CN105315676A - Medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and preparation method thereof - Google Patents
Medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and preparation method thereof Download PDFInfo
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- CN105315676A CN105315676A CN201510694780.9A CN201510694780A CN105315676A CN 105315676 A CN105315676 A CN 105315676A CN 201510694780 A CN201510694780 A CN 201510694780A CN 105315676 A CN105315676 A CN 105315676A
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Abstract
The invention provides a medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and a preparation method thereof. The rubber plug comprises auxiliary silicone, polyvinyl acetate latex and a mixed solution. The preparation method comprises the following steps: separately adding the mixed solution to the auxiliary silicone and the polyvinyl acetate latex according to the ratio of 1:1.36, stirring for 10 minutes, taking 20% of mixed rubber comprising the polyvinyl acetate latex and the mixed solution to be mixed with the auxiliary silicone, stirring, adding the remaining 80% of the mixed rubber comprising the polyvinyl acetate latex and the mixed solution after 3 minutes, and continuously stirring for 2 minutes to obtain a colloid; cooling the colloid in air at the temperature of 15 DEG C for 1 day, and slicing to obtain the medical silicone rubber product, namely the rubber plug. The product prepared by the method is higher in chemical stability, free of irritation, high in safety, heat-proof and ageing-resistant, has an excellent mechanical property, and has certain medicine components compared with a common silicone rubber plug when being used as a medicinal liquid bottle plug; when the certain medicine components are combined with normal saline, components which are beneficial to a human body are volatilized, so that a medicinal liquid is prevented from being mixed with toxic components, and safety and benefits are guaranteed.
Description
Technical field:
The present invention relates to medical grade rubber processing technique field, be specifically related to a kind of medical grade silicon rubber-polyvinyl acetate copolymerization plug and preparation method thereof.
Background technology:
Along with the development of society, the rubber item kind being applied to medicine and hygiene fields gets more and more, as various flask for medicinal preparations plug, asepsis injector piston, injection sealant sealing, flexible pipe, conduit, medical air cushion, antiseptic rubber medical gloves, baby nipple, tube for blood transfusion,latex etc.Desirable druggist rubber sundries not only needs to have good physicals, also must ensure nontoxic and have unreactiveness, particularly in body rubber item should have not pathogenic, do not damage adjacent tissue, do not cause the features such as allergy, aging resistance are good.
Traditional druggist rubber sundries is under high temperature, condition of high voltage, and its vulcanization system easily produces and pollutes human body, the exudate of medicament, volatile matter, thus is difficult to prepare the druggist rubber sundries meeting medicine extra best best standard.Existing druggist rubber sundries and preparation method thereof, its complex technical process, the product feature of environmental protection is poor, and safety in utilization is not strong, and work-ing life is lower.
Summary of the invention:
Technical problem to be solved by this invention is to provide that a kind of technique is simple, the medical grade silicon rubber-polyvinyl acetate copolymerization plug of safety and environmental protection, long service life and preparation method thereof.
