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Creep-resistant polyamide composition, preparation method and manufactured product

A polyamide composition and a polyamide technology are applied in the preparation method and the obtained product, in the field of polyamide composition, which can solve the problems of difficulty in mass application, no examples and data are given, and achieve good creep resistance. Effect

Active Publication Date: 2016-08-10
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1171928C (the equivalent patent WO2000011088) proposes a compound of polyamide and apatite, which can not only improve the toughness of the material, but also improve the rigidity, heat resistance and creep resistance of the material after water absorption, but such a system is difficult to function heavy use of components
In US3988287 polyamide and inorganic filled polymer, adding a compound containing double bonds and epoxy groups can improve the creep performance of the material, but no specific examples and data are given, and such a method is also difficult Many applications in the market

Method used

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  • Creep-resistant polyamide composition, preparation method and manufactured product
  • Creep-resistant polyamide composition, preparation method and manufactured product
  • Creep-resistant polyamide composition, preparation method and manufactured product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4、 comparative example 1-6

[0061] Add polyamide 6 (PA6) with a relative viscosity of 2.4, copper salt composite antioxidant, oxidized polyethylene wax and talcum powder with an average particle size of 5000 meshes into the high mixer according to the weight parts listed in Table 1. Mix evenly at room temperature, then pass into the extruder through the main feed port of the twin-screw extruder, and pass 30-75 parts by weight of glass fiber into the extruder through the side feed port of the twin-screw extruder; Use a twin-screw extruder to carry out extrusion granulation. The processing conditions for extrusion granulation are: the temperature of the first zone is 220°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 240°C, and the temperature of the fifth zone is 250°C , the temperature in the sixth zone is 250°C, the temperature in the seventh zone is 245°C, the temperature in the eighth zone is 235°C, and the temperature i...

Embodiment 5-7 and comparative example 5-6

[0074] According to the weight parts listed in Table 4, polyamide 66 (PA66), copper salt composite antioxidant, oxidized polyethylene wax and talc powder with an average particle size of 5000 mesh were added to the high mixer, and mixed evenly at room temperature, Then pass into the extruder through the main feed port of the twin-screw extruder, and pass 5-30 parts by weight of glass fiber into the extruder through the side feed port of the twin-screw extruder; Extrusion granulation, the processing conditions of extrusion granulation are: the temperature of the first zone is 240 ℃, the temperature of the second zone is 270 ℃, the temperature of the third zone is 270 ℃, the temperature of the fourth zone is 260 ℃, the temperature of the fifth zone is 260 ℃, the temperature of the sixth zone is 260°C, 270°C in the seventh zone, 270°C in the eighth zone, and 260°C in the ninth zone; the residence time of the material fed from the main feed port in the screw extruder is 2 minutes, ...

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Abstract

The invention discloses a creep-resistant polyamide composition and a preparation method thereof. The creep-resistant polyamide composition comprises the following components in parts by weight: (a) 23-98.5 parts of polyamide, (b) 1-75 parts of fiber and (c) 0.5-2 parts of assistant. The diameter of the (b) fiber is 9-17 mu m, and the length is 1-10 mm. The invention also provides a preparation method of the creep-resistant polyamide composition. The polyamide composition disclosed by the invention has favorable creep resistance, and especially has favorable creep resistance in a wet state.

Description

technical field [0001] The invention relates to a polyamide composition, in particular to a creep-resistant polyamide composition, a preparation method and a prepared product. Background technique [0002] Polyamide resin has excellent comprehensive properties such as high mechanical strength, heat resistance, self-lubricating property, excellent barrier performance and chemical corrosion resistance, and is widely used in machinery manufacturing, electronic appliances, transportation and other fields. It currently ranks first among the top five engineering plastics. Polyamide materials generally include: polyamide 6, polyamide 66, polyamide 610, polyamide 612, polyamide 46, polyamide 1010, polyamide 11, polyamide 12, polyamide 10T, etc. However, polyamide has high molding shrinkage and water absorption, which makes the dimensional stability of the prepared parts poor, which limits the use of polyamide. [0003] Modified polyamide can significantly improve the mechanical pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08K9/00C08K7/14C08K7/06B29B9/06B29C47/92B29C48/92
CPCB29B9/14B29B7/90B29C48/022
Inventor 冯德才袁志敏梁惠强谭麟袁绍彦吉继亮殷年伟
Owner KINGFA SCI & TECH CO LTD