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Halogen-free flame retardant conductive elastomer used for electromagnetic shielding of data cable and preparation method of halogen-free flame retardant conductive elastomer

An electromagnetic shielding and data line technology, applied in the fields of halogen-free flame retardant conductive elastomer and its preparation, polymer materials and its preparation, can solve the problem that the polymer conductive electromagnetic shielding layer of the data line cannot be applied, the toughness of the thermoplastic elastomer is lost, and the Elasticity, inability to meet data cable requirements, etc., to achieve the effect of increasing bonding force, improving tensile properties, and improving mechanical properties

Active Publication Date: 2019-05-21
NINGBO QINGHU ELASTOMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resistance value of this material is high, the tensile strength is low, and the material is not flame retardant, so it cannot be used as a polymer conductive electromagnetic shielding layer in data lines.
The Chinese patent application with the publication number CN105838015 A discloses a manufacturing process of a conductive thermoplastic elastomer. The elastomer uses metal conductive fibers as conductive additives, but due to the rigidity of the metal conductive fibers, the final material will lose the original thermoplastic elastomer. Some toughness and elasticity cannot meet the requirements of data lines

Method used

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  • Halogen-free flame retardant conductive elastomer used for electromagnetic shielding of data cable and preparation method of halogen-free flame retardant conductive elastomer
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Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0053] The components and mass percentages of the halogen-free flame-retardant conductive elastomer used for electromagnetic shielding of data lines in Examples 1-10 are shown in Table 1 below.

[0054] Table 1: Components and mass percentages of halogen-free flame-retardant conductive elastomers in Examples 1-10

[0055]

[0056] In Table 1, the content of acrylate in the ethylene butyl acrylate copolymer is 18%; SEBS is a non-oil-extended SEBS; the melt flow rate of MLLDPE is 33g / 10min, and the flow rate test conditions are 230°C temperature and 2.16kg load; The flow rate of the melt viscosity modifier is 13000g / 10min, and the flow rate test conditions are 190°C temperature and 2.16kg load; the model of the halogen-free flame retardant is Japan Otsuka Chemical SPB100.

Embodiment 11

[0058] The preparation method of the halogen-free flame-retardant conductive elastomer used for electromagnetic shielding of data lines in this embodiment includes the following steps:

[0059] (1) Prepare various raw materials according to the mass percentage of the halogen-free flame-retardant conductive elastomer component in Example 1;

[0060] (2) All raw materials are fed according to the pre-set gravity automatic metering program, ethylene acrylate copolymer, MLLDPE, SEBS, melt viscosity modifier high flow ethylene-octene polymer, halogen-free flame retardant SPB100 and processing aid (lubricant, dispersant, antioxidant) join in the high-speed mixer and mix 4min, join in the twin-screw extruder main feeding hopper after mixing, conductive additive (conductive carbon black, graphene ) mixed uniformly and then added to the side feeding hopper of the twin-screw extruder for extrusion and granulation to obtain the halogen-free flame-retardant conductive elastomer.

[0061]...

Embodiment 12

[0064] The preparation method of the halogen-free flame-retardant conductive elastomer used for electromagnetic shielding of data lines in this embodiment includes the following steps:

[0065] (1) Prepare various raw materials according to the mass percentage of the halogen-free flame-retardant conductive elastomer component in Example 1;

[0066] (2) All raw materials are fed according to the pre-set gravity automatic metering program, ethylene acrylate copolymer, MLLDPE, SEBS, melt viscosity modifier high flow ethylene-octene polymer, halogen-free flame retardant SPB100 and processing aid (lubricant, dispersant, antioxidant) join in the high-speed mixer and mix 3min, join in the twin-screw extruder main feeding hopper after mixing evenly, conductive additive (conductive carbon black, graphene ) mixed uniformly and then added to the side feeding hopper of the twin-screw extruder for extrusion and granulation to obtain the halogen-free flame-retardant conductive elastomer.

...

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Abstract

The invention relates to a halogen-free flame retardant conductive elastomer used for electromagnetic shielding of a data cable and a preparation method of the halogen-free flame retardant conductiveelastomer, and belongs to the technical field of high polymer materials. The halogen-free flame retardant conductive elastomer comprises the following ingredients by weight percentage: 5%-20% of ethylene acrylate copolymers, 5%-30% of polyethylene, 10%-40% of SEBS (styrene-hydrogenated butadiene-styrene copolymers), 5%-20% of a melt viscosity regulator, 8%-20% of a halogen-free flame retardant, 10%-40% of a conductive additive and 0.1%-5% of a processing agent, wherein the sum of the weight percentages of the ingredients is 100%. The halogen-free flame retardant conductive elastomer is used for electromagnetic shielding of the data cable and has good conductivity, flame retardant property and mechanical property.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a halogen-free flame-retardant conductive elastomer used for electromagnetic shielding of data lines and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Thermoplastic elastomer (Thermoplastic elastomer, TPE) has the characteristics of both rubber and plastic. It is a new type of polymer material known as the third generation of synthetic rubber. It is widely used in automobiles, cables, shoe materials, medical and other industries. In recent years, with the rapid development of the consumer electronics industry and the continuous strengthening of environmental protection awareness, environmentally friendly halogen-free flame-retardant TPE has basically replaced other materials as the outer coating material of the data line. For a long time, aluminum foil and copper braiding have been used to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/08C08K13/02C08K3/04C08K5/5399
Inventor 刘汉水史伟才
Owner NINGBO QINGHU ELASTOMER SCI & TECH
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