IE-grade KI-type heat-shrinkable material for nuclear power and preparation technology thereof

A heat-shrinking and nuclear power technology, applied in the field of cable accessories, can solve the problems of toxic substances, unsatisfactory comprehensive physical and chemical properties of radiation resistance of cable insulation materials, etc., and achieve improved radiation resistance, excellent radiation resistance, and good mechanical properties. Effect

Active Publication Date: 2011-06-22
中科英华长春高技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a nuclear power 1E grade K1 heat shrinkable material, which solves the problem that the radiation resistance and other comprehensive physical and chemical properties of the existing nuclear power cable insulation materials are not ideal, and contain a large amount of toxic substances.

Method used

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  • IE-grade KI-type heat-shrinkable material for nuclear power and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 490g of LIM2600 silicone resin, 12g of antioxidant AT-10, 210g of aluminum hydroxide, 110g of magnesium hydroxide, 45g of nitrogen-based flame retardant (FR-PN Shenzhen Hongtaiji Industrial Co., Ltd.), 35g of EPDM 4045 , 35g of high phenyl silicone rubber (phenyl content: 20%) was added to the internal mixer, mixed for 20 minutes at 135°C, then 20g of lubricant stearic acid, 15ml of sensitizer and 12ml of tin mercaptide were added to heat Stabilizer, knead for 10 minutes. Obtain the masterbatch of 1E grade K1 heat-shrinkable material, press the material with a hydraulic press to prepare samples, and then irradiate 50KGy with an electron accelerator to obtain nuclear power 1E grade K1 heat-shrinkable material 1 # .

Embodiment 2

[0028] 510g of LIM2600 silicone resin, 13g of antioxidant 7910, 185g of aluminum hydroxide, 120g of magnesium hydroxide, 70g of nitrogen-based flame retardant (FR-PN Shenzhen Hongtaiji Industrial Co., Ltd.), 15g of EPDM rubber, 12g of benzene Silicone rubber (phenylene content: 21%, vinyl content 0.76%, intrinsic viscosity: 0.92dl / g) was added in the internal mixer, and mixed for 20 minutes at 135°C, then 20g of lubricant zinc stearate was added, sensitive 10ml of chemical agent and 12ml of tin mercaptide heat stabilizer were kneaded for 10 minutes. Obtain the masterbatch of 1E grade K1 type heat shrinkable material, press the material with a hydraulic press to prepare samples, and then irradiate 75KGy with an electron accelerator to obtain nuclear power 1E grade K1 type heat shrinkable material 2 # .

Embodiment 3

[0030] 510g of WC-22 silicone resin, 12g of antioxidant 1010, 185g of aluminum hydroxide, 115g of magnesium hydroxide, 50g of nitrogen-based flame retardant (FR-PN Shenzhen Hongtaiji Industrial Co., Ltd.), 15g of high phenyl silicone rubber ( Phenyl content: 10%), 14g phenylene silicone rubber (phenylene content: 21%, vinyl content 0.76%, intrinsic viscosity: 0.92dl / g) and 12ml methyl mercaptide heat stabilizer are added to the internal mixer , Mixed at 135°C for 20 minutes, then added 20 g of lubricant fly, 10 ml of sensitizer, and kneaded for 10 minutes. Obtain the masterbatch of 1E grade K1 heat-shrinkable material, press the material with a hydraulic press to prepare samples, and then irradiate 90KGy with an electron accelerator to obtain nuclear power 1E grade K1 heat-shrinkable material 3 # .

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Abstract

The invention provides an IE-grade KI-type heat-shrinkable material for nuclear power and a preparation technology thereof. A compound flame-retardant system, a plastic modifier and an irradiation resistant additive are compounded, mixed together and modified to prepare the IE--grade KI-type heat-shrinkable material, and the property of the IE-grade KI-type heat-shrinkable material meets the related requirement of the IEEE383-2003 standard.

Description

technical field [0001] The invention provides a nuclear power 1E grade K1 heat-shrinkable material, and also discloses a preparation process of the heat-shrinkable material, which belongs to the technical field of cable accessories. Background technique [0002] Nuclear power plant 1E heat-shrinkable cable accessories 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 electrical system equipment in nuclear power plants: K1, K2, and K3. Among them, K1 products. Installed inside the nuclear reactor containment, it can still perform its specified functions under normal environmental conditions and under SL2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/00C08L23/16C08L83/07C08K13/02C08K3/22C08J3/28
Inventor 徐义全冉祥海戚云霞尤丽萍
Owner 中科英华长春高技术有限公司
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