CN103214847A - Silicon rubber mold for integral moulding of composite skirt and preparation method - Google Patents
Silicon rubber mold for integral moulding of composite skirt and preparation method Download PDFInfo
- Publication number
- CN103214847A CN103214847A CN2013100892042A CN201310089204A CN103214847A CN 103214847 A CN103214847 A CN 103214847A CN 2013100892042 A CN2013100892042 A CN 2013100892042A CN 201310089204 A CN201310089204 A CN 201310089204A CN 103214847 A CN103214847 A CN 103214847A
- Authority
- CN
- China
- Prior art keywords
- silicon rubber
- mould
- global formation
- vulcanizing agent
- filler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a silicon rubber mold for integral moulding of a composite skirt. The silicon rubber mold is made from the following raw materials by weight: 15-85% of a silicon rubber emulsion, 1-10% of a vulcanizing agent, 0-2% of an accelerant, and 10-75% of a filler. The preparation method of the mold comprises the steps of: 1) weighing the silicone rubber body emulsion and the vulcanizing agent, stirring them evenly and conducting vacuum defoamation; 2) weighing the accelerant and the filler, mixing them with the silicone rubber body emulsion and the vulcanizing agent and performing rapid stirring, then carrying out vacuum defoamation again; 3) injecting the mixed solution between an outer membrane and a rigid die, and conducting curing at 10-25DEG C for 24-48h to obtain a soft membrane product; and 4) heating the soft membrane product respectively at 90-100DEG C and 180-200DEG C for 1-1.5h, and finally removing the outer die. The material provided in the invention has the advantages of good mechanical performance, light weight, simple moulding technology, and low price, and is suitable for extensive application in the field of aerospace composite materials.
Description
Technical field
The present invention relates to carbon fibers/fiberglass and strengthen the polymer matrix composites field, refer to that particularly a kind of compound skirt global formation is with silicon rubber mould and preparation method.
Background technology
Along with space equipment is more and more higher to the requirement of material, lighting, high strength, high-modulus become the focus of its research just gradually, and matrix material forms and is first-selection because of possessing above characteristics.The solid rocket motor case joint skirt is that the integral body of housing is extended, be used to realize guided missile inter-stage section connects or with being connected of miscellaneous part, stand multiple load such as axial compression, moment of flexure, shearing, interior pressure, the stressing conditions more complicated, how under the situation that does not increase joint skirt weight, simplify moulding process, and improve its performance, most important to the raising of whole motor body performance.
The required composite element of existing solid rocket motor case joint skirt often adopts Wrapping formed, owing to be difficult to realize global formation, component performance is subjected to the restriction of junction intensity.Compound skirt integral forming technique is a kind of mold closing technology, though this technology has the high characteristics of dimensional precision, also can't pressurize to composite product simultaneously.How to reach the purpose that improves compound skirt global formation goods mechanical property, become the focus of space equipment field of compound material research, yet the report of the successful example of this respect is also fewer at present by improving the composite product fiber volume fraction.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of material mechanical performance is good, in light weight, moulding process is simple, cheap compound skirt global formation with silicon rubber mould and preparation method.
For achieving the above object, the compound skirt global formation silicon rubber mould that the present invention is designed is made by following raw materials by weight percent: silicon rubber emulsion 15 ~ 85%, vulcanizing agent 1 ~ 10%, promotor 0 ~ 2%, filler 10 ~ 75%.Wherein, silicon rubber emulsion viscosity after 23 ℃ of stirrings is 5 * 10
4MPas, the range estimation outward appearance is an oyster white/translucent.
As preferred version, described mould is made by following raw materials by weight percent: silicon rubber emulsion 35 ~ 65%, vulcanizing agent 4 ~ 8%, promotor 1 ~ 2%, filler 30 ~ 55%.
Again further, described silicon rubber emulsion is a kind of or its combination in methyl-monosilane, ethylene methacrylic base silane, the methyl ethylene phenyl silane.
Also further, described vulcanizing agent is a tetraethoxy.
Further, described promotor is two lauric acid butyl tin.
Further, described filler is made up of for 1 ~ 8 part 1 ~ 3 part of talcum powder, 1 ~ 4 part of silica powder, silicon powder by weight.
