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Preparation method of low-smoke halogen-free flame-retardant cable material

A cable material and raw material technology, applied in the field of cable raw material preparation, can solve the problems of increasing particle load, difficulty in rapid drying, lack of strength and anti-deformation performance, etc., to achieve the effect of improving strength and anti-deformation performance

Pending Publication Date: 2021-05-04
太仓俊达塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing low-smoke, halogen-free and flame-retardant cables lack strength and deformation resistance. After the cable is stretched or squeezed by an external heavy object, the cable sheath cracks and the copper core is exposed, causing the cable to be directly connected to the ground. , resulting in a waste of power resources;
[0004] And during the preparation of cable raw materials, the granules extruded by the granulator enter the col

Method used

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  • Preparation method of low-smoke halogen-free flame-retardant cable material
  • Preparation method of low-smoke halogen-free flame-retardant cable material
  • Preparation method of low-smoke halogen-free flame-retardant cable material

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preparation example Construction

[0028] refer to Figure 1-Figure 3 Shown, the preparation method of low-smoke halogen-free flame-retardant cable material, its preparation method comprises the following steps:

[0029] S1: Preparation of cable material raw materials. The cable material raw materials are composed of the following components in parts by weight: 15-25 parts of ethylene-vinyl acetate copolymer; 15-30 parts of ethylene-octene copolymer; 8 parts of glass fiber; 20-25 parts of flame retardant and smoke suppression agent mixed with aluminum and magnesium hydroxide; 0.5-1 part of lubricant; 0.5-1 part of antioxidant; 1-5 parts of anti-scratch and wear-resistant agent; Improve the strength and deformation resistance of the cable;

[0030] S2: mixing the raw materials of the cable material, putting the raw materials in S1 into the mixer for stirring and mixing, and putting them into the twin-screw extruder after mixing;

[0031] S3: The material extruded by the screw extruder in S2 is cooled and harde...

Embodiment approach

[0032] As an embodiment of the present invention, in the S2, the raw materials of the cable material are mixed and stirred, and the counterclockwise and clockwise directions of the mixer are alternately stirred; the counterclockwise and clockwise directions of the mixer are alternately stirred, so that the glass fibers swim irregularly , so that the glass fibers are intertwined with each other, and the glass fibers play a supporting role, thereby improving the strength and deformation resistance of the cable.

[0033]As an embodiment of the present invention, the air dryer 1 used in the S3 includes a workbench 2; the workbench 2 is provided with a ventilation housing 3, a transfer unit and an air-drying unit; the ventilation housing 3 is affixed to The workbench 2, the transmission unit is arranged between the ventilation housing 3 and the workbench 2; the transmission unit includes a motor 4, a belt 5, a pulley 6, a driving shaft 7, a driven shaft 8 and a conveyor belt 9; the ...

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Abstract

The invention belongs to the technical field of cable raw material preparation, and particularly relates to a preparation method of a low-smoke halogen-free flame-retardant cable material. The preparation method comprises the following steps that S1, cable material raw materials are prepared and comprise, by weight, 15-25 parts of an ethylene-vinyl acetate copolymer, 15-30 parts of an ethylene-octylene copolymer, 8 parts of glass fibers, 20-25 parts of a flame-retardant and smoke-suppressing agent formed by mixing aluminum hydroxide and magnesium hydroxide, 0.5-1 part of a lubricant, 0.5-1 part of an antioxidant, and 1-5 parts of a scratch-resistant and wear-resistant agent; S2, the cable raw materials are mixed, the raw materials in the S1 are put into a mixer for stirring and mixing, and then the mixed raw materials are put into a double-screw extruder; and S3, the material extruded and discharged of the double-screw extruder in the S2 is cooled and hardened through a water cooling tank, then granulating by a granulator is conducted, afterwards, granules are cooled again through an air dryer, moisture on the surfaces of the granules are air-dried, and the granules are conveyed to a packaging workshop to be packaged into finished products.

Description

technical field [0001] The invention belongs to the technical field of cable raw material preparation, in particular to a method for preparing a low-smoke, halogen-free, flame-retardant cable material. Background technique [0002] With the development of modern science and technology and the improvement of people's living standards, higher requirements have been put forward for the safety, environmental protection and service life of wire and cable products. In the late 1990s, the application technology of domestic polymer materials and synthetic resins and The rapid development of its blending modification technology has actively promoted the cable industry to enter an era of application of new materials. Low-smoke, halogen-free, flame-retardant material is a new type that has emerged in recent years. Its performance meets the requirements for thermoplastic materials in the IEC92-359 standard. The low-smoke, halogen-free, and flame-retardant cables produced have been widel...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29B9/16B29B13/06C08L23/08C08K13/04C08K7/14C08K3/22
CPCB29B9/06B29B9/16B29B13/065C08K2003/2224C08K2003/2227C08L23/0815C08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/02C08K13/04C08K7/14C08K3/22
Inventor 龚俊龚清顾永锋张国强张恩林
Owner 太仓俊达塑化有限公司
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