Modified polypropylene for manufacturing optical fiber buffer tube, manufacturing process and production system thereof

A technology of polypropylene and optical fiber loose, which is applied in the field of modified polypropylene and its production process and production system. productivity effect

Active Publication Date: 2014-07-16
JIANGSU NANFANG COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because of the high regularity of its molecular structure, its impact strength is poor

Method used

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  • Modified polypropylene for manufacturing optical fiber buffer tube, manufacturing process and production system thereof
  • Modified polypropylene for manufacturing optical fiber buffer tube, manufacturing process and production system thereof
  • Modified polypropylene for manufacturing optical fiber buffer tube, manufacturing process and production system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) 0.01 parts of a masterbatch made of polypropylene-polyethylene copolymer base material for fluorine-containing rheological agent, wherein the weight ratio of polypropylene to polyethylene in the polypropylene-polyethylene copolymer base material is 87:13;

[0050] (2) Surface-treat the inorganic nucleating agent with a coupling agent: use a dry pulverizer to obtain 0.68 parts of kaolin particles with an average particle size of 3 μm, and then mix with Add 0.01 part of glycidoxytrimethylsilane coupling agent into the high-speed stirring kneader, mix for 30 minutes at the speed of 3000 r / min and the temperature of 110°C, and then heat-treat at 120°C 2 hours;

[0051] (3) 96 parts of polypropylene-polyethylene copolymer base material, 0.01 part of rheological agent masterbatch prepared by step (1), 1.3 parts of PE organic nucleating agent, and inorganic nucleation of kaolin particles after surface treatment Add 0.68 parts of 1010 phenolic antioxidant, 0.5 part of 101...

Embodiment 2

[0055] (1) 0.02 parts of a masterbatch made of polypropylene-polyethylene copolymer base material for fluorine-containing rheological agent, wherein the weight ratio of polypropylene to polyethylene in the polypropylene-polyethylene copolymer base material is 82:18;

[0056] (2) Surface-treat the inorganic nucleating agent with a coupling agent: use a dry pulverizer to obtain 0.4 parts of kaolin particles with an average particle size of 2 μm, and then mix with Add 0.03 parts of glycidoxytrimethylsilane coupling agent into the high-speed stirring kneader, mix for 30 minutes at a speed of 3000 r / min and a temperature of 100°C, and then heat-treat at 120°C 2 hours;

[0057] (3) 96.7 parts of polypropylene-polyethylene copolymer base material, 0.02 parts of masterbatch obtained from step (1), 1.5 parts of PE organic nucleating agent, and 0.4 parts of inorganic nucleating agent of kaolin particles after surface treatment , 0.4 part of 1010 phenolic antioxidant, 0.4 part of 168 p...

Embodiment 3

[0061] (1) 0.1 parts of a masterbatch made of polypropylene-polyethylene copolymer base material for fluorine-containing rheological agent, wherein the weight ratio of polypropylene to polyethylene in the polypropylene-polyethylene copolymer base material is 89:11;

[0062] (2) Surface-treat the inorganic nucleating agent with a coupling agent: use a dry pulverizer to obtain 0.3 parts of kaolin particles with an average particle size of 5 μm, and then mix with Add 0.02 parts of glycidoxytrimethylsilane coupling agent together into the high-speed stirring kneader, mix for 30 minutes at a speed of 3000 r / min and a temperature of 120°C, and then heat-treat at 120°C 2 hours;

[0063] (3) 97.3 parts of polypropylene-polyethylene copolymer base material, 0.1 part of masterbatch obtained from step (1), 1.0 part of PE organic nucleating agent, and 0.3 parts of inorganic nucleating agent of kaolin particles after surface treatment , 0.24 parts of 1010 phenolic antioxidants, 0.24 part...

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Abstract

The present invention discloses modified polypropylene for manufacturing an optical fiber buffer tube, a manufacturing process and a production system thereof. The modified polypropylene comprises the following components, by weight, 96.0-97.5% of a polypropylene-polyethylene copolymer base material, 0.5-2.5% of a nucleating agent, 0.001-0.05% of a coupling agent, 0.4-2.0% of an antioxidant, and 0.5-3.0% of an additive. The manufacturing process comprises: making a rheological agent into master batch by using a polypropylene-polyethylene copolymer base material; carrying out a surface treatment on an inorganic nucleating agent by using a coupling agent; adding the polypropylene-polyethylene copolymer base material, the prepared master batch, an organic nucleating agent, the surface-treated inorganic nucleating agent, an antioxidant and a lubricant to a stirring mixing apparatus to mix to prepare a mixture; adding the mixture to a plastic extruding apparatus to carry out mastication and extrusion, and then carrying out cooling and pelletizing; and carrying out weighing and packaging. The modified polypropylene of the present invention has good impact resistance, and has mechanical and processing properties of the optical fiber buffer tube.

Description

technical field [0001] The invention relates to the technical field of optical fiber and cable, in particular to a modified polypropylene used for making an optical fiber loose tube, a manufacturing process and a production system thereof. Background technique [0002] In the communication optical cable, whether it is a layered optical cable or a central bundle tube optical cable, the basic unit is an optical fiber buffer tube, and the loose tube is filled with ointment, so that the optical fiber in the loose tube is mechanically protected. Corroded by moisture. PBT (polybutylene terephthalate) is usually used as the material for the production of optical fiber loose tubes in communication optical cables. PBT materials are widely used because of their high Young's modulus and low expansion coefficient. However, PBT has disadvantages such as high price, poor hydrolysis resistance, poor bending resistance, and shrinkage after extrusion in the extrusion molding process, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K13/06C08K9/06C08K3/34C08K5/134C08K5/524B29B9/06B29B7/00G02B6/44
Inventor 陈炳炎石明
Owner JIANGSU NANFANG COMM TECH
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