For achieving the above object, the designed compound skirt global formation of the present invention preparation method of silicon rubber mould may further comprise the steps:
1) takes by weighing the silicon rubber emulsion according to described ratio and vulcanizing agent places beaker, mix, under 10 ~ 25 ℃ temperature condition, put into vacuum drying oven, the unlatching vacuum drying oven reaches the set(ting)value of 0.10 ~ 0.15Mpa to baking oven vacuum tightness, carry out deaeration and handle 30 ~ 60min, treat to take out beaker behind the vacuum drying oven pressure removal to no longer occurring than till the gross blow hole;
2) take by weighing promotor and filler in described ratio, join in silicon rubber emulsion and the vulcanizing agent mixed solution, stir fast, repeating step 1 then) in vacuum defoamation handle;
3) between moulding that the interior molding surface size according to compound skirt designs is with adventitia and rigid mould, inject through step 2) mixed solution handled, solidify 24 ~ 48h, acquisition mantle goods under 10 ~ 25 ℃ temperature condition;
4) under 90 ~ 100 ℃ temperature condition step 3) gained mantle goods are heated 1.0 ~ 1.5h earlier, heating 1.0 ~ 1.5h under 180 ~ 200 ℃ temperature condition removes external mold at last then, obtains described silicon rubber mould.
As preferred version, in the described step 3), when temperature was 10 ~ 15 ℃, be 40 ~ 48h set time; When temperature was 20 ~ 25 ℃, be 24 ~ 30h set time.
Principle of work of the present invention is such: owing to have certain elasticity, have suitable coefficient of thermal expansion and bulging force, and the increase of the pressure following temperature that the thermal expansion mould produced and increasing gradually, so adopt silicon rubber mould as product formpiston (being internal mold), its external surface shape size is consistent with the internal surface profile of the compound skirt of require preparation when making silicon rubber mould, this is to have utilized silicon rubber to add the characteristics that the suitable bulging force of thermogenesis is realized improving the goods fiber volume fraction and reduced porosity, higher solidification value when making the silicon rubber mould ability solidify, the pressure of silicon rubber mould expanded by heating generation simultaneously and the gelation point of compound skirt resin system are complementary, under the gelation point temperature of resin system, needed pressure when the silicon rubber mould expanding material can produce and reach compound skirt moulding, wherein, silicon rubber emulsion and vulcanizing agent reaction generate silicon rubber mould, promotor is played the effect of accelerating silicon rubber emulsion vulcanization rate, and filler is used to strengthen the intensity of silicon rubber mould, makes it reach the requirement of the required material of solid rocket motor case joint skirt.
In sum, the invention has the advantages that: 1, make full use of suitable coefficient of thermal expansion and bulging force that silicon rubber has, can exert pressure to carbon-fibre composite at expanded by heating under the heating condition, obtain to satisfy mechanical property and the lighter composite product of quality;
2, this forming method has cheap, moulding process characteristic of simple, for the development of compound skirt of following solid rocket motor case and even large-scale composite material load spare provides the reliable technique approach.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment:
Embodiment 1:
The silicon rubber emulsion of 150 grams and the vulcanizing agent of 100 grams are mixed, stirring and placing vacuum tightness is that the 0.10MPa vacuum drying oven carries out deaeration in 60 minutes processing, and pour in the 2000ml beaker, add the talcum powder of 250 grams, the silica powder of 250 grams and the silicon powder of 250 grams, fully stir evenly, placing vacuum tightness then is that the 0.1MPa vacuum drying oven carries out deaeration in 60 minutes processing, solidifies 48 hours under 10 ℃ of temperature, heats respectively under 90 ℃ and 180 ℃ 1.5 hours respectively at last.
Prepared silicon rubber mould hardness is 30 °, and the pressure that produces that expands when being heated for 130 ℃ is 0.4MPa, is 197 * 10 at 0 ~ 200 ℃ average coefficient of linear expansion
-6/ ℃, Young's modulus is 3.2MPa, and shore hardness is 47, and Poisson's ratio is 0.492, and modulus of volume expansion is 66.7MPa.
Embodiment 2:
Two lauric acid butyl tin of 20 grams are joined in the mixed solution of the vulcanizing agents that contain 350 silicon rubber emulsions that restrain and 80 grams, stirring and placing vacuum tightness is that the 0.12MPa vacuum drying oven carries out deaeration in 57 minutes processing, pour in the 2000ml beaker, add the talcum powder of 110 grams, the silica powder of 165 grams and the silicon powder of 275 grams, fully stir evenly, placing vacuum tightness then is that the 0.12MPa vacuum drying oven carries out deaeration in 57 minutes processing, under 12 ℃ of temperature, solidified 45 hours, under 92 ℃ and 185 ℃, heated respectively 1.4 hours respectively at last.
