Long basalt fiber reinforced thermoplastic resin composite master batch and preparation method and application thereof

A technology of basalt fiber and reinforced thermoplastic, which is applied in the field of polymer materials, can solve the problems of difficult to achieve the addition ratio, low fiber content, long fiber length, etc., and achieve the effect of good heat resistance, low price and strong toughness

Active Publication Date: 2020-09-15
四川拜赛特高新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method achieves the purpose of uniformly adding long basalt fibers into the thermoplastic resin, but this method can only make the basalt fiber and thermoplastic resin mixed uniformly and stably by pressing into a prepreg tape and further preparing the board, and the processed board It cannot be processed into various required shapes according to the actual situation, and the plasticity is poor; and the fiber content in the board prepared by this method is low
[0009]In summary, the existing technology is difficult to achieve the preparation of long basalt fiber reinforced thermoplastic resin masterbatch with high addition ratio, long fiber length and stable homogenization of each component

Method used

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  • Long basalt fiber reinforced thermoplastic resin composite master batch and preparation method and application thereof
  • Long basalt fiber reinforced thermoplastic resin composite master batch and preparation method and application thereof
  • Long basalt fiber reinforced thermoplastic resin composite master batch and preparation method and application thereof

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preparation example Construction

[0031] The present invention also provides a preparation method for the above-mentioned long basalt fiber reinforced thermoplastic resin composite masterbatch, comprising the following steps:

[0032] (1) Weigh each component in proportion, and the weighing amount of other components except basalt fiber is 1.5 to 2.5 times of the formula amount, and add other components except basalt fiber into the mixer and mix at high speed, Obtaining the mixture; (2) adding the mixture into the extruder, pulling the basalt fiber by the traction unit, preheating and fully impregnating the mixture extruded from the extruder in the dipping and coating machine to obtain the impregnating material; (3) The impregnating material is extruded by extrusion rollers to obtain composite materials; (4) The composite materials are subjected to water cooling, shaping, water driving and pelletizing to obtain composite master batches.

[0033] The long basalt fiber reinforced thermoplastic resin composite ma...

Embodiment 1

[0053] This embodiment provides a kind of long basalt fiber reinforced thermoplastic resin composite masterbatch, including the following components in weight percentage: 10 parts of nylon (PA), 85 parts of long basalt fibers of 2400tex, 5 parts of silane coupling agent; The length of the grains was 12 mm.

[0054] The present embodiment also provides the preparation method of above-mentioned composite masterbatch, comprises the following steps:

[0055] (1) Weigh the raw materials in proportion, and the weighing amount of other components except basalt fiber is 2.5 times of the formula quantity, and add other components except basalt fiber into the mixer for high-speed mixing. The rotation speed is 500r / min, the mixing time is 10min, and the mixing temperature is 90°C to obtain the mixture;

[0056] (2) Put the mixture into the twin-screw extruder, the screw speed is 400r / min, the temperature of the extrusion section is 240°C, the basalt fiber is pulled by the traction unit,...

Embodiment 2

[0060] This embodiment provides a kind of long basalt fiber reinforced thermoplastic resin composite master batch, including the following components in weight percentage: 60 parts of nylon (PA), 39 parts of long basalt fiber of 2400tex, 1 part of titanate coupling agent; The length of the composite masterbatch is 25mm.

[0061] The present embodiment also provides the preparation method of above-mentioned composite masterbatch, comprises the following steps:

[0062] (1) Weigh the raw materials in proportion, and the weighing amount of other components except basalt fiber is 1.5 times of the formula amount, and add other components except basalt fiber to the mixer for high-speed mixing. The rotation speed is 1500r / min, the mixing time is 10min, and the mixing temperature is 60°C to obtain the mixture;

[0063] (2) Put the mixture into the twin-screw extruder, the screw speed is 220r / min, the temperature of the extrusion section is 180°C, the basalt fiber is pulled by the tra...

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Abstract

The invention provides a long basalt fiber reinforced thermoplastic resin composite master batch. The long basalt fiber reinforced thermoplastic resin composite master batch comprises the following components in parts by weight: 10-60 parts of thermoplastic resin, 10-85 parts of long basalt fibers and 1-5 parts of a coupling agent, wherein the long basalt fibers in the length direction are distributed along the length direction of the composite master batch and have the same length as the composite master batch; and the length L of the composite master batch is more than or equal to 12mm and less than or equal to 25mm. The composite master batch is high in fiber content and long in fiber length, so that good impact resistance, corrosion resistance, salt spray resistance, vibration resistance and electrical properties can be achieved; the homogenization stability of the fibers and the resin in the composite master batch is good, and the fibers and the resin can be well and uniformly dispersed in the reprocessing process; the invention also provides a preparation method and application of the long basalt fiber reinforced thermoplastic resin composite master batch.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a long basalt fiber reinforced thermoplastic resin composite masterbatch, its preparation method and application. Background technique [0002] LFT, Long Fiber Reinforced Thermoplastics, English is Long Fiber reinforced Thermoplastics, compared with ordinary fiber reinforced thermoplastics, usually, the fiber length in fiber reinforced thermoplastics is less than 1mm, and in LFT, the fiber The length of LFT is generally greater than 2mm; in the automotive composites industry, LFT has an informal but conventional definition, which refers to the product produced by mixing reinforcing fibers and thermoplastic polymers with a length of more than 10mm. [0003] Compared with ordinary fiber-reinforced thermoplastics, the long fibers are arranged and dispersed in parallel to the axial direction in the plastic matrix, with uniform distribution and consistent length....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L23/12C08L23/06C08K7/10C08K5/54C08K5/10C08J3/22
CPCC08J3/226C08J2477/00C08J2423/12C08J2423/06C08K7/10C08K5/54C08K5/10
Inventor 石钱华周琳
Owner 四川拜赛特高新科技有限公司
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