Modified TPU (thermoplastic polyurethane) composite material for vehicle-mounted charging spring wires for electrical vehicles and preparation method thereof

A technology for on-board charging and electric vehicles, which is applied in the field of polymer materials, can solve the problems of poor heat resistance, poor elasticity and hand feeling, and high temperature resistance, and achieve the improvement of toughness and decrease of heat resistance, and the improvement of impact strength and fracture toughness , Good effect of high temperature resistance

Active Publication Date: 2014-11-05
GUANGDONG OMG TRANSMITTING TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] TPU is becoming more and more popular because of its superior performance and environmental protection concept. At present, wherever PVC is used, TPU can become a substitute for PVC, but the disadvantage of TPU is: the thermoplastic polyurethane used for seals. The temperature resistance is only about 60°C, which cannot meet the product performance and market demand
[0005] CN101838456A discloses a heat-resistant thermoplastic polyurethane and its production process. The thermoplastic polyurethane is prepared from PCL-1000, PCL-2000, MDI, HQEE, TMP, and DK2, and can withstand high temperatures of up to 100°C. However, its Tensile strength and elongation at break and outdoor UV radiation aging resistance are poor
Although the alloy has strong anti-aging ability, its elasticity and high temperature resistance are poor, so it is not suitable for the application of electric vehicle charging spring wire
[0007] CN103467700A provides a kind of bulk rigid foam polyurethane and its production method, and raw material comprises polyisocyanate, polyol, catalyst, flame retardant, foaming agent, foam stabilizer, antioxidant, ultraviolet absorber, and the obtained bulk hard foam Polyurethane foam has the advantages of low density and uniform distribution, high compressive strength, good dimensional stability, and good flame retardancy. destruction, which greatly limits its application
[0008] In the above-mentioned literature related to modified TPU mixed materials, there are generally poor elasticity and hand feeling, high temperature resistance, polyester materials are precipitated in high temperature environments, polyether materials are not easy to shape, and light aging (UV) performance is not good. Well, after a long time of use, it is easy to age and be damaged, and when it is made into a spring wire, it has defects such as poor springback, which greatly restricts its application in the field of electric vehicle on-board chargers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Prepare raw materials according to the following parts by weight:

[0041] 65 parts of thermoplastic polyurethane; 23 parts of thermoplastic polyester; 5 parts of SBS; 5 parts of crosslinking agent; 0.05 part of antioxidant; 0.45 part of ultraviolet light absorber; 1.5 parts of stabilizer.

[0042] Wherein the thermoplastic polyurethane is a polyether type thermoplastic polyurethane elastomer; the thermoplastic polyester is butylene terephthalate (PBT); the SBS is 792 produced by Yueyang Petrochemical; the crosslinking agent is o-phthalate Diallyl diformate; The antioxidant is antioxidant 168; The ultraviolet absorber is 2-(5-chloro-2-benzenetriazolyl)-6-tert-butyl-4-methyl Phenol; the stabilizer is zinc stearate.

[0043] (2) each material is mixed in a high mixer, and then melted and extruded granulated in a combined twin-screw extruder to obtain the modified TPU mixed material for the vehicle-mounted charging spring wire of an electric vehicle of the present inv...

Embodiment 2

[0055] (1) Prepare raw materials according to the following parts by weight:

[0056] 70 parts of thermoplastic polyurethane; 15 parts of thermoplastic polyester; 8 parts of SBS; 6 parts of crosslinking agent; 0.5 part of antioxidant; 0.3 part of ultraviolet light absorber; 0.2 part of stabilizer.

[0057] Wherein said thermoplastic polyurethane is a polyester type thermoplastic polyurethane elastomer; said thermoplastic polyester is butylene terephthalate (PBT); said SBS is 3540 produced by Li Changrong of Taiwan; said cross-linking agent is o-phthalate Diallyl diformate; the antioxidant is antioxidant 1010; the ultraviolet absorber 2-[2-hydroxyl-3,5-bis(1,1-dimethylpropylphenyl)] -2H-benzotriazole; the stabilizer is ethylene stearamide.

[0058] (2) each material is mixed in a high mixer, and then melted and extruded granulated in a combined twin-screw extruder to obtain the modified TPU mixed material for the vehicle-mounted charging spring wire of an electric vehicle of t...

Embodiment 3

[0069] (1) Prepare raw materials according to the following parts by weight:

[0070] 68 parts of thermoplastic polyurethane; 15 parts of thermoplastic polyester; 8 parts of SBS; 8 parts of crosslinking agent; 0.3 part of antioxidant; 0.3 part of ultraviolet light absorber; 0.4 part of stabilizer.

[0071] Wherein said thermoplastic polyurethane is a polyether type thermoplastic polyurethane elastomer; said thermoplastic polyester is butylene terephthalate (PBT); said SBS is 3540 produced by Li Changrong of Taiwan; said crosslinking agent is polynitrogen Propidine crosslinking agent SAC-100; the antioxidant is antioxidant 168; the ultraviolet absorber is 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzo Triazole; the stabilizer is silicon copper powder.

[0072] (2) each material is mixed in a high mixer, and then melted and extruded granulated in a combined twin-screw extruder to obtain the modified TPU mixed material for the vehicle-mounted charging spring wire of an electric v...

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Abstract

The invention relates to a modified TPU (thermoplastic polyurethane) composite material for vehicle-mounted charging spring wires for electrical vehicles and a preparation method thereof. The modified TPU composite material comprises the following components in parts by weight: 65-75 parts of thermoplastic polyurethane, 15-30 parts of thermoplastic polyester, 5-10 parts of SBS (styrene-butadiene-styrene), 5-10 parts of a crosslinking agent, 0.05-1 part of an antioxidant, 0.2-1 part of an ultraviolet absorber, and 0.2-2 parts of a stabilizer. The preparation method comprises the steps of mixing the components above in proportion by using a high-speed mixer, extruding the obtained mixture by using a double-screw extruder, and granulating the obtained product. The modified TPU composite material for vehicle-mounted charging spring wires for electrical vehicles prepared according to the invention has the characteristics of high elongation, high elasticity, high temperature resistance, and outdoor UV radiation aging resistance, and is good in processing and molding, and applicable to the outdoor usage of charging vehicles.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a modified TPU mixed material and a preparation method thereof, in particular to a modified TPU mixed material for electric vehicle vehicle-mounted charging spring wires and a preparation method thereof. Background technique [0002] The full name of polyurethane is polyurethane, and its English name is polyurethane. It is a general term for macromolecular compounds containing repeated carbamate groups in the main chain. It is formed by addition polymerization of organic diisocyanate and dihydroxy or polyhydroxy compound. [0003] Thermoplastic polyurethane is a kind of thermoplastic TPU elastomer. Because of its good elasticity, good physical properties and various mechanical strengths, it is widely used in injection, extrusion, calendering and dissolving into solution resins. It is often used by plastic processing industry Plastic materials, the products made of whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/08C08L67/02C08L53/02C08K5/134C08K5/526C08K5/098C08K5/3475C08K5/12C08K5/20
Inventor 魏玲徐志刚刘瑶勋
Owner GUANGDONG OMG TRANSMITTING TECH CO
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