Ag quantum dot composited anti-static organic silicon rubber as well as preparation method and application thereof

A technology of silicone rubber and quantum dots, applied in the field of silicone, can solve the problem that silicone rubber does not have antistatic property, etc., and achieve the effects of excellent antistatic property, good temperature resistance and simple preparation method

Active Publication Date: 2016-05-18
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that silicone rubber does not have antistatic properties, the present invention provides an antistatic silicone rubber and a preparation method thereof. The obtained silicone rubber has excellent antistatic properties and is suitable for packaging electronic components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Add 600g of 0.1mol / L AgNO to a clean 1000ml three-neck bottle shielded from light with tinfoil 3 Aqueous solution, add 50g of 0.01mol / L sodium borohydride aqueous solution dropwise within 30min under stirring at room temperature, continue to react at room temperature for 2h after the dropwise addition, settle the system and centrifuge to obtain a solid; wash the obtained solid with absolute ethanol for 3 times Dry in the dark under a vacuum degree of 0.06Mpa to obtain 5.832g of silver quantum dots.

[0026]2) Add 296g D4 to a 500ml clean three-necked flask, remove moisture at 0.096MPa / 35-40°C, then add 1.86g vinyl double-capped head and 5.92g tetramethylammonium hydroxide silicon alkoxide, at 100°C Polymerize for 5 hours, then heat up to 135-140°C to decompose the catalyst for about 3 hours, and then remove low molecular weight compounds at 0.096MPa / 180°C to obtain 258g of vinyl silicone oil Me 2 ViSiO(Me 2 SiO) 400 SiViMe 2 (vinyl content 6.6×10 -5 mol / g); Add ...

Embodiment 2

[0030] Get the gained silver quantum dot 0.8g in embodiment 1, vinyl silicone oil Me 2 ViSiO(Me 2 SiO) 400 SMMe 2 32.3g and hydrogen silicone oil Me 2 HSiO(Me 2 SiO) 400 (MeHSiO)7SiHMe 2 3.33g (the molar ratio of silicon hydrogen to silicon vinyl is 0.7:1), add 10g of fumed silica, 2g of precipitated silica and 0.043g (about 15ppm) of dicyclopentadiene platinum dichloride, and mix well , degassing at a vacuum of 0.09Mpa for 30 minutes, and vulcanizing at 120° C. for 2 hours to obtain an antistatic silicone rubber 2 compounded with Ag quantum dots.

[0031] A kind of Ag quantum dot composite antistatic organosilicon rubber 2 conductivity of the gained of embodiment 2 records 1.0 * 10 -10 Ω·m, the hardness is 48shoreA component, the tensile strength is 2.65MPa, and the elongation is 220%.

Embodiment 3

[0033] Get the gained silver quantum dot 1.2g in embodiment 1, vinyl silicone oil Me 2 ViSiO(Me 2 SiO) 400 SiViMe 2 22.7g and hydrogen silicone oil Me 2 HSiO(Me 2 SiO) 400 (MeHSiO) 7 SiHMe 2 10g (silicon hydrogen to silicon vinyl molar ratio 2:1), add 10g of fumed silica, 2g of precipitated silica and 0.043g (about 15ppm) of platinum complexed by methyl vinyl siloxane After being mixed evenly, it was defoamed for 5 minutes under a vacuum degree of 0.07Mpa, and vulcanized at 140° C. for 2 hours to obtain an antistatic silicone rubber 3 composed of Ag quantum dots.

[0034] The conductivity of a kind of Ag quantum dot composite antistatic silicone rubber 3 obtained in Example 3 is measured as 1.0×10 -9 Ω·m, the hardness is 48shoreA, the tensile strength is 2.30MPa, and the elongation is 200%.

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Abstract

The invention relates to the field of organic silicon and provides anti-static organic silicon rubber and a preparation method thereof aiming to solve the problem that the organic silicon rubber does not have an antistatic property. The hardness of the prepared organic silicon rubber is 5-65 Shore A, the tensile strength is 0.2-0.8 MPa, the elongation at break is 40%-300%, and the organic silicon rubber has excellent antistatic property and is applied to packaging of electronic components.

Description

technical field [0001] The invention relates to the field of organic silicon, in particular to an antistatic organic silicon rubber compounded with Ag quantum dots and a preparation method thereof, which is applied to the packaging of electronic components. technical background [0002] Static electricity is the result of the local imbalance of the positive and negative charges of an object, which is formed by the transfer of electrons or ions. The reason for the unbalanced distribution of electrons is that electrons are derailed by external forces. This external force includes various energies (such as kinetic energy, potential energy, thermal energy, chemical energy, etc.). Therefore, in daily life, it is like contact, friction, and washing. Electrolytic, piezoelectric, bias, and induction lights all generate static electricity. Static electricity may cause damage to electronic components as follows: [0003] 1. Electrostatic adsorption of dust, reducing the insulation r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08K3/08C08K3/36
CPCC08K2201/014C08L83/04C08L2201/04C08L2201/08C08L2205/025C08K2003/0806C08K3/36
Inventor 杨雄发陈琼刘佳申艳平来国桥罗蒙贤
Owner HANGZHOU NORMAL UNIVERSITY
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