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Optical fiber filling paste for polypropylene tube optical cable and preparation method thereof

A technology of optical fiber filling paste and polypropylene, which is applied in the direction of fiber mechanical structure, etc., can solve the problems of poor compatibility and small production quantity, and achieve the effects of good high-temperature dripping, ensuring performance transmission, and strong water resistance

Active Publication Date: 2013-01-30
SHANGHAI HONGHUI OPTICS COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the production quantity of PP sleeve optical cable products is very small. The main reason is that the optical fiber filling paste supplied in the optical cable market is extremely poor in compatibility with PP materials. Melting, poor compatibility even at room temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 90 grams of tackifier to 483 grams of PAO 9 synthetic oil, stir well and evenly, add 55 grams of viscosity index improver, heat and stir for 1 to 3 hours, when the temperature rises to 150°C, keep warm and stir, until the viscosity After the index improver is completely melted in the synthetic oil, add 260 grams of high-viscosity synthetic oil and 85 grams of organic thickener respectively, and continue heating and stirring. After the softening agent is completely melted in the mixed oil, add 7 grams of antioxidant and stir for 0.5-1 hour, then cool down to 30 ° C ~ 60 ° C, add 20 grams of thickener, fully return and stir for 1 ~ 3 hours , after homogeneous grinding and vacuum degassing, the final product is a colorless transparent colloid.

[0038] Among the above raw materials, the synthetic oil is a commercially available product, the tackifier is selected from polyisobutylene products with a molecular weight between 2000 and 3000, the viscosity index improver is...

Embodiment 2

[0041] Add 91.5 grams of tackifier to 480 grams of PAO 9 synthetic oil, stir well and evenly, add 50 grams of viscosity index improver, heat and stir for 1 to 3 hours, when the temperature rises to 150°C, keep warm and stir until the viscosity After the index improver is completely melted in the synthetic oil, add 260 grams of high-viscosity synthetic oil and 90 grams of organic thickener respectively, and continue heating and stirring. After the softening agent is completely melted in the mixed oil, add 6.5 grams of antioxidant and stir for 0.5-1 hour, then cool down to 30°C-60°C, add 22 grams of thickener, fully return and stir for 1-3 hours , after homogeneous grinding and vacuum degassing, the final product is a colorless transparent colloid.

[0042] Among the above raw materials, synthetic oil is a commercially available product, the tackifier is selected from polybutene products with a molecular weight between 2000 and 3000, the viscosity index improver is selected from...

Embodiment 3

[0045] Add 90 grams of tackifier to 500 grams of PAO 12 synthetic oil, stir well and evenly, add 55 grams of viscosity index improver, heat and stir for 1 to 3 hours, when the temperature rises to 150°C, keep warm and stir until the viscosity After the index improver is completely melted in the synthetic oil, add 243 grams of high-viscosity synthetic oil and 85 grams of organic thickener respectively, and continue heating and stirring. After the softening agent is completely melted in the mixed oil, add 7 grams of antioxidant and stir for 0.5-1 hour, then cool down to 30 ° C ~ 60 ° C, add 20 grams of thickener, fully return and stir for 1 ~ 3 hours , after homogeneous grinding and vacuum degassing, the final product is a colorless transparent colloid.

[0046] Among the above raw materials, the synthetic oil is a commercially available product, the tackifier is selected from polyisobutylene products with a molecular weight between 2000 and 3000, the viscosity index improver is...

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Abstract

The invention relates to a novel optical fiber filling paste for a polypropylene tube optical cable. The novel optical fiber filling paste is composed of synthetic oil A, high-viscosity synthetic oil B, anchoring agents, viscosity index improvers, gelling agents, thickening agents and antioxidant. The invention further provides a preparation method of the novel optical fiber filling paste. The novel optical fiber filling paste is applicable to an optical fiber loose tube made of the polypropylene material, and has the main features of fine compatibility with the polypropylene material (under the temperature of 80 DEG C for 672 hours, the weight gain ratio is less than or equals to 15%; and under the same experimental condition, the weight gain ratio of a common optical fiber filling paste is larger than 30%), colloid stability and oxidation stability, heat resistance, weather resistance, no system oil separation and low acid value. And the novel optical fiber filling paste is high in water resistance, is not emulsified, fine in high-temperature dripping, high-and-low temperature resistance, and is favorable for the control of the residual length of an optical fiber in the loose tube. Therefore, the optical fiber and a cable core can always be in a most free and unstressed state respectively in the polypropylene loose tube and the cable, and performance transmission of the optical cable is guaranteed.

Description

technical field [0001] The invention relates to an optical fiber filling paste for polypropylene (PP, hereinafter referred to as PP) sleeve optical cable products and a preparation method thereof, in particular to an inner filling optical fiber filling paste for a loose tube optical cable made of PP material and its preparation method. Preparation. Background technique [0002] The post-shrinkage phenomenon of loose tubes of optical cables is an inevitable problem in the production process of optical fiber tubes. For polybutylene terephthalate (PBT, hereinafter referred to as PBT) and PP materials, the main difference is the post-shrinkage performance after extrusion, which stems from the different crystallization processes of the two materials. For PBT materials, the crystallization rate is relatively fast, and the material begins to crystallize once it is below the melting point of the polymer. This causes crystallization to be nearly complete when the bushing contacts t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 沈江波
Owner SHANGHAI HONGHUI OPTICS COMM TECH
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