellent flame-retardant effect.

Description

technical field [0001] The invention relates to a flame-retardant paper and a preparation method thereof, belonging to the technical field of papermaking. Background technique [0002] In recent years, with the depletion of petroleum resources, people have gradually turned their attention to natural polymer materials. As we all know, cellulose is a natural polymer material with the most abundant natural resources in nature, and it has good biodegradability and biocompatibility. At present, the application of cellulose mainly includes paper, packaging boxes, film materials, reinforcing materials, etc., among which paper is one of the most widely used ways of cellulose. Many materials now exist in the form of paper, and paper is extremely flammable, so when a fire occurs, it will cause great economic losses, personal safety and irretrievable data. Therefore, it is important to prepare flame-retardant paper. Significance. [0003] The preparation method of flame-retardant pa...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H21/34D21H17/66D21H17/24
CPCD21H27/00D21H21/34D21H17/66D21H17/24
Inventor 吴敏黄勇张同玲
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI