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

Tough nylon and preparation method thereof

A nylon and toughness technology, applied in the field of tough nylon and its preparation, to achieve the effects of high mechanical strength, improved impact resistance and moderate price

Active Publication Date: 2014-08-06
INST OF CHEM CHINESE ACAD OF SCI
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the blended material has phase separation to a certain extent, and it also has its defects in preparation and use. As one of the chemical toughening methods of polyamide, copolymerization toughening is to change the molecular chain of polyamide and the inter-molecular chain. structure to improve the thermal properties, crystallization properties and mechanical properties of polyamides
[0004] Traditional nylon 66, nylon 610 and nylon 612 have high crystallinity, and in the dry state at low temperature, although their mechanical strength is guaranteed, they are obviously brittle

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
  • Tough nylon and preparation method thereof
  • Tough nylon and preparation method thereof
  • Tough nylon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 1000g of deionized water into the reaction kettle, turn on the stirrer, and under the stirring bar, add 300g of nylon 66 salt, 15g of adipic acid as a molecular weight control agent, and 75g of dodecanedipic acid as an aliphatic diacid Add acid and 70g of 4,4'-diamino-dicyclohexylmethane as an alicyclic diamine into deionized water and stir to mix evenly, then add 0.5g of benzoic acid and 0.1g of hypophosphorous acid into the reaction kettle, continue Stir until all the above ingredients are mixed evenly;

[0030] (2) Close the reaction kettle in step (1), fill the reaction kettle with nitrogen and vacuumize 3 to 5 times to discharge the air in the reaction kettle; then fill the reaction kettle with nitrogen to make the initial pressure in the reaction kettle Maintain at 0.2MPa;

[0031] (3) Turn on the heating device, and uniformly raise the temperature of the reactor in step (2) from room temperature to 180°C within 90 minutes, and keep it warm for 30 minutes...

Embodiment 2

[0036] (1) Add 1000g of deionized water into the reaction kettle, turn on the stirrer, and under the stirring bar, add 300g of nylon 66 salt, 20g of adipic acid as a molecular weight control agent, and 18g of dodecane as an aliphatic diacid Add acid and 16g of 4,4'-diamino-dicyclohexylmethane as an alicyclic diamine into deionized water and stir to mix evenly, then add 3g of benzoic acid and 1.5g of hypophosphorous acid into the reaction kettle and continue stirring , until all the above raw materials are mixed evenly;

[0037] (2) Close the reaction kettle in step (1), fill the reaction kettle with nitrogen and vacuumize 3 to 5 times to discharge the air in the reaction kettle; then fill the reaction kettle with nitrogen to make the initial pressure in the reaction kettle Maintain at 0.5MPa;

[0038](3) Turn on the heating device, and uniformly raise the temperature of the reactor in step (2) from room temperature to 220°C within 120 minutes, and keep it warm for 60 minutes,...

Embodiment 3

[0043] (1) Add 1000g of deionized water into the reaction kettle, turn on the stirrer, and under the stirring bar, add 300g of nylon 66 salt, 22g of adipic acid as a molecular weight control agent, and 100g of dodecanedipic acid as an aliphatic diacid acid and 89g of 3,3'-dimethyl-4,4'-diamino-dicyclohexylmethane as an alicyclic diamine were added to deionized water and stirred evenly, then 0.03g of benzene was added to the reaction kettle Formic acid and 0.06g hypophosphorous acid, continue stirring until all the above raw materials are mixed evenly;

[0044] (2) Close the reaction kettle in step (1), fill the reaction kettle with nitrogen and vacuumize 3 to 5 times to discharge the air in the reaction kettle; then fill the reaction kettle with nitrogen to make the initial pressure in the reaction kettle Maintain at 0.5MPa;

[0045] (3) Turn on the heating device, and uniformly raise the temperature of the reactor in step (2) from room temperature to 200°C within 100 minutes...

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 present invention belongs to the field of nylon material preparation and production, and particularly relates to a tough nylon and a preparation method thereof. According to the present invention, a copolymerization reaction method is adopted, structure characteristics of an aliphatic diacid monomer, an aliphatic diamine monomer and an alicyclic diamine monomer are adopted, and an aliphatic diacid, an aliphatic diamine and / or an alicyclic diamine, an amide salt and the like are subjected to a copolymerization reaction so as to prepare the tough nylon material, wherein the length of the molecular chain unit of the tough nylon is increased, such that the tough nylon material has significantly increased toughness compared with the traditional nylon while the high mechanical strength is maintained; and the tough nylon material has increased hydrolysis resistance and increased thermal decomposition resistance.

Description

technical field [0001] The invention belongs to the field of preparation and production of nylon materials, and in particular relates to tough nylon and a preparation method thereof. Background technique [0002] As the earliest developed polyamide engineering plastic, nylon is widely used in chemical industry and electrical appliances due to its high strength, high modulus, excellent chemical resistance and wear resistance, high melting point and low friction coefficient. , automobiles, and other machinery manufacturing fields. However, in more demanding application fields and further research, nylon is brittle at low temperature and dry state, which greatly limits its application. Therefore, sometimes it is necessary to improve the toughness of nylon engineering plastics to make them have higher performance such as high impact and low water absorption. The development and research of this high-performance direction has become an important topic at home and abroad. [000...

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): C08G69/26C08G69/28C08L77/06
Inventor 马永梅彭中樑曹新宇贺丹赵斌
Owner INST OF CHEM CHINESE ACAD OF SCI
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