Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of copolymerized high temperature resistant nylon and its preparation method and application

A high temperature-resistant and copolymerization technology, applied in the field of high molecular polymers, can solve the problems of weak succinate activity, complex polymerization process, and difficult industrial scale-up, and achieve outstanding photostability, excellent flame retardant performance, and high molecular structure. Effect

Active Publication Date: 2021-09-17
惠生(泰州)新材料科技有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method involved in this patent is to perform transesterification in the presence of a solvent. The succinate has problems such as weak activity, low boiling point, and easy volatility, and there is also an amine transesterification reaction in the polymerization process, which makes the polymerization process complicated. , industrial scale-up is difficult and a series of problems
Due to the molecular chain structure of the high-temperature nylon products currently on the market, there are problems such as poor impact strength, low toughness, and easy yellowing.

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
  • A kind of copolymerized high temperature resistant nylon and its preparation method and application
  • A kind of copolymerized high temperature resistant nylon and its preparation method and application
  • A kind of copolymerized high temperature resistant nylon and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Salt the multifunctional dibasic acid whose R is p-phenylene and decanediamine at a molar ratio of 0.97:1 to obtain component A; and decanediamine and terephthalic acid to form a salt with a molar ratio of 1.03:1 to obtain nylon 10T salt; decanediamine and sebacic acid are salted at a molar ratio of 1.03:1 to obtain nylon 1010 salt. Then put 0.5kg of component A, 7kg of nylon 10T salt and 2.5kg of nylon 1010 salt into the reactor, add 1kg of water and 0.2kg of benzoic acid, replace the air in the reactor with nitrogen for 3 to 4 times, and heat up to 210°C. Keep the pressure in the kettle at 1.5-2.5MPa, continue to heat up to 310°C, keep the pressure in the kettle at 1.5-2.0MPa, keep the pressure for 1.5h, release the gas to normal pressure, drain the water in the system, and then gradually vacuumize the system to reduce the pressure. Press down to -0.03~-0.07MPa, keep it for 4 hours, then fill it with nitrogen to 0.4MPa, discharge the material to obtain copolymerized h...

Embodiment 2

[0054] Salt the multifunctional dibasic acid whose R is p-phenylene with decanediamine at a molar ratio of 0.97:1 to obtain component A; salt with decanedidiamine and terephthalic acid at a molar ratio of 1.03:1 to obtain nylon 10T Salt; Decanediamine and sebacic acid are salted at a molar ratio of 1.03:1 to obtain nylon 1010 salt. Then put 1 kg of component A, 7 kg of nylon 10T salt and 2 kg of nylon 1010 salt into the reactor, add 1 kg of water and 0.2 kg of benzoic acid, replace the air in the reactor with nitrogen for 3 to 4 times, raise the temperature to 210 ° C, and keep the reactor The internal pressure is 1.5-2.5MPa, continue to heat up to 310°C, keep the pressure in the kettle at 1.5-2.0MPa, keep the pressure for 1.5h, release the gas to normal pressure, discharge the water in the system, and then gradually vacuumize the system to decompress to -0.03~-0.07MPa, keep it for 4 hours, then fill it with nitrogen to 0.4MPa, and discharge the material to obtain the copolyme...

Embodiment 3

[0056] The multifunctional dibasic acid whose R is a p-phenyl group is salted with decanediamine at a molar ratio of 0.97:1 to obtain component A; the molar ratio of decanediamine and terephthalic acid is formed into a salt with a molar ratio of 1.03:1 to obtain nylon 10T salt; decanediamine and sebacic acid are salted at a molar ratio of 1.03:1 to obtain nylon 1010 salt. Then put 1.5kg of component A, 7kg of nylon 10T salt and 1.5kg of nylon 1010 salt into the reactor, add 1kg of water and 0.2kg of benzoic acid, replace the air in the reactor with nitrogen for 3 to 4 times, and heat up to 210°C. Keep the pressure in the kettle at 1.5-2.5MPa, continue to heat up to 310°C, keep the pressure in the kettle at 1.5-2.0MPa, keep the pressure for 1.5h, release the gas to normal pressure, drain the water in the system, and then gradually vacuumize the system to reduce the pressure. Press down to -0.03~-0.07MPa, keep it for 4 hours, then fill it with nitrogen to 0.4MPa, discharge the m...

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 provides a high-temperature-resistant copolymerized nylon and its preparation method and application. The high-temperature-resistant copolymerized nylon comprises a repeating structural unit represented by the following general formula (I) and a repeating structure represented by the following general formula (II) unit and a nylon resin having a repeating structural unit represented by the following general formula (III). The light stability of the high-temperature-resistant nylon with the structure in this application is more prominent, which can fundamentally improve the problem of easy yellowing of high-temperature-resistant nylon, and has good dyeing performance, high glass transition temperature, and high char formation rate. and excellent flame retardancy.

Description

technical field [0001] The invention relates to a high molecular polymer, in particular to a copolymerized high temperature resistant nylon and its preparation method and application. Background technique [0002] Polyamide (PA), commonly known as nylon, is a general term for resins containing repeated amide groups in the molecular chain. Nylon is the base resin with the largest output, the most varieties, the widest range of uses, and excellent comprehensive performance among the five general-purpose engineering plastics. High temperature resistant nylon refers to nylon engineering plastics that can be used above 150°C for a long time. It has good wear resistance, heat resistance, oil resistance, chemical resistance, dimensional stability and excellent mechanical properties. At present, the varieties that have been industrialized include PA46, PA6T, PA9T, PA10T, etc. In 1990, the Dutch DSM company realized the industrialization of high-temperature resistant nylon PA46 for...

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 Patents(China)
IPC IPC(8): C08G69/26C08G69/28
CPCC08G69/265C08G69/28
Inventor 刘浩宇高敬民邓慧
Owner 惠生(泰州)新材料科技有限公司