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

Evaluation method for yellowing risk after compounding of PVC artificial leather and PU sponge

A technology of artificial leather and sponge, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as yellowing

Active Publication Date: 2019-05-17
SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the problem of yellowing of PVC composite materials during actual production, transportation and storage, and combines the experience and insufficiency of the current amine resistance test, and proposes a new and systematic method for predicting and controlling the risk of yellowing after PVC composites Methods

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
  • Evaluation method for yellowing risk after compounding of PVC artificial leather and PU sponge
  • Evaluation method for yellowing risk after compounding of PVC artificial leather and PU sponge
  • Evaluation method for yellowing risk after compounding of PVC artificial leather and PU sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Take a light-colored PVC sample (STC) and store it in a standard environment for at least 24 hours according to ISO 554-23 / 50, and at least 3 pieces of PVC artificial leather 60*60mm, and then quickly and accurately weigh 500±10mg of 33% triethylene with an analytical balance A solution of diamine in polypropylene glycol (error range ± 2%) was placed in an 80 ml beaker. Cover the prepared PVC sample on the beaker with the PVC side facing up. Then quickly place the beaker with the sample in the middle of a 1000ml odor test glass bottle with a sealed cover, and close the sealed cover, such as figure 1 shown.

[0086] Put the odor test bottle with the test sample in a constant temperature oven at 50°C, take out the PVC sample after standing for 48 hours, wait for the sample to cool to room temperature in a standard environment, and let it stand for 1 hour at room temperature, then use Kone Minolta (KonicMinolta) CM-2500c colorimeter evaluates the color difference before ...

Embodiment 2

[0088] Take a light-colored PVC sample (CRC) and store it in a standard environment for at least 24 hours according to ISO 554-23 / 50, and at least 3 pieces of PVC artificial leather 60*60mm, and then quickly and accurately weigh 500±10mg of 33% triethylene with an analytical balance A solution of diamine in polypropylene glycol (error range ± 2%) was placed in an 80 ml beaker. Cover the prepared PVC sample on the beaker with the PVC side facing up. Then quickly place the beaker with the sample in the middle of a 1000ml odor test glass bottle with a sealed cap, and close the cap. Place the odor test bottle with the test sample in a constant temperature oven at 50°C, take out the PVC sample after standing for 48 hours, and wait for the sample to cool to room temperature in a standard environment. The test instrument, test method, and time are the same as in Example 1. The test results are: ΔL=-0.2, Δa=-0.2, Δb=0.9. The experimental result Δb≤1.0 shows that the risk of yellowin...

Embodiment 3

[0090] Take a light-colored PVC sample (STN) and store it in a standard environment for at least 24 hours according to ISO 554-23 / 50, and at least 3 pieces of PVC artificial leather 60*60mm, and then quickly and accurately weigh 500±10mg of 33% triethylene with an analytical balance A solution of diamine in polypropylene glycol (error range ± 2%) was placed in an 80 ml beaker. Cover the prepared PVC sample on the beaker with the PVC side facing up. Then quickly place the beaker with the sample in the middle of a 1000ml odor test glass bottle with a sealed cap, and close the cap. Put the odor test bottle with the test sample in a constant temperature oven at 50°C, take out the PVC sample after standing for 48 hours, wait for the sample to cool to room temperature in a standard environment, and then measure the values ​​of ΔL, Δa and Δb, test equipment and test The method, time, etc. are the same as in Example 1, and the test results are: ΔL=-0.6, Δa=-0.5, Δb=3.8. The experime...

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 discloses an evaluation method for yellowing risk after compounding of PVC artificial leather and PU sponge. The method comprises steps of putting a certain amount of amine catalyst source in a first container, covering an opening of the first container with base cloth of a PVC artificial leather sample downward, then putting the first container and the PVC artificial leather samplein a second container, and sealing the second container; putting the second container with the PVC artificial leather sample in a constant temperature device, standing for a certain time period and taking out the sample, cooling to room temperature away from light, standing for a certain time period at room temperature away from light, and then measuring Delta b of the sample before and after tests. The method is simple and reliable, is highly practical, eliminates impact of yellowing of PVC degradation caused by high temperature, and predicts and controls yellowing risk due to amine-caused PVC degradation at room temperature more accurately.

Description

technical field [0001] The invention belongs to the field of PVC artificial leather compounding, and in particular relates to a method for evaluating the risk of yellowing after compounding PVC artificial leather with PU sponge. Background technique [0002] In recent years, the light and bright colors of automotive interior materials have increased significantly. In the application of light-colored skin materials, people found that light-colored polyvinyl chloride (PVC) artificial leather and polyurethane (PU) sponge were combined by flame, and there was a phenomenon of yellowing during storage and transportation. This leads to obvious inconsistencies in the color matching of the interior materials in the vehicle. If the storage and transportation period is too long, it may also lead to irreversible yellowing, and eventually the vehicle will still have the risk of color mismatch after reaching the client. [0003] The residual amine in the PU foam material causes the degr...

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): G01N21/25
Inventor 袁爱春袁泓周震杰李茹
Owner SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
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