CN103205234A - Low-viscosity neutral organic silicone and application thereof - Google Patents
Low-viscosity neutral organic silicone and application thereof Download PDFInfo
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- CN103205234A CN103205234A CN2013100838175A CN201310083817A CN103205234A CN 103205234 A CN103205234 A CN 103205234A CN 2013100838175 A CN2013100838175 A CN 2013100838175A CN 201310083817 A CN201310083817 A CN 201310083817A CN 103205234 A CN103205234 A CN 103205234A
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Abstract
The invention relates to low-viscosity neutral organic silicone and an application of thereof. Raw materials for preparing the organic silicone includes, by weight, 100 parts of polydimethylsiloxane of hydroxyl end, 20-50 parts of plasticizer, 5-10 parts of cross-linking agent, 0.5-2 parts of catalyst and 5-7 parts of film enchanter. The low-viscosity neutral organic silicone is fast in setting time and strong in viscosity; and stripping performance of the low-viscosity neutral organic silicone is significantly improved by above 5N/mm.
Description
Technical field
The present invention relates to the neutral organic silica gel of a kind of low viscosity and application thereof.
Background technology
Sense stricto coating glue refers to be applied in early days shield after the surperficial coating of various function electronic products PCB circuit cards, glass, metal and various plastics, and coating material surface later should have protection against the tide, insulation, function such as dustproof, anticorona.In today of electronic technology high speed development; electronics, electric equipment products have been deep into each corner of life, and sensu lato coating glue is used the coating protection of having widened to being widely used in electronic devices and components, electrical appliance module, wiring board, electricbulb outside surface coating protection and electroplating preceding electroless plating position.
In recent years, organic silica gel is owing to have good high and low temperature resistance, and the excellent electric insulating energy has developed into the main type of electron device coating glue.Organosilicon coating glue is generally the single-component packing, is abutted against during use and touches the curing of water in air part, does not once use up and should in time build in order to using next time again.Adopt methods such as brushing, spraying, dip-coating during construction, coating with do not flow divinatory symbol, holiday is not limited.One time coating thickness generally is advisable between 0.1-0.2mm.Coating glue must will desire to be coated with moisture content and the greasy dirt Ex-all of article surface earlier before the construction application.Filming behind the surface drying in first road, can be coated with second time.The hairbrush that uses up, spray gun etc. should in time be cleaned, in order to using next time again.Note during construction ventilating, in order to solvent evaporates wherein, guarantee safety.
Most of organosilicon coating glue on the market at present, performance is very different, exists all usually that curing speed is slow, adhesiveproperties is low, and especially all shortcomings such as tear resistance difference have seriously limited the extensive application of organosilicon coating glue.
Therefore, coating glue is coated with after the adhesive curing, investigates adhesive power and the toughness of glued membrane, and test adhesive power and stripping performance have become the main means of estimating coating colloidality energy.
Summary of the invention
Technical problem to be solved by this invention provides the neutral organic silica gel of a kind of low viscosity and application thereof, the invention provides a kind of temperature heating that do not rely on, namely curable under the conventional criteria room temperature environment, in the certain hour, can reach the organosilicon coating glue of needed every performance, solve the coating film that exists in the existing coating glue use and easily torn the not enough problem of snappiness.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: the neutral organic silica gel of a kind of low viscosity, described organic silica gel is made up of each raw material of following parts by weight: 100 parts of hydroxy-end capped polydimethylsiloxanes, 20～50 parts in softening agent, 5～10 parts of linking agents, 0.5～2 part of catalyzer, 5～7 parts of glued membrane tougheners.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described hydroxy-end capped polydimethylsiloxane is that viscosity is one or more the mixture in the polysiloxane of 1000～6000mPa.s.
Further, described softening agent is dimethyl silicone oil or phenyl silicone oil, and the viscosity of described softening agent is 50～200mPa.s.
Further, described linking agent is one or more the mixture in methyl three isopropoxy silane, vinyl silane triisopropoxide, the phenyl three isopropoxy silane.
