High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof

A technology of polyester alloy and polyamide, applied in the field of modified plastics, can solve the problems that the alloy does not have practical use value and cannot meet the application requirements of engineering grade, and achieves the effects of high toughness, improved compatibility and increased strength

Inactive Publication Date: 2013-09-18
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN100448930C has prepared the blend alloy by reclaiming polyethylene terephthalate and polyamide 66 blending, but the notched impact strength of the alloy rein

Method used

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  • High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof
  • High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof
  • High-strength and high-toughness polyamide/polyester alloy, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0050] Example 1

[0051] A high-strength, high-toughness polyamide / polyester alloy is prepared by the following steps:

[0052] (1) drying PA6 and PET respectively;

[0053] (2) The dried PA6 (95wt%, viscosity of 1.8dL / g) and PET (3%, viscosity of 0.6dL / g) and sodium benzenesulfonate (0.5wt%), maleic anhydride grafted polypropylene (0.5wt%), additives (composed of antioxidant 1098, lubricant polyethylene wax and nucleating agent superfine talc) (1wt%) were mixed by a high-speed mixer and then added to the extruder by weight loss weighing , extrusion granulation to obtain high-strength, high-toughness polyamide / polyester alloy. 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 is 240-250°C. The temperature is 240~...

Example Embodiment

[0055] Example 2

[0056] A high-strength, high-toughness polyamide / polyester alloy is prepared by the following steps:

[0057] (1) drying PA12 and PBT respectively;

[0058] (2) Combine the dried PA12 (60wt%, viscosity of 2.5dL / g) and PBT (35wt%, viscosity of 0.9dL / g) with potassium benzenesulfonate (2wt%), maleic anhydride grafted polyethylene ( 2wt%), additives (composed of antioxidant 1098 and lubricant polyethylene wax) (1wt%) are mixed by a high-speed mixer and then added to an extruder by weight loss weighing, extruded and pelletized to obtain high-strength, High toughness polyamide / polyester alloy. 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 is 240-250°C. The temperature is 240~250℃, the temperature o...

Example Embodiment

[0060] Example 3

[0061] A high-strength, high-toughness polyamide / polyester alloy is prepared by the following steps:

[0062] (1) drying PA66 and PET respectively;

[0063] (2) Dried PA66 (42wt%, viscosity 3.0dL / g) and PET (42wt%, viscosity 0.7dL / g) and polyester ionomer (DuPont, Surlyn 9320) (7wt%), Maleic anhydride grafted polystyrene (8wt%), additives (composed of antioxidant 1098, lubricant polyethylene wax and nucleating agent ultrafine talc) (1wt%) were mixed by a high-speed mixer and then passed through a weight loss formula. The metering is added to the extruder, extruded and pelletized to obtain a polyamide / polyester alloy with high strength and high toughness. 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 fif...

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Abstract

The invention discloses a high-strength and high-toughness polyamide/polyester alloy, a preparation method and an application thereof. The high-strength and high-toughness polyamide/polyester alloy is prepared from 1-97 % of the polyamide, 1-97 % of the polyester, 1-20 % of a compatibilizer and 1 % of an additive, wherein the polyamide has an intrinsic viscosity of 1.8-3.0 dL/g, the polyester has an intrinsic viscosity of 0.6-0.9 dL/g, and the compatibilizer is selected from more than one of polymer ionomer, polyamide-polyester block copolymer, phenyl sulfonate, epoxy resin, maleic anhydride grafted copolymer or elastomer containing rubber phase. By using the polyamide and polyester resin with specific viscosity, and the compatibilizer provided in the invention, compatibility of the above resin can be effectively improved, so that the above blends has relatively high toughness and strength.

Description

technical field [0001] The invention relates to the field of modified plastics, in particular to a high-strength, high-toughness polyamide / polyester alloy and a preparation method and application thereof. Background technique [0002] Due to its special molecular structure, polyamide has excellent mechanical properties, self-lubricating properties and thermal stability. As an engineering plastic, it is widely used in the fields of automobiles, electronic appliances, machinery and sports equipment. However, polyamide has disadvantages such as high molding shrinkage rate and high water absorption rate, which make the dimensional stability of the prepared parts poor, which limits the use of polyamide. [0003] Glass fiber reinforced polyamide can significantly improve the mechanical properties of polyamide, but the inherent molding shrinkage and high water absorption of polyamide are difficult to be effectively solved by glass fiber filling. The polyamide / polyester alloying ca...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L67/00C08L67/02C08L23/00C08L63/00C08L51/06C08L51/08C08L53/02C08L51/00C08K5/42B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 谭麟陈大华梁惠强郑一泉岑茵赵建青宁凯军
Owner KINGFA SCI & TECH CO LTD
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