Prepared silicon rubber mould hardness is 20 °, and the pressure that produces that expands when being heated for 130 ℃ is 0.26MPa, is 203 * 10 at 0 ~ 200 ℃ average coefficient of linear expansion
-6/ ℃, Young's modulus is 8.4MPa, and shore hardness is 59, and Poisson's ratio is 0.484, and modulus of volume expansion is 87.5MPa.
Embodiment 3:
Two lauric acid butyl tin of 15 grams are joined in the mixed solution of the vulcanizing agents that contain 485 silicon rubber emulsions that restrain and 50 grams, stirring and placing vacuum tightness is that the 0.15MPa vacuum drying oven carries out deaeration in 30 minutes processing, pour in the 2000ml beaker, add the talcum powder of 90 grams, the silica powder of 120 grams and the silicon powder of 240 grams, fully stir evenly, placing vacuum tightness then is that the 0.15MPa vacuum drying oven carries out deaeration in 54 minutes processing, under 15 ℃ of temperature, solidified 40 hours, under 95 ℃ and 190 ℃, all heated 1.3 hours respectively at last.
Prepared silicon rubber mould hardness is 26 °, and the pressure that produces that expands when being heated for 130 ℃ is 0.33MPa, is 208 * 10 at 0 ~ 200 ℃ average coefficient of linear expansion
-6/ ℃, Young's modulus is 3.5MPa, and shore hardness is 45, and Poisson's ratio is 0.478, and modulus of volume expansion is 26.5MPa.
Embodiment 4:
Two lauric acid butyl tin of 10 grams are joined in the mixed solution of the vulcanizing agents that contain 650 silicon rubber emulsions that restrain and 40 grams, stirring and placing vacuum tightness is that the 0.13MPa vacuum drying oven carries out deaeration in 45 minutes processing, pour in the 2000ml beaker, add the talcum powder of 100 grams, the silica powder of 100 grams and the silicon powder of 100 grams, fully stir evenly, placing vacuum tightness then is that the 0.13MPa vacuum drying oven carries out deaeration in 45 minutes processing, under 20 ℃ of temperature, solidified 30 hours, under 97 ℃ and 193 ℃, all heated 1.2 hours respectively at last.
Prepared silicon rubber mould hardness is 25 °, and the pressure that produces that expands when being heated for 130 ℃ is 0.47MPa, is 191 * 10 at 0 ~ 200 ℃ average coefficient of linear expansion
-6/ ℃, Young's modulus is 7.8MPa, and shore hardness is 56, and Poisson's ratio is 0.506.
Embodiment 5:
Two lauric acid butyl tin of 20 grams are joined in the mixed solution of the vulcanizing agents that contain 850 silicon rubber emulsions that restrain and 30 grams, stirring and placing vacuum tightness is that the 0.15MPa vacuum drying oven carries out deaeration in 38 minutes processing, pour in the 2000ml beaker, add the talcum powder of 20 grams, the silica powder of 30 grams and the silicon powder of 50 grams, fully stir evenly, placing vacuum tightness then is that the 0.15MPa vacuum drying oven carries out deaeration in 38 minutes processing, under 22 ℃ of temperature, solidified 27 hours, under 98 ℃ and 195 ℃, all heated 1.1 hours respectively at last.
Prepared silicon rubber mould hardness is 34 °, and the pressure that produces that expands when being heated for 130 ℃ is 0.56MPa, is 241 * 10 at 0 ~ 200 ℃ average coefficient of linear expansion
-6/ ℃, Young's modulus is 3.6MPa, and shore hardness is 53, and Poisson's ratio is 0.490, and modulus of volume expansion is 60MPa.
Embodiment 6:
Two lauric acid butyl tin of 20 grams are joined in the mixed solution of the vulcanizing agents that contain 850 silicon rubber emulsions that restrain and 10 grams, stirring and placing vacuum tightness is that the 0.10MPa vacuum drying oven carries out deaeration in 60 minutes processing, pour in the 2000ml beaker, add the talcum powder of 24 grams, the silica powder of 32 grams and the silicon powder of 64 grams, fully stir evenly, placing vacuum tightness then is that the 0.10MPa vacuum drying oven carries out deaeration in 60 minutes processing, under 25 ℃ of temperature, solidified 24 hours, under 100 ℃ and 200 ℃, all heated 1 hour respectively at last.
Prepared silicon rubber mould hardness is 38 °, and the pressure that produces that expands when being heated for 130 ℃ is 0.52MPa, is 166 * 10 at 0 ~ 200 ℃ average coefficient of linear expansion
-6/ ℃, Young's modulus is 9.6MPa, and shore hardness is 67, and Poisson's ratio is 0.475, and modulus of volume expansion is 64MPa.
