CN104927359A - Low-density silicone rubber for nuclear power - Google Patents
Low-density silicone rubber for nuclear power Download PDFInfo
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- CN104927359A CN104927359A CN201510372197.6A CN201510372197A CN104927359A CN 104927359 A CN104927359 A CN 104927359A CN 201510372197 A CN201510372197 A CN 201510372197A CN 104927359 A CN104927359 A CN 104927359A
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Abstract
The invention discloses low-density fireproof silicone rubber and a preparation method thereof. The low-density silicone rubber is obtained by mixing a component A with a component B according to a volume ratio of 1: (0.98-1.02) and curing the mixture at the temperature of 0-40 DEG C. The component A comprises alpha, omega-dihydroxy polysiloxane, hydroxy silicone oil, fillers, filling agents and catalysts proportionally. The component B comprises alpha, omega-dihydroxy polysiloxane, hydroxy silicone oil, fillers and vinyl silicone oil. The low-density silicone rubber for nuclear power can serve as a blocking material, has basic mechanical property and good watertight and airtight performance and has excellent irradiation resistance.
Description
Technical field
The present invention relates to a kind of silicone rubber, be specifically related to a kind of nuclear power low density silicone rubber and Synthesis and applications thereof, belong to nuclear material field.
Background technology
The object of nuclear power plant's fire-proof curtain is to provide non-energy moving boundary around a certain space, this barrier should have the ability to bear and contain the fire of expectation, and do not allow this fire spread to the material of the non-fire side of fire-proof curtain or items, or do not make these materials and items that direct or indirect damage occurs, and require that fulfiling of these functions can complete under the condition without any Firefighting System action.Fireproof blocking be adopt fire-proof sealing material empty opening, perforated holes, building gap etc. are sealed and are clogged, make its regulation fire resistance period in respective members collaborative work, a kind of technical measures spread to stop heat, flame and fire and smoke spread.
The fire-proof sealing material that nuclear power plant commonly uses has inorganic fire-proof cement, siliconefoam and silicone rubber.Although inorganic fire cement was once widely used because of cheap, but because cured strength is high, make construct inconvenience when changing or increase penetration piece and easily damage penetration piece, and quality is also stable not, thus at present do not re-use already in the nuclear power plant of the nuclear power big country such as the U.S., France, domestic nuclear power new project also has the trend abandoning this material.Based on this, silicone material becomes the optimal selection of current nuclear power plant hole fireproof blocking.
Low density silicone rubber can react rapidly in block-up position at ambient temperature and form cellular elastic sealed structure, the silicone fire-proof sealing material related to due to this project uses in Nuclear Power Station reactor containment, therefore comparatively harsh to its performance requriements, the performance such as fire-resistant, resistance to irradiation, airtight, watertight, anti-DBA need be possessed simultaneously, and require nontoxic, not halogen-containing and element sulphur, harm etc. can not be produced to contact member and surrounding environment.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of nuclear power low density silicone rubber and Synthesis and applications thereof are provided.Nuclear power low density silicone rubber of the present invention possesses the performance such as high temperature resistant, resistance to irradiation, airtight, watertight, anti-DBA simultaneously, and requires nontoxic, not halogen-containing and element sulphur, can not produce harm to contact member and surrounding environment.
Technical scheme of the present invention is as follows: a kind of nuclear power low density silicone rubber, comprises component A and B component that volume ratio is 1:0.98 ~ 1.02, wherein,
Described component A raw material composition and proportioning as follows:
Described B component raw material composition and proportioning as follows:
On the basis of technique scheme, the present invention can also do following improvement.
Further, the volume ratio of component A and B component is 1:1.
Further, described α, the range of viscosities of alpha, omega-dihydroxy polysiloxane is 800 ~ 1500cp.
Further, the range of viscosities of described hydroxy silicon oil is 800 ~ 1200cp.
Further, the range of viscosities of described vinyl silicone oil is 20 ~ 40cp.
