Preparation method of polypropylene material

A polypropylene material and polypropylene technology, applied in the field of fiber reinforced polypropylene materials and preparation, can solve the problems of reduced elongation of polypropylene, difficult to prepare, small thickness, reduced electrical breakdown performance, etc., and achieve high extensibility, step Good covering performance and the effect of improving dielectric strength

Inactive Publication Date: 2017-09-08
温州市赢创新材料技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The dielectric constant of polypropylene is 2.25-2.50 at room temperature (tested at 106Hz), and the cost is low, but it has the problems of low rigidity and poor heat resistance. Therefore, it is often modified with glass fiber to improve the mechanical properties of the material. Strength and heat resistance, but the elongation of glass fiber reinforced polypr

Method used

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  • Preparation method of polypropylene material
  • Preparation method of polypropylene material
  • Preparation method of polypropylene material

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preparation example Construction

[0053] The preparation method of the above-mentioned reinforced polypropylene material, the steps are as follows:

[0054] (1) According to the proportion, add polypropylene, compatibilizer, coupling agent, antioxidant, doped silica, and microfoaming polymer into the high mixer in sequence, and mix for 4 minutes to obtain a granular powder mixture.

[0055] (2) Use co-rotating parallel twin-screw extruder equipment, the length-to-diameter ratio of the twin-screw extruder is 48:1, and the twin-screw extruder is equipped with lateral forced feeding along the extrusion direction Section 7 barrel, Section 6 Asbestos heat insulation gaskets with a thickness of 3mm are set between the section and the 7th section, and the screw combination at the barrel position of the 1st to 6th section along the extrusion direction adopts the following screw combination (combination a): 36 / 36, 36 / 36, X90 / 90, X90 / 90, GD90 / 45, 56 / 56, 56 / 56, 90 / 5-45°, 90 / 5-45°, 56 / 56, 90 / 5-45°, 90 / 5 -45°, 56 / 56, 90 / ...

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Abstract

The invention provides a special fiber-reinforced polypropylene material and a preparation method and application thereof. The special fiber-reinforced polypropylene material comprises 50-90 parts of polypropylene, 1.0-2.0 parts of a compatilizer, 0.3-0.5 part of a coupling agent, 0.5-1.0 part of an antioxidant, 0.5-0.8 part of doped silicon dioxide, 0.5-3.0 parts of nano-montmorillonite and 0.5-2.0 parts of a micro-foamed polymer. A twin-screw extruder is adopted to extrude, and the polypropylene material which is low in dielectric constant and excellent in electric breakdown resistance is prepared by means of a special screw combination and a fiber adding position technology. A polypropylene film with a special application is prepared from the material. Meanwhile, plasma treatment is performed on the surface of the film. The film can be applied to special parts in special fields such as military industry and micro-electronic industry.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a fiber-reinforced polypropylene material, a preparation method and an application thereof. Background technique [0002] With the development of VLSI, the interconnection RC delay is getting more and more serious, which seriously restricts the performance of high-speed operation. Due to the continuous shrinking of the thickness of the traditional insulating layer silicon dioxide, the self-capacitance increases and the reliability of the circuit is reduced. In order to To solve this problem, the microelectronics industry will use materials with low dielectric constant and high resistance to electrical breakdown to replace traditional silicon dioxide insulating materials. The dielectric constant of polypropylene is 2.25-2.50 at room temperature (tested at 106Hz), and the cost is low, but it has the problems of low rigidity and poor heat resistance. Therefore,...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08L61/16C08K13/02C08K3/36C08K3/34C08J5/04C08J9/14C08J9/12B29B9/06B29C47/40B29C47/60B29C47/92B29C69/02B29C59/14B29K105/08B29K23/00B29L7/00B29C48/92
CPCB29B9/06B29C59/14B29C69/02B29K2023/12B29K2105/08B29L2007/00B29C48/40B29C48/505B29C48/92B29C2948/92704C08J5/046C08J5/18C08J9/122C08J9/141C08J2203/06C08J2203/08C08J2203/22C08J2353/00C08J2461/16C08K2201/003C08K2201/011C08K2201/014C08L53/00C08L2203/16C08L2205/08C08L2205/16C08L2207/53C08L61/16C08K13/02C08K3/36C08K3/346
Inventor 方万漂朱雪梅朱进平方少章王爱绿
Owner 温州市赢创新材料技术有限公司
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