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Warpage resistance nylon 6 composite material for vehicle air conditioning air door and preparation method thereof

A composite material, automotive air conditioning technology, applied in the direction of airflow control components, etc., can solve the problems of unstable product quality, easy warping of products, adverse effects of assembly, etc., to improve fluidity and dimensional stability, improve tensile strength, The effect of improving the appearance

Inactive Publication Date: 2009-11-18
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nylon materials used for automotive air-conditioning dampers are mostly glass fiber-reinforced modified nylon. Existing reinforced nylon has disadvantages such as easy warping and poor fluidity of the product, resulting in unstable dimensions and easy deformation of the injection product, which has a negative impact on the post-assembly of the product. Adverse effects, seriously affecting its function
In terms of formula, simply using glass fiber to strengthen, resulting in easy warping and poor fluidity. Even if minerals are added to improve warpage and fluidity, it will have a great negative impact on mechanical properties.
In terms of technology, volumetric feeding is mainly used to feed nylon, mineral powder and other additives at the same time, and long glass fiber is used for side feeding. This production process often makes the product quality unstable.

Method used

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  • Warpage resistance nylon 6 composite material for vehicle air conditioning air door and preparation method thereof
  • Warpage resistance nylon 6 composite material for vehicle air conditioning air door and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Nylon 6 chips (relative viscosity 2.7Pa·S) 61.5 parts by weight

[0034] Glass fiber (ECS301CL, purchased from Chongqing International Composite Materials Co., Ltd.) 24 parts by weight

[0035] Glass microspheres (3000CP, purchased from U.S. Porter Company) 8 parts by weight

[0036] 5 parts by weight of compatibilizer (polypropylene grafted maleic anhydride)

[0037] Antioxidant (antioxidant 1098: antioxidant 168=1: 2) 0.5 parts by weight

[0038] Coupling agent (γ-glycidyl etheroxypropyl trimethyloxysilane) 0.4 parts by weight

[0039] 0.6 parts by weight of lubricant (silicone powder)

[0040] Stir the nylon 6 slices, compatibilizer, antioxidant, coupling agent and lubricant in the above ratio in a high-speed mixer at a speed of 1000r / min for 1 minute, and the above-mentioned materials that have been mixed are weighed from the first section of the screw by weight loss. The barrel is added to the twin-screw extruder, and the glass beads are added to the twin-screw...

Embodiment 2

[0042] Nylon 6 chips (relative viscosity 2.5Pa·S) 64.9 parts by weight

[0043]Glass fiber (560, purchased from Zhejiang Jushi Group) 20 parts by weight

[0044] Glass microspheres (050-20-215, purchased from France Fitick Company) 10 parts by weight

[0045] Compatibilizer (EPDM grafted maleic anhydride) 4 parts by weight

[0046] Antioxidant (antioxidant 1098: antioxidant 168=1: 2) 0.5 parts by weight

[0047] Coupling agent (γ-glycidyl ether oxypropyl trimethyloxysilane) 0.3 parts by weight

[0048] Lubricant (ethylene-acrylic acid copolymer) 0.3 parts by weight

[0049] Stir the nylon 6 slices, compatibilizer, antioxidant, coupling agent and lubricant in the high-speed mixer at a speed of 1000r / min for 1 minute in the above ratio, and the mixed above-mentioned materials are weighed from the first section of the screw by weight loss. The barrel is added to the twin-screw extruder, the glass beads are added to the twin-screw extruder from the fourth section of the screw ...

Embodiment 3

[0051] Nylon 6 chips (relative viscosity 2.6Pa·S) 62.65 parts by weight

[0052] Glass fiber (560, purchased from Zhejiang Jushi Group) 24 parts by weight

[0053] Glass microspheres (3000CP, purchased from U.S. Potter Company) 6 parts by weight

[0054] Compatibilizer (ethylene-octene copolymer grafted maleic anhydride) 6 parts by weight

[0055] Antioxidant (antioxidant 1098: antioxidant 168=1: 2) 0.4 parts by weight

[0056] Coupling agent (γ-aminopropyltriethoxysilane) 0.5 parts by weight

[0057] Lubricant (TAF) 0.45 parts by weight

[0058] Stir the nylon 6 slices, compatibilizer, antioxidant, coupling agent and lubricant in the high-speed mixer at a speed of 1000r / min for 1 minute in the above ratio, and the mixed above-mentioned materials are weighed from the first section of the screw by weight loss. The barrel is added to the twin-screw extruder, the glass beads are added to the twin-screw extruder from the fourth section of the screw barrel through the weight lo...

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Abstract

The invention discloses a warpage resistance nylon 6 composite material for a vehicle air conditioning air door and a preparation method thereof. The composite material is composed of nylon 6 chips, fiberglass, glass microballoons, compatilizer, antioxidizer, a coupling agent and a lubricating agent. The preparation method includes the following steps: (1) after being uniformly mixed, the nylon 6 chips, the compatilizer, the antioxidizer, the coupling agent and the lubricating agent are added into a double screw extruder on the first segment of a barrel, the glass microballoons are added by a side feeding machine on the fourth segment of the barrel, and the fiberglass is added by the side feeding machine on the sixth segment of the barrel; and (2) after being extruded outside, the prepared particles are dried and cooled, and finally the warpage resistance nylon 6 composite material for the vehicle air conditioning air door can be obtained. The warpage resistance nylon 6 composite material prepared by the invention has the advantages of extremely high flexural modulus, high fluidity and favorable dimension stability, solves the problem of warpage of a large finished piece caused by material shrinkage, and guarantees the assembly of the finished piece.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a warpage-resistant nylon 6 composite material that can be used for an air-conditioning damper of an automobile and a preparation method thereof. Background technique [0002] Nylon 6 has good physical and mechanical properties, such as high tensile strength, excellent wear resistance, good impact resistance, and outstanding chemical and oil resistance. It is the most widely used variety among the five general engineering plastics. Due to the special environment in which the automotive air-conditioning damper is used, the materials used are required to have high comprehensive performance. Nylon materials used for automotive air-conditioning dampers are mostly glass fiber-reinforced modified nylon. Existing reinforced nylon has disadvantages such as easy warping and poor fluidity of the product, resulting in unstable dimensions and easy deformation of the inj...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K13/04C08K7/14C08K7/20F24F13/10B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/9259B29C2948/92676B29C2948/92828B29C2948/92866B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 王云帆高松余洋诸泉蒋文真
Owner 合诚技术股份有限公司
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