Further, described metal catalyst is platinum catalyst or tin catalyst.
Further, described weighting agent is aerosil.
Further, described filler is selected from light calcium carbonate, wollastonite or silicon powder.
Second aspect present invention discloses the preparation method of aforementioned nuclear power low density silicone rubber, comprises the following steps:
1) preparation of component A: by the α in component A raw material, alpha, omega-dihydroxy polysiloxane and hydroxy silicon oil add in reactor, at 20 ~ 35 DEG C, mixing 10 ~ 40min under vacuum tightness 0.05 ~ 0.1MPa, metal catalyst, filler and weighting agent is added again in above mixing solutions, 30 ~ 40min is uniformly mixed with high speed dispersor, vacuum outgas 30 ~ 40min, obtained component A;
2) preparation of B component: by the α in B component, alpha, omega-dihydroxy polysiloxane, vinyl silicone oil, and hydroxy silicon oil adds in reactor, 10 ~ 40min is stirred at 20 ~ 35 DEG C, filler and weighting agent is added again in above mixing solutions, be uniformly mixed 30 ~ 40min with high speed dispersor, and keep temperature 20 ~ 30 DEG C in tank, vacuum outgas 30 ~ 40min; Obtained B component;
3) by step 1) component A prepared and step 2) B component prepared mixes 1:0.98 ~ 1.02 by volume, and 0 ~ 40 DEG C of solidification 2 ~ 10min, obtains low density silicone rubber.
Third aspect present invention discloses the application of aforementioned nuclear power low density silicone rubber as plugging material.
Low density silicone rubber of the present invention is as follows as the applicable field of plugging material: carbonic acid gas and halogen guard plot, general fireproof partition, have the tubing system of vertical translation, have the tubing system of small size displacement, engineering design safeguard system etc.
Low density silicone rubber of the present invention is a kind of elasticity high temperature sealing material.Employing liquid is constructed, and can guarantee that the gap between penetration piece is fully filled, be applicable to the requirements such as high temperature resistant, airtight.Be A, B two liquid components under normal circumstances, component A is black, and B component is light yellow, so that identify and check whether mixing is abundant.After mixing, a kind of foam body is cured as in proportion under room temperature.Can a small amount of heat release (36 ℉) in solidification process.This product is to contacted cable external insulation skin non-corrosiveness, and the gas discharged during burning is harmless, to surrounding devices and cable non-corrosiveness.
The invention has the beneficial effects as follows: low density silicone rubber of the present invention has fabulous sealing property and thermal resistance performance.In secondary construction process, easily constructing when changing or increase penetration piece, not damaging penetration piece.Stubbed insulating tool or equipment can be used selectively to remove easily.It is all very convenient to increase newly or remove, the structure that the low density silicone rubber newly increased can be combined into one with the material of prior cured.During use, adopt liquid construction, can guarantee that the gap between penetration piece is fully filled.Product application after solidification is lasting, resistant to damage, surface easily decontamination.And to contacted cable external insulation skin non-corrosiveness, the gas discharged during burning is harmless, to surrounding devices and cable non-corrosiveness.
Accompanying drawing explanation
Fig. 1 is the use structural representation of low density silicone rubber blocking pipe penetration piece when running through body of wall;
Fig. 2 is the cut-away view of low density silicone rubber blocking pipe penetration piece when running through body of wall.
Accompanying drawing marks:
1. body of wall 2. pipe penetration 3. low density silicone rubber occluding body
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
The preparation of low density silicone rubber of embodiment 1 nuclear power
1. raw material composition
Component A: α, alpha, omega-dihydroxy polysiloxane (purchased from Laiyang great Yi chemical industry) 30kg; Hydroxy silicon oil (purchased from Laiyang great Yi chemical industry) 15kg; Metal catalyst 5kg; Light calcium carbonate 35kg; Aerosil 15kg.
