Flame-retardant cable sheath and preparation method thereof

A technology for flame-retardant cables and sheaths, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve problems such as limited flame-retardant effects, achieve enhanced interaction force, improve heat-resistant flame-retardant performance, and connect tight effect

Inactive Publication Date: 2020-09-22
温州网牌电线电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above technical scheme, the insulating PVC sheath is directly used, and its flame retardant effect is relatively limited, which needs to be improved

Method used

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  • Flame-retardant cable sheath and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A flame-retardant cable sheath, the raw material components are shown in Table 1 in parts by weight.

[0051] Wherein, zinc sulfate is loaded on the titanium dioxide nanofiber, and the loading method comprises the following steps:

[0052] S1, put the saturated solution of zinc sulfate and titanium dioxide nanofibers into the reaction kettle, and react at 250°C for 9 hours;

[0053] S2, take out and dry.

[0054] Such as figure 1 Shown, the preparation method of flame retardant cable sheath comprises the following steps:

[0055] S1, loading zinc sulfate on titanium dioxide nanofibers for subsequent use;

[0056] S2, heating and melting polyvinyl chloride;

[0057] S3, uniformly mixing titanium dioxide nanofibers loaded with zinc sulfate, antimony trioxide, trichloroethyl phosphate, zinc borate, aluminum hypophosphite, ammonium polyphosphate, and pentaerythritol;

[0058] S4, putting the uniformly mixed additive into the molten polyvinyl chloride and stirring evenl...

Embodiment 2

[0062] A flame-retardant cable sheath, the raw material components are shown in Table 1 in parts by weight.

[0063] The preparation method of flame retardant cable sheath comprises the following steps:

[0064] S1, heating and melting polyvinyl chloride;

[0065] S2, uniformly mixing titanium dioxide nanofibers, antimony trioxide, trichloroethyl phosphate, zinc borate, aluminum hypophosphite, ammonium polyphosphate, and pentaerythritol;

[0066] S3, putting the uniformly mixed additive into the molten polyvinyl chloride and stirring evenly;

[0067] S4, ultrasonic treatment for 1 hour, extrusion molding.

Embodiment 3

[0069] A flame-retardant cable sheath, the raw material components are shown in Table 1 in parts by weight.

[0070] Wherein, zinc sulfate is loaded on the titanium dioxide nanofiber, and the loading method comprises the following steps:

[0071] S1, put the saturated solution of zinc sulfate and titanium dioxide nanofibers into the reaction kettle, and react at 250°C for 9 hours;

[0072] S2, cooled to room temperature, washed 5 times with distilled water;

[0073] S3, take out and dry.

[0074] The preparation method of flame retardant cable sheath comprises the following steps:

[0075] S1, loading zinc sulfate on titanium dioxide nanofibers for subsequent use;

[0076] S2, heating and melting polyvinyl chloride;

[0077] S3, uniformly mixing titanium dioxide nanofibers loaded with zinc sulfate, antimony trioxide, trichloroethyl phosphate, zinc borate, aluminum hypophosphite, ammonium polyphosphate, and pentaerythritol;

[0078] S4, putting the uniformly mixed additive...

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PUM

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Abstract

The invention relates to the field of wires and cables, and particularly discloses a flame-retardant cable sheath and a preparation method thereof. The sheath is prepared from, by weight, 90-100 partsof polyvinyl chloride; 4 to 7 parts of titanium dioxide nanometer fiber; 1-2 parts of antimony trioxide; and 4-6 parts of trichloroethyl phosphate. Polyvinyl chloride (PVC) has good flame retardant property, and SbCl3 generated by Cl and Sb in PVC combustion can play a role in capturing free radicals and isolating air, therefore, the antimony trioxide added into the polyvinyl chloride can generate a better flame-retardant effect on polyvinyl chloride. The titanium dioxide nanofibers provide a skeleton supporting effect for the charring process of the system in the thermal degradation processof the polymer; amorphous carbon particles are attached to a network framework to generate a continuous compact barrier carbon layer with few holes, the barrier effect of the expansion carbon layer ona polymer, a heat source and oxygen is enhanced, the further combustion process of the polymer is delayed, and the limit oxygen index of the system is increased.

Description

technical field [0001] The invention relates to the field of electric wires and cables, more specifically, it relates to a flame-retardant cable sheath and a preparation method thereof. Background technique [0002] Wire and cable is a wire product used to transmit electric energy, information and realize electromagnetic energy conversion. It mainly includes a guide core and a sheath. The sheath covers the guide core and plays a good role in protecting the guide core. [0003] The Chinese patent with the authorized announcement number CN205751670U discloses a cross-linked polyvinyl chloride insulated polyvinyl chloride sheathed power cable, including an insulated polyvinyl chloride sheath, a copper core wire and two test wires arranged side by side, the copper core wire and The test wire is set in the sheath, the outer surface of the copper core wire is wrapped with a refractory layer, and the outer surface of the refractory layer is wrapped with a cross-linked polyvinyl chl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K7/08C08K3/22C08K5/521C08K9/12C08K3/30C08K3/38C08K3/32C08K13/06C08K13/04H01B3/44
CPCC08K3/2279C08K3/30C08K3/32C08K3/38C08K5/521C08K7/08C08K9/12C08K13/04C08K13/06C08K2003/3045C08K2003/323C08K2003/387C08L2201/02C08L2201/08C08L2203/202H01B3/443C08L27/06
Inventor 陈光权汪一辉周朋
Owner 温州网牌电线电缆有限公司
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