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Optical fiber drawing wheel and drawing method thereof

A technology of optical fiber and wire drawing wheel, which is applied in the direction of manufacturing tools and glass manufacturing equipment, etc., can solve the problems of "many white spots, large ellipticity, and insufficient wire diameter accuracy" on the surface of compound optical fibers, etc., to eliminate white spots and improve performance, the effect of reducing quality fluctuations

Active Publication Date: 2021-02-26
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a wire drawing wheel and its drawing method for improving the performance of the composite optical fiber, so as to solve the problems of many "white spots" on the surface of the composite optical fiber produced by the existing processing method, insufficient wire diameter accuracy, and elliptical defects. major technical issues

Method used

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  • Optical fiber drawing wheel and drawing method thereof
  • Optical fiber drawing wheel and drawing method thereof
  • Optical fiber drawing wheel and drawing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a raw material composition of a hub coating: in parts by weight, the raw materials of the hub coating include 50 parts of polytetrahydrofuran, 30 parts of toluene diisocyanate, and propylene glycol as a chain extender. 15 parts, nano-silicon nitride is 3 parts, coupling agent KH-600 is 1 part, cadmium stearate is 0.5 parts, water is 0.3 parts, and triethylenediamine is 0.2 parts.

[0044] Wherein: the degree of polymerization or number average molecular weight of polytetrahydrofuran is 1000-2000.

[0045] The present embodiment further provides the preparation method of the aforementioned hub cladding:

[0046] Step 1, dissolving nano-silicon nitride in acetone, protecting it with nitrogen gas, adding a coupling agent under high-speed stirring, refluxing at 60°C for 3 hours, taking it out, and obtaining modified nano-silicon nitride after drying;

[0047] Step 2, drying polytetrahydrofuran and toluene diisocyanate separately for subsequent use;...

Embodiment 2

[0055] This embodiment provides a method for drawing a composite optical fiber.

[0056] Using the drawing wheel provided in Example 1, the surface of the working surface of the drawing wheel was treated to a smooth surface, and the smoothness of the working surface of the hub cladding part of the drawing wheel was Ra0.1. Install the drawing wheel on the high-precision optical fiber drawing machine, adjust the extrusion pressure of the drawing wheel to 0.35MPa, and draw the composite optical fiber. The drawing speed of the drawing wheel is 1.5-4.5m / min. In this embodiment Choose 3m / min as the experimental speed.

[0057] The fiber diameter accuracy and ellipticity of the drawn fiber are detected by an optical fiber caliper, and the "white spot" on the surface of the fiber is observed by spotlights.

[0058] After testing, the surface of the fiber filaments prepared in this example has no "white spot" defect, the diameter accuracy of the fiber filaments is ±5 μm, and the ellip...

Embodiment 3

[0060] This embodiment provides a method for drawing a composite optical fiber.

[0061] Using the drawing wheel provided in Example 1, the surface of the working surface of the drawing wheel is treated to a smooth surface, and the smoothness of the working surface of the elastic body coating layer of the drawing wheel is Ra0.2. Install the drawing wheel on the high-precision optical fiber drawing machine, adjust the extrusion pressure of the drawing wheel to 0.5MPa, and draw the composite optical fiber. The drawing speed of the drawing wheel is 1.5-4.5m / min. In this embodiment Choose 3m / min as the experimental speed.

[0062] The fiber diameter accuracy and ellipticity of the drawn fiber are detected by an optical fiber caliper, and the "white spot" on the surface of the fiber is observed by spotlights.

[0063] After testing, the surface of the fiber prepared in this example has no "white spot" defect, the diameter accuracy of the fiber is ±4 μm, and the ellipticity is belo...

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Abstract

The present invention relates to a hub covering part of an optical fiber drawing wheel, a drawing wheel and a wire drawing method thereof, wherein the raw material components of the hub covering part and the contents of each component include 30-60 parts of polytetrahydrofuran , 20-50 parts of toluene diisocyanate, 10-20 parts of propylene glycol, 1-5 parts of nano-silicon nitride, 0.5-2 parts of coupling agent, 0.1-1 part of cadmium stearate, 0.1-0.5 parts of water, triethylene di 0.1-1 part of amine, the sum of the mass parts of raw materials is 100. The working surface of the hub covering part provided by the present invention has a high degree of smoothness, and under the cooperative cooperation with the extrusion pressure of the drawing wheel, the surface of the drawn composite optical fiber has no "white spot" defect, and the diameter of the composite optical fiber is The accuracy is ±5μm, and the ellipticity is below 150. The accuracy of the fiber diameter is improved, and the ellipticity is reduced, which can improve the performance of the composite optical fiber and improve the performance of the optical fiber panel. At the same time, the service life of the drawing wheel is improved.

Description

technical field [0001] The invention belongs to the field of optical fiber panels, and relates to a compound optical fiber, in particular to a drawing wheel and a drawing method for improving the performance of the compound optical fiber. Background technique [0002] The preparation process of the optical fiber panel includes: placing the core material glass rod in the leather glass rod to obtain a composite optical fiber rod; drawing the composite optical fiber rod to obtain a composite optical fiber filament; The long cuts are arranged in the optical fiber rod mould, hot-pressed, and the hot-pressed optical fibers are subjected to subsequent treatment to obtain an optical fiber panel. [0003] With the continuous development of technology, the performance requirements for optical fiber panels are getting higher and higher. During the processing of the fiber, the surface of the composite optical fiber often has "white spots" defects, the diameter accuracy and ellipticity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08K9/06C08K3/34C08K5/098C03B37/03
CPCC03B37/032C08G18/3206C08G18/4854C08G18/6674C08G18/7614C08K3/34C08K5/098C08K9/06C08K2201/011
Inventor 王三昭张弦许慧超冯跃冲刘娟侯伟杰
Owner CHINA BUILDING MATERIALS ACAD