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Polypropylene composition and preparation method thereof

A polypropylene composition and composition technology, applied in the field of polypropylene composite materials, can solve the problems of high static electricity, explosion, and easy accumulation of static electricity in insulating materials, etc., and achieve low resistivity, wide application, and excellent antistatic ability Effect

Inactive Publication Date: 2018-02-16
夏杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene has a high dielectric coefficient and is suitable for making electrical insulation products. However, polypropylene has a high degree of static electricity, and the prepared insulating material is easy to accumulate static electricity, which may affect the normal operation of instruments and equipment, and sparks generated by static electricity discharge points may ignite some flammable materials. , and even cause an explosion

Method used

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  • Polypropylene composition and preparation method thereof
  • Polypropylene composition and preparation method thereof
  • Polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The present invention also provides a method for preparing the above-mentioned composition, which is mixed in the form of a double composition of A composition and B composition. The A composition includes polypropylene, conductive carbon black, conductive grease, coupling agent, antioxidant, The B composition includes polypropylene, a coupling agent, an antioxidant, and glass fiber; the weight ratio of the A composition to the B composition is 1-10:1.

[0048] Preferably, the weight ratio of the composition A to the composition B is 2-5:1.

[0049] In the preparation method of the polypropylene composition of the present invention, the raw materials used are divided into two parts, granulated separately, and then mixed for use, and the obtained final product has good antistatic performance. And by mixing and granulating polypropylene, conductive carbon black, conductive grease, coupling agent, and antioxidant as A composition, and mixing and granulating polypropylene, ...

Embodiment 1

[0056] Example 1 Preparation Example

[0057] 1) 56 parts by weight of polypropylene, 9.8 parts by weight of conductive carbon black, 0.4 parts by weight of conductive grease, 0.3 parts by weight of coupling agent, and 0.2 parts by weight of antioxidant, which are the raw materials of composition A, were mixed evenly and passed through a twin-screw extruder Heating and melting, cooling, granulation, drying;

[0058] 2) Mix 23 parts by weight of polypropylene, 0.2 parts by weight of coupling agent, 0.1 parts by weight of antioxidant, and 10 parts by weight of glass fiber, which are the raw materials of composition B, mix them evenly, heat and melt them through a twin-screw extruder, cool them, and granulate ;

[0059] 3) Mix A composition and B composition evenly, the weight ratio of A composition and B composition is 2:1, heat and melt through a single-screw extruder, the temperature of heating and melting is 200-210°C, pass The high-pressure equipment is quickly injected in...

Embodiment 2

[0060] Embodiment 2 Antistatic molded tube performance testing

[0061] The antistatic molded tube prepared in Example 1 is subjected to performance testing, and the testing items, testing methods and results are shown in the following table:

[0062]

[0063] It can be seen from the above table that the antistatic molded tube prepared by the present invention has excellent performance, low surface resistance, good electrical conductivity, can prevent harm caused by static electricity, and has a wide range of applications.

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PUM

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Abstract

The invention discloses a polypropylene composition, which comprises the following components in parts by weight: 70-110 parts of polypropylene, 3-15 parts of conductive carbon black, 0.1-10 parts ofconductive grease, 3-20 parts of glass fiber, 0.1-10 parts of a coupling agent, and 0.1-5 parts of an antioxidant. The polypropylene composition provided by the invention is added with the componentssuch as the conductive carbon black, the conductive grease, the glass fiber, the coupling agent, the antioxidant and the like, and the resistivity of the prepared polypropylene composition is greatlyreduced through careful proportioning, so that the polypropylene composition has excellent antistatic capability and is widely applied.

Description

technical field [0001] The application relates to the field of polypropylene composite materials, in particular to a polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin produced by the polymerization of propylene. Polypropylene is heat-resistant, corrosion-resistant, and stable to most chemical reagents, and is suitable for the preparation of chemical pipes and fittings. Polypropylene has a high dielectric coefficient and is suitable for making electrical insulation products. However, polypropylene has a high degree of static electricity, and the prepared insulating material is easy to accumulate static electricity, which may affect the normal operation of instruments and equipment, and sparks generated by static electricity discharge points may ignite some flammable materials. , and even cause an explosion. Contents of the invention [0003] In order to solve the above-mentioned technical probl...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L91/00C08K13/04C08K7/14C08K3/04C08K5/54C08K5/10C08K5/18C08K5/134
CPCC08L23/12C08L2201/04C08L91/00C08K13/04C08K7/14C08K3/04C08K5/54C08K5/10C08K5/18C08K5/1345
Inventor 夏杰
Owner 夏杰