Preparation method of watertight cable filling sealant and application of watertight cable filling sealant in cable products

A watertight cable and sealant technology, which is applied in cable/conductor manufacturing, circuits, adhesives, etc., can solve the problems of viscosity, high and low temperature resistance, and poor effect

Inactive Publication Date: 2019-07-12
扬州市金鑫电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a preparation method of watertight cable filling sealant and its application in cable products, which has the advantages of good hydrolysis resistance, high viscosity and strong high and low

Method used

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: A method for preparing a watertight cable filling sealant, comprising the following steps:

[0025] 1) First, use natural SiO2 high-precision grinding technology to prepare nano-SiO2 powder;

[0026] 2) TDI modified nano-SiO2: add an appropriate amount of nano-SiO2 to the reaction device protected by N2, dilute with 3,5-dimethylthiotoluenediamine and stir, stir at 100 rpm for ten minutes, ultrasonic Disperse for 15 minutes, add an appropriate amount of TDI (2,4 toluene diisocyanate), ultrasonically disperse for ten minutes, heat with mechanical stirring, keep the reaction temperature at about 80°C, keep the reaction temperature, after reacting for 2 hours, then add an appropriate amount of polyether ( Polyoxypropylene diol), after maintaining the temperature and continuing to react for 1 hour, the TDI modified nano-SiO2 powder was prepared;

[0027] 3) Preparation of the first adhesive matrix: Pre-polymerization reaction is used to dry polyether (polyoxyp...

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Abstract

The invention relates to the technical field of chemical industry and discloses a preparation method of a watertight cable filling sealant. The sealant is characterized by comprising the following step: firstly, preparing nano SiO2 powder from natural SiO2 with a high-precision grinding technology, and modifying nano SiO2 with TDI: adding a proper amount of nano SiO2 to a reaction device protectedby N2, and performing dilution with 3,5-dimethyl thio-toluene diamine and performing stirring. According to the preparation method of the watertight cable filling sealant and the application of the watertight cable filling sealant in cable products, an SPUR prepolymer is introduced into Schiff base to prepare an adhesive matrix material, namely, a modified Schiff base polyurethane type liquid crystal polymer; the Schiff base contains an imine group and has high polarity and rigidity, so that intermolecular acting force is enhanced, liquid crystal phase is displayed, and high and low thermal stability and liquid crystal property are improved; the sealant base material has the basic properties of good polyurethane film forming property, aging resistance and high elasticity, and temperatureresistance, water resistance and thermotropic liquid crystal temperature property are improved with the Schiff base process.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of watertight cable filling sealant and its application in cable products. Background technique [0002] Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mine cables and aluminum alloy cables, etc. They are all made of single strand or Composed of multi-strand wires and insulating layers, it is used to connect circuits and electrical appliances, etc. It is usually a rope-like cable twisted by several or groups of wires (at least two in each group), and each group of wires is insulated from each other. It is often twisted around a center, and the entire outer surface is covered with a highly insulating covering layer. The cable has the characteristics of internal electrification and external insulation. [...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/04C08G18/48C08G18/76H01B13/22
CPCC08G18/4825C08G18/7614C08K2201/011C09J11/04C09J175/08H01B13/221C08K9/04C08K3/36
Inventor 杜娟朱有明朱金鑫路永鸣吴子剑陈宇飞吕宏光钱永红徐文娣路宝俊张兆斌杜刚
Owner 扬州市金鑫电缆有限公司
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