B component: α, alpha, omega-dihydroxy polysiloxane (purchased from Laiyang great Yi chemical industry) 30kg; Hydroxy silicon oil (purchased from Laiyang great Yi chemical industry) 5kg; Vinyl silicone oil (purchased from Laiyang great Yi chemical industry) 15kg; ; Light calcium carbonate 45kg; Aerosil 5kg.
2. preparation method
1) preparation of component A: by the α in component A raw material, alpha, omega-dihydroxy polysiloxane and hydroxy silicon oil add in reactor, 20 DEG C, mix 40min under vacuum tightness 0.1MPa, metal catalyst, filler and weighting agent is added again in above mixing solutions, 30min is uniformly mixed, vacuum outgas 40min with high speed dispersor; Obtained component A;
2) preparation of B component: by the α in B component, alpha, omega-dihydroxy polysiloxane, vinyl silicone oil, and hydroxy silicon oil adds in reactor, 40min is stirred at 20 DEG C, filler and weighting agent is added again in above mixing solutions, be uniformly mixed 40min with high speed dispersor, and keep temperature 30 DEG C in tank, vacuum outgas 30min; Obtained B component;
3) by step 1) component A prepared and step 2) the B component 1:0.98 mixing by volume prepared, 0 DEG C of solidification 10min, obtains low density silicone rubber.
The preparation of low density silicone rubber of embodiment 2 nuclear power
1. raw material composition
Component A: α, alpha, omega-dihydroxy polysiloxane 34kg; Hydroxy silicon oil 10kg; Metal catalyst 1kg; Wollastonite 45kg, aerosil 10kg.
B component: α, alpha, omega-dihydroxy polysiloxane 35kg; Hydroxy silicon oil 5kg; Vinyl silicone oil 5kg; Aerosil 10kg; Wollastonite 45kg.
2. preparation method
1) preparation of component A: by the α in component A raw material, alpha, omega-dihydroxy polysiloxane and hydroxy silicon oil add in reactor, 35 DEG C, mix 10min under vacuum tightness 0.05MPa, metal catalyst, filler and weighting agent is added again in above mixing solutions, 40min is uniformly mixed, vacuum outgas 30min with high speed dispersor; Obtained component A;
2) preparation of B component: by the α in B component, alpha, omega-dihydroxy polysiloxane, vinyl silicone oil, and hydroxy silicon oil adds in reactor, 10min is stirred at 35 DEG C, filler and weighting agent is added again in above mixing solutions, be uniformly mixed 30min with high speed dispersor, and keep temperature 20 DEG C in tank, vacuum outgas 40min; Obtained B component;
3) by step 1) component A prepared and step 2) the B component 1:1.02 mixing by volume prepared, 40 DEG C of solidification 2min, obtain low density silicone rubber.
The preparation of low density silicone rubber of embodiment 3 nuclear power
1. raw material composition
Component A: α, alpha, omega-dihydroxy polysiloxane 40kg; Hydroxy silicon oil 10kg; Metal catalyst 5kg; Aerosil 10kg; Silicon powder 35kg.
B component: α, alpha, omega-dihydroxy polysiloxane 30kg; Hydroxy silicon oil 10kg; Vinyl silicone oil 15kg; Aerosil 10kg; Silicon powder 35kg.
2. preparation method
1) preparation of component A: by the α in component A raw material, alpha, omega-dihydroxy polysiloxane and hydroxy silicon oil add in reactor, 30 DEG C, mix 30min under vacuum tightness 0.1MPa, metal catalyst, filler and weighting agent is added again in above mixing solutions, 35min is uniformly mixed, vacuum outgas 35min with high speed dispersor; Obtained component A;
2) preparation of B component: by the α in B component, alpha, omega-dihydroxy polysiloxane, vinyl silicone oil, and hydroxy silicon oil adds in reactor, 40min is stirred at 30 DEG C, filler and weighting agent is added again in above mixing solutions, be uniformly mixed 35min with high speed dispersor, and keep temperature 25 DEG C in tank, vacuum outgas 40min; Obtained B component;
3) by step 1) component A prepared and step 2) the B component 1:1 mixing by volume prepared, 20 DEG C of solidification 10min, obtain low density silicone rubber.
Main performance index and the test method thereof of nuclear power low density silicone rubber prepared by embodiment of the present invention 1-3 see the following form 1.
Table 1 low density silicone rubber performance index
The use of embodiment 4 low density silicone rubber
1. install first
1) clean perforate;
2) component A and B component are fully mixed according to the mass ratio of 0.95 ~ 1.05:1;
3) pour the mixture after mixing into perforate position (pre-opened hole on body of wall), treat that it solidifies under room temperature, as shown in Figure 1-2.
Manual mixing can install, facility can be adopted to install as process need be accelerated.
2. run through for two times
Stubbed insulating tool or the position of equipment to nuclear power low density silicone rubber shutoff on body of wall can be used to remove easily.It is all very convenient to increase newly or remove, the structure that the low density silicone rubber newly increased can be combined into one with the material of prior cured.
3. pressure test
The test of many times result running through shutoff for electric and machinery shows that load performance is good, No leakage.Other operating mode changes depending on resistance to pressure.
4. resistance to irradiation
SE-Foam can bear the radiation of 1x108 Rads Gamma dosage and physicals without remarkable change.
5. decontamination
Material surface smoothly can decontamination, or adds low cost top layer at outside surface and make the easier decontamination of material.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a nuclear power low density silicone rubber, comprises component A and B component that volume ratio is 1:0.98 ~ 1.02, wherein,
Described component A raw material composition and proportioning as follows:
Described B component raw material composition and proportioning as follows:
2. nuclear power low density silicone rubber according to claim 1, is characterized in that, described α, and the range of viscosities of alpha, omega-dihydroxy polysiloxane is 800 ~ 1500cp.
3. nuclear power low density silicone rubber according to claim 1, is characterized in that, the range of viscosities of described hydroxy silicon oil is 800 ~ 1200cp.
4. nuclear power low density silicone rubber according to claim 1, is characterized in that, the range of viscosities of described vinyl silicone oil is 20 ~ 40cp.
5. nuclear power low density silicone rubber according to claim 1, is characterized in that, described metal catalyst is platinum catalyst or tin catalyst.
6. nuclear power low density silicone rubber according to claim 1, is characterized in that, described weighting agent is aerosil.
7. nuclear power low density silicone rubber according to claim 1, it is characterized in that, described filler is selected from light calcium carbonate, wollastonite or silicon powder.
8. the preparation method of nuclear power low density silicone rubber described in the arbitrary claim of claim 1-7, comprises the following steps:
1) preparation of component A: by the α in component A raw material, alpha, omega-dihydroxy polysiloxane and hydroxy silicon oil add in reactor, at 20 ~ 35 DEG C, mixing 10 ~ 40min under vacuum tightness 0.05 ~ 0.1MPa, metal catalyst, filler and weighting agent is added again in above mixing solutions, 30 ~ 40min is uniformly mixed with high speed dispersor, vacuum outgas 30 ~ 40min, obtained component A;
2) preparation of B component: by the α in B component, alpha, omega-dihydroxy polysiloxane, vinyl silicone oil, and hydroxy silicon oil adds in reactor, 10 ~ 40min is stirred at 20 ~ 35 DEG C, filler and weighting agent is added again in above mixing solutions, be uniformly mixed 30 ~ 40min with high speed dispersor, and keep temperature 20 ~ 30 DEG C in tank, vacuum outgas 30 ~ 40min; Obtained B component;
3) by step 1) component A prepared and step 2) B component prepared mixes 1:0.98 ~ 1.02 by volume, and 0 ~ 40 DEG C of solidification 2 ~ 10min, obtains low density silicone rubber.
