CN102876042A - Silicone rubber pipe and its preparation method - Google Patents
Silicone rubber pipe and its preparation method Download PDFInfo
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- CN102876042A CN102876042A CN2012103507574A CN201210350757A CN102876042A CN 102876042 A CN102876042 A CN 102876042A CN 2012103507574 A CN2012103507574 A CN 2012103507574A CN 201210350757 A CN201210350757 A CN 201210350757A CN 102876042 A CN102876042 A CN 102876042A
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- silicone rubber
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- rubber tube
- alcohol
- mixture
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Abstract
The invention relates to a silicone rubber pipe which comprises the following materials by weight: 80-94 parts of silicone rubber blend, 0.0001-0.0005 parts of a platinum vulcanizing agent, 1-6 parts of hydrosilicone oil, 1-8 parts of heat-resistant additive, and 0.05-0.8 parts of reaction inhibitor. Apreparation method comprises the steps of adding the heat-resistant additive and platinum vulcanizing agent into the silicone rubber blend, blending, adding the hydrosilicone oil and reaction inhibitor, further blending, and extruding to obtain silicone rubber pipe. By adopting the platinum vulcanizing agent, the method prepares the silicone rubber pipe through once vulcanizing process. The silicone rubber pipe reaches FDA, LFGB and DGCCRF food grade requirements, and has wide normal application temperature range of (-60) to 250 DEG C.
Description
Technical field
The invention belongs to the silastic product technical field, be specifically related to a kind of silicone rubber tube and preparation method thereof.
Background technology
Silicon rubber has excellent high and low temperature resistance, weathering resistance, and electric insulating quality and physiology inertia etc. are widely used in aerospace, and are electric, building, industry and the health cares such as automobile mechanical, the every field of daily life.The main application form of silicon rubber is various vulcanized article, comprising the various offset plates in the pressing, packing ring, valve, film, vibroshock, plug, rubber roll, potentiometer insulation covering, waveguide and button; Various sebific ducts in the extruded product, adhesive tape, glue rope, the gasket in electric wire foreskin and the tape product, diaphragm, isolation cloth etc.
The use of silicon rubber water pipe in daily life and industrial production is very extensive, the silicon rubber water pipe of existing traditional market all is the method for making that adopts vulcanizing agent, the vulcanizing agent that adopts is generally peroxide vulcanizing agent, for example benzoyl peroxide, 2, the 4-dichlorobenzoperoxide, dicumyl peroxide, 2,5-dimethyl-2,5-di-t-butyl hexane peroxide etc.Wherein, 2,5-dimethyl-2, the 5-di-t-butyl hexane peroxide is called for short " two 25 ", and the curing temperature of moulding pressing is generally at 165 ~ 190 ℃, the molding sulfuration temperature of this silastic product is high, expend a large amount of electric power, the residual smell of silastic product need carry out post cure and just can remove the vulcanizing agent degradation production.
2,4-dichlorobenzoperoxide is called for short " two 24 ", is mainly used in the hot-air vulcanization moulding more than 120 ℃, such as silicon rubber tubing, and the production of sheet material and wire rod.Use " two 24 " sulfuration, the residual vulcanizing agent in the silastic product decomposes the generation peculiar smell, need to carry out post cure and just can reach tasteless requirement, and " arsenic " phenomenon occur easily.The silicone rubber tube that adopts present existing peroxide vulcanizing agent sulfuration to obtain need to carry out the method cost height that post cure just can obtain finished product, and production efficiency is low, and product is of poor quality.
Existing silicone rubber tube environmental requirement just reaches RoHS, and best is to reach the Halogen standard, can reach the very few of food grade environmental requirement.And the temperature limit of existing silicone rubber tube is narrower, serious restriction its application.
CN 102080744 A disclose a kind of silicon rubber water pipe and manufacturing process thereof, and described silicon rubber water pipe is made by the raw material of following weight percent: silicon rubber gross rubber 85 ~ 95%, platinum group catalyst 0.3 ~ 1.5%, containing hydrogen silicone oil 0.5 ~ 5%, heat-resistant agent 0.5 ~ 10%, reaction suppressor 0.01 ~ 1%; Take by weighing the raw material of above-mentioned weight percent, open refining and extrude manufacturing technology steps through mixing, can obtain finished product.That this silica gel water pipe finished product has is high temperature resistant, the advantage of free from extraneous odour, good product quality, meets the requirement of relevant food level.But this silicon rubber water pipe adopts post cure technique in preparation process, process period is longer, and cost is higher.
