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Toughened modified nylon

A kind of toughening modification, nylon technology, applied in the field of polymer material application, nylon modification, can solve the problems of deteriorating processing performance and heat resistance, damage to material strength and rigidity, etc.

Inactive Publication Date: 2019-03-22
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, a large number of studies by domestic and foreign researchers have shown that blending nylon with functionalized elastomers or functionalized polyolefins can significantly increase its toughness, but at the same time damage the strength and rigidity of the material, and often deteriorate its processing performance and heat resistance. performance

Method used

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  • Toughened modified nylon
  • Toughened modified nylon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 50 parts of thermoplastic elastomer POE; 6 parts of mixture of bismaleic acid and maleic anhydride; 50 parts of homopolypropylene.

[0024] First, maleic anhydride and hexamethylenediamine with a molar ratio of 2.2:1 were dissolved in acetone solution at room temperature, stirred thoroughly, and after they were completely dissolved, the solution was slowly poured into the acetone solution of hexamethylenediamine, and Stir continuously for 60 min. After the reaction is completed, add the mixed solution into petroleum ether and stir continuously for 30 min. After suction filtration and drying, a mixture of dimaleyl diamic acid and maleic anhydride is obtained.

[0025] Dry 50 parts of thermoplastic elastomer POE, 50 parts of homopolypropylene PP, and 6 parts of the above-mentioned mixture of bismaleyl diamine acid and maleic anhydride in a blast oven at 80°C for 8 hours, and add 0.004 parts of diisopropyl peroxide Mix benzene evenly, melt and mix reaction in a twin-screw ...

Embodiment 2

[0032] The formula of the multi-component graft copolymer blend is 30 parts of thermoplastic elastomer POE; 3 parts of bismaleamide diamine acid mixture; 70 parts of homopolypropylene, the preparation method is the same as that of Example 1; the multi-component graft 20 parts of the copolymerized blend and 121280 parts of nylon were melt-blended, and the preparation method and test method were the same as in Example 1.

[0033] Table 2. Embodiment 2 nylon composite material and pure nylon 1212 mechanical properties and melting point

[0034]

Embodiment 3

[0036] The multi-component formula is 10 parts of thermoplastic elastomer POE; 1 part of bismaleic diamic acid mixture; 90 parts of homopolypropylene, the preparation method is the same as that of Example 1; 30 parts of the multi-component graft copolymerization blend Melt blending with nylon 121270 parts, the preparation method and test method are the same as in Example 1.

[0037] Table 3. Embodiment 3 nylon composite material and pure nylon 1212 mechanical properties and melting point

[0038] .

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PUM

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Abstract

The invention relates to a toughened modified nylon, discloses toughening and reinforcing modifying of nylon by a multi-grafted copolymerizing mixture, and belongs to the field of modifying of plastics. The toughened modified nylon is characterized in that polyolefin, thermoplastic elastomer and dimaleic acid are used as main raw materials; maleic anhydride and diisopropyl peroxide are used as auxiliary raw materials; a simple reactive blending method is adopted, so as to prepare the multi-grafted copolymerizing mixture; the multi-grafted copolymerizing mixture is used as a toughening agent ofthe nylon to modify the nylon. After improving, the toughened modified nylon has the advantages that the impact toughness is obviously improved, and the original rigidity and tensile strength of thenylon are also reserved; the good application prospect and application value are realized.

Description

technical field [0001] The invention relates to the field of nylon modification, in particular to the application of a graft copolymer blend in nylon toughening, and belongs to the field of polymer material applications. Background technique [0002] Nylon is a commonly used engineering plastic with excellent mechanical properties and dimensional stability. It is widely used in mechanical equipment, electronic appliances, textiles, aerospace, food and drug packaging and other fields. Due to the high requirements for the toughness of nylon in many fields, in order to meet these applications, nylon must be toughened and modified. For this reason, a large number of studies by domestic and foreign researchers have shown that blending nylon with functionalized elastomers or functionalized polyolefins can significantly increase its toughness, but at the same time damage the strength and rigidity of the material, and often deteriorate its processing performance and heat resistance....

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L51/06C08K5/134C08K5/526
CPCC08L77/06C08L2201/08C08L2205/025C08L2205/03C08L51/06C08K5/1345C08K5/526
Inventor 王万杰曹艳霞郭朝光宋遥杨艳宇王建峰
Owner ZHENGZHOU UNIV
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