Claims (10)
1. compound skirt global formation silicon rubber mould, it is characterized in that: described mould is made by following raw materials by weight percent: silicon rubber emulsion 15 ~ 85%, vulcanizing agent 1 ~ 10%, promotor 0 ~ 2%, filler 10 ~ 75%.
2. compound skirt global formation silicon rubber mould according to claim 1, it is characterized in that: described mould is made by following raw materials by weight percent: silicon rubber emulsion 35 ~ 65%, vulcanizing agent 4 ~ 8%, promotor 1 ~ 2%, filler 30 ~ 55%.
3. compound skirt global formation silicon rubber mould according to claim 2, it is characterized in that: described mould is made by following raw materials by weight percent: silicon rubber emulsion 48.5%, vulcanizing agent 5%, promotor 1.5%, filler 45%.
4. according to claim 1 or 2 or 3 described compound skirt global formation silicon rubber moulds, it is characterized in that: described silicon rubber emulsion is a kind of or its combination in methyl-monosilane, ethylene methacrylic base silane, the methyl ethylene phenyl silane.
5. according to claim 1 or 2 or 3 described compound skirt global formation silicon rubber moulds, it is characterized in that: described vulcanizing agent is a tetraethoxy.
6. according to claim 1 or 2 or 3 described compound skirt global formation silicon rubber moulds, it is characterized in that: described promotor is two lauric acid butyl tin.
7. according to claim 1 or 2 or 3 described compound skirt global formation silicon rubber moulds, it is characterized in that: described filler is made up of for 1 ~ 8 part 1 ~ 3 part of talcum powder, 1 ~ 4 part of silica powder, silicon powder by weight.
8. compound skirt global formation silicon rubber mould according to claim 7 is characterized in that: described filler is made up of for 5 parts 2 parts of talcum powder, 3 parts of silica powders, silicon powder by weight.
9. the described compound skirt global formation of a claim 1 may further comprise the steps with the preparation method of silicon rubber mould:
1) takes by weighing the silicon rubber emulsion according to described ratio and vulcanizing agent places beaker, mix, under 10 ~ 25 ℃ temperature condition, put into vacuum drying oven, the unlatching vacuum drying oven reaches the set(ting)value of 0.10 ~ 0.15Mpa to baking oven vacuum tightness, carry out deaeration and handle 30 ~ 60min, treat to take out beaker behind the vacuum drying oven pressure removal to no longer occurring than till the gross blow hole;
2) take by weighing promotor and filler in described ratio, join in silicon rubber emulsion and the vulcanizing agent mixed solution, stir fast, repeating step 1 then) in vacuum defoamation handle;
3) between moulding that the interior molding surface size according to compound skirt designs is with adventitia and rigid mould, inject through step 2) mixed solution handled, solidify 24 ~ 48h, acquisition mantle goods under 10 ~ 25 ℃ temperature condition;
4) under 90 ~ 100 ℃ temperature condition step 3) gained mantle goods are heated 1.0 ~ 1.5h earlier, heating 1.0 ~ 1.5h under 180 ~ 200 ℃ temperature condition removes external mold at last then, obtains described silicon rubber mould.
