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Method for preparing flame-retardant polyurethane synthetic leather

A synthetic leather and polyurethane technology, which is applied in the direction of flame-retardant fibers, chemical instruments and methods, and synthetic resin layered products, can solve the problems of low consumption, flame-retardant efficiency, toxic gas release, and excessive combustion smoke, and achieve Make up for poor compatibility and improve compatibility

Inactive Publication Date: 2017-01-04
广州益合康科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogenated flame retardants have the advantages of excellent stability, high decomposition temperature (above 300°C), less usage, and high flame retardant efficiency. The main disadvantages are that the decomposition products are highly toxic, burn more smoke, and have corrosive and toxic gases. released, so it is gradually being replaced by other halogen-free flame retardants in recent years

Method used

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  • Method for preparing flame-retardant polyurethane synthetic leather

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Effect test

Embodiment 1

[0025] (1) Preparation of modified magnesium hydroxide flame retardant: Add 13g of magnesium hydroxide to 80g of water and stir at a constant temperature of 90°C at a stirring speed of 2000r / min for 2h, add 16g of acrylic resin, ethylenediaminetetraacetic acid Dipotassium 1.3g, sodium citrate 1.5g, tetrahydroxypropyl ethylenediamine 1.6g, tetraethylammonium hydroxide 0.6g, tetraacetylethylenediamine 0.3g and tetraethylammonium bromide 0.1g, at 70°C Stir at constant temperature, the stirring speed is 1200r / min, and the stirring time is 1h, to obtain the modified magnesium hydroxide flame retardant;

[0026] (2) Preparation of compatibilizer: Take 13g of acrylamide in a three-necked flask, add 0.12g of dithiodibenzoic acid, take 2ml of lauroyl chloride, put it in a dry constant pressure dropping funnel, and add solvent n-hexane 2ml; the lauroyl chloride solution was added dropwise in a three-necked flask, and the rate of addition was controlled to be 5 seconds / drop. The dropping...

Embodiment 2

[0035] (1) Preparation of modified magnesium hydroxide flame retardant: Add 13g of magnesium hydroxide to 80g of water and stir at a constant temperature of 90°C at a stirring speed of 2000r / min for 2h, add 16g of acrylic resin, ethylenediaminetetraacetic acid Dipotassium 1.3g, sodium citrate 1.5g, tetrahydroxypropyl ethylenediamine 1.6g, tetraethylammonium hydroxide 0.6g, tetraacetylethylenediamine 0.3g and tetraethylammonium bromide 0.1g, at 70°C Stir at constant temperature, the stirring speed is 1200r / min, and the stirring time is 1h, to obtain the modified magnesium hydroxide flame retardant;

[0036] (2) Preparation of compatibilizer: Take 13g of acrylamide in a three-necked flask, add 0.12g of sodium methoxide, take 2ml of lauroyl chloride, put it in a dry constant pressure dropping funnel, and add 2ml of solvent n-hexane; The acid chloride solution was added dropwise into a three-necked flask, and the rate of addition was controlled to be 5 seconds / drop. The dropping p...

Embodiment 3

[0045] (1) Preparation of modified magnesium hydroxide flame retardant: Add 13g of magnesium hydroxide to 80g of water and stir at a constant temperature of 90°C at a stirring speed of 2000r / min for 2h, add 16g of acrylic resin, ethylenediaminetetraacetic acid Dipotassium 1.3g, sodium citrate 1.5g, tetrahydroxypropyl ethylenediamine 1.6g, tetraethylammonium hydroxide 0.6g, tetraacetylethylenediamine 0.3g and tetraethylammonium bromide 0.1g, at 70°C Stir at constant temperature, the stirring speed is 1200r / min, and the stirring time is 1h, to obtain the modified magnesium hydroxide flame retardant;

[0046] (2) Preparation of compatibilizer: Take 13g of acrylamide in a three-necked flask, add 0.12g of ammonium persulfate, take 2ml of lauroyl chloride, put it in a dry constant pressure dropping funnel, and add 2ml of solvent n-hexane; The lauroyl chloride solution was added dropwise in the three-necked flask, and the rate of addition was controlled to be 5 seconds / drop. The drop...

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Abstract

The invention discloses a method for preparing flame-retardant polyurethane synthetic leather. The method comprises the following steps: extruding a thermoplastic polyurethane and styrene-butadiene-styrene segmented copolymer, a styrene-ethylene-butene-styrene segmented copolymer, a polyamide type thermoplastic elastomer, colorant and a substance A by using an extruder at 90-370 DEG C so as to prepare a polyurethane film which is 0.8mm in thickness; before the modified polyurethane film is cooled, performing composite pressing on the polyurethane film and a piece of flame-retardant base cloth by using an extrusion roller at the pressure of 1.0Mpa, embossing by using a roller with textures at the pressure of 0.2Mpa, cooling so as to prepare primary synthetic leather, performing surface treatment on the prepared primary synthetic leather in a water-soluble silicon oil solution of 90 DEG C, and drying in an oven of 110 DEG C, thereby obtaining the flame-retardant polyurethane synthetic leather. The flame retardancy of the prepared flame-retardant polyurethane synthetic leather can be of a grade of good or higher.

Description

technical field [0001] The invention relates to a preparation method of polyurethane synthetic leather, in particular to a preparation method of flame-retardant polyurethane synthetic leather. Background technique [0002] After years of development, polyurethane synthetic leather has been widely used in industrial, civil, military and other fields due to its good appearance and feel, air and moisture permeability, wear resistance and solvent resistance, high strength, and wide application. Life is connected. Polyurethane synthetic leather is mainly made of polyurethane resin solution and non-woven fabrics, woven fabrics, knitted fabrics and other cloth bases through dry and wet processing. This type of traditional polyurethane synthetic leather does not have flame retardant properties, and ordinary polymer materials are easy to burn. As a kind of polymer material, it brings comfort and convenience to people's production and life, but it also poses a great potential safety ...

Claims

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Application Information

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IPC IPC(8): B32B37/10B32B37/15B32B38/18B32B27/12B32B27/18B32B27/40D06M11/44D06M15/285D06M13/432
CPCB32B5/024B32B27/12B32B27/18B32B27/20B32B27/40B32B37/10B32B37/153B32B38/18B32B2250/02B32B2307/3065D06M11/44D06M13/207D06M13/342D06M13/368D06M13/432D06M13/463D06M15/263D06M15/285D06M2200/30
Inventor 段宝荣翟智宇
Owner 广州益合康科技材料有限公司
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