Summary of the invention
One of purpose of the present invention is to provide a kind of silicon rubber, and described silicon rubber reaches the food grade specification that can be used for medical product even be directly used in human body, can use under-60 ~ 250 ℃ of temperature.
In order to achieve the above object, the present invention has adopted following technical scheme:
Described silicone rubber tube comprises by weight:
Preferably, described silicone rubber tube comprises by weight:
Preferably, described silicone rubber tube comprises by weight:
The parts by weight of described silicon rubber gross rubber are 80 ~ 94, for example 81,82,83,84,85,86,87,88,89,90,91,92,93, and preferred 82 ~ 92, further preferred 80 ~ 90.
The parts by weight of described platinum vulcanizing agent are 0.0001 ~ 0.0005, for example 0.0002,0.0003,0.0004, and preferred 0.0002 ~ 0.0005, further preferred 0.0003 ~ 0.0005.
The parts by weight of described containing hydrogen silicone oil are 1 ~ 6, for example 1.5,2,2.5,3,3.5,4,4.5,5,5.5, preferred 2 ~ 5.
The parts by weight of described heat-resistant agent are 1 ~ 8, for example 1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5, and preferred 2 ~ 7, further preferred 3 ~ 6.
The parts by weight of described reaction suppressor are 0.05 ~ 0.8, for example 0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.75, and preferred 0.1 ~ 0.7, further preferred 0.2 ~ 0.6.
Preferably, described platinum vulcanizing agent is Platinic chloride.
Preferably, described heat-resistant agent is selected from Fe
2O
3, Fe
3O
4, FeO, Al
2O
3, any one or at least two kinds among ZnO or the MgO mixture, described mixture is the mixture of MgO and ZnO for example, Al
2O
3With the mixture of FeO, Fe
3O
4And Fe
2O
3Mixture, MgO and Al
2O
3Mixture, the mixture of ZnO and FeO, Fe
3O
4And Al
2O
3Mixture, MgO, ZnO and Al
2O
3Mixture, FeO, Fe
3O
4And Fe
2O
3Mixture, preferred Fe
2O
3, Fe
3O
4Or the mixture of any one or at least two kinds among the FeO.
Preferably, described reaction suppressor is the reaction product of alcohol compound or alcohol compound and silane.
Silane, molecular formula SiH
4, shown in the following equation of the reaction of alcohol compound, reaction product is Si (OR)
4, tetramethoxy-silicane for example, tetraethoxysilane, tetrapropoxysilane.
Preferably, described alcohol compound is low-carbon alcohol, the alcohol of preferred 1 ~ 18 carbon atom, the alcohol of further preferred 1 ~ 8 carbon atom, the monohydroxy-alcohol of further preferred 1 ~ 5 carbon atom, the straight-chain monohydric alcohol of preferred 1 ~ 5 carbon atom further, the mixture of any one in methyl alcohol, ethanol or the propyl alcohol or at least two kinds most preferably, described mixture is the mixture of methyl alcohol and ethanol for example, the mixture of methyl alcohol and propyl alcohol, the mixture of ethanol and propyl alcohol, the mixture of methyl alcohol, ethanol and propyl alcohol, according to the selection of alcohol compound, can determine the R group among the ROH.
Preferably, described reaction suppressor is selected from the 1-ethynylcyclohexanol, 3,5-dimethyl-1-hexin-3-alcohol, the mixture of any one in 3-Phenyl-1-butyn-3-ol or the methylbutynol or at least two kinds, described mixture is the mixture of methylbutynol and 3-Phenyl-1-butyn-3-ol for example, 3, the mixture of 5-dimethyl-pure and mild 1-ethynylcyclohexanol of 1-hexin-3-, methylbutynol and 3, the mixture of 5-dimethyl-1-hexin-3-alcohol, the mixture of 3-Phenyl-1-butyn-3-ol and 1-ethynylcyclohexanol, methylbutynol, 3-Phenyl-1-butyn-3-ol and 3, the mixture of 5-dimethyl-1-hexin-3-alcohol, methylbutynol, 3-Phenyl-1-butyn-3-ol, 3, the mixture of 5-dimethyl-pure and mild 1-ethynylcyclohexanol of 1-hexin-3-, preferred 1-ethynylcyclohexanol, the mixture of any one in 3,5-dimethyl-1-hexin-3-alcohol or the methylbutynol or at least two kinds.
Preferably, described containing hydrogen silicone oil is that Methyl Hydrogen Polysiloxane Fluid is or/and the vinyl containing hydrogen silicone oil.