Technical problem to be solved by this invention adopts following technical scheme to realize:
A kind of medical grade silicon rubber-polyvinyl acetate copolymerization plug, is characterized in that, be made up of the raw material of following mass fraction:
Comprise auxiliary silica gel, polyvinyl acetate and mixed solution;
Wherein: auxiliary silica gel comprises: methyl vinyl silicone rubber 80-100 part, polypropylene 10-15 part, sodium starch glycolate 8-12 part, gelatin 5-8 part, octamethylcyclotetrasilazane 4-8 part, dioctyl phthalate (DOP) 2-5 part, lactic acid 3-7 part, containing hydrogen silicone oil 2-5 part, Vulcanization accelerator TMTD 1-4 part, dicumyl peroxide 1-2.5 part, zinc oxide 3-5 part, stearic acid 1-3 part, Microcrystalline Wax 0.5-1.5 part, white carbon black 1-2 part, oxidation inhibitor 2-5 part;
Polyvinyl acetate comprises: polyvinyl alcohol: 15-20 part, distilled water: 130-150 part, pelopon A: 2-5 part, OP-10:1-3 part, Potassium Persulphate: 1-2 part, vinyl acetate between to for plastic: 160-180 part, dibutyl phthalate: 1-2 part, hydrochloric acid: 1-3 part, 37% formalin: 3-5 part, open-chain crown ether: 8-10 part, essence: 1-2 part, 40% caustic-soda aqueous solution: 1-2 part;
Mixed solution comprises: ginseng 5-10 part, bighead atractylodes rhizome 5-10 part, raw rice sprout 5-10 part, water 50-60 part, Fructus Crataegi (parched to brown) 5-10 part, Divine Comedy 5-10 part, radix polygonati officinalis 5-7 part, Rhizoma Arisaematis 9-12 part, calamus 15-18 part, wood chip 15-18 part, bean curd water 100-120 part.
Described dioctyl phthalate (DOP) is medical grade.
Described oxidation inhibitor is made up of antioxidant 1010 and antioxidant 1076, and ratio is between the two 1:1.
A preparation method for medical grade silicon rubber-polyvinyl acetate copolymerization plug, is characterized in that, comprise the following steps:
(1) first methyl vinyl silicone rubber, polypropylene are joined rubber mixing machine bag roller, then sodium starch glycolate, gelatin, octamethylcyclotetrasilazane, dioctyl phthalate (DOP), lactic acid, Vulcanization accelerator TMTD, dicumyl peroxide, zinc oxide is added, thin-pass 5 times, bottom sheet, heat-treats;
(2) by the back mixing on rubber mixing machine of the sizing material after thermal treatment, namely clot, bottom sheet obtain rubber unvulcanizate;
(3) in rubber unvulcanizate, add containing hydrogen silicone oil, oxidation inhibitor, stearic acid, Microcrystalline Wax, white carbon black, fully after mixing, blank, obtains auxiliary silica gel, stand-by;
(4) polyvinyl alcohol, OP-10, pelopon A, Potassium Persulphate are added in agitator, stir 10 minutes, obtain being uniformly mixed solution;
(5) pour in stirred pot by distilled water, heat, temperature controls at 60-70 DEG C, 10-20 minute, to water be uniformly mixed solution and dissolve completely;
(6) again heat, temperature controls at 70-80 DEG C, heats 30 minutes;
(7) add vinyl acetate between to for plastic, maintain reaction 4 hours of heating, obtain polyvinyl acetate emulsion;
(8) add open-chain crown ether, get 40% caustic-soda aqueous solution to regulate pH value, pH value is controlled at 4-7;
(9) add the formalin of 37% again, obtain work in-process;
(10) finally dibutyl phthalate and essence are added in work in-process, be uniformly mixed and obtain polyvinyl acetate, stand-by;
(11) get ginseng, the bighead atractylodes rhizome, raw rice sprout, pulverize, mixing water, is sprayed on Fructus Crataegi (parched to brown), until Fructus Crataegi (parched to brown) moisture content higher than 50% time, take out Fructus Crataegi (parched to brown) and be placed in sealed can 1-2 hour;
(12) will spray remaining liquid again, wood chip, Divine Comedy, radix polygonati officinalis, Rhizoma Arisaematis smash into powder to pieces with calamus, pour in liquid, stir, take out Fructus Crataegi (parched to brown) simultaneously and be placed in liquid, seal 1 hour, then under being placed in the sun, be exposed to the sun to the complete evaporate to dryness of liquid, take out remaining powder agglomates, smash to pieces, sieve, mix with bean curd water, obtain mixed solution;
(13) in auxiliary silica gel and polyvinyl acetate, mixed solution is added respectively, the mixed solution proportion added in both is 1:1.36, stir 10 minutes, in the epoxy glue first getting 20% polyvinyl acetate and mixed solution again and auxiliary silica gel, stir, add remaining 80% after 3 minutes, continue stirring 2 minutes, obtain colloid;
(14) colloid is heavily cooled 1 day, stripping and slicing at the air of 15 DEG C, can medical grade silicon rubber be obtained.
