Method for producing inwall permanent lubricating layer base materials for optical fiber cable pipe

A technology of permanent lubricating and threading pipe, applied in the field of masterbatch of inner wall lubricating layer, can solve the problems of unstable quality, uneven distribution of lubricating layer, large quality difference, etc., to achieve good product quality, low cost and good formability Effect

Inactive Publication Date: 2005-11-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to market information feedback, the main problems of this functional masterbatch are: unstable quality, large quality difference between batches, and uneven distribution of lubricating layer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Based on the production of 200kg of lubricating layer masterbatch.

[0018] The carrier resin is mixed with silicon assistant and auxiliary assistant, wherein the carrier resin is 200kg, and a certain amount of silicon assistant, external lubricant, internal lubricant, antistatic agent and antioxidant are added. The mixture was thoroughly mixed on a high speed mixer and melt granulated on an SLF-35B twin screw extruder (length to diameter ratio 30:1). Adjust the processing temperature and screw speed to stabilize the product quality and keep the melt pressure and output in the best state. The obtained masterbatch was extruded and tested continuously for 48 hours by the special extruder of Hangzhou Polytech optical cable threading tube. The results are shown in Table 1.

[0019] In the following examples, the abbreviated codes of various auxiliary agents are as follows:

[0020] Silicone additive: A1 benzyl silicone oil

[0021] A2 epoxy modified silic...

Embodiment 2

[0043] Based on the production of 300kg of lubricating layer masterbatch.

[0044] The carrier resin is mixed with silicon assistant and auxiliary assistant, wherein the carrier resin is 300kg, and a certain amount of silicon assistant, external lubricant, internal lubricant, antistatic agent and antioxidant are added. The mixture was thoroughly mixed on a high-speed mixer, and melted and granulated on an imported twin-screw extruder ZSE-67GL-34D (length-diameter ratio 34:1). Adjust the processing temperature and screw speed to stabilize the product quality and keep the melt pressure and output in the best state. The obtained masterbatch was extruded and tested by the special production line of Italian Baoshannuo Company for more than 48 hours. The results are shown in Table 2.

[0045] The results show that the finished masterbatch particles are bright and uniform. Its various indicators can be seen from Table 2, the measured melt index MI is 0.5-1.8g / 10min, and the density...

Embodiment 3

[0047] Based on the production of 500kg of lubricating layer masterbatch.

[0048] The carrier resin is mixed with silicon assistant and auxiliary assistant, wherein the carrier resin is 500kg, and a certain amount of silicon assistant, external lubricant, internal lubricant, antistatic agent and antioxidant are added. The mixture was thoroughly mixed on a high-speed mixer, and melted and granulated on an imported twin-screw extruder ZSE-67GL-34D (length-diameter ratio 34:1). Adjust the processing temperature and screw speed to stabilize the product quality and keep the melt pressure and output in the best state. The obtained masterbatch was extruded and tested by the SJ90 type pipe extruder of Dalian Plastic Machinery Research Institute for more than 48 hours continuously. The results are shown in Table 3.

[0049] The results show that the finished masterbatch particles are bright and uniform. Its various indicators can be seen from Table 3, the measured melt index MI is 0...

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Abstract

The invention relates to a process for production of inner wall everlasting lubricating layer masterbatch for optical cable sewing pipe when producing it, the characteristic of which lies in: selecting silicon adjuvant, and adjuvant good for silicon adjuvant dispersing and antistatic agent, anti-oxidant; blending them with carrier resin, then blending homogeneously on a high-speed batch mixer; squeezing and granulating on the twin-screw extruder to get inner wall everlasting lubricating layer masterbatch for optical cable sewing pipe, which takes advantages of the synergic effect of all the adjuvant, in order that even in the low filling range of the adjuvant, the effect is quite good; such masterbatch and base resin lock-in extrusion moldability is sound, and stable processing parameter, good product quality. The coefficient of friction of rest of inner wall everlasting lubricating layer for optical cable sewing pipe produced by such masterbatch is less than 0.165.

Description

[0001] Involved [0002] The invention relates to a production method of a master batch used for an inner wall lubricating layer when producing an optical cable threading pipe. Background technique [0003] As we all know, optical cable threading pipes have been widely used in highways and urban cable laying. This kind of pipe is made of high-density polyethylene as the main raw material and adopts advanced technology and technology to make the inner wall of the composite pipe lined with silicon material. The inner wall of the pipe is a solid permanent lubricating layer, which is self-lubricating and can minimize light , The frictional resistance between the cable and the casing when the cable is repeatedly extracted in the pipeline, so that the communication trunk line is easy to realize. With the development of the communication industry, this kind of optical cable conduit has developed rapidly. The invention developed is a functional masterbatch with self-lubricating effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04
Inventor 逯翠霞李春兰李冬霞孙伟严金荣吴文固安彦杰孙慧明姜进宪吕彩凤崔立娟
Owner PETROCHINA CO LTD
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