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Low energy consumption ecological leatheroid preparation method

A manufacturing method and artificial leather technology, which is applied in the field of synthetic leather manufacturing, can solve the problems of high energy consumption and achieve the effects of low atomization value and low VOC residual rate

Active Publication Date: 2014-03-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method eliminates the discharge pollution and residues of toxic plasticizers and solvents from the source, overcomes the persistent problems of high energy consumption and high pollution in the traditional PVC artificial leather manufacturing process, reduces product production costs, and improves the ecological level of finished leather and international market competitiveness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Manufacture of luggage leather

[0039] (1) Preparation of PVC surface layer slurry, foam layer slurry, water-based adhesive, and water-based surface treatment agent:

[0040] (a) Preparation of PVC surface layer slurry

[0041] Mix and stir the emulsion method PVC resin, epoxidized soybean oil with an epoxy value of 6.0%, epoxy fatty acid methyl ester with an epoxy value of 5.0%, white toner, and light calcium in a certain proportion, and then use a three-roll mill Grinding and filtering to obtain surface layer slurry;

[0042] (b) Preparation of PVC foam layer slurry

[0043] First, mix the suspension method PVC resin and a small amount of epoxy fatty acid methyl ester (cold, epoxy value 5.0%) in proportion, and then heat the epoxy fatty acid methyl ester (epoxy value 5.0%) for the paste to 160°C , add to the cold mixture that is evenly stirred, and stir rapidly at the same time. After cooling to room temperature, add zinc oxide modified AC (foaming temp...

Embodiment 2

[0061] Example 2 Manufacture of automotive interior leather

[0062] (1) Preparation of PVC surface layer slurry, foam layer slurry, water-based adhesive, and water-based surface treatment agent:

[0063] (a) Preparation of PVC surface layer slurry

[0064] Mix and stir the emulsion method PVC resin, polycaprolactone-polycarbonate mixed plasticizer, Ca-Zn composite heat stabilizer, light brown powder, and light calcium in a certain proportion, then grind with a three-roll mill, and filter Prepare the surface layer slurry;

[0065] (b) Preparation of PVC foam layer slurry (parts by weight)

[0066] First, mix the suspension method PVC resin and a small amount of polycaprolactone-polycarbonate mixed plasticizer (cold) evenly in proportion, and then heat the polycaprolactone-polycarbonate mixed plasticizer for paste to 170°C. Add it into the well-stirred cold mixture, and stir rapidly at the same time. After cooling to room temperature, add G-type potassium azoformamide form...

Embodiment 3

[0084] Example 3 Production of upholstery leather

[0085] (1) Preparation of PVC surface layer slurry, foam layer slurry, water-based adhesive, and water-based surface treatment agent:

[0086] (a) Preparation of PVC surface layer slurry

[0087] The emulsion method PVC resin, citrate plasticizer, cyclohexane diester plasticizer, magnesium stearate, green toner, SiO 2 Mix and stir according to a certain ratio, then grind with a three-roll mill, and filter to obtain the surface layer slurry;

[0088] (b) Preparation of PVC foam layer slurry

[0089] First, mix the suspension method PVC resin and a small amount of citric acid ester plasticizer (cold) evenly in proportion, then heat the cyclohexane diester plasticizer for the paste to 165°C, and add it to the cold mixture that is evenly stirred , and stir rapidly at the same time. After cooling to room temperature, add 4,4'-oxobisbenzenesulfonyl hydrazide, magnesium stearate, green toner, SiO 2 mixing, stirring, and grindi...

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Abstract

The invention discloses a low energy consumption ecological leatheroid preparation method. The preparation method adopts an environmental-friendly plasticizer to replace a phthalate noxious plasticizer to prepare a PVC surface layer and a foam layer, utilizes a low temperature foaming agent with a foaming temperature ranging from 160 DEG C to 190 DEG C to replace the conventional azodicarbonamide (AC) high temperature foaming agent to foam on the foaming layer, and finally uses an environmental-friendly aqueous resin as a base cloth glue and a PVC surface treating agent, as a result, the low energy consumption ecological leatheroid preparation method is obtained. The discharging and residue of the noxious plasticizer and an organic solvent are avoided by using the environmental-friendly plasticizer, as a result, the ecological grade of the finished leatheroid is improved; the application of the low temperature foaming agent can remarkably lower the energy consumption caused by the leatheroid preparation, the production cost is saved, meanwhile, the foam holes are fine and uniform, destructive air holes are avoided, and the color is fleet and weak. By adopting the process, the prepared leatheroid has the characteristics that the cost is low and the content of the volatile organic substance is lower than 5 mg / kg, satisfies quality requirement of EU ecological leatheroid, and remarkably improves the international market competitiveness and the environmental protection grade of the leatheroid.

Description

technical field [0001] The invention belongs to the field of synthetic leather manufacture, and specifically refers to a low energy consumption ecological artificial leather manufacturing method. Background technique [0002] my country is the largest producer and consumer of imitation leather in the world. In 2012, there were more than 3,000 imitation leather-related enterprises (more than 300 enterprises above designated size), 1,575 production lines, and an output of 7.8 billion square meters, accounting for 73% of the world's total output. As the first generation of imitation leather products, polyvinyl chloride (PVC) artificial leather has the characteristics of bright color, high strength, wear resistance, folding resistance, acid and alkali resistance, low cost and convenient processing. It has been widely used in bags , furniture, automotive interiors, floors, wallpapers and other fields. According to statistics, from 1997 to 2012, the production scale of PVC arti...

Claims

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Application Information

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IPC IPC(8): D06N3/08B32B27/30B32B27/40C08L27/06C08J9/04C08J9/10
Inventor 陈意范浩军彭必雨刘世勇李成祥石碧
Owner SICHUAN UNIV
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