Further, described catalyzer is organic guanidine catalyst.
Further, described glued membrane toughener is made up of silicone resin and deodorization straight chain aliphatic solvents oil, described silicone resin quality account for silicone resin and deodorization straight chain aliphatic solvents oil gross weight 10%～30%, preferred 20%.
Further, described deodorization straight chain aliphatic solvents oil is that high mountain ocean, Maoming company produces and commercially available molten Ji oil for normal heptane, D20(), high mountain ocean, D40(Maoming company produces and commercially available molten Ji oil) in one or more mixture, described silicone resin is MQ type silicone resin, and molar mass is 3000～6000.
Further, described deodorization straight chain aliphatic solvents oil is preferably normal heptane;
The beneficial effect that adopts above-mentioned further scheme is to take off on the basis of acetone type linking agent in use, by the cooperation of glued membrane toughener and linking agent, makes the tear resistance of cured glue film obviously improve, and stripping strength can reach more than the 5N/mm.
The present invention also provides the application of the coating at the neutral organic silica gel of a kind of low viscosity electroless plating position before electronic devices and components, electrical appliance module, wiring board, electricbulb outside surface apply protection and electroplate in protecting.
The present invention also provides the preparation method of the neutral organic silica gel of a kind of low viscosity: will take by weighing 100 parts of hydroxy-end capped polydimethylsiloxanes, 20～50 parts in softening agent, 5～10 parts of linking agents, 0.5～2 part of catalyzer, 5～7 parts of glued membrane tougheners, add successively in the stirrer and mix, be evacuated to less than-0.098Mpa, mixed N 1～2 hour
2Preservation and packaging gets final product.
The invention has the beneficial effects as follows:
The invention provides the neutral organic silica gel of a low viscosity, single-component package, be easy to spraying, dip-coating, fast curing, cured glue film tool high-low temperature resistant, ageing-resistant, pliable and tough, insulation, protection against the tide, antidetonation, anti-corona, anti-electric leakage, cold-and-heat resistent change characteristics such as good, than the general better tear strength of neutral silica gel tool and bonding strength.Be widely used in various electronic devices and components, IC chip, assemble in the wiring board that finishes; protective wire network plate uses in severe environment such as various chemical burn into salt fogs, humidity, the many dusts of high pollution, vibrations and high low temperature and can not influence its work and signal fully, belongs to a main type of coating glue.
Embodiment
Below principle of the present invention and feature are described, institute only gives an actual example and to be used for explaining the present invention, is not for restriction scope of the present invention.
Embodiment 1
Accurately take by weighing following various raw material, 1000mPa.s 100 parts of hydroxy-end capped polydimethylsiloxanes, 20 parts of 200mPa.s dimethyl silicone oils, 6 parts of vinyl silane triisopropoxides, 1 part of (tetramethyl-guanidine radicals) propyl trimethoxy silicane, glued membrane toughener 7 parts of (80 parts of normal heptanes, 20 parts of MQ silicone resin (molecular weight 6000), mix 2 hours under the room temperature to even), add above-mentioned each component in the mixing and blending machine successively, be evacuated to-0.1MPa, mix 1 hour to even, N
2Preservation and packaging is placed stand-by.
Embodiment 2
Accurately take by weighing following various raw material, 1500mPa.s 100 parts of hydroxy-end capped polydimethylsiloxanes, 20 parts of 100mPa.s dimethyl silicone oils, 6 parts in methyl three isopropoxy silane, 1 part of (tetramethyl-guanidine radicals) propyl trimethoxy silicane, glued membrane toughener 5 parts of (60 parts of normal heptanes, 20 parts of the molten Ji oil of D20,20 parts of MQ silicone resin (molecular weight 3000), mix 2 hours under the room temperature to even), add above-mentioned each component in the mixing and blending machine successively, be evacuated to-0.1MPa, mix 1.5 hours to even, N
2Preservation and packaging is placed stand-by.
