Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Waterproof PU leather and preparation method thereof

A leather and hydrophobic agent technology, applied in the field of artificial leather, can solve the problems of poor waterproof effect of PU leather, achieve uniform waterproof effect, ensure waterproof performance, and reduce the possibility of effect

Pending Publication Date: 2022-03-04
KUSN ACHILLES ARTIFICIAL LEATHER
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defect that the uneven distribution of the hydrophobic agent in the PU leather leads to the poor waterproof effect of the PU leather, the application provides a waterproof PU leather and its preparation method

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Waterproof PU leather and preparation method thereof
  • Waterproof PU leather and preparation method thereof
  • Waterproof PU leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0044] Take 1 kg of methyltriethoxysilane as the modification solution 1.

preparation example 2-7

[0046] Take methyltriethoxysilane, pentaerythritol stearate, silane coupling agent, and dimethylolpropionic acid respectively, the specific quality of which is shown in Table 1, stir and mix, and prepare modification liquid 2-7.

[0047] Components of modifying solution in preparation example 2-7 of table 1

[0048]

[0049] Hydrophobic agent preparation example

preparation example 8-10

[0051] Weigh anhydrous ethanol, deionized water, nano-silica and modified solution 1 respectively, see Table 2 for the specific quality, first stir and mix nano-silica, anhydrous ethanol, and nano-silica at 20kHz for 30s , stand still for 30s, circulate 3 times to obtain an intermediate solution, then add modified solution 1 to the intermediate solution, and continue to stir to obtain an intermediate product, and use absolute ethanol to centrifuge and wash the intermediate product, pour the supernatant, and keep the lower layer of precipitation , and place the precipitate in an oven for drying to obtain modified nano silicon dioxide 1-3 as hydrophobic agent 1-3.

[0052] Each component ratio in table 2 preparation example 8-10

[0053]

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 relates to the field of synthetic leather, and particularly discloses waterproof PU leather and a preparation method thereof. The waterproof PU leather comprises a base cloth layer and a surface layer which are sequentially arranged from inside to outside, the surface layer comprises the following substances in parts by weight: 80-100 parts of waterborne polyurethane, 1-3 parts of a stabilizer, 1-2 parts of a foaming agent, 5-25 parts of a water repellent agent and 3-5 parts of filler, the water repellent agent comprises nano silicon dioxide treated by a modification liquid, and the modification liquid comprises methyltriethoxysilane; the preparation method comprises the following steps: S1, preparing raw materials; s2, foaming treatment; and S3, leather preparation. The waterproof PU leather provided by the invention can be used in the fields of clothing, automotive trim, interior decoration and the like, and has the advantages of uniform waterproof effect, better water vapor permeability and low possibility of leaving water spots after water splashing.

Description

technical field [0001] The application relates to the field of artificial leather, in particular to a waterproof PU leather and a preparation method thereof. Background technique [0002] PU leather is a kind of skin with polyurethane components, which is usually used in bags, clothing, shoes, vehicle interiors, home decoration and other fields. Due to the good hydrophilicity of polyurethane, after water contacts with PU leather, it can permeate and store in PU leather, which not only leaves water stains on PU leather, but also causes PU leather to hydrolyze, shortening the service life of PU leather. [0003] In order to prolong the service life of PU leather, a hydrophobic agent is added in the preparation of PU leather on the market, and then the PU leather produced has a hydrophobic effect, so that the PU leather not only has a better water vapor permeability effect, but also does not easily allow external moisture to penetrate into the PU leather. PU leather, thereby p...

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
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0063D06N3/0059D06N3/0061D06N2211/28D06N2209/142D06N2209/123
Inventor 赵建明徐青徐雪明
Owner KUSN ACHILLES ARTIFICIAL LEATHER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com