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Artificial leather resistant to high and low temperature circulation and preparation method thereof

A high and low temperature resistant, artificial leather technology, applied in textiles and papermaking, fiber treatment, carbon fiber, etc., can solve the problems of reducing the service life of leather, peeling appearance, peeling, etc., and achieve the effect of improving bond strength

Pending Publication Date: 2022-03-18
WUXI MANYOULI NEW COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of PVC artificial leather is that the additives of PVC, such as plasticizers, etc., are not resistant to high temperature and low temperature, especially in occasions that need to be exposed to the outdoors for a long time. Below 0℃), it will seriously affect the function and service life of leather. High temperature will cause PVC artificial leather to soften, release toxic substances such as aldehydes and benzene that are harmful to human body, and produce a strong pungent taste; low temperature will lead to PVC artificial leather. Artificial leather will be stiff, thus losing its proper elasticity, torsion resistance and bending properties; and during long-term friction, the coating will fade, peel, or even fall off, which will cause poor appearance, reduce the service life of the leather, and affect the quality of the leather. physical properties

Method used

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  • Artificial leather resistant to high and low temperature circulation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing artificial leather resistant to high and low temperature cycles, comprising the following steps:

[0020] Step 1: Wash the bamboo fiber fabric with water, wash with alcohol, dry, pre-oxidize at 200°C for 2 hours, then raise the temperature at 5°C / min to 800°C for 120 minutes, calcinate, take it out, wash with water, wash with alcohol, and dry , to obtain flexible carbon fiber;

[0021] Step 2: Add 40 parts by mass of dimethylformamide, 3 parts of bis(2-propylheptyl) adipate, 35 parts of polyester polyol, and 3 parts of ethylene glycol into the reactor, stir until mixed Uniform;

[0022] Step 3: placing the flexible carbon fiber obtained in step 1 into the mixture in step 2, and adding ethanol;

[0023] Step 4: Add 20 parts of isocyanate prepolymer and 0.02 part of catalyst to the mixture in step 3, raise the temperature to 45°C and stir to react;

[0024] Step 5: After the impregnated flexible carbon fiber obtained in step 4 is fully dried unde...

Embodiment 2

[0026] A method for preparing artificial leather resistant to high and low temperature cycles, comprising the following steps:

[0027] Step 1: Wash the bamboo fiber fabric with water, then wash it with alcohol, dry it, pre-oxidize it at 200°C for 2 hours, then heat it at 5°C / min to 1000°C for 120 minutes, calcinate it, take it out, wash it with water, wash it with alcohol, and then dry it , to obtain flexible carbon fiber;

[0028] Step 2: Stir 50 parts by mass of dimethylformamide, 5 parts of bis(2-propylheptyl adipate), 55 parts of polyester polyol, and 5 parts of ethylene glycol until uniformly mixed;

[0029] Step 3: placing the flexible carbon fiber obtained in step 1 into the mixture in step 2, and adding ethanol;

[0030] Step 4: Add 45 parts of isocyanate prepolymer and 0.05 part of catalyst to the mixture in step 3, raise the temperature to 45°C and stir to react;

[0031] Step 5: After the impregnated flexible carbon fiber obtained in step 4 is fully dried under n...

Embodiment 3

[0033] A method for preparing artificial leather resistant to high and low temperature cycles, comprising the following steps:

[0034] Step 1: Wash the bamboo fiber fabric with water, wash with alcohol, dry, pre-oxidize at 200°C for 2 hours, then heat at 600°C at 5°C / min for 120 minutes, calcinate, take it out, wash with water, wash with alcohol, and dry , to obtain flexible carbon fiber;

[0035] Step 2: Stir 45 parts by mass of dimethylformamide, 4 parts of bis(2-propylheptyl adipate), 35 parts of polyester polyol, and 3 parts of ethylene glycol until they are evenly mixed;

[0036] Step 3: placing the flexible carbon fiber obtained in step 1 into the mixture in step 2, and adding ethanol;

[0037] Step 4: Add 10 parts of isocyanate prepolymer and 0.02 parts of catalyst to the mixture in step 3, raise the temperature to 45°C and stir to react;

[0038] Step 5: After the impregnated flexible carbon fiber obtained in step 4 is fully dried under normal pressure, it is cracke...

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Abstract

The invention discloses artificial leather resistant to high and low temperature circulation and a preparation method of the artificial leather, and belongs to the field of artificial leather preparation. The resin layer is prepared from the following components in parts by mass: 35 to 55 parts of polyester polyol, 10 to 50 parts of isocyanate prepolymer, 3 to 5 parts of bis (2-propylheptyl) adipate, 0.01 to 0.05 part of catalyst, 3 to 5 parts of ethylene glycol, 40 to 50 parts of dimethylformamide and 0 to 5 parts of chitosan. The polyester polyol is adopted as a raw material to prepare artificial leather resin, the prepared product has the characteristics of high temperature resistance and low temperature resistance at the same time, di (2-propylheptyl) adipate is added to further improve the high temperature resistance and low temperature resistance of the artificial leather, and chitosan is utilized to improve the bonding strength and volume density of the product, so that the resin and the flexible carbon fibers are combined more firmly, and the service life of the artificial leather is prolonged. Meanwhile, the prepared product is more environment-friendly.

Description

technical field [0001] The invention belongs to the field of artificial leather preparation, in particular to an artificial leather resistant to high and low temperature cycles and a preparation method thereof. Background technique [0002] Artificial leather has a wide variety of designs and colors, without the defects of natural leather, and is easier to mechanize and produce with high efficiency. Polyvinyl chloride artificial leather (PVC artificial leather) is a kind of leather-like plastic product obtained by coating or pasting a mixture of PVC resin, plasticizer, stabilizer, etc. on the base cloth. PVC artificial leather is easy to process and low in cost, and can be used for automotive interiors, seat covers, bags, furniture, etc. The biggest disadvantage of PVC artificial leather is that the additives of PVC, such as plasticizers, etc., are not resistant to high temperature and low temperature. Below 0℃), it will seriously affect the function and service life of le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/572D06M13/224D06M15/03D06M101/40
CPCD06M15/572D06M13/224D06M15/03D06M2101/40
Inventor 宗政宇蒋泽
Owner WUXI MANYOULI NEW COMPOSITE MATERIALS
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