Embodiment 3
Accurately take by weighing following various raw material, 6000mPa.s 100 parts of hydroxy-end capped polydimethylsiloxanes, 50 parts of 50mPa.s dimethyl silicone oils, 6 parts of vinyl silane triisopropoxides, 2 parts of (tetramethyl-guanidine radicals) propyl trimethoxy silicanes, glued membrane toughener 5 parts of (60 parts of normal heptanes, 20 parts of the molten Ji oil of D40,20 parts of MQ silicone resin (molecular weight 3000), mix 2 hours under the room temperature to even), add above-mentioned each component in the mixing and blending machine successively, be evacuated to-0.1MPa, mix 2 hours to even, N
2Preservation and packaging is placed stand-by.
Embodiment 4
Accurately take by weighing following various raw material, 6000mPa.s 100 parts of hydroxy-end capped polydimethylsiloxanes, 40 parts of 100mPa.s phenyl silicone oil, 8 parts in phenyl three isopropoxy silane, 0.5 part of (tetramethyl-guanidine radicals) propyl trimethoxy silicane, glued membrane toughener 6 parts of (60 parts of normal heptanes, 10 parts of the molten Ji oil of D20,10 parts of the molten Ji oil of D40,20 parts of MQ silicone resin (molecular weight 5000), mix 2 hours under the room temperature to even), add above-mentioned each component in the mixing and blending machine successively, be evacuated to-0.1MPa, mix 1 hour to even, N
2Preservation and packaging is placed stand-by.
Embodiment 5
Accurately take by weighing following various raw material, 1500mPa.s 100 parts of hydroxy-end capped polydimethylsiloxanes, 20 parts of 200mPa.s phenyl silicone oil, 3 parts of vinyl silane triisopropoxides, 3 parts in phenyl three isopropoxy silane, 1.5 parts of (tetramethyl-guanidine radicals) propyl trimethoxy silicanes, glued membrane toughener 7 parts of (60 parts of normal heptanes, 20 parts of the molten Ji oil of D40,20 parts of MQ silicone resin (molecular weight 5000), mix 2 hours under the room temperature to even), add above-mentioned each component in the mixing and blending machine successively, be evacuated to-0.1MPa, mix 2 hours to even, N
2Preservation and packaging is placed stand-by.
Embodiment 1 to 5 is done performance test, and performance data is all at 25 ℃, and relative humidity 55% solidifies that the data of surveying specifically see the following form 1 after 7 days.Stripping strength is tested according to GB GB-T7122-1996, and tensile strength is tested according to GB GB1040.1-2006, and the shearing resistance test is carried out according to GB GB/T7124-2008, and aluminium flake is selected in test piece.Data presentation, coating of the present invention contrasts with widely used MY3495/3496 like product (the bright electronics technology forever in Dongguan company limited product type) on low viscosity organic silica gel and the domestic market, the stripping strength of cured glue film is significantly improved, and has improved the tear resistance of coating glued membrane.
Table 1 test result
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the neutral organic silica gel of a low viscosity, it is characterized in that described organic silica gel is made up of each raw material of following parts by weight: 100 parts of hydroxy-end capped polydimethylsiloxanes, 20～50 parts in softening agent, 5～10 parts of linking agents, 0.5～2 part of catalyzer, 5～7 parts of glued membrane tougheners.
2. the neutral organic silica gel of low viscosity according to claim 1 is characterized in that, described hydroxy-end capped polydimethylsiloxane is that viscosity is one or more the mixture in the polysiloxane of 1000～6000mPa.s.
3. the neutral organic silica gel of low viscosity according to claim 1 is characterized in that described softening agent is dimethyl silicone oil or phenyl silicone oil, and the viscosity of described softening agent is 50～200mPa.s.
4. the neutral organic silica gel of low viscosity according to claim 1 is characterized in that, described linking agent is one or more the mixture in methyl three isopropoxy silane, vinyl silane triisopropoxide, the phenyl three isopropoxy silane.
