Nylon material for pin type composite insulator cap-shaped connector for power grid power transmission and distribution line and forming method

A technology of pin insulators and power transmission and distribution lines, which is applied to circuits, insulators, electrical components, etc., and can solve problems such as high energy consumption, worn wires, and sassafras

Pending Publication Date: 2020-09-04
XIAN WEISHI TRANSMISSION & DISTRIBUTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the steel foot fittings used in the industry are hot-dip galvanized anti-corrosion treatment for forged steel technology fittings, and the steel cap fittings are hot-dip galvanized anti-corrosion treatment for cast steel technology fittings. There will be some disadvantages that can be improved during the use of steel cap fittings; such as wires There is a phenomenon of rubbing between the steel cap and the wear wire; there is a certain proportion of porosity in the casting process of the steel cap, which affects the distribution of the electric field; the casting process of the metal fittings is complex and energy-consuming; the product weight

Method used

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  • Nylon material for pin type composite insulator cap-shaped connector for power grid power transmission and distribution line and forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Mix 71% nylon resin PA66 with 29% nylon resin PA6. Add white oil and stir for 10min-12min, then add all the components of the pellets according to the ratio into a high-speed mixer and stir for 15min-18min to obtain a premix; the specific components are (mixed nylon resin 62% ~ 66%; MAH toughening Agent 3%~6%; main antioxidant 0.2%~0.5%, auxiliary antioxidant 0.2%~0.5%, ultraviolet absorber 0.2%~0.5%, light stabilizer 0.2%~0.5%, wear resistance additive 1 %~3%)

[0035] Step 2: Put the premix into the main feeding hopper of the twin-screw extruder, and add the glass fiber to the auxiliary hopper of the co-extrusion. The added amount accounts for 28% to 33% of the total mass of the formula. Simultaneous extrusion and granulation; Extrusion temperature: feeding Material section 220-240℃, shearing plasticization section 240-260℃, head 250-280℃;

[0036] Step 3: Dry the granulated particles in a blast drying oven at 130°C for 4h-5h;

[0037] Step 4: The temperature of e...

Embodiment 2

[0042] Step 1: Mix 71% nylon resin PA66 with 29% nylon resin PA6. Add white oil and stir for 10min-12min, then add all the components of the pellets according to the ratio into a high-speed mixer and stir for 15min-18min to obtain a premix; the specific components are (mixed nylon resin 62% ~ 66%; MAH toughening Agent 3%~6%; main antioxidant 0.2%~0.5%, auxiliary antioxidant 0.2%~0.5%, ultraviolet absorber 0.2%~0.5%, light stabilizer 0.2%~0.5%, wear resistance additive 1 %~3%)

[0043] Step 2: Put the premix into the main feeding hopper of the twin-screw extruder, and add the glass fiber to the auxiliary hopper of the co-extrusion. The added amount accounts for 28% to 33% of the total mass of the formula. Simultaneous extrusion and granulation; Extrusion temperature: feeding Material section 220-240℃, shearing plasticization section 240-260℃, head 250-280℃;

[0044] Step 3: Dry the granulated particles in a blast drying oven at 130°C for 4h-5h;

[0045] Step 4: The temperature of e...

Embodiment 3

[0050] Step 1: Combine nylon resin PA66 with toughening agent MAH. Add white oil and stir for 10min-12min, then add all the components of the pellets according to the ratio into a high-speed mixer and stir for 15min-18min to obtain a premix; the specific components are (PA66 nylon resin 62%~66%; MAH toughening Agent 3%~6%; main antioxidant 0.2%~0.5%, auxiliary antioxidant 0.2%~0.5%, ultraviolet absorber 0.2%~0.5%, light stabilizer 0.2%~0.5%, wear resistance additive 1 %~3%)

[0051] Step 2: Put the premix into the main feeding hopper of the twin-screw extruder, and add the glass fiber to the auxiliary hopper of the co-extrusion. The added amount accounts for 28% to 33% of the total mass of the formula. Simultaneous extrusion and granulation; Extrusion temperature: feeding Material section 220-240℃, shearing plasticization section 240-260℃, head 250-280℃;

[0052] Step 3: Dry the granulated particles in a blast drying oven at 130°C for 4h-5h;

[0053] Step 4: The temperature of eac...

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Abstract

The invention relates to a nylon material of a pin-type composite insulator cap-shaped connector for a power grid power transmission and distribution line and a forming method. The nylon material comprises the following components in percentage by mass: 62%-66% of nylon resin, 28%-33% of glass fiber, 3%-6% of a toughening agent, 0.2%-0.5% of a main antioxidant, 0.2%-0.5% of an auxiliary antioxidant, 0.2%-0.5% of an ultraviolet absorbent, 0.2%-0.5% of a light stabilizer and 1%-3% of a wear-resistant additive, the viscosity of the nylon resin is 3.2 +/-0.01; the grafting rate of the toughening agent is 0.8 to 1.2%; the nylon resin is PA66 polyhexamethylene adipamide, PA6 polyamide 6 or a mixture of the PA66 polyhexamethylene adipamide and the PA6 polyamide 6. After polymerization processing,the material performance is excellent, the mechanical performance, the electrical performance, the environmental aging resistance, the high and low environmental temperature resistance and the material wear resistance of the composite product are excellent, and the safe use condition of the product is met.

Description

Technical field [0001] The invention belongs to a pin-type composite insulator cap-type connector, and relates to a nylon material and a molding method for the pin-type composite insulator cap-type connector for power transmission and distribution lines. Background technique [0002] Pin-type composite insulators for power transmission and distribution lines are used for insulating connection between conductors and towers. The composition is composed of the lower steel foot fittings and the pole tower crossarm connection, the upper steel cap and the wire connection, and the mechanical pressure between the two fittings The connected insulating core rod and vulcanized silicone rubber serve as the main insulation. At present, the steel foot fittings used in the industry are forged steel process fittings with hot-dip galvanizing anti-corrosion treatment, and steel cap fittings are cast steel process fittings with hot-dip galvanizing anti-corrosion treatment. Steel cap fittings may ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L51/04C08L87/00C08K13/04C08K7/14H01B19/00
CPCC08L77/06H01B19/00C08L2205/02C08L2205/035C08L2201/08C08L2203/20C08L77/02C08L51/04C08K13/04C08K7/14C08L51/003C08L87/005
Inventor 吴亚民袁奔
Owner XIAN WEISHI TRANSMISSION & DISTRIBUTION TECH CO LTD
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