The invention has the beneficial effects as follows: formulating of recipe of the present invention is novel, raw material is easy to get, production technique is simple, made product has higher chemical stability, nonirritant, security are high, heat-resisting, anti-aging, and there is excellent mechanical property, relative to common sillicon rubber blocking, there is certain pharmaceutical cpd for liquid medicine bottle stopper simultaneously, be combined with Normal Saline, volatilize the composition that human body is useful, stop toxic ingredient and be mixed into, Safe beneficial.
Embodiment:
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
A kind of medical grade silicon rubber-polyvinyl acetate copolymerization plug, be made up of the raw material of following mass fraction:
Comprise auxiliary silica gel, polyvinyl acetate and mixed solution;
Wherein: auxiliary silica gel comprises: methyl vinyl silicone rubber 80 parts, polypropylene 10 parts, sodium starch glycolate 8 parts, 5 parts, gelatin, octamethylcyclotetrasilazane 4 parts, dioctyl phthalate (DOP) 2 parts, lactic acid 3 parts, containing hydrogen silicone oil 2 parts, Vulcanization accelerator TMTD 1 part, dicumyl peroxide 1 part, 3 parts, zinc oxide, stearic acid 1 part, Microcrystalline Wax 0.5 part, white carbon black 1 part, 2 parts, oxidation inhibitor;
Polyvinyl acetate comprises: polyvinyl alcohol: 15 parts, distilled water: 130 parts, pelopon A: 2 parts, OP-10:1 part, Potassium Persulphate: 1 part, vinyl acetate between to for plastic: 160 parts, dibutyl phthalate: 1 part, hydrochloric acid: 1 part, 37% formalin: 3 parts, open-chain crown ether: 8 parts, essence: 1 part, 40% caustic-soda aqueous solution: 1 part;
Mixed solution comprises: ginseng 5 parts, the bighead atractylodes rhizome 5 parts, raw rice sprout 5 parts, 50 parts, water, Fructus Crataegi (parched to brown) 5 parts, Divine Comedy 5 parts, radix polygonati officinalis 5 parts, Rhizoma Arisaematis 9 parts, calamus 15 parts, wood chip 15 parts, 100 parts, bean curd water.
Embodiment 2
A kind of medical grade silicon rubber-polyvinyl acetate copolymerization plug, be made up of the raw material of following mass fraction:
Comprise auxiliary silica gel, polyvinyl acetate and mixed solution;
Wherein: auxiliary silica gel comprises: methyl vinyl silicone rubber 100 parts, polypropylene 15 parts, sodium starch glycolate 12 parts, 8 parts, gelatin, octamethylcyclotetrasilazane 8 parts, dioctyl phthalate (DOP) 5 parts, lactic acid 7 parts, containing hydrogen silicone oil 5 parts, Vulcanization accelerator TMTD 4 parts, dicumyl peroxide 2.5 parts, 5 parts, zinc oxide, stearic acid 3 parts, Microcrystalline Wax 1.5 parts, white carbon black 2 parts, 5 parts, oxidation inhibitor;
Polyvinyl acetate comprises: polyvinyl alcohol: 20 parts, distilled water: 150 parts, pelopon A: 5 parts, OP-10:3 part, Potassium Persulphate: 2 parts, vinyl acetate between to for plastic: 180 parts, dibutyl phthalate: 2 parts, hydrochloric acid: 3 parts, 37% formalin: 5 parts, open-chain crown ether: 10 parts, essence: 2 parts, 40% caustic-soda aqueous solution: 2 parts;
Mixed solution comprises: ginseng 10 parts, the bighead atractylodes rhizome 10 parts, raw rice sprout 10 parts, 60 parts, water, Fructus Crataegi (parched to brown) 10 parts, Divine Comedy 10 parts, radix polygonati officinalis 7 parts, Rhizoma Arisaematis 12 parts, calamus 18 parts, wood chip 18 parts, 120 parts, bean curd water.