10. according to the preparation method of the described compound skirt global formation of claim 9 with silicon rubber mould, it is characterized in that: in the described step 3), when temperature was 10 ~ 15 ℃, be 40 ~ 48h set time; When temperature was 20 ~ 25 ℃, be 24 ~ 30h set time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089204.2A CN103214847B (en) | 2013-03-20 | 2013-03-20 | Silicon rubber mold for integral moulding of composite skirt and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089204.2A CN103214847B (en) | 2013-03-20 | 2013-03-20 | Silicon rubber mold for integral moulding of composite skirt and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103214847A true CN103214847A (en) | 2013-07-24 |
| CN103214847B CN103214847B (en) | 2015-05-13 |
Family
ID=48813034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310089204.2A Active CN103214847B (en) | 2013-03-20 | 2013-03-20 | Silicon rubber mold for integral moulding of composite skirt and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103214847B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909658A (en) * | 2014-03-28 | 2014-07-09 | 湖北三江航天江北机械工程有限公司 | Composite material connecting skirt forming method and mold and inner rubber core mold forming mold |
| CN106492716A (en) * | 2016-12-20 | 2017-03-15 | 中国工程物理研究院激光聚变研究中心 | Integral dual milk particle generating meanss and its processing method |
| CN114347320A (en) * | 2022-01-06 | 2022-04-15 | 中国建筑科学研究院有限公司 | Preparation method of silicone rubber mold for resin casting body colloid performance test |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066552A (en) * | 2007-06-11 | 2007-11-07 | 浙江新光饰品有限公司 | Silica gel mold material for casting metal ornament and its application |
| CN102267208A (en) * | 2011-03-18 | 2011-12-07 | 上海奇葩环境科技有限公司 | Preparation method for rubber mold for preparing artificial stone |
-
2013
- 2013-03-20 CN CN201310089204.2A patent/CN103214847B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066552A (en) * | 2007-06-11 | 2007-11-07 | 浙江新光饰品有限公司 | Silica gel mold material for casting metal ornament and its application |
| CN102267208A (en) * | 2011-03-18 | 2011-12-07 | 上海奇葩环境科技有限公司 | Preparation method for rubber mold for preparing artificial stone |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909658A (en) * | 2014-03-28 | 2014-07-09 | 湖北三江航天江北机械工程有限公司 | Composite material connecting skirt forming method and mold and inner rubber core mold forming mold |
| CN106492716A (en) * | 2016-12-20 | 2017-03-15 | 中国工程物理研究院激光聚变研究中心 | Integral dual milk particle generating meanss and its processing method |
| CN106492716B (en) * | 2016-12-20 | 2024-01-30 | 中国工程物理研究院激光聚变研究中心 | Integrated double-emulsion particle generating device and processing method thereof |
| CN114347320A (en) * | 2022-01-06 | 2022-04-15 | 中国建筑科学研究院有限公司 | Preparation method of silicone rubber mold for resin casting body colloid performance test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103214847B (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102501357B (en) | Polymer/foamed aluminium composite material and production method thereof | |
| CN103434141B (en) | The forming method of the box-like reinforced structure of a kind of carbon fibre composite | |
| CN100368185C (en) | Quick RTM manufacturing process of resin based advanced composite material | |
| CN102010149B (en) | Water-soluble mould and preparation method thereof and method for forming composite material | |
| CN106977927B (en) | High-strength addition type liquid silicone rubber impregnation liquid and preparation and forming methods thereof | |
| CN103407172B (en) | A kind of high efficiency integral forming method of fiber-reinforced resin matrix compound material T connector | |
| CN106182814A (en) | A kind of manufacture method of composite wheel hub | |
| WO2018222714A1 (en) | Single-phase solution molding | |
| CN103214847B (en) | Silicon rubber mold for integral moulding of composite skirt and preparation method | |
| CN104015376A (en) | Mixing and forming method of carbon fiber composite material | |
| CN105669920A (en) | Low-shrinkage unsaturated polyester resin and fiber-glass-reinforced board prepared from resin | |
| CN100575421C (en) | The hot bismaleimides of high moisture-proof/microcapsule matrix material and preparation method thereof | |
| CN109397724B (en) | High-temperature-resistant composite material and high-temperature thermal expansion forming method thereof | |
| CN102371650A (en) | Preparation method for high-strength composite cable holder | |
| CN107383665A (en) | A kind of low water rate solid buoyancy material and preparation method thereof | |
| CN108864995B (en) | Multi-axial composite material bent pipe and preparation method thereof | |
| CN110142911A (en) | The injection molding apparatus and technique of a kind of polymer micro foamed material and its application | |
| CN104031358A (en) | Unsaturated resin fiberglass prepreg for low-temperature low-pressure molding as well as preparation method and application of unsaturated resin fiberglass prepreg | |
| CN110054801A (en) | A kind of preparation method of lightweight polypropylene material | |
| CN105542471A (en) | Release-type high-energy adhesive product and preparation method thereof | |
| CN105694453B (en) | A kind of phthalonitrile composite material cable cover and preparation method thereof | |
| CN104494165A (en) | Semi-soft die used for assisting racing boat moulding and one shot forming technology for racing boat | |
| CN102990881A (en) | Water-assisted injection molding process method | |
| CN209785661U (en) | Composite disc insulator with new structure | |
| US9643343B2 (en) | Method for molding recycled EPS using powder adhesive and steam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170714 Address after: 431400 Hubei province Wuhan Honggang village in Xinzhou District of Yangluo Economic Development Zone, Yangluo Development Zone, five floor, room 504 Patentee after: Aerospace Science and engineering Rocket Technology Co., Ltd. Address before: 432000 Hubei city of Xiaogan province Beijing Road No. 6 Patentee before: Hubei Sanjiang Aerospace Jiangbei Machinery Engineering Co., Ltd. |
|
| TR01 | Transfer of patent right |