CN104830068A - High-hardness silicone rubber material used in special printing industry and preparation method of same - Google Patents
High-hardness silicone rubber material used in special printing industry and preparation method of same Download PDFInfo
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- CN104830068A CN104830068A CN201510070502.6A CN201510070502A CN104830068A CN 104830068 A CN104830068 A CN 104830068A CN 201510070502 A CN201510070502 A CN 201510070502A CN 104830068 A CN104830068 A CN 104830068A
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Abstract
The invention relates to silicone rubber processing and producing and particularly relates to a high-hardness silicone rubber material used in special printing industry and a preparation method of same. The high-hardness silicone rubber material is composed of an A rubber component and a B rubber component, wherein the A rubber component includes, by weight, 100 parts of basic rubber, 0.1-0.5 parts of a platinum catalyst and 0.1-0.5 parts of an inhibitor, and the B rubber component includes, by weight, 100 parts of the basic rubber and 0.5-10 parts of hydrogen-containing silicone oil; wherein the basic rubber comprises, by weight: 100 parts of vinyl methyl polysiloxane, 10-50 parts of fumed silica and 10-50 parts of silicon nano sheets. The silicone rubber material is high in hardness, is high in tear strength, is good in processability and is suitable for the special printing industry.
Description
Technical field
The present invention relates to silicon rubber processing and production field, be specifically related to a kind of high hardness silicone rubber material for specialty printing industry and preparation method thereof.
Background technology
Along with the needs of publishing industry and market development, common printing technology can not meet the needs of some special industries, specialty printing technology is arisen at the historic moment, specialty printing technology is different from traditional plate-making, printing, post-press finishing method and material produce, the printable fabric that general use is special, as surface of undertaking the printing of, forming composition, ink etc., special printing process is adopted to print.Tradition thermoprint adopts copper, photo zincography etc., owing to carrying out plane thermoprint, can not meet the demand of industry development; Therefore, a kind of energy high temperature resistant (200 DEG C) can be provided in the urgent need to market, there is good compression resilience, shore a hardness higher (generally between 60-90), be easy to the elastomerics processed.
Addition type room temperature vulcanized silicone rubber at room temperature gets final product sulfidization molding, there is good thermotolerance (can-60 ~ 250 DEG C of long term operations), there is excellent electrical insulation properties and chemical stability, there is lower surface energy, can be water-fast, resistance to ozone, weather-resistant, good mechanical performance, hardness is adjustable, is widely used in industries such as aerospace, war industry, telecommunications, electrical apparatus industry, building sealings.The silicon rubber one provided in the market take white carbon black as supporting material, and Shore A hardness is also general between 40 ~ 60, relatively low, can not meet the demand of specialty printing industry.Recently, also have some to report, by adding excessive white carbon black or metal oxide carries out reinforcement, although also can obtain certain hardness, its mechanical properties decrease is very fast, and the settlement issues of metal oxide can not be well solved simultaneously.A kind of high rigidity melting silicone rubber composition is disclosed and preparation technology: a. adds silicone oil, vinyltriethoxysilane, white carbon black, diatomite in methyl vinyl silicon kautschuk as Chinese patent CN102888117A, evenly mixing in kneader, at 160 DEG C, continue mixing 2 hours, be made into sizing material; B. sizing material is mixed on twin-screw extruder with ditertiary butyl peroxide, 160 DEG C, sulfuration 10 minutes under 30M Pa condition, then in 200 DEG C of baking ovens post cure 4h.The soft melting silicone rubber performance prepared by this inventive composition is good, and preparation technology is simple, and shortcoming is that your the A hardness that continues of finished product is about 60.Strengthening the army peak etc. in [elastomerics, 2005,15 (3): 28-33], based on Wacker R401/70S, obtaining the silicon rubber of high rigidity by adding aerosil or aluminum oxide.Although obtain by adding the silicon rubber that aerosil and aluminum oxide can be 70 by shore a hardness the silicon rubber that shore a hardness is 90, now amount of filler is excessive, and mechanical property is also decreased significantly.
Summary of the invention
In order to solve the problems referred to above of existing at present and improve current deficiency, provide a kind of high hardness silicone rubber material for specialty printing industry and preparation method thereof.Be characterized in that this silicon rubber has higher shore a hardness, and can regulate voluntarily within the specific limits that there is excellent weather-proof, high temperature resistant and flow characteristics simultaneously, and Environmental Safety, easy handling, is applicable to specialty printing industry.
