Water-proof air-permeable polyurethane synthetic leather and preparation method thereof

A waterproof and breathable polyurethane technology, applied in the field of synthetic leather, can solve problems such as sweat not evaporating, user discomfort, and synthetic leather's breathability can not achieve good results, so as to achieve good waterproof function and enhanced breathability

Inactive Publication Date: 2011-03-02
张瑜
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chinese Patent No. 98100908.5 discloses a method for producing polyurethane artificial leather, which discloses a polyurethane synthetic leather with good mechanical properties, but the air permeability of the above synthetic leather cannot reach a good effect
If the artificial leather of the above invention is used to make clothes or shoes, the sweat will not evaporate, which will cause great discomfort to the user.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A waterproof and breathable polyurethane synthetic leather, consisting of the following components: 60wt% polyurethane particles, 3wt% phthalate, 1wt% azobisisobutyronitrile, 8wt% polyacrylate, 15wt% calcium carbonate, 100 mesh Sodium chloride 12wt%, colorant 1wt%.

[0022] The manufacture method of waterproof breathable polyurethane synthetic leather comprises the following steps:

[0023] (1) Put the prepared materials into the mixer and mix evenly;

[0024] (2) put into internal mixer, carry out heating up plasticizing;

[0025] (3) Put it into a two-roller machine, further gelatinize, homogenize, and send to a filter to filter and extrude to remove impurities;

[0026] (4) sent to the calender, pulled out into adhesive tape;

[0027] (5) Send it to the laminating machine, and laminate it with the base fabric and fabric under heating and pressure;

[0028] (6) Send it to a foaming machine to make azobisisobutyronitrile decompose and foam at high temperature, then...

Embodiment 2

[0031] A waterproof and breathable polyurethane synthetic leather is characterized in that it consists of the following components: 67wt% of polyurethane particles, 4wt% of phthalates, 3wt% of azodimethylamide, 4wt% of polymethacrylates, and 10wt% of calcium carbonate %, 200 mesh sodium chloride 10wt%, colorant 2wt%.

[0032] The manufacture method of waterproof breathable polyurethane synthetic leather comprises the following steps:

[0033] (1) Put the prepared materials into the mixer and mix evenly;

[0034] (2) put into internal mixer, carry out heating up plasticizing;

[0035] (3) Put it into a two-roller machine, further gelatinize, homogenize, and send to a filter to filter and extrude to remove impurities;

[0036] (4) sent to the calender, pulled out into adhesive tape;

[0037] (5) Send it to the laminating machine, and laminate it with the base fabric and fabric under heating and pressure;

[0038] (6) Send it to a foaming machine to decompose and foam the azo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to water-proof air-permeable polyurethane synthetic leather in the technical field of synthetic leather, comprising the following components by weight percent: 60-70% of polyurethane particles, 3-7% of lubricant, 1-3% of foaming agent, 4-8% of reconcile resin, 10-15% of calcium carbonate, 10-15% of sodium chloride the grain diameter of which is 100-200 meshes, and 1-3% of pigment. The preparation method of the invention comprises the following steps: feeding the materials into a blender, and evenly mixing the raw materials; placing into a banbury mixer, heating, plastifying; placing into a two-roller machine, gelling, homogenizing, filtering by a filter and extruding; placing into a calender, and pulling out into rubber fabric; placing into a laminator, and fitting with base fabric and shell fabric at the condition of heating and pressurizing; and placing into a foaming machine, decomposing and foaming at the high temperature, cooking in water for 10-24 hours at the temperature of 50-60 DEG C, changing water for 2-5 times, knurling and postprocessing. The beneficial effects of the invention are as follows: sodium chloride is added and then removed in preparation process, more extremely fine holes are generated, and the air permeability of the synthetic leather of the invention is enhanced.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, in particular to a waterproof and breathable polyurethane synthetic leather. Background technique [0002] Chinese patent No. is the manufacture method of the polyurethane artificial leather of 98100908.5, discloses a kind of polyurethane synthetic leather, has good mechanical property, but the breathability of above-mentioned synthetic leather can't reach good effect. If the artificial leather of the above invention is used to make clothes or shoes, the sweat cannot evaporate, causing very great discomfort to the user. Contents of the invention [0003] In order to overcome the deficiencies in the above technical aspects, the present invention provides a polyurethane artificial leather with good flexural strength, hardness, wear resistance and moisture resistance, and good waterproof and breathable performance. [0004] The present invention is achieved in the following manner. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B27/18
Inventor 张瑜
Owner 张瑜
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap