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A modified PBT material, a pressure-resistant loose tube and an optical cable using the loose tube

A loose tube and modified technology, which is applied in the field of materials and optical cables, can solve the problems of restricting the miniaturization of optical cables and the inability of loose tubes to meet the lateral pressure resistance, and achieve fast production speed, high lateral pressure resistance, and fast crystallization speed Effect

Active Publication Date: 2017-09-08
湖北科普达光电材料有限公司
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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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  • A modified PBT material, a pressure-resistant loose tube and an optical cable using the loose tube
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  • A modified PBT material, a pressure-resistant loose tube and an optical cable using the loose tube

Examples

Experimental program
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Effect test

Embodiment 1

[0019] 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.

[0020] 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

[0029] 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

[0031] 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 relates to the technical field of materials and optical cables, in particular to a modified PBT material. The modified PBT material is characterized by being prepared from, by weight, polybutylene terephthalate, glass fibers with the maximum size smaller than 300 meshes, silicon dioxide or silicon carbide with the fineness of 200-300 meshes, calcium carbonate, polycarbonate, antioxidant with the model 1010, 2# white oil or 5# white oil or 7 # white oil, propylene glycol monostearate, silicone, tetramethrin, polypropylene, polyethylene, aluminum hydroxide, triphenyl phosphate, mica powder, maleic anhydride, decabrominated dipheny ethane, zinc oxide, titanium dioxide and polyethylene wax. The invention further discloses a pressure-resistant loose tube with the modified PBT material and an optical cable with the pressure-resistant loose tube. The modified PBT material has the advantages that the crystallization speed is high, and the produced loose tube is high in lateral pressure resistance and production speed and the like.

Description

technical field [0001] 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 [0002] 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 process of miniaturization of the optical cable, the most direct measure is to reduce the size of the loose tube without affecting the mechanical, environmental, and optical properties of the cable. Due to the reduction in the size of the loose tube, the outer protective layer The dosage is...

Claims

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Application Information

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Patent Type & Authority Patents(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 柯斌李得志
Owner 湖北科普达光电材料有限公司
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