In order to reach foregoing invention object, the present invention by the following technical solutions:
For a high hardness silicone rubber material for specialty printing industry, described high hardness silicone rubber material is made up of component A glue and B component glue, and described component A glue is counted by weight and comprised: 100 parts of base glue, 0.1-0.5 part platinum catalyst and 0.1-0.5 part inhibitor; Described B component glue is counted by weight and is comprised: 100 parts of base glue and 0.5-10 part containing hydrogen silicone oil; Described base glue is counted by weight and is comprised: 100 parts of vinyl methyl polysiloxane, 10-50 part thermal silica and 10-50 part silicon nanometer sheet.
The preparation method of silicon nanometer sheet: calcium silicide is hydrolyzed in concentrated hydrochloric acid, through being separated deacidification, ethanol is washed, dry.
Preferably, described inhibitor is 2-methyl-3-butynyl-2 alcohol, 3-methyl isophthalic acid-hexin base-3-alcohol, 1-ethynylcyclohexanol or methyl three (methyl butyne oxygen base) silane.
Preferably, the platinum catalyst used is Karst catalyzer, and the effective content of platinum is 3000-10000ppm.Karst catalyzer is Platinic chloride-divinyl tetramethyl disiloxane complex compound.
Preferably, described Silicon Containing Hydrogen oil viscosity is 200-1000mPas, and the mass percentage of hydrogen is 0.02-1.0%.
Preferably, the viscosity of described vinyl methyl polysiloxane is 1000-10000mPas, and the mass percentage of vinyl is 0.1-1%.
For an its preparation method for the high hardness silicone rubber material of specialty printing industry, comprise the following steps:
(1) preparation of base glue: by 100 parts of vinyl methyl polysiloxane, 10-50 part thermal silica, 10-50 part silicon nanometer sheet, add (vacuum tightness 0.05-0.1MPa) in vacuum kneader to mediate evenly, be warming up to 100-150 DEG C, stir and mediate 50-200 minute, obtain base glue;
(2) preparation method of component A is: under normal temperature and pressure, gets 100 parts of base glue, adds 0.1-0.5 part platinum catalyst in proportion, and 0.1-0.5 part inhibitor, stirs, and obtains component A glue;
(3) preparation method of B component is: under normal temperature and pressure, gets 100 parts of base glue, adds 0.5-10 part containing hydrogen silicone oil in proportion, stirs, obtain B component glue;
(4), after 1:1 mixes solidification in mass ratio by component A glue and B component glue, described high hardness silicone rubber material is obtained.
Compared with prior art, beneficial effect is in the present invention: the hardness of high hardness silicone rubber of the present invention is high, and tear strength is large, and processibility is good, is applicable to specialty printing industry.
Embodiment
Below by specific embodiment, explanation is further described to technical scheme of the present invention.
If without specified otherwise, the raw material adopted in embodiments of the invention is the conventional raw material in this area, and the method adopted in embodiment, is the ordinary method of this area.
Optical clear block silicone resin in following embodiment is the block optical clear condensed type organic silicon resin containing ladder-like polysiloxane.
Embodiment 1
The preparation of base glue: the vinyl polysiloxane (contents of ethylene 0.1%) by 100 kilograms of viscosity being 1000mPas, 40 kilograms of thermal silicas, 10 kilograms of silicon nanometer sheet, add in 1000 liters of vacuum kneaders (vacuum tightness 0.1MPa) and mediate evenly, be warming up to 100 DEG C, stir kneading 150 minutes, obtain base glue.
The preparation method of component A glue: under normal temperature and pressure, gets 100 kilograms of base glue, and the effective content adding 0.1 kilogram of platinum is in proportion the catalyzer of 3000ppm, and 0.1 kilogram of inhibitor 2-methyl-3-butynyl-2 alcohol, stirs, obtain component A glue;
The preparation method of B component glue: under normal temperature and pressure, gets 100 kilograms of base glue, and adding 10 kilograms of viscosity is in proportion 200mPas, and the mass percentage of hydrogen is the containing hydrogen silicone oil of 1.0%, stirs, and obtains B component glue;
At ambient temperature, by A, B component glue in mass ratio 1:1 mix, can obtain obtain high hardness silicone rubber.
