Polyamide 1012 serial thermoplastic elastomer material and preparation method thereof

A polyamide, C1-C18 technology, applied in the field of thermoplastic elastomer and its preparation, can solve the problems of increased cost, harsh open-loop conditions, high product cost, etc., to achieve reduced production cost, good comprehensive performance, and good solvent resistance Effect

Active Publication Date: 2016-05-11
INST OF CHEM CHINESE ACAD OF SCI
View PDF10 Cites 45 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a moderate reaction temperature and short reaction time, but the use of anionic catalysts requires high purification of raw materials, and it is difficult to obtain high-molecular-weight products and high-performance products.
[0007] Chinese Patent Application Publication No. CN102399357A introduces a synthesis process of a multi-block nylon polyurethane elastomer, which uses an amino-terminated polyamide prepolymer dissolved in a solvent at 80-300°C, and then adds an isocyanate-terminated polyester / polyether prepolymer. Polymer, and then the system synthesizes block polyamide polyurethane elastomer at 80-250 ° C. This method requires the use of organic solvents, which brings inconvenience to industrial production and requires separation and purification, which increases the cost.
The cost of the 12-lactam monomer used in this method is high, and the ring-opening conditions are harsh, so the cost of the product is relatively high

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
  • Polyamide 1012 serial thermoplastic elastomer material and preparation method thereof
  • Polyamide 1012 serial thermoplastic elastomer material and preparation method thereof
  • Polyamide 1012 serial thermoplastic elastomer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0042] On the one hand, a polyamide 1012 series copolymer, the copolymer is a block copolymer formed of polyamide 1012 and polyether / polyester, and its molecular chain structure repeating unit is (A) or (B):

[0043]

[0044] Among them, n is an integer from 1 to 20, R 1 , R 3 C respectively 1 -C 18 Alkyl, R 2 , R 4 are respectively polyether units or polyester units, and X is an O atom or an N atom.

[0045] Preferably, n is an integer of 1-10.

[0046] The polyamide 1012 unit can be either carboxy-terminated or amino-terminated.

[0047] In one embodiment, in the copolymer molecule, the number average molar mass of the polyamide 1012 block is 500-5000 g / mol.

[0048] In another embodiment, in the copolymer molecule, the number average molar mass of the polyamide 1012 block is 500-2500 g / mol.

[0049] In the polyamide 1012 series copolymer of the present application, polyamide is used as a hard segment, and in order to adjust the molar mass of the hard segment, dic...

Embodiment 1

[0094] Add 7.20 g of dodecyl dibasic acid and 2.59 g of decanediamine into the reaction vessel, replace the air in the reaction vessel with nitrogen flow for 5 minutes, heat to 260° C. under nitrogen flow atmosphere, and turn off the nitrogen flow after 40 minutes. Keep the reaction vessel in a closed state, and react at 260°C for 2h. Then evacuate to reduce the pressure in the container, keep the pressure constant for 30min, and then stop evacuating. 10.68 g of polytetrahydrofuran glycol PTMEG2000 and 0.005 g of titanium tetraisopropoxide were added to the reaction vessel. After heating to 260°C under a nitrogen atmosphere, stir for 30 minutes, then gradually reduce the pressure in the reaction vessel to 400 Pa by vacuuming, and discharge after 6 hours of constant pressure reaction. The relative viscosity of the product is 0.11dL / g, the tensile strength is 35.2MPa, the elongation at break is 1250%, and the Shore hardness is 40D.

[0095] DSC test, tensile test and elastic m...

Embodiment 2

[0100] Add 7.20 g of dodecyl dibasic acid and 2.59 g of decanediamine into the reaction vessel, replace the air in the reaction vessel with nitrogen flow for 5 minutes, heat to 260° C. under nitrogen flow atmosphere, and turn off the nitrogen flow after 40 minutes. Keep the reaction vessel in a closed state, and react at 260°C for 2h. Then vacuumize to reduce the pressure in the container to 400Pa, keep the pressure constant for 30min, and then stop vacuumizing. 5.34 g of polytetrahydrofuran glycol PTMEG1000 and 0.005 g of titanium tetraisopropoxide were added to the reaction vessel. After heating to 250°C under a nitrogen atmosphere, stir for 30 minutes, then vacuumize and gradually reduce the pressure in the reaction vessel to 400 Pa, react at constant pressure for 8 hours, and discharge. The relative viscosity of the product is 0.31dL / g, the tensile strength is 38.5MPa, the elongation at break is 750%, and the Shore hardness is 55D.

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

PropertyMeasurementUnit
Shore hardnessaaaaaaaaaa
strengthaaaaaaaaaa
tensile strength at breakaaaaaaaaaa
Login to view more

Abstract

Provided are a long-carbon-chain polyamide 1012 serial thermoplastic elastomer material and a preparation method thereof. The thermoplastic elastomer material is a block copolymer, wherein long-carbon-chain polyamide 1012 blocks serve as hard segments of the block copolymer, and polyether blocks and/or polyester diol blocks serve as soft segments of the block copolymer. The preparation method of the long-carbon-chain polyamide 1012 serial thermoplastic elastomer is a body melt phase polycondensation method under the control of certain temperature and pressure. The preparation cost of the long-carbon-chain polyamide 1012 serial elastomer is lower, and the performance-cost ratio is better; meanwhile, the long-carbon-chain polyamide 1012 serial elastomer has the multiple advantages of long-carbon-chain polyamide and polyether and/or polyester materials, has the advantages of being good in thermal stability, good in solvent resistance, low in water absorbing capacity, good in elasticity, good in wear-resisting property and the like and can be applied in the fields such as soles of high-end sports shoes, medical catheter materials, micro-drive mechanical parts, vibration-absorptive materials for sports equipment and damping and sound insulating materials.

Description

technical field [0001] The invention relates to a polyamide 1012 thermoplastic elastomer material, more specifically, to a thermoplastic elastomer composed of polyamide 1012 chain segments and other chain segments and a preparation method thereof. Background technique [0002] Thermoplastic elastomers include polyolefins, polyurethanes, polyesters, polyamides, polystyrene, polyvinyl chloride, etc. Among them, polyurethane, polyester, and polyamide thermoplastic elastomers have the best heat resistance. excellent. Polyamide elastomer has high strength, high toughness, good elasticity, low specific gravity, good bending fatigue resistance, good wear resistance, good low temperature performance, and can be widely used in automobiles, sporting goods, medical appliances, seals, mechanical parts etc. [0003] Polyamide elastomer is an important member of thermoplastic elastomers. Its polymer structure is composed of high-melting crystalline polyamide hard segments and non-crysta...

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): C08G81/00C08G69/26C08L87/00A61L29/06
CPCA61L29/06C08G69/26C08G81/00C08L87/005
Inventor 董侠朱平王笃金王莉莉高昀鋆刘学新
Owner INST OF CHEM CHINESE ACAD OF SCI
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