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Ultrahigh molecular weight polyethylene reinforced polypropylene composite material and preparation method thereof

A technology of ultra-high molecular weight and composite materials, which is applied in the field of ultra-high molecular weight polyethylene reinforced polypropylene composite materials and its preparation, can solve the problems of unfavorable transportation and handling of large-scale radome systems, large dielectric constant, and large signal loss, etc., to achieve Improve the interface bonding fastness, improve the degree of fusion, improve the effect of dispersion

Active Publication Date: 2021-12-24
重庆会通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current mainstream glass fiber reinforced polypropylene material has a dielectric constant above 2.4, which is difficult to further reduce
The dielectric constant is large, and the signal loss is also large; and the density of the material obtained from the glass fiber filling reinforcement system is also high, which is not conducive to the transportation and handling process of the large radome system. Therefore, a lower dielectric constant is prepared, and the comprehensive performance is excellent. The polypropylene composite material is of great significance

Method used

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  • Ultrahigh molecular weight polyethylene reinforced polypropylene composite material and preparation method thereof
  • Ultrahigh molecular weight polyethylene reinforced polypropylene composite material and preparation method thereof
  • Ultrahigh molecular weight polyethylene reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Dissolve 3 parts of silane coupling agent in 97 parts of organic solvent aqueous solution (the organic solvent aqueous solution is obtained by blending distilled water and methanol at a volume ratio of 1:1) to obtain a mixed solution; add 2 parts of porous nano-silica Stir evenly in 98 parts of the mixed solution to obtain a dispersion with a concentration of 2%;

[0042] (2) Put the ultra-high molecular weight polyethylene fiber into the dispersion liquid for ultrasonic infiltration for 30 minutes;

[0043] (3) Take out the infiltrated ultra-high molecular weight polyethylene fibers and dry them, and perform irradiation treatment. The radiation source is a cobalt source, and the irradiation dose is 50kGy to obtain the modified ultra-high molecular weight polyethylene fibers.

[0044] (4) Weigh each component according to the corresponding proportioning in Table 1, mix and mix polypropylene, compatibilizer, antioxidant, light stabilizer, lubricant, add twin-screw ex...

Embodiment 2

[0046] (1) Dissolve 5 parts of silane coupling agent in 95 parts of organic solvent aqueous solution (the organic solvent aqueous solution is obtained by blending distilled water and ethanol at a volume ratio of 1:1) to obtain a mixed solution; add 4 parts of porous nano-silica Stir evenly in 96 parts of the mixed solution to obtain a dispersion with a concentration of 4%;

[0047] (2) Put the ultra-high molecular weight polyethylene fiber into the dispersion liquid for ultrasonic infiltration for 30 minutes;

[0048] (3) Take out the infiltrated ultra-high molecular weight polyethylene fibers and dry them, and perform irradiation treatment. The radiation source is a cobalt source, and the irradiation dose is 80kGy to obtain the modified ultra-high molecular weight polyethylene fibers.

[0049] (4) Weigh each component according to the corresponding proportioning in Table 1, mix and mix polypropylene, compatibilizer, antioxidant, light stabilizer, lubricant, add twin-screw ext...

Embodiment 3

[0051] (1) Dissolve 8 parts of silane coupling agent in 92 parts of organic solvent aqueous solution (the organic solvent aqueous solution is obtained by blending distilled water and ethylene glycol at a volume ratio of 1:1) to obtain a mixed solution; 6 parts of porous nano-dioxide Silicon was added to 94 parts of the mixed solution and stirred evenly to obtain a dispersion with a concentration of 6%;

[0052] (2) Put the ultra-high molecular weight polyethylene fiber into the dispersion liquid for ultrasonic infiltration for 30 minutes;

[0053] (3) Take out the infiltrated ultra-high molecular weight polyethylene fibers and dry them, and perform irradiation treatment. The radiation source is a cobalt source, and the irradiation dose is 100kGy to obtain the modified ultra-high molecular weight polyethylene fibers.

[0054] (4) Weigh each component according to the corresponding proportioning in Table 1, mix and mix polypropylene, compatibilizer, antioxidant, light stabilizer...

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Abstract

The invention discloses an ultra-high molecular weight polyethylene reinforced polypropylene composite material and a preparation method thereof. The ultra-high molecular weight polyethylene reinforced polypropylene composite material comprises the following components in parts by weight: 66-88 parts of polypropylene; 10-30 parts of modified ultra-high molecular weight polyethylene fiber; 1-3 parts of a compatilizer; 0.1-0.4 part of an antioxidant; 0.5-1 part of a light stabilizer; and 0.2-0.6 part of a lubricant; the preparation method comprises the following steps: uniformly mixing polypropylene, the compatilizer, the antioxidant, the light stabilizer, the lubricant and the like, then adding the mixture into a double-screw extruder from a main feeding port, adding the ultrahigh molecular weight polyethylene fiber subjected to surface modification by porous nano silicon dioxide into the double-screw extruder from a side feeding port, and carrying out melting, extrusion and granulation, and obtaining the ultrahigh molecular weight polyethylene reinforced polypropylene composite material. The reinforced polypropylene composite material prepared by the invention has the characteristics of low density and high mechanical strength, meets the current requirements on light-weight products, also has the characteristics of low dielectric constant, low loss factor and the like, and meets the use characteristics of 5G antenna housing materials.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to an ultrahigh molecular weight polyethylene reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene is one of the five general-purpose plastics. Because of its high cost performance and excellent comprehensive performance, it is widely used in the fields of automobiles, home appliances and other daily necessities; especially in recent years, with the consideration of lightweight and environmental protection, polypropylene modified materials have also been gradually used. In the application field of 5G products, especially in the field of base stations, it plays an extremely important role. [0003] Low dielectric materials are conducive to better transmission of electromagnetic signals. Polypropylene material with low dielectric constant is regarded as an ideal material for the housing of 5G com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/06C08K9/06C08K7/26
CPCC08L23/14C08L2205/16C08L2207/068C08K2201/011C08L23/06C08K9/06C08K7/26
Inventor 李飞周海冉红川
Owner 重庆会通科技有限公司
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