Described dioctyl phthalate (DOP) is medical grade.
Described oxidation inhibitor is made up of antioxidant 1010 and antioxidant 1076, and ratio is between the two 1:1.
A preparation method for medical grade silicon rubber-polyvinyl acetate copolymerization plug, is characterized in that, comprise the following steps:
First methyl vinyl silicone rubber, polypropylene are joined rubber mixing machine bag roller, then sodium starch glycolate, gelatin, octamethylcyclotetrasilazane, dioctyl phthalate (DOP), lactic acid, Vulcanization accelerator TMTD, dicumyl peroxide, zinc oxide is added, thin-pass 5 times, bottom sheet, heat-treats;
By the back mixing on rubber mixing machine of the sizing material after thermal treatment, namely clot, bottom sheet obtain rubber unvulcanizate;
In rubber unvulcanizate, add containing hydrogen silicone oil, oxidation inhibitor, stearic acid, Microcrystalline Wax, white carbon black, fully after mixing, blank, obtains auxiliary silica gel, stand-by;
Polyvinyl alcohol, OP-10, pelopon A, Potassium Persulphate are added in agitator, stirs 10 minutes, obtain being uniformly mixed solution;
Poured into by distilled water in stirred pot, heat, temperature controls at 60-70 DEG C, 10-20 minute, to water be uniformly mixed solution and dissolve completely;
Again heat, temperature controls at 70-80 DEG C, heats 30 minutes;
Add vinyl acetate between to for plastic, maintain reaction 4 hours of heating, obtain polyvinyl acetate emulsion;
Add open-chain crown ether, get 40% caustic-soda aqueous solution to regulate pH value, pH value is controlled at 4-7;
Add the formalin of 37% again, obtain work in-process;
Finally dibutyl phthalate and essence are added in work in-process, be uniformly mixed and obtain polyvinyl acetate, stand-by;
Get ginseng, the bighead atractylodes rhizome, raw rice sprout, pulverize, mixing water, is sprayed on Fructus Crataegi (parched to brown), until Fructus Crataegi (parched to brown) moisture content higher than 50% time, take out Fructus Crataegi (parched to brown) and be placed in sealed can 1-2 hour;
To spray remaining liquid again, wood chip, Divine Comedy, radix polygonati officinalis, Rhizoma Arisaematis smash into powder to pieces with calamus, pour in liquid, stir, take out Fructus Crataegi (parched to brown) simultaneously and be placed in liquid, seal 1 hour, then under being placed in the sun, be exposed to the sun to the complete evaporate to dryness of liquid, take out remaining powder agglomates, smash to pieces, sieve, mix with bean curd water, obtain mixed solution;
Mixed solution is added respectively in auxiliary silica gel and polyvinyl acetate, the mixed solution proportion added in both is 1:1.36, stir 10 minutes, in the epoxy glue first getting 20% polyvinyl acetate and mixed solution again and auxiliary silica gel, stir, add remaining 80% after 3 minutes, continue stirring 2 minutes, obtain colloid;
Colloid is heavily cooled 1 day, stripping and slicing at the air of 15 DEG C, can medical grade silicon rubber be obtained.
