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A toughened modified polyacrylonitrile material

A polyacrylonitrile, toughening modification technology, applied in the field of polymer materials, can solve the problems of poor tensile strength and flexural strength, restricting the development of polyacrylonitrile materials, and low toughness of polyacrylonitrile

Active Publication Date: 2022-06-07
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the toughness of polyacrylonitrile is not high, which is manifested in its poor tensile strength and bending strength, which greatly limits the development of polyacrylonitrile materials.

Method used

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  • A toughened modified polyacrylonitrile material
  • A toughened modified polyacrylonitrile material
  • A toughened modified polyacrylonitrile material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 (preparation of modifier)

[0040] The modifier comprises the following parts by weight:

[0041] 4 parts of polyethyleneimine;

[0042] 1 part of 4-acyl chloride phthalic anhydride;

[0043] (E) 1 part of-4,4'-(ethylene-1,2-diyl)diphenol;

[0044] The structural formula of described 4-acyl chloride phthalic anhydride is

[0045] The structural formula of the (E)-4,4'-(ethylene-1,2-diyl)diphenol is

[0046]

[0047] The preparation method of the modifier comprises the following steps:

[0048]S1: prepare raw materials according to the set parts by weight, first add polyethyleneimine and 4-acyl chloride phthalic anhydride into the reaction vessel containing acetone, stir and mix to form a first mixture; then at a temperature of 70 ° C Reaction was carried out under the conditions, and the reaction time was 4 hours;

[0049] S2: Then (E)-4,4'-(ethylene-1,2-diyl)diphenol is added to the first mixture and stirred and mixed; after mixing uniformly, the r...

Embodiment 2

[0050] Example 2 (preparation of modified polyacrylonitrile)

[0051] The modified polyacrylonitrile comprises the following parts by weight:

[0052] 5 parts of polyacrylonitrile;

[0053] 5 parts of modifier;

[0054] 1 part of cross-linking agent;

[0055] Described modifier is made by embodiment 1

[0056] The crosslinking agent is 4-allyl-1,6-heptadien-4-ol;

[0057] The preparation method of the modified polyacrylonitrile comprises the following steps:

[0058] Step 1: Add 5g polyacrylonitrile, 0.1g catalyst palladium acetate and 0.3g benzoyl peroxide initiator into a reaction vessel containing 100ml solvent N,N-dimethylformamide, stir and mix, and form after mixing uniformly. the second mixture;

[0059] Step 2: Add 5g of modifier and 1g of cross-linking agent to the second mixture, stir and mix, and after mixing evenly, carry out the reaction at a temperature of 120 °C, and the reaction time is 8h; after the reaction, filter, purify and dry to prepare Modified p...

Embodiment 3

[0060] Example 3 (Preparation of N,N-bis(trifluoromethyl)-2H-benzo[d][1,2,3]triazol-2-amine)

[0061] The preparation method of the N,N-bis(trifluoromethyl)-2H-benzo[d][1,2,3]triazol-2-amine is to mix 0.001 mol of (E)-1-(2- Nitrophenyl)-3,3-bis(trifluoromethyl)triazol-1-ene, 0.003 mol of triphenylphosphine and 0.001 mol of di-tert-butyl peroxide were added to dioxane containing 10 ml of solvent. The reaction vessel was stirred and mixed; after the mixing was uniform, the reaction was carried out at a temperature of 130 °C, and the reaction time was 9 h; Benzo[d][1,2,3]triazol-2-amine;

[0062] Its reaction formula is

[0063]

[0064] Characterization data: 1 H NMR (CDCl 3 ,500MHz,ppm):δ7.92(s,2H),7.36(s,2H).

[0065] 13 C NMR (CDCl 3 ,125MHz,ppm):δ141.6,133.7,125.9,116.2.

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Abstract

The invention discloses a toughened modified polyacrylonitrile material, which is prepared by using modified polyacrylonitrile as base material and adding auxiliary agents such as toughening agent and dispersant; wherein the modified polyacrylonitrile is made of polyacrylonitrile Acrylonitrile is a raw material, which is modified by a modifier and a crosslinking agent; the modifier is based on polyethyleneimine, and 4-acyl chloride phthalic anhydride and (E )‑4,4'‑(ethylene‑1,2‑diyl)diphenol was reacted; the crosslinking agent was 4‑allyl‑1,6‑heptadiene‑4‑alcohol; the toughening agent N,N‑bis(trifluoromethyl)‑2H‑benzo[d][1,2,3]triazole‑2‑amine, 2‑(3,4‑epoxycyclohexane)ethyl A mixture of trimethoxysilane and benzyl methacrylate; the final toughened modified polyacrylonitrile material has good toughness, and its tensile strength, bending strength and impact strength are relatively large; it also has Strong anti-ultraviolet ability, after a long time of ultraviolet radiation, its toughness is still good.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more particularly to a toughened modified polyacrylonitrile material. Background technique [0002] Polyacrylonitrile is a high molecular compound obtained by radical polymerization of monomer acrylonitrile. It is a white or slightly yellow opaque powder with a relative density of 1.12 and a glass transition temperature of about 90°C. Polyacrylonitrile is soluble in polar organic solvents such as dimethylformamide, dimethylsulfoxide, sulfolane, and ethylene nitrate. Polyacrylonitrile has good weather resistance and sun resistance, and it can still maintain 77% of its original strength after being placed outdoors for 18 months; in addition, it is also resistant to chemical agents, especially inorganic acids, bleaching powder, peroxide Hydrogen and general organic reagents; therefore, polyacrylonitrile is mainly used in the fields of synthetic fibers, medical appliances and sewage tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/08C08L1/28C08K5/20C08K3/38C08F283/00C08F220/18C08G81/02
CPCC08L51/08C08F283/00C08G81/024C08K2003/387C08L1/284C08K5/20C08K3/38C08F220/18
Inventor 刘建平宋霞刘子赫
Owner WENZHOU UNIV