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A kind of preparation method of automobile door handle

A technology for door handles and automobiles, which can be used in household appliances, other household appliances, household components, etc., and can solve the problems of insufficient adhesion between plastic substrates and nickel-plated layers.

Active Publication Date: 2020-10-23
NINGBO SHUAITELONG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the defect that the plastic substrate of the current automobile door handle and the nickel-plated layer have insufficient adhesion, modify and graft bisphenol A type epoxy resin on the surface of the handle plastic blank, and through secondary nickel plating, with Improve the bonding force between the plastic substrate and the nickel-plated layer, and improve the aesthetics and service life of the door handle

Method used

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  • A kind of preparation method of automobile door handle

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preparation example Construction

[0020] The preparation method of automobile door handle of the present invention comprises the following steps:

[0021] 1) Injection molding PC and ABS composite materials into the mold cavity to obtain the door handle blank;

[0022] In step 1), PC and ABS composite material are German Bayer T65 products, and the handle in the past all is to use the T45 product of Bayer, and the T65 product that the present invention uses, PC content is high, and the composite system of PC and ABS is more uniform. Dry the purchased T65 product in a dehumidification dryer to improve the stability of raw materials. Then put it into a screw injection molding machine, melt and blend, inject the melt into the mold cavity of the handle mold, go through the process of cooling and solidification, and demold to obtain the blank of the car door handle. The screw speed is 40-70rmp, and the barrel temperature of the injection molding machine is divided into four zones: inlet temperature 250-285°C, fron...

Embodiment 1

[0031] The preparation method of the automobile door handle of the present embodiment comprises the following steps:

[0032] 1) Dry the purchased German Bayer T65 product and put it into a screw injection molding machine, melt and blend it, inject the melt into the cavity of the handle mold, cool and solidify, and demould to obtain the door handle blank. The screw speed is 50rmp, and the barrel temperature of the injection molding machine is divided into four zones: the inlet temperature is 260°C, the front zone temperature is 265°C, the middle zone temperature is 270°C, and the rear zone temperature is 240°C. The injection molding pressure was 15,000 psi, the holding pressure was 65% of the injection molding pressure, the holding time was 3 minutes, and the injection mold temperature was 120°C.

[0033] 2) Soak the blank in 3% bisphenol A epoxy resin ethanol solution for 4 hours, then take it out and put it into the plasma reaction device, vacuumize it, and feed carbon dioxide...

Embodiment 2

[0036] The difference between embodiment 2 and embodiment 1 is that the ethanol solution concentration of bisphenol A epoxy resin in embodiment 2 is 0.3%, and the others are the same as embodiment 1, so they are not repeated here.

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Abstract

The invention belongs to the technical field of car parts and relates to a preparation method of a car door handle. The preparation method comprises the following steps that (1) a PC and ABS compositeis injected into a mould cavity so that a car door handle blank is obtained; (2) the car door handle blank is arranged in a bisphenol A type epoxy resin solution and then taken out to be put in a plasma reaction device and vacuumized, gas is supplied into the plasma reaction device, and surface modification treatment is carried out so that a surface modified blank is obtained; and (3) the surfacemodified blank is subjected to primary electronickelling, baking, then secondary electronickelling and drying, so that the car door handle is obtained.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and relates to a method for preparing an automobile door handle. Background technique [0002] Traditional car door handles are hardware products, which refer to handles made of iron, steel, aluminum and other metals through forging, rolling, cutting and other physical processing. However, handles made of this material are expensive and heavy. At present, most of the door handle products on the market use plastic materials instead of metal, and use decorative plastic materials such as PC, PMMA, ABS, PA, etc. to replace metal materials. However, the existing car door plastic handles have poor mechanical strength and fatigue resistance, low surface hardness, and limited wear resistance, while car door handles are parts that are frequently used in cars and are easily scratched, and are easily scratched after long-term use. Scuffing damage or other wear and tear during normal use requires nickel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/17C25D5/14C25D5/56B29L31/30B29K69/00B29K55/02
CPCB29C45/0001B29C45/1769B29K2055/02B29K2069/00B29L2031/3029C25D5/14C25D5/56
Inventor 吴志光吴晓杰江华侨
Owner NINGBO SHUAITELONG GRP CO LTD
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