High-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide material with neutron absorption function, and preparation method thereof

A polyarylene sulfide and functional technology, which is applied in the field of two-dimensional polyarylene sulfide materials and their preparation, can solve the problems of lack of functionalization of the main chain structure and the lack of full use of special engineering plastic molecules, so as to enhance the ability to absorb neutrons. , the effect of strengthening the shielding effect

Active Publication Date: 2020-01-24
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, these modifications are mainly to improve the toughness, strength and some properties of other materials of PPS. They have not functionalized the main chain structure and endowed it with new special functions, and have not fully utilized the intrinsic properties of special engineering plastic molecules that can be endowed with new functions. potential

Method used

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  • High-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide material with neutron absorption function, and preparation method thereof
  • High-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide material with neutron absorption function, and preparation method thereof
  • High-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide material with neutron absorption function, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Preparation of linear polyarylene sulfide (polyarylene sulfide containing active side groups) with active reactive side groups:

[0054] Add 2500ml NMP, 21gNaOH, 650g sodium sulfide, 50g trisodium EDTA, 58.76g 2,5-dichloroterephthalic acid into a 5L reactor Heated to 200°C under the protection of nitrogen, distilled 790ml of water, added 698.3g of p-dichlorobenzene, reacted at 220°C for 3 hours, the first stage reaction was completed; heated to 265°C for 3 hours, cooled to 120°C and slowly added deionized Water, filter, wash, dry at 110 DEG C for 24 hours, obtain white product 510g, productive rate is about: 92%, glass transition temperature is 95 DEG C, fusing point Tm=292 DEG C, intrinsic viscosity number: 0.36, melt index: 130g / 10min (molecular weight about 65,000).

[0055] 2. Preparation of two-dimensional polyarylene sulfide film raw material (polyarylene sulfide composite material with nuclear radiation protection function):

[0056] Disperse 105 g of poly...

Embodiment 2

[0058] 1. Preparation of linear polyarylene sulfide with reactive side groups:

[0059] Add 2500ml NMP, 21g NaOH, 650g sodium sulfide, 50g sodium citrate, 117.5g 2,5-dichloroterephthalic acid into a 5L reactor Heated to 200°C under the protection of nitrogen, distilled 790ml of water, added 661.5g of p-dichlorobenzene, reacted at 220°C for 3 hours, the first stage reaction was completed; raised the temperature to 265°C for 3 hours, cooled to 120°C and slowly added deionized Water, filter, wash, dry at 110 DEG C for 24 hours, obtain white product 520g, productive rate is about: 93%, glass transition temperature is 98 DEG C, fusing point Tm=296 DEG C, intrinsic viscosity number: 0.38, melting index: 125g / 10min (molecular weight about 68,000).

[0060] 2. Preparation of two-dimensional polyarylene sulfide film raw materials:

[0061] Disperse 105 g of polyarylene sulfide (PPSA) with 10% para-position (2,5) double pendant -COOH, which was dried in vacuum at 120°C for 4 hours, ...

Embodiment 3

[0063] 1. Preparation of linear polyarylene sulfide with reactive side groups:

[0064] Add 2500ml NMP, 21gNaOH, 650g sodium sulfide, 60g diethylenetriamine pentacarboxylate (DTPA), 44.75g 2,5-dichlorohydroquinone into a 5L reactor Heated to 200°C under the protection of nitrogen, distilled 790ml of water, added 698.3g of p-dichlorobenzene, reacted at 220°C for 3 hours, the first stage reaction was completed; raised the temperature to 265°C for 3 hours, cooled to 120°C and slowly added deionized Water, filter, wash, dry at 110 DEG C for 24 hours, obtain white product 510g, productive rate is about: 92%, glass transition temperature is 93 DEG C, fusing point Tm=292 DEG C, intrinsic viscosity number: 0.32, melt index: 145g / 10min (molecular weight about 60,000).

[0065] 2. Preparation of two-dimensional polyarylene sulfide film raw materials:

[0066] Disperse 112g of polyarylene sulfide (PPSA) with 5% para-(2,5) double pendant-OH groups after vacuum drying at 120°C for 4 ho...

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Abstract

The invention relates to a high-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide material with functions of neutron absorption and nuclear radiation prevention, and a preparation method thereof, belongs to the field of functional polymer materials, and provides a boron-containing two-dimensional polyarylene sulfide material with a neutron absorption function, wherein the structural formula of the two-dimensional polyarylene sulfide material is represented by a formula I, and in the formula I, a molar ratio of m1 to m2 is 1-50:99-50. According to the invention, themelting point of the high-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide film with the functions of neutron absorption and nuclear radiation prevention is higher than 280 DEG C, no solvent exists at a temperature of less than 200 DEG C, the fast neutron absorption coefficient is 0.9 when the film is overlapped to a thickness of 8 CM, the gamma ray resistance can reach 10<9>, the tensile strength is larger than 60 MPa, the bending strength reaches 80 MPa, and the product is a novel special macromolecule material capable of absorbing and shielding high-energy rays.

Description

technical field [0001] The invention relates to a two-dimensional polyarylene sulfide material with high temperature resistance, corrosion resistance, neutron absorption function and nuclear radiation protection and a preparation method thereof, belonging to the field of functional polymer materials. Background technique [0002] Special engineering plastics (Special engineering plastics) refer to a class of engineering plastics with high comprehensive performance and long-term use temperature above 150 ° C, mainly including polyphenylene sulfide, polyimide, polyether ether ketone, liquid crystal polymer and poly Sulfone, polyarylate, polyarylamide and fluoropolymer, etc. There are many types of special engineering plastics, with excellent performance and high price. [0003] Special engineering plastics PPS has now become the largest special engineering plastics, with a global production capacity of more than 70,000 tons per year. Due to its excellent corrosion resistance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/029C08G75/0259C08J5/18C08L81/02G21F1/10
CPCC08G75/0259C08G75/029C08J5/18C08J2381/02G21F1/10
Inventor 严永刚焦雪菲任浩浩李鹏程严大卫张刚杨杰
Owner SICHUAN UNIV
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