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A kind of modified polypropylene material and its preparation method and application

A polypropylene material and polypropylene technology, applied in the field of modified polypropylene material and its preparation, can solve the problems of low melt elongation, low melt strength, floating fibers on the surface, etc., and achieve high melt elongation and fracture. The effect of high elongation and less floating fiber

Active Publication Date: 2022-08-09
KINGFA SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the polyolefin materials suitable for blow molding and blister use are basically pure HDPE or PP resins. These resins can be molded well, but they still need to be improved in terms of heat resistance and strength.
In the industry, the high strength and high rigidity of glass fibers are usually used to improve product strength and heat resistance, but conventional glass fiber reinforced polypropylene materials have low melt strength, low melt elongation, surface floating fibers and poor toughness And other issues

Method used

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  • A kind of modified polypropylene material and its preparation method and application
  • A kind of modified polypropylene material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7 and comparative example 1-7

[0039] Example 1-7 and Comparative Example 1-7: Preparation of Modified Polypropylene Material

[0040] Weigh each component according to the formula content, and mix all components except the reinforcing fiber uniformly, then add the mixture to the main feeding system of the twin-screw extruder; at the same time, add the reinforcing fiber to the side feeding system of the twin-screw extruder The modified polypropylene material is prepared by melt blending and extrusion granulation through a twin-screw extruder.

[0041] The position of the extruder side feeding system can be adjusted, and the reinforcing fibers can enter the extruder screw in the first to tenth zones, and be added after the extruder die, and then directly combined with the polypropylene melt. Reinforcing fibers with different lengths and content distributions can be obtained by adjusting the position where the reinforcing fibers enter the extruder screw.

[0042] The temperature of the first to second zone o...

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Abstract

The invention discloses a modified polypropylene material and a preparation method and application thereof, comprising: a, 20-80 parts of polypropylene resin; b, 1-20 parts of a compatibilizer; c, 10-40 parts of reinforcing fibers ; The reinforcing fiber includes component I, component II and component III: component I: is composed of reinforcing fibers with a length of less than 0.1 mm, which accounts for 10-20% of the number of reinforcing fibers; component II : Consists of reinforcing fibers with a length of 0.1mm‑0.3mm, which account for 50‑75% of the reinforcing fibers; Component III: Consists of reinforcing fibers with a length of 0.4mm‑0.8mm, which account for 50‑75% of the reinforcing fibers The root percentage is 5‑40%. By controlling the length and content distribution of the reinforcing fibers in the modified polypropylene material, the invention has high surface gloss, less floating fibers, high elongation at break, Good toughness, which is conducive to testing such as falling balls; and high melt elongation, mainly suitable for blow molding and blister molding and other occasions.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a modified polypropylene material and a preparation method and application thereof. Background technique [0002] Polypropylene material is currently the most widely used polymer material. It has the advantages of excellent processing performance and mechanical properties, and is widely used in daily life and industrial production fields, such as: agricultural film, wire and cable, communication, housing construction and aviation manufacturing. Wait. [0003] At present, the polyolefin materials suitable for blow molding and blister molding are basically HDPE or PP pure resins. These resins can be molded well, but they still need to be improved in terms of heat resistance and strength. The industry usually uses the high strength and high rigidity of glass fiber to improve product strength and heat resistance, but conventional glass fiber reinforced polypropylene mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/00C08L51/06C08K7/14C08K7/10
CPCC08L53/00C08K2201/004C08K2201/014C08K2201/003C08L51/06C08K7/14C08K7/10
Inventor 陆湛泉黄险波叶南飚陈平绪程文建程书文姜向新杨霄云
Owner KINGFA SCI & TECH CO LTD
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