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Bio-based cyclodextrin inclusion ferrocene modified hydrotalcite/zanthoxylum bungeanum seed oil environment-friendly flame-retardant leather fatting agent and preparation method thereof

A technology for combining ferrocene-modified hydrotalcite and leather fatliquor, which is applied in the directions of small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, leather impregnation, etc. It can solve problems such as pollution, and achieve the effect of improving flame retardant performance, improving dispersion and improving compatibility.

Active Publication Date: 2021-01-12
SHAANXI UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

[0006] The object of the present invention is to provide a bio-based cyclodextrin inclusion ferrocene modified hydrotalcite / pepper seed oil environment-friendly flame-retardant leather fatliquoring agent and its preparation method, which overcomes the traditional flame-retardant type in the prior art. To solve the pollution problem caused by leather fatliquor, the invention effectively improves the dispersion of hydrotalcite-like through the intercalation effect of cyclodextrin inclusion ferrocene, and can further improve the leather after fatliquor through the synergistic flame retardancy of composite materials. flame retardant performance

Method used

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  • Bio-based cyclodextrin inclusion ferrocene modified hydrotalcite/zanthoxylum bungeanum seed oil environment-friendly flame-retardant leather fatting agent and preparation method thereof
  • Bio-based cyclodextrin inclusion ferrocene modified hydrotalcite/zanthoxylum bungeanum seed oil environment-friendly flame-retardant leather fatting agent and preparation method thereof

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preparation example Construction

[0022] The invention relates to a bio-based cyclodextrin inclusion ferrocene modified hydrotalcite / Zanthoxylum bungeanum seed oil environment-friendly flame-retardant leather fatliquoring agent, which is disclosed in the patent "Succinate sulfonated Zanthoxylum bungeanum oil / nano-hydrotalcite composite flame retardant On the basis of "flammable fatliquor and its preparation method" (patent number: 201711075935.6), a bio-based cyclodextrin inclusion ferrocene modified hydrotalcite with synergistic flame retardancy was introduced into the fatliquor system. Using cyclodextrin from bio-based sources and ferrocene with excellent smoke suppression properties to modify hydrotalcite-like, further improve the dispersibility of hydrotalcite-like, and modify hydrotalcite-like based on cyclodextrin inclusion ferrocene The positive and synergistic flame retardant effect of this method was used to prepare an environmentally friendly flame retardant leather fatliquoring agent.

[0023] The p...

Embodiment 1

[0029] Step 1: Dissolve 4 parts of sulfonated β-cyclodextrin in a mixture of 40 ml of methanol and water, add 4.9 parts of ferrocene under stirring, conduct an adsorption reaction for 24 hours, and filter to obtain filtrate A.

[0030] Step 2: Weigh 4.6 parts of Zn(NO 3 ) 2 ·6H 2 O, 2.3 parts Al(NO 3 ) 3 9H 2 O was dissolved in 24 parts of deionized water to prepare a metal salt solution. Under the protection of nitrogen at 80°C, the metal salt solution was dropped into A under stirring, and the pH of the system was adjusted to a constant value of 10 with NaOH solution. After the addition was completed, stir at a constant temperature After two hours, crystallize at room temperature for 8 hours, wash and centrifuge with deionized water until the supernatant is neutral, and freeze-dry the filter cake to obtain a cyclodextrin inclusion ferrocene-modified hydrotalcite-like composite material.

[0031] Step 3: Bio-based cyclodextrin inclusion ferrocene-modified hydrotalcites w...

Embodiment 2

[0033] Step 1: Dissolve 5 parts of sulfonated β-cyclodextrin in a mixture of 50 ml of methanol and water, add 6.1 parts of ferrocene under stirring, conduct adsorption reaction for 24 hours, and filter to obtain filtrate A.

[0034] Step 2: Weigh 5.6 parts of Zn(NO 3 ) 2 ·6H 2 O, 2.6 parts Al(NO 3 ) 3 9H 2 O was dissolved in 28 parts of deionized water to prepare a metal salt solution. Under the protection of nitrogen at 80°C, the metal salt solution was dropped into A under stirring, and the pH of the system was adjusted to a constant value of 10 with NaOH solution. After two hours, crystallize at room temperature for 8 hours, wash and centrifuge with deionized water until the supernatant is neutral, and freeze-dry the filter cake to obtain a cyclodextrin inclusion ferrocene-modified hydrotalcite-like composite material.

[0035] Step 3: Bio-based cyclodextrin inclusion ferrocene-modified hydrotalcites with synergistic flame retardancy are introduced into the fatliquorin...

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Abstract

The invention relates to a bio-based cyclodextrin inclusion ferrocene modified hydrotalcite / zanthoxylum bungeanum seed oil environment-friendly flame-retardant leather fatting agent and a preparationmethod thereof. The problem of pollution caused by a traditional flame-retardant leather fatting agent in the prior art is solved. The agent is prepared from the following raw materials in parts by mass: 3-10 parts of sulfonated beta cyclodextrin, 40-80ml of mixed solution of methanol and water, 4-10 parts of ferrocene, 4-10 parts of Zn(NO3)2*6H2O, 2-5 parts of Al(NO3)3*9H2O, 20-50 parts of deionized water, a proper amount of NaOH, 30-100 parts of pepper seed oil, 98% concentrated sulfuric acid of 2% by mass of pepper seed oil, 1.13-3.7 parts of glycerol, 1.13-3.7 parts of methanol, 10.62-35.40 parts of maleic anhydride, and 10.32-34.40 parts of sodium pyrosulfite solution.

Description

Technical field: [0001] The invention belongs to the field of preparation of fatliquor for leather, and relates to a bio-based cyclodextrin-modified hydrotalcite-like / pepper seed oil-friendly flame-retardant leather fatliquor and a preparation method. Background technique: [0002] In recent years, with the improvement of people's living standards, the amount of leather products is increasing rapidly, but at the same time, the fire problems caused by the use of leather products are also increasing. How to solve the flame retardant problem of leather to meet the market demand for high-performance leather is one of the key directions for the development of functional leather. In the process of leather processing, fatliquoring is an essential process, but since the raw materials used in the synthesis of fatliquoring agents are all flammable oils, after fatliquoring, some oil will migrate to the leather surface due to unstable combination and directly become fuel , causing the ...

Claims

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Application Information

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IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 吕斌雒康左童高党鸽马建中
Owner SHAANXI UNIV OF SCI & TECH
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