" comprising " of the present invention, mean it except described component, can also comprise other components, these other components give described silicone rubber tube different characteristics.In addition, " comprising " of the present invention, can also replace with enclosed " being " or " by ... form ".
For example, silicone rubber tube of the present invention can also comprise stopping composition, and described stopping composition is selected from the mixture of a kind of in light calcium carbonate, water-ground limestone, talcum powder, aluminium hydroxide, white carbon black or the silicon powder or at least two kinds.The parts by weight of described stopping composition are 1 ~ 10, for example 2,3,4,5,6,7,8,9.
For example, silicone rubber tube of the present invention can also comprise oxidation inhibitor, and described oxidation inhibitor is antioxidant 1010 or irgasfos 168 or antioxidant 1076 for example.The parts by weight of described oxidation inhibitor are 1 ~ 10, for example 2,3,4,5,6,7,8,9.
Weight part described in the present invention adopts same benchmark to calculate, and unit is identical.
Two of purpose of the present invention is to provide a kind of preparation method of aforesaid silicone rubber tube, and described method comprises the steps:
(1) take by weighing raw material by prescription, heat-resistant agent and platinum vulcanizing agent are added in the silicon rubber gross rubber, mixing, and then add containing hydrogen silicone oil and reaction suppressor and continue mixingly, obtain mixing product;
(2) mixing product is extruded, obtained silicone rubber tube.
Preferably, step (1) adds heat-resistant agent and platinum vulcanizing agent that the mixing time is 3 ~ 10min behind the silicon rubber gross rubber, for example 4min, 5min, 6min, 7min, 8min, 9min, preferred 4 ~ 9min, further preferred 5 ~ 8min.
Preferably, step (1) adds heat-resistant agent and platinum vulcanizing agent that mixing temperature is 15 ~ 50 ℃ behind the silicon rubber gross rubber, for example 18 ℃, 21 ℃, 24 ℃, 27 ℃, 30 ℃, 33 ℃, 36 ℃, 39 ℃, 42 ℃, 45 ℃, 48 ℃, preferred 18 ~ 42 ℃, further preferred 20 ~ 45 ℃.
Preferably, continuing the mixing time in the step (1) is 3 ~ 10min, for example 4min, 5min, 6min, 7min, 8min, 9min, preferred 4 ~ 9min, further preferred 5 ~ 8min.
Preferably, continuing mixing temperature in the step (1) is 15 ~ 50 ℃, for example 18 ℃, 21 ℃, 24 ℃, 27 ℃, 30 ℃, 33 ℃, 36 ℃, 39 ℃, 42 ℃, 45 ℃, 48 ℃, and preferred 18 ~ 42 ℃, further preferred 20 ~ 45 ℃.
Preferably, undertaken by mill or Banbury mixer mixing, preferred mill.
Preferably, extrude by forcing machine, the temperature of forcing machine is 15 ~ 55 ℃, for example 18 ℃, 21 ℃, 24 ℃, 27 ℃, 30 ℃, 33 ℃, 36 ℃, 39 ℃, 42 ℃, 45 ℃, 48 ℃, 51 ℃, 54 ℃, preferred 18 ~ 52 ℃, further preferred 20 ~ 50 ℃.
Preferably, the extruded velocity of forcing machine is 15 ~ 55 m/mins, for example 18 m/mins, 21 m/mins, 24 m/mins, 27 m/mins, 30 m/mins, 35 m/mins, 40 m/mins, 45 m/mins, 48 m/mins, 51 m/mins, 54 m/mins, preferred 18 ~ 52 m/mins, further preferred 20 ~ 50 m/mins.
Among the present invention, utilizing mill to carry out when mixing, when the mill temperature surpasses 35 ℃, in the roller of mill, add 23 ℃ water to reduce the temperature of mill.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts the platinum vulcanizing agent and prepares silicone rubber tube by a sulfuration process, and described silicone rubber tube environmental requirement has not only reached RoHS and Halogen standard, and has reached FDA, LFGB, the requirement of DGCCRF food grade;
(2) silicone rubber tube use temperature wide ranges of the present invention, low temperature resistant all very excellent with resistance to elevated temperatures, can under-60 ~ 250 ℃ temperature, normally use.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
Embodiment 1
A kind of silicone rubber tube comprises by weight:
The preparation method of described silicone rubber tube is as described below:
(1) takes by weighing raw material by prescription, heat-resistant agent and platinum vulcanizing agent are added in the silicon rubber gross rubber, by mill mixing 3min under 50 ℃, and then add containing hydrogen silicone oil and reaction suppressor continuation mixing 3min under 50 ℃, obtain mixing product;
(2) mixing product is extruded under 30 ℃, extruded velocity is 30 m/mins, obtains silicone rubber tube.
