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Flame retardance leather preparation method

A flame retardant and leather technology, applied in the field of preparation of flax polyester fine denier socks, can solve the problems of hard leather, difficult to dissolve in water, difficult to meet the development needs of leather flame retardant technology, etc., to achieve good flame retardant effect, The effect of simple preparation method

Inactive Publication Date: 2018-10-16
海宁玖洲家具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, fire-resistant and flame-retardant leather has become more and more popular due to its excellent characteristics, but there are still many shortcomings in the existing domestic flame retardants, such as poor compatibility with skin collagen, which makes the leather feel It is hard and difficult to dissolve in water, and most of the leather crafting processes are completed in a liquid environment, so it is difficult to meet the development needs of today's leather flame retardant technology

Method used

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Effect test

Embodiment Construction

[0013] The technical solution of the present invention is described in detail below. The embodiment of the present invention is only for illustrating a specific structure, and the scale of the structure is not limited by the embodiment.

[0014] A preparation method of flame-retardant leather,

[0015] Step 1: Leather degreasing, add 0.1-0.2% formic acid and 0.5% degreasing agent to the container containing the leather, keep the temperature at 40-45°C, the liquid ratio is 200%, at this time the pH value of the solution is controlled at 3.0-4.0 , stirred for 40-50 minutes; washed with water, at least twice;

[0016] Step 2: Retanning, keep the water temperature in the solution at 35-40°C, the liquid ratio is 200%, add 3-6% flame retardant, the pH is 4.0-5.0, stir for 2 hours; then add 0.3% tartaric acid, 0.15% MgCl in sequence 2 , 1% HCOONa, stirred for 30 minutes, then added sodium bicarbonate, adjusted the pH value to 5.5-6.0, washed with water after 10 minutes;

[0017] F...

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Abstract

The invention discloses a flame retardance leather preparation method. According to the flame retardance leather preparation method, leather is degreased, is subjected to retanning and fat liquoring and is dried, wherein a flame retardant is added in a leather retanning process. The preparation method of the flame retardant comprises the following steps of: putting a flask filled with dimethyl phosphite in an oil bath pan, heating to 110 DEG C, stirring, then adding ammonium polyphosphate, enabling the ammonium polyphosphate to uniformly mixed, stirring for 3 hours by using a stirrer, adding glycerin, continuously stirring and heating for 2 hours to obtain the flame retardant. The flame retardance leather preparation method is simple; a certain amount of flame retardant is added in a leather preparation technology and does not affect the plumpness and softness of the leather; and the leather has a very good flame retardance effect through the oxygen index testing, smoke density testingand char forming characteristic testing.

Description

technical field [0001] The invention relates to a method for manufacturing socks, in particular to a method for preparing linen polyester fine denier socks. Background technique [0002] Flame retardant refers to reducing the flammability of the material, slowing down the spread of the flame, and when the flame is removed, it can quickly self-extinguish and will not re-ignite. From the analysis of the combustion process, the purpose of flame retardancy is to isolate the three elements necessary for combustion: heat source, combustibles, and oxygen. Leather flame retardant is mainly divided into 4 ways: gas phase flame retardant, condensed phase flame retardant, covering effect and heat absorption effect. After years of development of flame retardant technology, a wide variety of flame retardants have been developed. According to different flame retardant substrates, flame retardants can be divided into additive type and reactive type; according to chemical composition, fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/00
CPCC14C9/00
Inventor 李家毅
Owner 海宁玖洲家具有限公司