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Modified PBT material, pressure-resistant loose tube, and optical cable using loose tube

A loose tube and modified technology, which is applied in the field of materials and optical cables, can solve the problems that the loose tube can not meet the lateral pressure resistance, restrict the miniaturization of optical cables, etc., and achieve fast production speed, high lateral pressure resistance, and fast crystallization speed. Effect

Inactive Publication Date: 2017-11-10
CHANGSHU GREATER MECHANICAL PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently in the optical cable industry, the loose tube is mainly made of PBT (polybutylene terephthalate) material, which cannot meet the requirements of the loose tube when the size of the loose tube is made thinner. Requirements against lateral pressure
Therefore, the process of miniaturization of optical cables is restricted

Method used

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  • Modified PBT material, pressure-resistant loose tube, and optical cable using loose tube
  • Modified PBT material, pressure-resistant loose tube, and optical cable using loose tube
  • Modified PBT material, pressure-resistant loose tube, and optical cable using loose tube

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A modified PBT material, characterized in that, in parts by weight, it is made of the following raw materials: polybutylene terephthalate: 70-86 parts, glass fiber with a maximum size of less than 300 mesh: 5-10 Parts, fineness of 200-300 mesh silicon dioxide or silicon carbide: 8-16 parts, calcium carbonate: 2-4 parts, polycarbonate: 3-5 parts, antioxidant type 1010: 1-2 parts, 2# or 5# or 7# white oil: 2~4 parts, propylene glycol monostearate: 3~6 parts, silicone: 1~3 parts, tetramethrin: 0.3~0.6 parts, polypropylene: 5~ 9 parts, polyethylene: 3~7 parts, aluminum hydroxide: 2~4 parts, triphenyl phosphate: 3~5 parts, mica powder: 1~3 parts, maleic anhydride: 2~3 parts, ten Bromodiphenylethane: 3-5 parts, zinc oxide: 1-3 parts, titanium dioxide: 2-4 parts, polyethylene wax 3-5 parts.

[0021] The above-mentioned modified PBT material, the optimal formula is: by weight, it is made of the following raw materials: polybutylene terephthalate: 78 parts, the largest size is ...

Embodiment 2

[0030] please see figure 1 , a lateral pressure-resistant loose tube for an optical cable, which includes an optical fiber 1, a loose tube 2 that covers the optical fiber, and the loose tube is made of the modified PBT material of Example 1.

Embodiment 3

[0032] please see figure 2 , a lateral pressure-resistant loose tube for an optical cable, which includes an optical fiber ribbon 1, a loose tube 2 that coats the optical fiber ribbon, and includes a plurality of optical fibers in the optical fiber ribbon, and the loose tube is modified from Example 1 Made of non-toxic PBT material.

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Abstract

The invention especially relates to a modified PBT material, belonging to the technical field of materials and optical cables. The modified PBT material is characterized by being prepared from the following raw materials by weight: polybutylene terephthalate, glass fibers with a maximum size of less than 300 meshes, silica or silicon carbide with a fineness of 200-300 meshes, calcium carbonate, polycarbonate, an antioxidant 1010, white oil No. 2 or No. 5 or No. 7, propylene glycol monostearate, silicone, tetramethrin, polypropylene, polyethylene, aluminum hydroxide, triphenyl phosphate, mica powder, maleic anhydride, decabromodiphenylethane, zinc oxide, titanium dioxide and polyethylene wax. The invention also discloses a pressure-resistant loose tube using the material and an optical cable using the loose tube. The invention has the beneficial effects that the modified PBT material provided by the invention has high crystallization speed; and the prepared loose tube has high resistance to lateral pressure and is fast in production speed.

Description

[0001] This application is a divisional case of an invention patent application titled: a modified PBT material, a pressure-resistant loose tube and an optical cable using the loose tube, the application date is: January 27, 2016, and the application number is: 201610053121.1 Application. technical field [0002] The invention relates to the technical field of materials and optical cables, in particular to a modified PBT material, a pressure-resistant loose tube and an optical cable using the loose tube. Background technique [0003] With the demand for low-carbon environmental protection, energy saving, and cost reduction, the miniaturization and high-density of optical cables have become a development trend. In optical cables, optical fibers are usually placed in loose tubes, and several protective layers are arranged outside the loose tubes. Through this measure, the optical fiber in the loose tube is heavily protected so that it can perform as it should. However, in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L69/00C08L91/06C08L83/04C08L23/12C08L23/06C08K13/04C08K7/14C08K3/36C08K3/34C08K5/523C08K5/134G02B6/44
CPCC08L67/02C08L2203/18C08L2205/02C08L2205/035G02B6/443C08L69/00C08L91/06C08L83/04C08L23/12C08L23/06C08K13/04C08K7/14C08K3/36C08K3/34C08K5/523C08K5/1345
Inventor 沈群华
Owner CHANGSHU GREATER MECHANICAL PROD DESIGN CO LTD
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