Embodiment 2
A kind of silicone rubber tube comprises by weight:
The preparation method of described silicone rubber tube is as described below:
(1) takes by weighing raw material by prescription, heat-resistant agent and platinum vulcanizing agent are added in the silicon rubber gross rubber, by mill mixing 10min under 15 ℃, and then add containing hydrogen silicone oil and reaction suppressor continuation mixing 10min under 15 ℃, obtain mixing product;
(2) mixing product is extruded under 15 ℃, extruded velocity is 15 m/mins, obtains silicone rubber tube.
Embodiment 3
A kind of silicone rubber tube comprises by weight:
The preparation method of described silicone rubber tube is as described below:
(1) takes by weighing raw material by prescription, heat-resistant agent and platinum vulcanizing agent are added in the silicon rubber gross rubber, by mill mixing 6min under 40 ℃, and then add containing hydrogen silicone oil and reaction suppressor continuation mixing 6min under 40 ℃, obtain mixing product;
(2) mixing product is extruded under 55 ℃, extruded velocity is 55 m/mins, obtains silicone rubber tube.
Comparative Examples 1
Comparative Examples 1 is disclosed one of them embodiment of CN 102080744 A.
A kind of manufacturing process of silicon rubber water pipe, its preparation process is as follows:
A, take by weighing raw material: take by weighing by weight percentage raw material: silicon rubber gross rubber 90%, Platinic chloride 1.5%, Methyl Hydrogen Polysiloxane Fluid 5%, Fe
2O
33%, the 1-ethynylcyclohexanol 0.5%;
Refining is opened in B, mixing: the Fe with 3%
2O
3Add in 90% the silicon rubber gross rubber with 1.5% Platinic chloride, then add and evenly open refining in the mill, the temperature of mill is 23 ℃, 5% containing hydrogen silicone oil and 0.5% 1-ethynylcyclohexanol is added in the mill again, mixes 5min, obtains mixture; When the mill temperature surpasses 35 ℃, in the roller of mill, add 23 ℃ water to reduce the temperature of mill;
C: extrude: the good mixture of will opening refining is put into forcing machine and is extruded, and the speed of forcing machine is 650mm/h, and then by baking oven, the temperature of baking oven is 500 ℃, stops 3min in baking oven, places in the dish to get product.
Embodiment 1-3 and Comparative Examples 1 described silicone rubber tube are carried out performance test, and the result is as shown in the table:
Should be noted that and understand, in the situation that does not break away from the desired the spirit and scope of the present invention of accompanying claim, can make to the present invention of foregoing detailed description various modifications and improvement.Therefore, the scope of claimed technical scheme is not subjected to the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention illustrates method detailed of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned method detailed, does not mean that namely the present invention must rely on above-mentioned method detailed and could implement.The person of ordinary skill in the field should understand, any improvement in the present invention to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (10)
1. a silicone rubber tube is characterized in that, described silicone rubber tube comprises by weight:
2. silicone rubber tube as claimed in claim 1 is characterized in that, described silicone rubber tube comprises by weight:
3. silicone rubber tube as claimed in claim 1 or 2 is characterized in that, described silicone rubber tube comprises by weight:
4. such as the described silicone rubber tube of one of claim 1-3, it is characterized in that described platinum vulcanizing agent is Platinic chloride;
Preferably, described heat-resistant agent is selected from Fe
2O
3, Fe
3O
4, FeO, Al
2O
3, any one or at least two kinds among ZnO or the MgO mixture, preferred Fe
2O
3, Fe
3O
4Or the mixture of any one or at least two kinds among the FeO.
5. such as the described silicone rubber tube of one of claim 1-4, it is characterized in that described reaction suppressor is the reaction product of alcohol compound or alcohol compound and silane.
6. such as the described silicone rubber tube of one of claim 1-5, it is characterized in that, described alcohol compound is low-carbon alcohol, the alcohol of preferred 1 ~ 18 carbon atom, the alcohol of further preferred 1 ~ 8 carbon atom, the further monohydroxy-alcohol of preferred 1 ~ 5 carbon atom, the straight-chain monohydric alcohol of preferred 1 ~ 5 carbon atom further, the most preferably mixture of any one in methyl alcohol, ethanol or the propyl alcohol or at least two kinds.