Carry out mechanical property and biological property index determining according to China's GB to silicon rubber prepared by embodiment 1-3, result is as shown in table 1,2;
The mechanical performance index of medical grade silicon rubber prepared by table 1 the present invention-polyvinyl acetate copolymerization plug
| Project | Embodiment 1 | Embodiment 2 |
| Shore a hardness/degree | 70 | 65 |
| Tensile strength/MPa | 9 | 8.9 |
| Tear strength/kN.m -1 | 35 | 32 |
| Compression set/% | 2.5 | 2.7 |
| Hot air aging coefficient | 0.81 | 0.85 |
The biological property index of medical grade silicon rubber prepared by table 2 the present invention-polyvinyl acetate copolymerization plug
| Project | Embodiment 1 | Embodiment 2 |
| Cell toxicity test | Qualified | Qualified |
| Acute toxicity test | Qualified | Qualified |
| Picosecond laser pulse | Qualified | Qualified |
| Short-term muscle Implant experiment | Qualified | Qualified |
As can be seen from table 1,2, medical grade silicon rubber prepared by the present invention-polyvinyl acetate copolymerization plug not only has good mechanical property, stability, thermotolerance, resistance to deterioration, also has nontoxic, nonirritant, the feature high to organism security.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. medical grade silicon rubber-polyvinyl acetate copolymerization plug, is characterized in that, be made up of the raw material of following mass fraction:
Comprise auxiliary silica gel, polyvinyl acetate and mixed solution;
Wherein: auxiliary silica gel comprises: methyl vinyl silicone rubber 80-100 part, polypropylene 10-15 part, sodium starch glycolate 8-12 part, gelatin 5-8 part, octamethylcyclotetrasilazane 4-8 part, dioctyl phthalate (DOP) 2-5 part, lactic acid 3-7 part, containing hydrogen silicone oil 2-5 part, Vulcanization accelerator TMTD 1-4 part, dicumyl peroxide 1-2.5 part, zinc oxide 3-5 part, stearic acid 1-3 part, Microcrystalline Wax 0.5-1.5 part, white carbon black 1-2 part, oxidation inhibitor 2-5 part;
Polyvinyl acetate comprises: polyvinyl alcohol: 15-20 part, distilled water: 130-150 part, pelopon A: 2-5 part, OP-10:1-3 part, Potassium Persulphate: 1-2 part, vinyl acetate between to for plastic: 160-180 part, dibutyl phthalate: 1-2 part, hydrochloric acid: 1-3 part, 37% formalin: 3-5 part, open-chain crown ether: 8-10 part, essence: 1-2 part, 40% caustic-soda aqueous solution: 1-2 part;
Mixed solution comprises: ginseng 5-10 part, bighead atractylodes rhizome 5-10 part, raw rice sprout 5-10 part, water 50-60 part, Fructus Crataegi (parched to brown) 5-10 part, Divine Comedy 5-10 part, radix polygonati officinalis 5-7 part, Rhizoma Arisaematis 9-12 part, calamus 15-18 part, wood chip 15-18 part, bean curd water 100-120 part.
2. a kind of medical grade silicon rubber according to claim 1-polyvinyl acetate copolymerization plug, is characterized in that: described dioctyl phthalate (DOP) is medical grade.
3. a kind of medical grade silicon rubber according to claim 1-polyvinyl acetate copolymerization plug, is characterized in that: described oxidation inhibitor is made up of antioxidant 1010 and antioxidant 1076, and ratio is between the two 1:1.