9. nuclear power low density silicone rubber described in the arbitrary claim of claim 1-7 is as the application of plugging material.
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| CN201510372197.6A CN104927359A (en) | 2015-06-30 | 2015-06-30 | Low-density silicone rubber for nuclear power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108219473A (en) * | 2017-09-07 | 2018-06-29 | 北京化工大学 | Room temperature vulcanization Ceramic silicon rubber foam seal agent and preparation method thereof |
| CN109627777A (en) * | 2018-11-23 | 2019-04-16 | 烟台金润核电材料股份有限公司 | Flexible silicone body and its preparation method and application |
| CN111647273A (en) * | 2019-04-23 | 2020-09-11 | 烟台金润核电材料股份有限公司 | Low-density fireproof silicone rubber for nuclear power and preparation process thereof |
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| CN101153076A (en) * | 2006-09-29 | 2008-04-02 | 北京化工大学 | Polysiloxane resin with lateral group containing alkoxyl, producing method and use of the same |
| CN101747630A (en) * | 2008-12-01 | 2010-06-23 | 中国电力科学研究院 | Tracking-proof corrosion-proof room temperature silicon disulfide rubber composite |
| CN102504545A (en) * | 2011-12-02 | 2012-06-20 | 海龙核材科技（江苏）有限公司 | High-density fire-proof silicone rubber and preparation method thereof |
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2015
- 2015-06-30 CN CN201510372197.6A patent/CN104927359A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101153076A (en) * | 2006-09-29 | 2008-04-02 | 北京化工大学 | Polysiloxane resin with lateral group containing alkoxyl, producing method and use of the same |
| CN101747630A (en) * | 2008-12-01 | 2010-06-23 | 中国电力科学研究院 | Tracking-proof corrosion-proof room temperature silicon disulfide rubber composite |
| CN102504545A (en) * | 2011-12-02 | 2012-06-20 | 海龙核材科技（江苏）有限公司 | High-density fire-proof silicone rubber and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108219473A (en) * | 2017-09-07 | 2018-06-29 | 北京化工大学 | Room temperature vulcanization Ceramic silicon rubber foam seal agent and preparation method thereof |
| CN108219473B (en) * | 2017-09-07 | 2020-09-04 | 北京化工大学 | Room temperature vulcanization ceramic silicon rubber foam sealant and preparation method thereof |
| CN109627777A (en) * | 2018-11-23 | 2019-04-16 | 烟台金润核电材料股份有限公司 | Flexible silicone body and its preparation method and application |
| CN111647273A (en) * | 2019-04-23 | 2020-09-11 | 烟台金润核电材料股份有限公司 | Low-density fireproof silicone rubber for nuclear power and preparation process thereof |
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Address after: 264000 No. 11 middle Wolong Road, Shandong, Yantai Applicant after: YANTAI JINRUN NUCLEAR POWER MATERIAL Co.,Ltd. Applicant after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Address before: 264000 No. 11 middle Wolong Road, Shandong, Yantai Applicant before: YANTAI JINRUN FIRE ENGINEERING Co.,Ltd. Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |
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Inventor after: Guan Xiaobo Inventor after: Gong Ni Inventor after: Menshuhui Inventor after: Xu Xuelian Inventor after: Jiang Zhenliang Inventor after: Liu Xiaoqiang Inventor after: War Yi Inventor before: Yu Mingxia Inventor before: Jiang Zhenliang Inventor before: Li Jie |
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Effective date of registration: 20160307 Address after: 264000 No. 11 middle Wolong Road, Shandong, Yantai Applicant after: YANTAI JINRUN FIRE ENGINEERING Co.,Ltd. Applicant after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Address before: 264000 No. 11 middle Wolong Road, Shandong, Yantai Applicant before: YANTAI JINRUN FIRE ENGINEERING Co.,Ltd. |
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Application publication date: 20150923 |