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High-modulus and low-dielectric-constant basalt fiber enhanced PC (polycarbonate) material and preparation method thereof

A technology of basalt fiber and low dielectric constant, which is applied in the field of high modulus and low dielectric constant basalt fiber reinforced PC material and its preparation, can solve the problems of poor compatibility of basalt fiber, weakening effect of modification and poor toughness, etc. Achieve the effect of good surface finish, broaden the application field, and excellent comprehensive performance

Inactive Publication Date: 2019-08-30
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In PC and basalt fiber composite materials, due to the smooth surface of basalt and few surface active sites, the compatibility between basalt fiber and PC is poor, the modification and strengthening effect on PC is weakened, and the toughness is poor, so the application of PC and basalt fiber composite materials The field is greatly limited
The existing published patent CN201510732770.X mentions a basalt fiber reinforced PC / ABS composite material and its preparation method. The strength, toughness and dielectric strength of the material are not ideal, and the dielectric constant is as high as 3.7-3.9

Method used

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  • High-modulus and low-dielectric-constant basalt fiber enhanced PC (polycarbonate) material and preparation method thereof
  • High-modulus and low-dielectric-constant basalt fiber enhanced PC (polycarbonate) material and preparation method thereof
  • High-modulus and low-dielectric-constant basalt fiber enhanced PC (polycarbonate) material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1-4

[0034] Adopt material and method of the present invention to make high modulus low dielectric constant basalt fiber reinforced PC material, preparation method steps are as follows:

[0035] 1) Put the PC resin into a drying oven for drying treatment, the process conditions are: temperature 120°C, time 4-8h;

[0036] 2) Weigh PC resin, basalt fiber, coupling agent, toughening agent, compatibilizer, antioxidant and lubricant according to the formula weight ratio;

[0037] 3) Add PC resin, coupling agent, toughening agent, compatibilizer, antioxidant and lubricant to the high-speed mixer, and mix for 20-30 seconds;

[0038] 4) Add the mixed raw materials into the twin-screw extruder. The basalt fiber is fed into the twin-screw extruder by side feeding, melted and extruded at 250°C-280°C, and pelletized after cooling to obtain high modulus and low modulus. Dielectric constant basalt reinforced PC material.

[0039]The processing temperature of the extruder is set to 230°C for zo...

Embodiment 4

[0051] Example 4 (basalt reinforced PC with high modulus and low dielectric constant) has a flexural strength of 130.3MPa, a flexural modulus of 4323MPa, and a notched Charpy impact strength of 19.3kJ / m 2 , Dielectric constant 2.9. At the same time, the surface finish is good, and the overall performance is obviously better than that of the ordinary glass fiber reinforced PC material in the prior art (comparative example 1).

[0052] Draw the following conclusions from the test data of embodiment and comparative example:

[0053] 1. By adding the modified basalt fiber of the present invention instead of glass fiber, the strength and modulus of the product are greatly improved, and the dielectric constant of the material is reduced;

[0054] 2. By adding styrene-acrylonitrile-maleic anhydride random copolymer and methyl methacrylate-butadiene-styrene copolymer, the mechanical properties of the material are greatly improved;

[0055] 3. By adding γ-aminopropyltriethoxysilane, ...

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Abstract

The invention relates to the technical field of high polymer materials and particularly discloses a high-modulus and low-dielectric-constant basalt fiber enhanced PC (polycarbonate) material and a preparation method thereof. The high-modulus and low-dielectric-constant basalt fiber enhanced PC material comprises 800-900 parts by weight of PC, 50-100 parts by weight of basalt fiber, 5-10 parts by weight of a compatilizer, 40-45 parts by weight of a toughener, 1-2 parts by weight of a coupling agent, 2-4 parts of an antioxidant and 5-10 parts of a lubricant. The mechanical property of the product is kept with the adoption of the toughener and the compatilizer, the binding force of PC and the basalt fiber is increased by use of the coupling agent, the compatible problem of PC and the basalt fiber is solved, a blended system keeps good comprehensive performance, and the low-dielectric-constant index is realized by adjusting the content of the basalt fiber.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high modulus low dielectric constant basalt fiber reinforced PC material and a preparation method thereof. Background technique [0002] With the improvement of the integration of ULSI devices, the delay, crosstalk and power consumption caused by the resistance and capacitance of the metal wiring inside the nanoscale device and the capacitance of the insulating dielectric layer have become the main factors limiting the performance of the device. It is undergoing a major change in materials: replacing the commonly used silicon dioxide as a dielectric layer with a low dielectric constant material. These low dielectric constant materials must have the following properties: in terms of electrical properties, they must have low loss and low leakage current; in terms of mechanical properties, they must have high strength and high toughness; in terms of chemical properties, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/04C08L23/08C08L35/06C08K7/10C08K9/04C08K5/134C08K5/526C08K5/544C08K13/06C08K13/04C08J5/06C08J5/04
CPCC08J5/06C08J2369/00C08J2423/08C08J2435/06C08J2451/04C08K5/1345C08K5/526C08K5/544C08K7/10C08K9/08C08K13/04C08K13/06C08J5/0405
Inventor 卢林飞孙兴志宋向前蒋新伟赵志航
Owner 横店集团得邦工程塑料有限公司
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