7. such as the described silicone rubber tube of one of claim 1-6, it is characterized in that, described reaction suppressor is selected from 1-ethynylcyclohexanol, 3, the mixture of any one in 5-dimethyl-1-hexin-3-alcohol, 3-Phenyl-1-butyn-3-ol or the methylbutynol or at least two kinds, preferred 1-ethynylcyclohexanol, 3, the mixture of any one in 5-dimethyl-1-hexin-3-alcohol or the methylbutynol or at least two kinds;
Preferably, described containing hydrogen silicone oil is that Methyl Hydrogen Polysiloxane Fluid is or/and the vinyl containing hydrogen silicone oil.
8. the preparation method such as one of claim 1-7 described silicone rubber tube is characterized in that, described method comprises the steps:
(1) take by weighing raw material by prescription, heat-resistant agent and platinum vulcanizing agent are added in the silicon rubber gross rubber, mixing, and then add containing hydrogen silicone oil and reaction suppressor and continue mixingly, obtain mixing product;
(2) mixing product is extruded, obtained silicone rubber tube.
9. method as claimed in claim 8 is characterized in that, step (1) adds heat-resistant agent and platinum vulcanizing agent that the mixing time is 3 ~ 10min behind the silicon rubber gross rubber, preferred 4 ~ 9min, further preferred 5 ~ 8min;
Preferably, step (1) adds heat-resistant agent and platinum vulcanizing agent that mixing temperature is 15 ~ 50 ℃ behind the silicon rubber gross rubber, and preferred 18 ~ 42 ℃, further preferred 20 ~ 45 ℃;
Preferably, continuing the mixing time in the step (1) is 3 ~ 10min, preferred 4 ~ 9min, further preferred 5 ~ 8min;
Preferably, continuing mixing temperature in the step (1) is 15 ~ 50 ℃, preferred 18 ~ 42 ℃, and further preferred 20 ~ 45 ℃.
10. method as claimed in claim 8 or 9 is characterized in that, undertaken by mill or Banbury mixer mixing, preferred mill;
Preferably, extrude by forcing machine, the temperature of forcing machine is 15 ~ 55 ℃, preferred 18 ~ 52 ℃, and further preferred 20 ~ 50 ℃; Preferably, the extruded velocity of forcing machine is 15 ~ 55 m/mins, preferred 18 ~ 52 m/mins, and further preferred 20 ~ 50 m/mins.
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|---|---|---|---|
| CN2012103507574A CN102876042A (en) | 2012-09-19 | 2012-09-19 | Silicone rubber pipe and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103507574A CN102876042A (en) | 2012-09-19 | 2012-09-19 | Silicone rubber pipe and its preparation method |
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| CN102876042A true CN102876042A (en) | 2013-01-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497576A (en) * | 2014-12-26 | 2015-04-08 | 新乡市方元橡塑密封系统有限公司 | Silicone rubber antifreezing foam tube and preparation method thereof |
| CN106349712A (en) * | 2016-10-11 | 2017-01-25 | 娄敬涛 | Composition and preparation method of food-grade silicone |
| CN114437546A (en) * | 2021-12-16 | 2022-05-06 | 广州回天新材料有限公司 | High-thermal-conductivity organic silicon gel and preparation method thereof |
| CN116690931A (en) * | 2023-06-09 | 2023-09-05 | 东莞市裕天硅橡胶科技有限公司 | Preparation process and product of silica gel heating pipe for pneumoperitoneum machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080744A (en) * | 2009-11-26 | 2011-06-01 | 东莞日进电线有限公司 | Silicon rubber water pipe and manufacturing process thereof |
-
2012
- 2012-09-19 CN CN2012103507574A patent/CN102876042A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080744A (en) * | 2009-11-26 | 2011-06-01 | 东莞日进电线有限公司 | Silicon rubber water pipe and manufacturing process thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497576A (en) * | 2014-12-26 | 2015-04-08 | 新乡市方元橡塑密封系统有限公司 | Silicone rubber antifreezing foam tube and preparation method thereof |
| CN106349712A (en) * | 2016-10-11 | 2017-01-25 | 娄敬涛 | Composition and preparation method of food-grade silicone |
| CN114437546A (en) * | 2021-12-16 | 2022-05-06 | 广州回天新材料有限公司 | High-thermal-conductivity organic silicon gel and preparation method thereof |
| CN116690931A (en) * | 2023-06-09 | 2023-09-05 | 东莞市裕天硅橡胶科技有限公司 | Preparation process and product of silica gel heating pipe for pneumoperitoneum machine |
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Application publication date: 20130116 |