Supercharge Your Innovation With Domain-Expert AI Agents!

Heat-resistant degradable plastic and preparation method thereof

A technology for degrading plastics and heat resistance, which is applied in the field of heat-resistant degradable plastics and its preparation, and can solve distortion, inorganic filler dispersion, poor compatibility, mechanical properties and heat resistance, and poor heat resistance of degradable plastic products and other problems, to achieve the effect of reducing internal stress, reducing interface effects and improving mechanical properties

Inactive Publication Date: 2021-06-04
安徽才众新材料科技有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the degradable plastic products developed have the problem of poor heat resistance, and are prone to distortion and deformation when exposed to high temperatures.
In order to improve the heat resistance of degradable plastics, inorganic fillers such as montmorillonite, kaolin, and carbon nanotubes are usually added to the formula to improve their thermal stability and melt processing performance, but the overall effect is not ideal. Dispersion, poor compatibility, mechanical properties and heat resistance still need to be improved

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
  • Heat-resistant degradable plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] 1. Preparation of modified nano-silica particles

[0017] The modified silica nanoparticles are chitosan modified silica nanoparticles. Because a large number of hydrogen bonds can be formed between chitosan and silicon dioxide, composite nanoparticles with a porous structure on the surface can be made by using the reverse microemulsion method. The specific preparation example is as follows:

Embodiment 1

[0019] The present embodiment provides a kind of preparation method of modified chitosan modified nano silicon dioxide particle, and concrete steps are as follows:

[0020] (1) Mix 800 L of cyclohexane, 200 L of surfactant polyethylene glycol octyl phenyl ether (Triton X-100) and 200 L of co-surfactant n-hexanol, add 50 L of double distilled water, stir vigorously for 5 minutes, and then oil Water-encapsulated microemulsions;

[0021] (2) Add chitosan solution (5%, 100L) to the above-mentioned microemulsion, add sodium hydroxide to adjust the pH value to neutrality, then add tetraethyl orthosilicate 100kg, ammoniacal liquor 20kg in the microemulsion successively, After stirring evenly, continue to stir and react for 24;

[0022] (3) After the reaction in step (2) is completed, add 500L of acetone for demulsification. After demulsification, nanoparticles are separated from the microemulsion. After centrifugation, the obtained particles are washed with 100L of acetone, 100L of ...

Embodiment 2

[0025] This embodiment provides a heat-resistant and degradable plastic, which includes the following composition: 42 parts of polyvinyl alcohol, 18 parts of polydibutyl succinate, 30 parts of corn starch, 2 parts of urea, 25 parts of modified silica nanoparticles 3 parts, epoxy resin 3 parts;

[0026] The preparation method of the heat-resistant and degradable plastics comprises weighing 250 g of modified silicon dioxide nanoparticles, 420 g of polyvinyl alcohol, 180 g of poly(dibutyl succinate), 300 g of corn starch, 20 g of urea, and 30 g of epoxy resin, and then adding Fully mix and react in a high-speed mixer, and keep the mixing temperature at 85°C. After reacting for 2 hours, extrude and granulate through a twin-screw extruder to obtain degradable plastic masterbatches.

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 a heat-resistant degradable plastic and a preparation method thereof, and the heat-resistant degradable plastic comprises the following components in parts by weight: 40-60 parts of polyvinyl alcohol, 15-30 parts of poly (dibutyl succinate), 30-50 parts of natural starch, 2-6 parts of a plasticizer, 24-37 parts of modified silicon dioxide nanoparticles, and 3-5 parts of epoxy resin. Herein, the modified silicon dioxide nanoparticles are chitosan modified silicon dioxide nanoparticles, and due to the fact that a large amount of hydrogen-bond interaction can be formed between chitosan and silicon dioxide, composite nanoparticles with porous structures on the surfaces can be prepared through a reverse microemulsion method. According to the invention, the composite nanoparticles have good biocompatibility and can be better compatible with natural starch and polyvinyl alcohol, so that the composite nanoparticles are more easily dispersed in a system, the internal stress accumulation phenomenon caused by partial agglomeration of the nanoparticles is reduced, and the toughness of the plastic is improved; secondly, the dispersing performance of the modified silicon dioxide nanoparticles is remarkably improved, and the heat resistance and the processability of the modified silicon dioxide nanoparticles are improved.

Description

technical field [0001] The invention belongs to the technical field of degradable plastics, and in particular relates to a heat-resistant degradable plastic and a preparation method thereof. Background technique [0002] Plastic products have become an indispensable daily necessities in people's daily life, and can be seen everywhere in production and life. Compared with metal, stone, and wood, plastic products have the advantages of low cost and strong plasticity, and are widely used in the national economy. The plastics industry occupies an extremely important position in the world today. Over the years, the production of plastic products has developed at a high speed all over the world. . Due to the properties of light weight, excellent chemical stability, electrical insulation and thermal poor conductor exhibited by plastics, the application fields of plastics are becoming wider and wider. [0003] At present, plastic products are consumables in daily life, and a large...

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): C08L29/04C08L67/02C08L3/02C08L63/00C08K9/04C08K3/36
CPCC08K2201/011C08L29/04C08L2201/06C08L2201/08C08L2205/035C08L67/02C08L3/02C08L63/00C08K9/08C08K3/36
Inventor 不公告发明人
Owner 安徽才众新材料科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com