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Manufacturing method of colored polytetrafluoroethylene (PTFE) thread seal tape for winding and sintering

A technology of polytetrafluoroethylene and its production method, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problem of low density, insufficient electrical insulation and voltage resistance, and cannot be used for electrical insulation protection layers of wires and cables, etc. question

Active Publication Date: 2009-12-09
四会市生料带厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the raw material belts made of PTFE dispersion resin are only used for thread sealing on general liquid and gas pipelines by using their fibers and corrosion resistance, such as water pipe sealing in the plumbing industry
Moreover, this kind of raw material tape has been stretched in a large proportion during production, and has disadvantages such as low density, insufficient electrical insulation and voltage resistance, and cannot be used as an electrical insulation protective layer in wires and cables.

Method used

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  • Manufacturing method of colored polytetrafluoroethylene (PTFE) thread seal tape for winding and sintering
  • Manufacturing method of colored polytetrafluoroethylene (PTFE) thread seal tape for winding and sintering

Examples

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Effect test

Embodiment 1

[0039] The manufacturing method of polytetrafluoroethylene colored raw material tape for winding and sintering, its manufacturing steps are as follows:

[0040] (1) Put the polytetrafluoroethylene dispersed resin in a freezer to refrigerate at a temperature of 15° C. for 24 hours, and then sieve through an 8-mesh sieving machine.

[0041] (2) Mix the sieved polytetrafluoroethylene dispersion resin with the propellant, and let it stand for 2 hours; then stir for 14 minutes, and the mixing temperature is not higher than 19°C; let it stand for 24 hours; the polytetrafluoroethylene dispersion The parts by weight of the resin and the booster consist of: polytetrafluoroethylene dispersion resin is 70-85%, and the booster is 15-25%; the booster can be one of kerosene solvent oil, sherwood oil or paraffin oil. species or a mixture of species.

[0042] (3) Carry out aging treatment; the aging treatment is carried out in the aging box, the aging temperature is 50-60° C., and the aging ...

Embodiment 2

[0049] The manufacturing method of polytetrafluoroethylene colored raw material tape for winding and sintering, its manufacturing steps are as follows:

[0050] (1) Put the polytetrafluoroethylene dispersed resin in a freezer to refrigerate at a temperature of 15° C. for 24 hours, and then sieve through an 8-mesh sieving machine.

[0051] (2) Mix the sieved polytetrafluoroethylene dispersion resin with the propellant, and let it stand for 3 hours; then stir for 15 minutes, and the mixing temperature is not higher than 19°C; let it stand for 24 hours; the polytetrafluoroethylene dispersion The parts by weight of the resin and the booster are as follows: 80% polytetrafluoroethylene dispersion resin and 20% booster; the booster can be one or more of kerosene solvent oil, petroleum ether or paraffin oil.

[0052] (3) Carry out aging treatment; the aging treatment is carried out in the aging box, the aging temperature is 50-60° C., and the aging time is 24 hours.

[0053] (4) Pref...

Embodiment 3

[0059] The manufacturing method of polytetrafluoroethylene colored raw material tape for winding and sintering, its manufacturing steps are as follows:

[0060] (1), the polytetrafluoroethylene dispersion resin is refrigerated, and then sieved. The polytetrafluoroethylene dispersed resin can be placed in a freezer for refrigeration at a temperature of 10-19° C. for 20-30 hours, and the sieving can be carried out by sieving through an 8-10 mesh sieving machine.

[0061] (2) Add pigments accounting for 5% by weight of the polytetrafluoroethylene dispersion resin to the sieved polytetrafluoroethylene dispersion resin, and then stir for 10 to 20 minutes.

[0062] (3), the sieved polytetrafluoroethylene dispersion resin and propellant are mixed, stand still; The weight part of polytetrafluoroethylene dispersion resin and propellant is made up of: polytetrafluoroethylene dispersion resin is 60~90 %, the booster is 10-30%. The booster can be one or a mixture of kerosene, solvent na...

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Abstract

The invention provides a manufacturing method of a colored polytetrafluoroethylene (PTFE) thread seal tape for winding and sintering, comprising the following steps: sifting polytetrafluoroethylene (PTFE) dispersion resins, adding a propellant for mixing, curing the mixed materials after standing for 24 hours, prepressing to squeeze out a molded blank, calendering the blank by two rolls, removing the propellant, after shaping, slitting and rolling, finally obtaining the colored PTFE thread seal tape for winding and sintering. The colored PTFE thread seal tape for winding and sintering prepared in the invention is a major breakthrough of the manufacturing technology of ordinary thread seal tapes; the compactness, electric insulation and voltage resistance are enhanced dramatically; manufacturing electric wires by the winding and sintering method is also a major breakthrough in the electric wire manufacturing techniques; easy operation and lower cost ensure the possibility of popularizing the high-end product fluoroplastics electric wires for civil use.

Description

technical field [0001] The invention relates to an insulating material, in particular to a manufacturing method of polytetrafluoroethylene colored raw material tape for winding and sintering. Background technique [0002] Due to the high bond energy of fluorine-carbon bonds and the shielding effect of fluorine atoms, PTFE has superior electrical insulation, voltage resistance, excellent chemical corrosion resistance, dielectric properties and weather resistance, and has non-combustible, non-flammable It produces dense smoke, low friction coefficient and has a wide range of operating temperature. Therefore, it is widely used in the fields of anti-corrosion, sealing, electrical insulation, medical and health care, and home appliances. PTFE has become an indispensable polymer material in modern cutting-edge scientific industries such as electronics, petrochemicals, and machinery manufacturing, as well as national defense industries. [0003] However, most of the raw material ...

Claims

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Application Information

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IPC IPC(8): C08J5/00C08L27/18H01B3/44
Inventor 曾燕飞曾亮李水文
Owner 四会市生料带厂有限公司
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