A large tow continuous silicon carbide fiber preparation device and method

A technology of silicon carbide fiber and preparation device, which is applied in fiber processing, fiber chemical characteristics, melt spinning and other directions, can solve the problems of low yarn efficiency, broken yarn, etc., and achieves low yarn breaking rate, reduced fiber yarn, convenient effect of operation
CN111575818BActive Publication Date: 2022-01-11宁波众兴新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
宁波众兴新材料科技有限公司
Publication Date
2022-01-11

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Abstract

The invention discloses a large tow continuous silicon carbide fiber preparation device, which includes a spinneret, a spinning box and a melting kettle, and is characterized in that the spinning box includes a box, and a spinning Components, booster pumps, metering pumps, heat transfer oil pipes, and spinneret inner ring coolers; the box is provided with cooling air inlets and cooling air outlets, and the cooling air inlets and cooling air outlets are connected to the inside of the spinning assembly Phase conduction; the inner ring cooler is provided with a temperature measuring thermal resistor and a plurality of outlet pipes, and the inner ring cooler is also provided with a cooling air inlet, and the cooling air inlet and the cooling air inlet are cooled The cavity of the device is connected; the invention also discloses a method for producing large tow continuous silicon carbide fibers by the device, and the product is finally obtained through steps such as preparation before spinning, heating of the melting kettle, heating of the spinning box, and spinning. The large tow continuous silicon carbide prepared by the invention has high strength, less broken wires, no bifurcation, and high production efficiency.
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Description

technical field

[0001] The invention relates to the technical field of silicon carbide fiber preparation, in particular to a large tow polycarbosilane melt spinning device and a method for preparing large tow continuous silicon carbide fibers. Background technique

[0002] Continuous silicon carbide fiber and its composite materials have excellent properties such as high temperature resistance, low density, high strength, high modulus, wear resistance, corrosion resistance, oxidation resistance, high temperature creep resistance, etc., and are widely used in aviation, aerospace, nuclear energy and other fields Strategic new materials used to manufacture high-tech equipment.

[0003] The industrial production of continuous silicon carbide fibers generally adopts the precursor conversion method. Divided into 4 processes:

[0004] 1. The PCS precursor is melt-spun to obtain continuous PCS fibers (the "fibers" mentioned below, unless otherwise specified, are continuous fibers)...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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