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Spray-free polypropylene material with marble black and white grains and preparation method thereof

A polypropylene material, spray-free technology, applied in the field of spray-free polypropylene material and its preparation, can solve the problems of inability to form black spots, black clouds and wire drawing, and achieves easy realization of process operation, reduced complexity, and simple preparation method. Effect

Active Publication Date: 2018-09-21
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polypropylene material is mainly caused by speckled black pigments to form the marble effect, and its base material is aramid fiber. Black spots of different sizes will appear after twin-screw shearing. During the process of twin-screw extrusion and injection molding machine injection, Aramid fiber can only be shredded, but not melted, and because its length is 0.2-2.0mm and diameter is 0.2-0.6mm, it can only form black spots smaller than this size on the surface of the product, but cannot form black spots, Black cloud and brushed effect

Method used

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  • Spray-free polypropylene material with marble black and white grains and preparation method thereof
  • Spray-free polypropylene material with marble black and white grains and preparation method thereof
  • Spray-free polypropylene material with marble black and white grains and preparation method thereof

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preparation example Construction

[0037] The preparation method of the spray-free polypropylene material with marble black and white texture comprises the following steps:

[0038] 1) Preparation of matrix PP: Stir and mix barium sulfate and additives first, then add PP resin and toughening agent and stir and mix. The mixture is extruded through a twin-screw extruder and granulated to obtain matrix PP;

[0039] 2) Preparation of black or white masterbatch: After the lubricant is heated to melt, add black pigment or white pigment respectively, stir and mix, and grind to obtain black or white abrasive respectively; mix matrix resin and antioxidant with black or white respectively The grinding material is stirred and mixed, and the obtained black or white mixture is extruded through a twin-screw extruder, and granulated to obtain black masterbatch or white masterbatch;

[0040] 3) Injection molding: Blend the matrix PP, black masterbatch and white masterbatch, and inject molding to obtain the above-mentioned spra...

Embodiment

[0049] 1. Preparation of matrix PP

[0050] Examples of raw materials used to prepare the base PP are as follows:

[0051] PP, Z30S, Zhenhai Refining & Chemical;

[0052] Modified precipitated barium sulfate, AB-03N, commercially available;

[0053] Epoxy resin 7072, commercially available;

[0054] Antioxidant, Irganox 1010, Irganox 168, BASF;

[0055] EBS, produced in Malaysia, commercially available;

[0056] Activated calcium carbonate, Bai Yanhua, Jiangxi Gaofeng Chemical Industry.

[0057] In terms of mass percentage, in the matrix PP, PP accounts for 85%, modified precipitated barium sulfate accounts for 15%, epoxy resin 7072 accounts for 2%, antioxidant 1010 accounts for 0.5%, antioxidant 168 accounts for 0.5%, and EBS accounts for 0.8% %, active calcium carbonate accounts for 1.2%.

[0058] The preparation method is as follows: After the modified precipitated barium sulfate and other additives are passed through the high-speed mixer, they are put into the high-s...

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Abstract

The invention discloses a spray-free polypropylene material with marble black and white grains and a preparation method thereof. The spray-free polypropylene material is prepared from, by mass, 99.2-99.6% of matrix, 0.2-0.4% of black master batches and 0.2-0.4% of white master batches. The invention further discloses the preparation method of the spray-free polypropylene material with marble blackand white grains. Compared with the prior art, due to the obtained black or white master batches, the complexity of a traditional technology matrix is lowered, pinholes or hard spots are prevented from appearing in the surface of the highlight PP matrix resin, and the size, number and the like of white and black lines are effectively regulated by adjusting the ratio of black master batches to white master batches and controlling the injection molding temperature. The preparation method is simple, the technology operation is easy to implement, and the obtained PP composite material can be usedfor the fields of individualized home appliance shells, kitchen appliances, automobile materials and the like with the strict requirement for appearances.

Description

technical field [0001] The invention relates to a spray-free polypropylene material with marble black and white texture and a preparation method thereof. Background technique [0002] Polypropylene (PP) resin is a low-cost, light-weight, high-performance polymer material with excellent properties such as easy processing and good surface gloss. It is widely used in electronics, home appliances, automobiles, construction and daily necessities etc. However, the shrinkage rate of polypropylene resin itself is large, and the texture of the soft rubber is not high, which leads to problems such as cheap feeling when it is used in many products such as home appliance casings, kitchen appliances, and automotive materials. [0003] At this stage, this problem is usually solved by methods such as spraying and electroplating. Through spraying and electroplating, although it has its positive side, such as protecting the substrate, weather resistance, scratch resistance; covering flow m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L67/02C08K3/04C08K3/22C08J3/22
CPCC08J3/226C08J2323/12C08J2423/14C08J2467/02C08K3/04C08K2003/2241
Inventor 张翼翔蔡智勇张宗豪杨海民陈锐彬沈旭渠
Owner GUANGDONG JUSHI CHEM CO LTD
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