Polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables and preparation method thereof

A technology of polyperfluoroethylene propylene and resin mixture, which is applied in the direction of plastic/resin/wax insulators, organic insulators, electrical components, etc., and can solve problems such as excessive breakdown, viscose, and unevenness, so as to slow down melt fracture and solve Adhesive, excellent lubricity effect

Active Publication Date: 2022-03-29
SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables, which overcomes the problem that existing FEP resins are not suitable for high-speed extrusion of thin-walled cables, and solves the problem of high-speed extrusion of thin-walled cables. There are many problems of viscose, bumps, bumps, and breakdowns; the invention also provides its preparation method

Method used

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  • Polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables and preparation method thereof
  • Polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables and preparation method thereof
  • Polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix the FEP resin emulsion with powder melt index of 25g / 10min and 35g / 10min according to the mass ratio of 3:2, condense and dry to obtain FEP resin powder, and its melt flow rate under the condition of 372°C and 5kg is 30g / 10min;

[0034] (2) Spray 0.2% lubricant silicone powder and 0.2% filler kaolin onto 99.6% FEP resin powder, and stir evenly to obtain a mixture;

[0035] (3) Melt, process and granulate the mixture on a devolatilization granulator. The temperatures in the feeding section, melting section, mixing section, devolatilization section, and metering section are respectively: 320°C, 370°C, 380°C, 380°C, At 385°C, a polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables was obtained, and its critical shear rate was tested at a temperature of 372°C;

[0036] (4) Add 3% of the total mass of white masterbatch to the prepared polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables f...

Embodiment 2

[0038] (1) Mix the FEP resin emulsion with powder melt index of 20g / 10min and 35g / 10min according to the mass ratio of 2:3, condense and dry to obtain FEP resin powder, and its melt flow rate under the condition of 372°C and 5kg is 25g / 10min;

[0039] (2) Spray 1% lubricant silicone powder and 1% filler kaolin onto 98% FEP resin powder, and stir evenly to obtain a mixture;

[0040] (3) The mixture is melt-processed and granulated on a devolatilization granulator. The temperatures of the feeding section, melting section, mixing section, devolatilization section, and metering section are respectively: 320°C, 380°C, 390°C, 390°C, At 395°C, a polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables was obtained, and its critical shear rate was tested at a temperature of 372°C;

[0041] (4) Add 3% of the total mass of white masterbatch to the prepared polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables fo...

Embodiment 3

[0043] (1) Mix the FEP resin emulsion with powder melt index of 30g / 10min and 40g / 10min according to the mass ratio of 4:1, condense and dry to obtain FEP resin powder, and its melt flow rate under the condition of 372°C and 5kg is 33g / 10min;

[0044](2) Spray 0.5% lubricant silicone powder and 0.5% filler kaolin onto 99% FEP resin powder, and stir evenly to obtain a mixture;

[0045] (3) The mixture is melt-processed and granulated on a devolatilization granulator. The temperatures of the feeding section, melting section, mixing section, devolatilization section, and metering section are respectively: 310°C, 365°C, 375°C, 375°C, At 380°C, a polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables was obtained, and its critical shear rate was tested at a temperature of 372°C;

[0046] (4) Add 3% of the total mass of white masterbatch to the prepared polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables...

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Abstract

The invention relates to the technical field of polyperfluoroethylene propylene resin, in particular to a polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables and a preparation method thereof. The polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables: contains the following components in weight percent: FEP resin powder 98-99.98%, lubricant 0.01-1%, filler 0.01-1%; FEP resin The powder is obtained by mixing two FEP resin emulsions with different melt indices, and coagulating and drying. The polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables of the present invention overcomes the problem that existing FEP resins are not suitable for high-speed extrusion of thin-walled cables, and solves the problem of viscose, glue, etc. in high-speed extrusion of thin-walled cables. There are many problems of pimples, bumps and breakdowns; the invention also provides a preparation method thereof.

Description

technical field [0001] The invention relates to the technical field of polyperfluoroethylene propylene resin, in particular to a polyperfluoroethylene propylene resin mixture for high-speed extrusion of thin-walled cables and a preparation method thereof. Background technique [0002] With the rapid development of modern information technology, people have higher and higher requirements for the performance of communication cables. Polyfluoroethylene propylene resin (FEP) has outstanding insulation properties, dielectric properties and flame retardant properties, making it used in wire and cable insulation The field of sheath materials has unique advantages. In recent years, in order to improve production efficiency and reduce costs, it is required to increase the speed of cable extrusion, and high-speed extrusion of cables requires FEP resin to have excellent processing performance and a higher critical shear rate to ensure that the surface of the cone during high-speed proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L83/04C08K3/34C08J3/20H01B3/44
CPCC08L27/18C08J3/203H01B3/445C08L2205/03C08L2205/025C08L2203/202C08J2327/18C08J2427/18C08J2483/04C08L83/04C08K3/346
Inventor 韩瑞芹王汉利杜延华刘治梅朱倩
Owner SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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