Embodiment 2
The preparation of base glue: the vinyl polysiloxane (contents of ethylene 0.5) by 100 kilograms of viscosity being 10000mPas, 10 kilograms of thermal silicas, 50 kilograms of silicon nanometer sheet, add in 1000 liters of vacuum kneaders and mediate evenly, be warming up to 150 DEG C, vacuum tightness 0.05MPa, stirs kneading and obtains base glue after 50 minutes.
The preparation method of component A glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and the effective content adding 0.2 kilogram of platinum is in proportion the catalyzer of 10000ppm, and 0.5 kilogram of inhibitor 3-methyl isophthalic acid-hexin base-3-alcohol, stirs, obtain component A glue;
The preparation method of B component glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and to add 10 kilograms of viscosity be in proportion the mass percentage of 1000mPas hydrogen is the containing hydrogen silicone oil of 0.02%, stirs, obtains B component glue;
At ambient temperature, by A, B component glue in mass ratio 1:1 mix, can high hardness silicone rubber be obtained.
Embodiment 3
The preparation of base glue: the vinyl polysiloxane (contents of ethylene 1%) by 100 kilograms of viscosity being 5000mPas, 50 kilograms of thermal silicas, 30 kilograms of silicon nanometer sheet, add in 1000 liters of vacuum kneaders (vacuum tightness 0.08MPa) and mediate evenly, be warming up to 120 DEG C, stir kneading 200 minutes, obtain base glue.
The preparation method of component A glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and the effective content adding 0.5 kilogram of platinum is in proportion the catalyzer of 3000ppm, and 0.3 kilogram of inhibitor 1-ethynylcyclohexanol, stirs, obtain component A glue;
The preparation method of B component glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and to add 10 kilograms of viscosity be in proportion the mass percentage of 500mPas hydrogen is the containing hydrogen silicone oil of 0.05%, stirs, obtains B component glue;
At ambient temperature, by A, B component glue in mass ratio 1:1 mix, can high hardness silicone rubber be obtained.
Embodiment 4
The preparation of base glue: the vinyl polysiloxane (contents of ethylene 0.6%) by 100 kilograms of viscosity being 8000mPas, 30 kilograms of thermal silicas, silicon nanometer sheet 40 kilograms, add in 1000 liters of vacuum kneaders and mediate evenly, be warming up to 100 DEG C, vacuum tightness 0.09MPa, stirs kneading and obtains base glue after 100 minutes.
The preparation method of component A glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and the effective content adding 0.1 kilogram of platinum is in proportion the catalyzer of 10000ppm, and 0.4 kilogram of inhibitor methyl three (methyl butyne oxygen base) silane, stirs, obtain component A glue;
The preparation method of B component glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and adding 10 kilograms of viscosity is in proportion 800mPas, and the mass percentage of hydrogen is the containing hydrogen silicone oil of 0.7%, stirs, and obtains B component glue;
At ambient temperature, by A, B component glue in mass ratio 1:1 mix, can high hardness silicone rubber be obtained.
Embodiment 5
The preparation of base glue: the vinyl polysiloxane (contents of ethylene 0.4%) by 100 kilograms of viscosity being 3000mPas, 40 kilograms of thermal silicas, silicon nanometer sheet, add 1000 liters of vacuum kneaders (vacuum tightness 0.08MPa), after middle kneading evenly, be warming up to 130 DEG C, stir kneading 180 minutes, obtain base glue.
The preparation method of component A glue: under normal temperature and pressure, get 100 kilograms of base glue, the effective content adding 0.1 kilogram of platinum is in proportion the catalyzer of 3000ppm, inhibitor 2-methyl-3-butynyl-2 alcohol 0.1 kilogram and 3-methyl isophthalic acid-hexin base-3-alcohol 0.1 kilogram, stir, obtain component A glue;
The preparation method of B component glue is: under normal temperature and pressure, gets 100 kilograms of base glue, and adding 10 kilograms of viscosity is in proportion 200mPas, and the mass percentage of hydrogen is the containing hydrogen silicone oil of 1.0%, stirs, and obtains B component glue;
At ambient temperature, by A, B component glue in mass ratio 1:1 mix and can obtain high hardness silicone rubber.
