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A modified resin and its application, as well as a two-color injection molded part and its preparation method

A modified resin and two-color injection molding technology, applied in the field of injection molding, can solve problems such as easy yellowing, expansion of unfavorable application range, and poor heat resistance of PC materials.

Active Publication Date: 2021-01-08
NINGBO BULL ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in related technologies, although adding a flow modifier to the two-shot material can improve the fluidity of the two-shot material, it will also affect other properties of the two-shot material, which is not conducive to the expansion of the application range.
For example, the two-shot material used in the patent application document with the patent application number 201611247895.4 is a PC / ABS composite material. The role of ABS is to improve the fluidity of the material so as to reduce its injection temperature and ensure the inner injection temperature during the two-color injection molding process. 40℃ lower than the injection molding temperature of the outer layer, but the addition of ABS makes the heat resistance of the PC material worse, and yellowing and other phenomena are prone to occur during the material injection molding and product use

Method used

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  • A modified resin and its application, as well as a two-color injection molded part and its preparation method
  • A modified resin and its application, as well as a two-color injection molded part and its preparation method
  • A modified resin and its application, as well as a two-color injection molded part and its preparation method

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preparation example Construction

[0059] In the fourth aspect, an embodiment of the present invention provides a method for preparing a two-color injection molded part as described above, see figure 1 ,include:

[0060] Step 1) Injection molding the first material to obtain the first color layer;

[0061] Step 2) Injecting a second material onto at least one side of the first color layer to obtain the second color layer.

[0062] The embodiment of the present invention provides a method for preparing a two-color injection molded part. By using a modified resin as a two-shot material, since the modified resin uses acrylic resin / montmorillonite nanocomposite microspheres as a flow modifier, on the one hand , the acrylate resin itself has a low melting point and acts as a flow modifier; on the other hand, the acrylic resin / montmorillonite nanocomposite microspheres can be better dispersed in the In the resin matrix, rolling friction is formed between the resin matrix, which greatly reduces the friction between ...

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Abstract

The invention relates to the technical field of injection molding and in particular relates to a modified resin and application thereof as well as a two-color injection molding part and a preparationmethod of the two-color injection molding part. A certain toughening effect can be achieved when the liquidity of the modified resin is improved, the thermal stability of the modified resin is improved, and the application range of the modified resin is widened. The modified resin provided by the embodiments of the invention comprises 80-90 weight parts of a resin matrix and 8-12 weight parts of aflow modifier, wherein the flow modifier refers to acrylic resin / montmorillonoid nano composite microspheres. The modified resin provided by the embodiment of the invention is used for preparing thetwo-color injection molding part.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a modified resin and its application, a two-color injection molded part and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, injection molding products such as switch sockets are not only satisfied with daily use functions, but also have higher and higher requirements for their appearance. When consumers purchase injection molding products such as switch sockets, they tend to prefer Products with gorgeous and rich appearance and diversified colors. [0003] The two-color injection molding process can realize the diversification of the colors of injection molding products, and compared with the traditional spraying process, it has the characteristics of low cost, high quality and high aesthetics. At present, in the two-shot injection molding process, in order to avoid the erosion of the two-shot material on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L33/04C08K9/10C08K3/34B29C45/16
CPCB29C45/16C08L69/00C08L2201/08C08L2205/035C08L2205/18C08L2207/53C08L33/04C08K9/10C08K3/346
Inventor 孔德玉申会员何洋李洋洋
Owner NINGBO BULL ELECTRIC CO LTD
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