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Nuclear power 1E-grade K3-class heat-shrinkable tubing material and preparation thereof

A heat-shrinkable sleeve, nuclear power technology, applied in the direction of circuits, electrical components, insulated cables, etc., to achieve the effects of excellent mechanical properties, excellent heat resistance, and excellent radiation resistance

Inactive Publication Date: 2013-05-08
SHANGHAI SPECIAL CABLE ELECTROTECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a new challenge for domestic heat shrinkable materials

Method used

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  • Nuclear power 1E-grade K3-class heat-shrinkable tubing material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]29g POE (Model 810), 31g EVA (Model 260), 37g EPDM 3072EM, 3.5g antioxidant RD, 1.8g antioxidant MB, 2g antioxidant 1010, 34g coupling treated aluminum hydroxide, 20g coupling Add magnesium hydroxide after joint treatment, 15g nitrogen-based flame retardant FR-PN, 15g zinc borate, 3g silicone rubber (120-1), 1.5g colorant (N330) and 0.1g ultraviolet light absorber OB into the internal mixer In the process, knead at 135°C for 20 minutes to complete the first internal mixing and granulation, where the temperature of each section of the granulator is 130°C, 130°C, and 130°C; and then knead at 135°C for 15 minutes to complete The second banburying and granulation; then mix the masterbatch of the second banburying and granulation at 135°C for 10 minutes, add 5g of lubricant fly-off, 2ml of sensitizer (TAIC), and mix at 135°C Practice for 10 minutes. Obtain the masterbatch of nuclear power 1E grade K3 heat-shrinkable sleeve material, press the masterbatch with a flat vulcaniz...

Embodiment 2

[0051] 29g POE (model 810), 18g EVA (model 260), 13g EVA (model 14-2), 37g EPDM 3072EM, 3.5g antioxidant RD, 1.8g antioxidant MB, 2g antioxidant 1010, 34g coupling Treated aluminum hydroxide, 20g coupling treated magnesium hydroxide, 15g nitrogen-based combustion additive FR-PN, 15g zinc borate, 3g silicone rubber (120-1), 1.5g colorant (N330) and 0.1g ultraviolet light The absorbent OB is added to the internal mixer, and mixed at 135°C for 20 minutes to complete the first internal mixing and granulation. The temperature of each section of the granulator is 130°C, 130°C, and 130°C; and then mixed at 135°C After 15 minutes of refining, complete the second internal mixing and granulation; then mix the masterbatch for the second internal mixing and granulation at 135°C for 10 minutes, then add 5g of lubricant and 2ml of sensitizer (TAIC) , and kneaded at 135° C. for 10 minutes. Obtain the masterbatch of nuclear power 1E grade K3 heat-shrinkable sleeve material, press the masterb...

Embodiment 3

[0053] Put 29g POE (model 810), 31g EVA (model 14-2), 37g EPDM rubber (model 3072EM), 3.5g antioxidant RD, 1.8g antioxidant MB, 2g antioxidant 1010, 34g coupling treated hydrogen Alumina, 20g magnesium hydroxide after coupling treatment, 15g nitrogen-based combustion additive FR-PN, 15g zinc borate, 3g silicone rubber (120-1), 1.5g colorant (N330) and 0.1g ultraviolet light absorber OB Put it into the internal mixer, mix at 135°C for 20 minutes, and complete the first internal mixing and granulation, where the temperature of each section of the granulator is 130°C, 130°C, 130°C; then mix at 135°C for 15 minutes Finally, complete the second banburying and granulation; then mix the masterbatch of the second banburying and granulation at 135°C for 10 minutes, add 5g of lubricant, 2ml of sensitizer (TAIC), and mix at 135°C °C for 10 minutes. Obtain the masterbatch of nuclear power 1E grade K3 heat-shrinkable sleeve material, press the masterbatch with a flat vulcanizing machine t...

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Abstract

The invention relates to a nuclear power 1E-grade K3-class heat-shrinkable tubing material and preparation thereof. The nuclear power 1E-grade K3-class heat-shrinkable tubing material of the invention comprises the following components by weight: 20-50 parts of polyolefin resin; 40-50 parts of a halogen-free flame retardant; 2-3 parts of an antiager; 15-20 parts of a flexibilizer; 1.5-2 parts of an anti-oxidant; 1-5 parts of a modifier; and 3-10 parts of a plastic processing additive. The material of the invention is prepared by selecting raw materials of the substrate resin, the halogen-free flame retardant, the antiager, the flexibilizer, the anti-oxidant, the modifier, and a crosslinking sensitizing agent according to certain ratios and through a series of process steps; the obtained nuclear power 1E-grade K3-class heat-shrinkable tubing material has relatively balanced and excellent mechanical properties, low-smoke performance, non-toxic performance, flame retardation, heat resistance, irradiation resistance, and the like, and especially has excellent heat resistance and irradiation resistance. The nuclear power 1E-grade K3-class heat-shrinkable tubing material is widely applicable to the nuclear power station field.

Description

technical field [0001] The invention relates to a nuclear power grade 1E K3 heat-shrinkable sleeve material and its preparation, belonging to the field of nuclear power materials. Background technique [0002] 1E heat-shrinkable cable accessories for nuclear power plants refer to the safety level of electrical system equipment that completes the emergency shutdown of the reactor; isolation of the containment, emergency cooling of the core, export of residual heat from the reactor, heat export from the containment of the reactor, and prevention of discharge of radioactive substances to the surrounding environment. Products are divided into three categories according to the safety category of nuclear power plant electrical system equipment: K1, K2, and K3. [0003] Among them, K3 products are installed outside the containment of nuclear reactors, and can still perform their prescribed functions under normal environmental conditions and SL2 (safety shutdown ground motion) loads...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/08C08K13/06C08K9/06C08K3/22C08K3/38B29B7/28B29C43/58H01B3/44H01B7/00
Inventor 尤丽萍严永昌刘旌平孙萍严波何壹成
Owner SHANGHAI SPECIAL CABLE ELECTROTECHN
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