By high hardness silicone rubber obtained above, according to GB-T528 test tensile strength and elongation at break; Tear strength is tested according to GB-T529; Shore hardness is tested according to GB-T531.Table 1 is the performance test results of each embodiment test.
Table 1
| Embodiment | Surface drying time (h) | Set time (h) | Hardness (shore) | Tensile strength (MPa) | Tear strength (KN/m) | Elongation at break (%) |
| 1 | 1.5 | 24 | 70 | 4.8 | 14 | 280 |
| 2 | 2 | 24 | 90 | 5.2 | 15 | 220 |
| 3 | 2 | 24 | 86 | 5.5 | 13 | 300 |
| 4 | 2.5 | 24 | 78 | 6.2 | 15 | 280 |
| 5 | 2 | 24 | 84 | 5.6 | 14 | 260 |
Claims (6)
1. the high hardness silicone rubber material for specialty printing industry, it is characterized in that, described high hardness silicone rubber material is made up of component A glue and B component glue, and described component A glue is counted by weight and comprised: 100 parts of base glue, 0.1-0.5 part platinum catalyst and 0.1-0.5 part inhibitor; Described B component glue is counted by weight and is comprised: 100 parts of base glue and 0.5-10 part containing hydrogen silicone oil; Described base glue is counted by weight and is comprised: 100 parts of vinyl methyl polysiloxane, 10-50 part thermal silica and 10-50 part silicon nanometer sheet.
2. a kind of high hardness silicone rubber material for specialty printing industry according to claim 1, it is characterized in that, described inhibitor is 2-methyl-3-butynyl-2 alcohol, 3-methyl isophthalic acid-hexin base-3-alcohol, 1-ethynylcyclohexanol or methyl three (methyl butyne oxygen base) silane.
3. a kind of high hardness silicone rubber material for specialty printing industry according to claim 1, is characterized in that, the platinum catalyst used is Karst catalyzer, and the effective content of platinum is 3000-10000ppm.
4. a kind of high hardness silicone rubber material for specialty printing industry according to claim 1, it is characterized in that, described Silicon Containing Hydrogen oil viscosity is 200-1000mPas, and the mass percentage of hydrogen is 0.02-1.0%.
5. a kind of high hardness silicone rubber material for specialty printing industry according to claim 1, is characterized in that, the viscosity of described vinyl methyl polysiloxane is 1000-10000mPas, and the mass percentage of vinyl is 0.1-1%.
6., for an its preparation method for the high hardness silicone rubber material of specialty printing industry, it is characterized in that, comprise the following steps:
(1) preparation of base glue: by 100 parts of vinyl methyl polysiloxane, 10-50 part thermal silica, 10-50 part silicon nanometer sheet, add (vacuum tightness 0.05-0.1MPa) in vacuum kneader to mediate evenly, be warming up to 100-150 DEG C, stir and mediate 50-200 minute, obtain base glue;
(2) preparation method of component A is: under normal temperature and pressure, gets 100 parts of base glue, adds 0.1-0.5 part platinum catalyst in proportion, and 0.1-0.5 part inhibitor, stirs, and obtains component A glue;
(3) preparation method of B component is: under normal temperature and pressure, gets 100 parts of base glue, adds 0.5-10 part containing hydrogen silicone oil in proportion, stirs, obtain B component glue;
(4), after 1:1 mixes solidification in mass ratio by component A glue and B component glue, described high hardness silicone rubber material is obtained.
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Cited By (2)
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| CN113413916A (en) * | 2021-05-18 | 2021-09-21 | 杭州师范大学 | Silicon-based substituted triphenyl phosphite coordination platinum catalyst, preparation method thereof and organic silicon impregnating varnish |
| CN115926472A (en) * | 2022-12-18 | 2023-04-07 | 新安天玉有机硅有限公司 | High-hardness high-performance liquid silicone rubber and preparation method thereof |
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Effective date of registration: 20230106 Address after: 311121 F215, No. 1378, Wenyi West Road, Cangqian Street, Yuhang District, Hangzhou, Zhejiang Patentee after: Hangzhou Fusite Technology Co.,Ltd. Address before: 310036 No. 16 Xuelin Road, Xiasha Economic Development Zone, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Normal University |