Biodegradable poly-terephthalic acid type foaming material and preparation method thereof

A technology of polyterephthalic acid and foaming materials, applied in the field of degradable polyterephthalic acid foaming materials and its preparation, can solve the problems of less than 20 minutes of service life, non-durability, instability, etc., and achieve Continuously controllable and stable foaming effect

Active Publication Date: 2018-06-29
上海德亿化工有限公司
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China alone produces millions of tons of non-degradable lunch boxes and non-degradable plastic packaging bags every year, and the average service life is less than 20 minutes
However, limited by the structural properties and processing technology of the material itself, the understanding of the foaming principle, etc., the domestic control method for expanded thermoplastic polymer elastic materials is simple and unstable, especially for highly crystalline polymer materials, su...

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
  • Biodegradable poly-terephthalic acid type foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] A preparation method of degradable poly terephthalic foam material, comprising the following steps:

[0053] (1): Put 0.1-100 parts of polyterephthalic acid plastics and 0-10 parts of degradation agent into the screw extruder 1, shear and melt to form a fluid hot melt 1, at this time, use the screw High-temperature and high-speed shearing, together with degradation agents such as short-chain alcohols, partially degrades polyterephthalic acid plastics into molecular fragments, and makes molecular fragments capped by functional groups such as hydroxyl groups; this step is to promote For the degradation reaction, metal catalysts, such as organotin / organozinc / organosilver, can be added.

[0054] (2): Pump the hot melt into the screw reactor, and then add 0.1-10 parts of chain extender (diisocyanate-terminated long-chain polyurethane prepolymer, which can be toluene 2,4 diisocyanate TDI, diphenyl methane diisocyanate MDI, isophorone diisocyanate IPDI or hexamethylene diisoc...

Embodiment 1

[0075] A kind of preparation method of degradable polyethylene terephthalic foam material, see figure 1 shown, including the following steps:

[0076] (1): Put 100 parts of polyterephthalic acid plastics (this embodiment uses PET) and 5 parts of degradation agent (this embodiment uses 1,4-butanediol) into screw extruder one, the operating temperature At 230°C, the shear melting forms a fluid hot melt. At this time, the high-temperature and high-speed shearing of the screw is used, and the short-chain alcohol and other degradation agents are used to partially degrade the polyterephthalic acid plastics into pieces. Molecular fragments, and the molecular fragments are capped by functional groups such as hydroxyl groups;

[0077] (2): The hot melt is pumped into the screw reactor, and then 5 parts of chain extenders are added (this embodiment uses diisocyanate-terminated long-chain polyurethane prepolymers, which are specifically composed of dicyclohexylmethane diisocyanate HMDI ...

Embodiment 2

[0081] Different from Example 1, this embodiment is further in the screw reactor of step (2) when adding the hot melt 1, and also adding 97 parts of aliphatic polyester (this embodiment adopts adipate adipate) Alcohol ester) is sheared and melted into hot melt two in screw extruder three.

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 biodegradable poly-terephthalic acid type foaming material and a preparation method thereof. The foaming material is prepared by the following method that (1) poly-terephthalic acid type plastics and a degradation agent are put into a first multiple screw extruder; shear melting is performed to form a first hot melt with mobility; (2) the first hot melt is pumped into ascrew reactor; then, a chain extender is added for reaction; (3) the reacted melt body is then pumped into a second multiple screw extruder; then, a cross-linking agent, a nucleating agent and a foaming agent are added; mixing and homogenizing are performed; (4) a homogeneous melt body obtained in the step (3) is output and is foamed and formed. Compared with the prior art, the foaming material and the preparation method have the advantages that DNA sequence recombination is simulated for performing the processes of macromolecule degradation crushing, molecule fragment unordered reconstitutionand the like; a superhigh polymer structure with a multifunctional side chain and a functional fragment at a main chain is generated; the foaming operation time, the temperature window and the like are optimized; the physical property enhancement and the continuous controllable and stable forming of the poly-terephthalic acid type foaming material are realized.

Description

technical field [0001] The invention relates to the field of degradable foaming materials, in particular to a degradable polyterephthalic acid foaming material and a preparation method thereof. Background technique [0002] High molecular polymers have been widely used in the manufacture of all fields related to human life from aircraft to clothing, but because most of the polymers are derived from organic hydrocarbons, their waste cannot be degraded for decades or even hundreds of years, while Such polymers can be made directly or foamed into daily-use packaging materials, lunch boxes, consumables, electronic films, agricultural films and other fast-consumables. China alone produces millions of tons of non-degradable lunch boxes and non-degradable plastic packaging bags every year, and the average service life is less than 20 minutes. It has brought immeasurable pressure on the environment and resources, and the whole society, including the government, enterprises, and the...

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): C08J9/12C08J9/14C08J9/00C08G18/42B29C44/02C08L75/06C08G101/00
CPCB29C44/02B29C44/022C08G18/4213C08G2101/00C08J9/0028C08J9/0066C08J9/0071C08J9/122C08J9/141C08J2203/06C08J2203/14C08J2203/182C08J2203/202C08J2375/06C08K3/04C08K3/34C08K5/3432C08K7/24C08K2003/2241C08K2003/265C08K2201/011
Inventor 陈乔健郭杨龙
Owner 上海德亿化工有限公司
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