5. the neutral organic silica gel of low viscosity according to claim 1 is characterized in that described catalyzer is organic guanidine catalyst.
6. the neutral organic silica gel of low viscosity according to claim 1, it is characterized in that, described glued membrane toughener is made up of silicone resin and deodorization straight chain aliphatic solvents oil, described silicone resin quality account for silicone resin and deodorization straight chain aliphatic solvents oil gross weight 10%～30%.
7. the neutral organic silica gel of low viscosity according to claim 6, it is characterized in that, described deodorization straight chain aliphatic solvents oil is one or more the mixture among normal heptane, D20, the D40, and described silicone resin is MQ type silicone resin, and molar mass is 3000～6000.
8. the application in the coating protection at the neutral organic silica gel of low viscosity electroless plating position before electronic devices and components, electrical appliance module, wiring board, electricbulb outside surface apply protection and electroplate.
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Cited By (6)
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| CN103666250A (en) * | 2013-12-13 | 2014-03-26 | 烟台德邦科技有限公司 | Organic silicon coating rubber and preparation method thereof |
| CN105968359A (en) * | 2016-06-08 | 2016-09-28 | 成都大蓉新材料有限责任公司 | Hydroxyl resin for organic silicon-coated material and preparation method of hydroxyl resin |
| CN106010237A (en) * | 2016-06-08 | 2016-10-12 | 成都大蓉新材料有限责任公司 | Organosilicone coating material and preparation method thereof |
| CN109943245A (en) * | 2019-04-04 | 2019-06-28 | 河北超达密封制品有限公司 | A kind of glass-fiber reinforced silicone band and preparation method thereof |
| CN110527428A (en) * | 2019-08-26 | 2019-12-03 | 广东药科大学 | A kind of plated film protection oil and its application method |
| CN110724462A (en) * | 2019-10-16 | 2020-01-24 | 烟台德邦科技有限公司 | High-surface-dryness ultraviolet curing coating adhesive and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103666250A (en) * | 2013-12-13 | 2014-03-26 | 烟台德邦科技有限公司 | Organic silicon coating rubber and preparation method thereof |
| CN105968359A (en) * | 2016-06-08 | 2016-09-28 | 成都大蓉新材料有限责任公司 | Hydroxyl resin for organic silicon-coated material and preparation method of hydroxyl resin |
| CN106010237A (en) * | 2016-06-08 | 2016-10-12 | 成都大蓉新材料有限责任公司 | Organosilicone coating material and preparation method thereof |
| CN109943245A (en) * | 2019-04-04 | 2019-06-28 | 河北超达密封制品有限公司 | A kind of glass-fiber reinforced silicone band and preparation method thereof |
| CN110527428A (en) * | 2019-08-26 | 2019-12-03 | 广东药科大学 | A kind of plated film protection oil and its application method |
| CN110527428B (en) * | 2019-08-26 | 2022-01-25 | 广东药科大学 | Coating protection oil and use method thereof |
| CN110724462A (en) * | 2019-10-16 | 2020-01-24 | 烟台德邦科技有限公司 | High-surface-dryness ultraviolet curing coating adhesive and preparation method thereof |
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| CN103205234B (en) | 2014-04-16 |
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Application publication date: 20130717 Assignee: WEISHIDA SEMICONDUCTOR TECHNOLOGY (ZHANGJIAGANG) CO., LTD. Assignor: Yantai Darbond Technology Co., Ltd. Contract record no.: 2014990000766 Denomination of invention: Low-viscosity neutral organic silicone and application thereof Granted publication date: 20140416 License type: Exclusive License Record date: 20140924 |
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Address after: No.3-3, Kaifeng Road, Yantai Economic and Technological Development Zone, Shandong Province 264006 Patentee after: Yantai Debang Technology Co.,Ltd. Address before: 264006 No. 98 Jinshajiang Road, Yantai Development Zone, Yantai City, Shandong Province Patentee before: DARBOND TECHNOLOGY Co.,Ltd. |
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