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A kind of organosilicon flexible encapsulation material and its preparation method and application

An encapsulation material, silicone technology, applied in the field of PTC current-limiting sheet encapsulation materials, can solve the problems of being unable to meet the multiple impacts of large currents, high and low temperature impacts, etc., and achieve high and low temperature impact resistance, on-off test resistance , Excellent electrical performance

Active Publication Date: 2022-04-05
CHENGDU TALY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Aiming at the problems that traditional encapsulation materials cannot meet the multiple impacts of large currents and high and low temperature impacts, the present invention has developed a type of high-performance PTC current-limiting sheet encapsulation material, which is composed of flexible organic silicon segments and is resistant to high Low temperature impact, excellent external insulation performance

Method used

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  • A kind of organosilicon flexible encapsulation material and its preparation method and application
  • A kind of organosilicon flexible encapsulation material and its preparation method and application
  • A kind of organosilicon flexible encapsulation material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Compound preparation:

[0070] Mix 100 parts of (a) vinyl polysiloxane (5000mPa.s, V-5000, Jiangsu Kexing New Material Co., Ltd.), 2 parts of (f) methyltrimethoxysilane, 20 parts of (e1), 80 parts (e2), 30 parts of (e3), and 10 parts of (e4) in the kneader tank, stir evenly, treat at 80°C for 2.5 hours, dry at 110°C for 3 hours, take it out and grind it on a three-roll machine for 2 times to obtain a uniform dispersion of fillers base glue.

[0071] With glue:

[0072] Take the base compound obtained above and put it into the compounding kettle, add 0.05 part of polymerization inhibitor (i) ethynyl cyclohexanol, 0.05 part of catalyst (d) Pt-5000 (Heraeus Pt-5000), 2 parts of viscosity increaser Agent component (b) (epoxy functional silicone oligomer: SL 9250, Dowsil), component (c) hydrogen-containing polysiloxane (SH-75, viscosity 60mPa.s, Jiangsu Kexing New Material Co., Ltd.) 4 parts, 2 parts special color masterbatch (g) (carbon black Masterbatch, SM-001, Cheng...

Embodiment 2

[0074] Compound preparation:

[0075] 100 parts of component (a) vinyl polysiloxane (15000mPa.s, V-15000 Jiangsu Kexing New Material Co., Ltd.), 2 parts of (f) methyltrimethoxysilane, 20 parts of (e1), 100 Part (e2) was placed in a kneader, stirred evenly, treated at 80°C for 2.5 hours, dried at 110°C for 3 hours, taken out and milled twice on a three-roll machine to obtain a base compound with uniform filler dispersion.

[0076] With glue:

[0077] Get the basic compound obtained above into the rubber compounding kettle, add 0.05 part of polymerization inhibitor (i) ethynyl cyclohexanol, 0.05 part of catalyst (d) Pt-5000, 2 parts of tackifier component (b) (cyclo Oxygen-functional silicone oligomers: SL 9250, Dowsil), 4 parts of hydrogen-containing polysiloxane (c) (SH-75, viscosity 60mPa.s, Jiangsu Kexing New Material Co., Ltd.), 2 parts of special color masterbatch (g) (phthalocyanine green masterbatch Material, SM-007, Chengdu Tuoli Technology Co., Ltd.), 20 parts of d...

Embodiment 3

[0079] Compound preparation:

[0080] 100 parts of (a) vinyl polysiloxane (15000mPa.s, V-15000 Jiangsu Kexing New Material Co., Ltd.), 2 parts of (f) methyltrimethoxysilane, 20 parts of (e1), 70 parts of ( e2), 30 parts (e3), 5 parts (e4) in a kneader, stir evenly, treat at 80°C for 2.5 hours, dry at 110°C for 3 hours, take it out and grind it on a three-roll machine for 2 times to obtain a base rubber with uniform filler dispersion material.

[0081] With glue:

[0082] Take the base compound obtained above and put it in the compounding kettle, add 0.05 parts of polymerization inhibitor (i) ethynyl cyclohexanol, 0.05 parts of catalyst (d) Pt-5000, 2.5 parts of tackifier component (b) (3 -(2,3-Glycidoxy)propyltrimethoxysilane, KH-560, Jiangxi Chenguang New Materials Co., Ltd.), hydrogen-containing polysiloxane (c) (SH-75, viscosity 60mPa.s , Jiangsu Kexing New Material Co., Ltd.) 4 parts, 10 parts of special color masterbatch (g) (iron red masterbatch, SM-003, Chengdu Tuoli...

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Abstract

The invention relates to an organic silicon flexible encapsulation material and its preparation method and application, especially for the encapsulation material of a PTC current limiting sheet. The organosilicon flexible encapsulation material of the present invention includes components such as vinyl polysiloxane, hydrogen polysiloxane, tackifier, catalyst, functional filler, treatment agent, color masterbatch, diluent and the like. The use process of the material of the invention satisfies the existing silicone resin material construction process, and the encapsulated PTC current-limiting sheet product has excellent electrical properties, high and low temperature impact resistance, and on-off test resistance. The encapsulated PTC current limiter can be used in occasions where there is a large rush current such as motor startup and PTC heater startup, and the encapsulated welded PTC starter product can completely replace the shell-type PTC starter.

Description

technical field [0001] The invention relates to an organic silicon flexible encapsulation material and its preparation method and application, especially for the technical field of encapsulation materials for PTC current limiting sheets. Background technique [0002] PTC is a thermistor with a positive temperature coefficient, and its main uses can be divided into switching and heating. [0003] The PTC material has the characteristics of heat-sensitive, current-limiting, and time-delay switching, as well as non-contact, noise-free and long service life. It can be applied to refrigerator startup, motor transformer protection, program-controlled switch protection, mosquito repellent, and curling iron. , Electric irons and other small household appliances. [0004] Utilizing the characteristics of heating PTC such as stable performance, rapid temperature rise, and little influence from power supply voltage fluctuations, various heater products have been widely used in heaters...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K13/04C08K7/26C08K3/22C08K3/34C08K3/36C08K3/04C08K5/5435
CPCC08L83/04C08L2203/206C08L2310/00C08L2205/025C08L2201/08C08K2201/003C08K2201/006C08K2201/014C08K2003/2227C08K13/04C08K7/26C08K3/22C08K3/34C08K3/36C08K3/04C08K5/5435
Inventor 罗兴成吴先鹏刘旭李富强李强唐玲张程夕陶云峰
Owner CHENGDU TALY TECH CO LTD