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Super-tough polyamide alloy as well as preparation method and application thereof

A technology of tough polyamide and polyamide, which is applied in the field of super tough polyamide alloy and its preparation, can solve the problems of limited application and poor impact performance of polyamide, and achieve good dimensional stability, low moisture absorption, and high notch impact intensity effect

Active Publication Date: 2014-02-12
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyamide has excellent mechanical properties, good wear resistance and self-lubricating properties and outstanding electrical properties, but the impact performance of polyamide is not good, which limits its application in many aspects

Method used

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  • Super-tough polyamide alloy as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A super-tough polyamide alloy prepared by the following method:

[0038] (1) Vacuum dry PA6 and PET at 120°C for 4 hours;

[0039] (2) Take 81.5% PA6 (viscosity 1.8dL / g), 2% PET (viscosity 0.6dL / g), 0.5% sodium benzenesulfonate, 10.5% maleic anhydride grafted ethylene-octene Copolymer, 4.5% SEBS, 1% processing aids (0.5% nucleating agent superfine talc, 0.25% antioxidant 1098 and 0.25% lubricant polyethylene wax; the same below). After mixing with a high-speed mixer, it is weighed by weight loss and added to an extruder to extrude and granulate to obtain a super-tough polyamide alloy; the stated percentages are the percentages of each component in the total mass of raw materials.

[0040] The settings of the twin-screw extruder are as follows: the temperature of the first zone of the twin-screw extruder is 120~140°C, the temperature of the second zone is 260~270°C, the temperature of the third zone is 240~250°C, the temperature of the fourth zone is 240~250°C, and the ...

Embodiment 2

[0042] A super-tough polyamide alloy prepared by the following method:

[0043] (1) Vacuum dry PA12 and PBT at 120°C for 4 hours;

[0044] (2) Take 40% PA12 (viscosity 2.5dL / g), 25% PBT (viscosity 0.9dL / g), 2% potassium benzenesulfonate, 2% maleic anhydride grafted polyethylene, 30 % of maleic anhydride grafted EPDM rubber and 1% of processing aids are mixed with a high-speed mixer and added to the extruder by weight loss metering to extrude and granulate to obtain super-tough polyamide alloy; The percentages are the percentages of each component in the total mass of raw materials.

[0045] The settings of the twin-screw extruder are as follows: the temperature of the first zone of the twin-screw extruder is 120~140°C, the temperature of the second zone is 260~270°C, the temperature of the third zone is 240~250°C, the temperature of the fourth zone is 240~250°C, and the temperature of the fifth zone The temperature is 240~250°C, the temperature in the six zones is 240~250°C,...

Embodiment 3

[0047] A super-tough polyamide alloy prepared by the following method:

[0048] (1) Vacuum dry PA66 and PET at 120°C for 4 hours;

[0049] (2) Take 36% PA66 (viscosity 3.0dL / g), 36% PET (viscosity 0.7dL / g), 3% polyester ionomer (DuPont SURLYN 9320), 24% Malay Anhydride grafted ethylene-octene copolymer and 1% processing aid are mixed with a high-speed mixer and added to the extruder to extrude and granulate by weight loss metering to obtain a super-tough polyamide alloy; the percentage is The percentage of each ingredient in the total mass of raw materials.

[0050] The settings of the twin-screw extruder are as follows: the temperature of the first zone of the twin-screw extruder is 120~140°C, the temperature of the second zone is 260~270°C, the temperature of the third zone is 240~250°C, the temperature of the fourth zone is 240~250°C, and the temperature of the fifth zone The temperature is 240~250°C, the temperature in the six zones is 240~250°C, the temperature of the m...

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Abstract

The invention discloses a super-tough polyamide alloy as well as a preparation method and application thereof. The super-tough polyamide alloy comprises the following preparation materials: 2%-81.5% of polyamide, 2%-81.5% of polyester, 0.5%-5% of a compatilizer and 10%-35% of a toughening agent, wherein intrinsic viscosity of the polyamide is 1.8 dL / g-3.0 dL / g, and the intrinsic viscosity of the polyester is 0.6 dL / g-0.9 dL / g; the compatilizer is more than one of polymer ionomer, polyamide-polyester segmented copolymer, phenyl sulfonate, epoxy resin, maleic anhydride-grafted copolymer or rubber phase-containing elastomer; the toughing agent is one of maleic anhydride-grafted ethylene propylene terpolymer rubber, maleic anhydride-grafted ethylene-octylene copolymer or maleic anhydride-grafted hydrogenated styrene-butadiene-styrene terpolymer. Compared with the super-tough polyamide, the super-tough polyamide alloy disclosed by the invention has high notch impact strength, lower humidity absorption as well as resulting in good dimension stability.

Description

technical field [0001] The invention belongs to the field of modification of engineering plastics, and in particular relates to a super-tough polyamide alloy and its preparation method and application. The super-tough polyamide alloy can be applied to the fields of automobiles, sports equipment, toys, office appliances, construction engineering and the like. Background technique [0002] Polyamide (PA) is the engineering plastic with the most varieties, the widest application and excellent comprehensive performance among the five major engineering plastics. Polyamide has excellent mechanical properties, good wear resistance and self-lubricating properties, and outstanding electrical properties. However, polyamide has poor impact properties, which limits its application in many aspects. [0003] Since 1976, DuPont has used maleic anhydride grafted EPDM rubber as a reactive toughening agent to modify polyamide 66, and achieved an impact strength of over 80KJ / m 2 Since the int...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L67/00C08L67/02C08L51/00C08L51/06C08L63/00C08L77/12C08K5/42B29C47/92B29C48/92
CPCB29C48/92B29C2948/92514B29C2948/92704C08L67/02C08L77/02C08L77/06C08L2205/025C08L2205/035C08L51/06C08L53/02C08K5/42C08K3/34C08L67/00C08L63/00C08L77/00C08L51/04
Inventor 谭麟梁惠强陈大华赵建青宁凯军孙东海叶南飚
Owner KINGFA SCI & TECH CO LTD
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