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Improved high strength scratch-resistant polypropylene material and preparation method thereof

A polypropylene material, scratch-resistant technology, applied in the field of polypropylene materials, can solve the problems of short fiber retention length, low production efficiency, poor performance of metallocene polyethylene, etc., to enhance interface bonding force, improve production efficiency, improve The effect of mechanical strength

Inactive Publication Date: 2020-02-18
苏州炜隆灿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common method of basalt fiber reinforced polypropylene is to directly add reinforcing fillers, and obtain reinforced polypropylene composite materials through side-feed extrusion of the extruder, but the basalt fiber reinforced polypropylene composite materials obtained in this way, the fiber retention length Short, only about 0.2mm, resulting in poor comprehensive properties such as stretching, bending and impact
[0004] In summary, the existing problems in the prior art are: (1) In the preparation process of existing polypropylene materials, the metallocene polyethylene used has poor performance and low calcium carbonate activity; resulting in low strength and low production efficiency of the prepared polypropylene
[0005] (2) Most of the existing basalt fiber reinforced polypropylene methods are to directly add reinforcing fillers and extrude through the side of the extruder to obtain reinforced polypropylene composite materials, but the fibers of the basalt fiber reinforced polypropylene composite materials obtained in this way retain The length is short, only about 0.2mm, resulting in poor comprehensive properties such as stretching, bending and impact

Method used

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  • Improved high strength scratch-resistant polypropylene material and preparation method thereof
  • Improved high strength scratch-resistant polypropylene material and preparation method thereof
  • Improved high strength scratch-resistant polypropylene material and preparation method thereof

Examples

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preparation example Construction

[0038] Such as figure 1 As shown, the preparation method of the improved high-strength scratch-resistant polypropylene material provided by the embodiment of the present invention includes the following steps:

[0039] S101: At a high temperature of 120-150°C, mix and stir the compatibilizer, toughening agent, processing aid and calcium carbonate for 10-20 minutes, then add nano-silica, polyethylene terephthalate and modified Stir and mix the basalt fiber evenly to obtain primary mixture A.

[0040] S102: Add polypropylene, metallocene polyethylene, erucamide, and nano-silicon dioxide into a high-speed mixer and mix for 5-10 minutes to obtain a mixture B.

[0041] S103: Mix the primary compound A obtained in S101 with the compound B obtained in S102, add it to a twin-screw extruder, melt and extrude it in the twin-screw extruder, then gradually cool, air-cool and pelletize to obtain the improved High-strength scratch-resistant polypropylene material.

[0042] In S101 provid...

Embodiment 1

[0057] The improved high-strength scratch-resistant polypropylene material provided by Example 1 of the present invention consists of 40% polypropylene, 12% polyethylene terephthalate, 10% metallocene polyethylene, 8 % calcium carbonate, 5% erucamide, 13% modified basalt fiber, 5% toughening agent, 3%-6% compatibilizer, 3.5% nano-silica and 0.5% processing aid agent composition.

[0058] The preparation method of the improved high-strength scratch-resistant polypropylene material provided in Example 1 of the present invention comprises the following steps:

[0059] (1) Mix compatibilizer, toughening agent, processing aid and calcium carbonate at a high temperature of 120°C for 10 minutes, then add nano-silica, polyethylene terephthalate and modified basalt fiber Stir and mix evenly to obtain primary mix A.

[0060] (2) Add polypropylene, metallocene polyethylene, erucamide, and nano-silicon dioxide into a high-speed mixer and mix for 5 minutes to obtain mixture B.

[0061] ...

Embodiment 2

[0063] The improved high-strength scratch-resistant polypropylene material provided by Example 2 of the present invention consists of 41% polypropylene, 13% polyethylene terephthalate, 10% metallocene polyethylene, 9 % calcium carbonate, 5% erucamide, 10% modified basalt fiber, 5% toughening agent, 3.8% compatibilizer, 3% nano-silica and 0.2% processing aid.

[0064] The preparation method of the improved high-strength scratch-resistant polypropylene material provided by Example 2 of the present invention comprises the following steps:

[0065] (1) Mix compatibilizer, toughening agent, processing aid and calcium carbonate at a high temperature of 130°C for 15 minutes, then add nano-silica, polyethylene terephthalate and modified basalt fiber Stir and mix evenly to obtain primary mix A.

[0066] (2) Add polypropylene, metallocene polyethylene, erucamide, and nano-silicon dioxide into a high-speed mixer and mix for 8 minutes to obtain mixture B.

[0067] (3) Mix the primary co...

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Abstract

The invention belongs to the technical field of polypropylene materials, and discloses an improved high strength scratch-resistant polypropylene material and a preparation method thereof. The improvedhigh strength scratch-resistant polypropylene material is composed of polypropylene, polyethylene glycol terephthalate, metallocene polyethylene, calcium carbonate, erucyl amide, modified basalt fibers, a toughening agent, a compatilizer, nano silicon dioxide, and a processing aid. The strength of polypropylene is enhanced. High activity calcium carbonate can be prepared by a provided calcium carbonate preparation method, and thus the polypropylene preparation efficiency is improved. The surface of basalt fibers is modified so that the binding force of the interface between basalt fibers anda polypropylene matrix is strengthened. An LFT fiber infiltration preparation technology is applied to basalt fiber modified polypropylene, the length of fibers is controlled in a range of 10 to 15 mm, the length of fibers in the polypropylene matrix is long, and thus the mechanical strength of a product is enhanced.

Description

technical field [0001] The invention belongs to the technical field of polypropylene materials, and in particular relates to an improved high-strength scratch-resistant polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene, referred to as PP, is a colorless, odorless, non-toxic, translucent solid substance. Polypropylene (PP) is a thermoplastic synthetic resin with excellent performance, which is a colorless and translucent thermoplastic lightweight general-purpose plastic. With chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and good high wear-resistant processing properties, etc., polypropylene has been rapidly used in machinery, automobiles, electronic appliances, construction, textiles, and packaging since its inception. It has been widely developed and applied in many fields such as agriculture, forestry, fishery and food industry. In recent years, with the rapid developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/02C08L23/06C08K13/06C08K9/06C08K3/26C08K7/14C08K9/08C08K7/10C08K9/04C08K3/04C08K3/36
CPCC08K2003/265C08K2201/011C08L23/12C08L2205/035C08L67/02C08L23/06C08K13/06C08K9/06C08K3/26C08K7/14C08K9/08C08K7/10C08K9/04C08K3/042C08K3/36
Inventor 刘晓波
Owner 苏州炜隆灿科技有限公司
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