4. a kind of medical grade silicon rubber according to claim 1-polyvinyl acetate copolymerization plug, is characterized in that: the preparation method of described medical grade silicon rubber, comprises the following steps:
(1) first methyl vinyl silicone rubber, polypropylene are joined rubber mixing machine bag roller, then sodium starch glycolate, gelatin, octamethylcyclotetrasilazane, dioctyl phthalate (DOP), lactic acid, Vulcanization accelerator TMTD, dicumyl peroxide, zinc oxide is added, thin-pass 5 times, bottom sheet, heat-treats;
(2) by the back mixing on rubber mixing machine of the sizing material after thermal treatment, namely clot, bottom sheet obtain rubber unvulcanizate;
(3) in rubber unvulcanizate, add containing hydrogen silicone oil, oxidation inhibitor, stearic acid, Microcrystalline Wax, white carbon black, fully after mixing, blank, obtains auxiliary silica gel, stand-by;
(4) polyvinyl alcohol, OP-10, pelopon A, Potassium Persulphate are added in agitator, stir 10 minutes, obtain being uniformly mixed solution;
(5) pour in stirred pot by distilled water, heat, temperature controls at 60-70 DEG C, 10-20 minute, to water be uniformly mixed solution and dissolve completely;
(6) again heat, temperature controls at 70-80 DEG C, heats 30 minutes;
(7) add vinyl acetate between to for plastic, maintain reaction 4 hours of heating, obtain polyvinyl acetate emulsion;
(8) add open-chain crown ether, get 40% caustic-soda aqueous solution to regulate pH value, pH value is controlled at 4-7;
(9) add the formalin of 37% again, obtain work in-process;
(10) finally dibutyl phthalate and essence are added in work in-process, be uniformly mixed and obtain polyvinyl acetate, stand-by;
(11) get ginseng, the bighead atractylodes rhizome, raw rice sprout, pulverize, mixing water, is sprayed on Fructus Crataegi (parched to brown), until Fructus Crataegi (parched to brown) moisture content higher than 50% time, take out Fructus Crataegi (parched to brown) and be placed in sealed can 1-2 hour;
(12) will spray remaining liquid again, wood chip, Divine Comedy, radix polygonati officinalis, Rhizoma Arisaematis smash into powder to pieces with calamus, pour in liquid, stir, take out Fructus Crataegi (parched to brown) simultaneously and be placed in liquid, seal 1 hour, then under being placed in the sun, be exposed to the sun to the complete evaporate to dryness of liquid, take out remaining powder agglomates, smash to pieces, sieve, mix with bean curd water, obtain mixed solution;
(13) in auxiliary silica gel and polyvinyl acetate, mixed solution is added respectively, the mixed solution proportion added in both is 1:1.36, stir 10 minutes, in the epoxy glue first getting 20% polyvinyl acetate and mixed solution again and auxiliary silica gel, stir, add remaining 80% after 3 minutes, continue stirring 2 minutes, obtain colloid;
(14) colloid is heavily cooled 1 day, stripping and slicing at the air of 15 DEG C, can medical grade silicon rubber be obtained.
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| CN201510694780.9A CN105315676A (en) | 2015-10-21 | 2015-10-21 | Medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113289780A (en) * | 2021-05-11 | 2021-08-24 | 上海驻净电子科技有限公司 | Silica gel nozzle structure for tooth flushing device and manufacturing method thereof |
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| CN104073097A (en) * | 2014-06-26 | 2014-10-01 | 安徽神舟飞船胶业有限公司 | Formula and preparation process of transparent and fragrant polyvinyl acetate emulsion paint |
| CN104177836A (en) * | 2014-07-21 | 2014-12-03 | 安徽中马橡塑制品有限公司 | Medical silicon rubber formula and preparation method thereof |
| CN104855567A (en) * | 2015-04-27 | 2015-08-26 | 安徽宏云制茶有限公司 | Processing method of yellow transparent tea for relieving hypotension |
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- 2015-10-21 CN CN201510694780.9A patent/CN105315676A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104073097A (en) * | 2014-06-26 | 2014-10-01 | 安徽神舟飞船胶业有限公司 | Formula and preparation process of transparent and fragrant polyvinyl acetate emulsion paint |
| CN104177836A (en) * | 2014-07-21 | 2014-12-03 | 安徽中马橡塑制品有限公司 | Medical silicon rubber formula and preparation method thereof |
| CN104855567A (en) * | 2015-04-27 | 2015-08-26 | 安徽宏云制茶有限公司 | Processing method of yellow transparent tea for relieving hypotension |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113289780A (en) * | 2021-05-11 | 2021-08-24 | 上海驻净电子科技有限公司 | Silica gel nozzle structure for tooth flushing device and manufacturing method thereof |
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