CN106589959A - Ultralow-density silicone rubber foam material and preparation method thereof - Google Patents
Ultralow-density silicone rubber foam material and preparation method thereof Download PDFInfo
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 39
- 239000006261 foam material Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004945 silicone rubber Substances 0.000 title abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000004088 foaming agent Substances 0.000 claims abstract description 16
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 16
- 229920000260 silastic Polymers 0.000 claims description 23
- 239000012752 auxiliary agent Substances 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 15
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 6
- 150000002832 nitroso derivatives Chemical group 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- BWHOZHOGCMHOBV-BQYQJAHWSA-N trans-benzylideneacetone Chemical compound CC(=O)\C=C\C1=CC=CC=C1 BWHOZHOGCMHOBV-BQYQJAHWSA-N 0.000 claims description 6
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 claims description 5
- LPNAMETTXPBZIZ-UHFFFAOYSA-N dodecanoic acid;urea Chemical compound NC(N)=O.CCCCCCCCCCCC(O)=O LPNAMETTXPBZIZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- -1 methyl ethylene Alkane Chemical class 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- PQPVPZTVJLXQAS-UHFFFAOYSA-N hydroxy-methyl-phenylsilicon Chemical group C[Si](O)C1=CC=CC=C1 PQPVPZTVJLXQAS-UHFFFAOYSA-N 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims 1
- 239000006260 foam Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 210000000497 foam cell Anatomy 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 abstract 2
- 239000003292 glue Substances 0.000 description 14
- 229920002545 silicone oil Polymers 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 210000003850 cellular structure Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
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Abstract
The invention belongs to the technical field of high-temperature silicone rubber foaming and relates to an ultralow-density silicone rubber foam material and a preparation method thereof. The ultralow-density silicone rubber foam material is prepared from, by weight, 300.0 parts of raw silicone rubber, 63.0-75.0 parts of a foaming agent, 12.0-24.0 parts of a foaming aid, 240.0-270.0 parts of a reinforcing agent, 48.0-60.0 parts of an anti-structuring aid, 13.0-25.0% of a vulcanizing agent, and 0.3-6.0 parts of an accelerant. The ultralow-density foam structure with uniform foam cell structure is prepared through certain preparation method, the foam material prepared has low density, and the processing technique is simple and easy to implement.
Description
Technical field
The present invention relates to silicon rubber foam material, and in particular to a kind of extremely-low density silicon rubber foam material and preparation method thereof.
Background technology
Silicon rubber foam material is the foamed material of a kind of collection foamed material and silicon rubber excellent properties and one, with preferable resistant of high or low temperature, moisture resistance,
Physiological inertia, resistance to ag(e)ing, electrical insulating property etc., in the industry such as Aero-Space, electronic apparatus, building, traffic, medical valency is had a wide range of applications
Value.But the density of current high temperature silicone rubber foamed material is higher, and product density, mainly in this interval of 0.5～0.8g/cm3, density is too high,
Such as it is restricted in the Aero-Space sector application higher to light-weight requirements.
The content of the invention
The purpose of the present invention is to prepare a kind of stable silicon rubber foam material of low density cellular structures.Using methyl ethylene silica gel, silica,
Hyd roxymethyl phenyl silicone oil, nitroso compound, urea derivative, peroxide vulcanizing agent, nano titanium oxide etc., coordinated by rational and
Its processing technology is adjusted, a kind of extremely-low density silicon rubber foam material has been prepared, density as little as 0.134g/cm3, gained foam cell is uniform, and
Low to process equipment requirement and processing technology is simple, existing equipment can realize completely production.
In order to realize above-mentioned technical purpose, the technical scheme for being adopted is as follows：
A kind of extremely-low density silicon rubber foam material, is made up of the raw material of following mass fraction：
300.0 parts of raw-silastic continuously；
63.0～75.0 parts of foaming agent；
12.0～24.0 parts of blowing promotor；
240.0～270.0 parts of reinforcing agent；
48.0～60.0 parts of anti-structuring auxiliary agent,；
13.0～25.0 parts of vulcanizing agent；
Accelerator 0.3-6.0 parts；
Wherein, the raw-silastic continuously be methylvinyl-polysiloxane, contents of ethylene is 0.06%, molecular weight be 500,000 (referred to as glue I) and
Contents of ethylene is 0.21%, and molecular weight is two kinds of 500,000 (referred to as glue II).
Wherein, the foaming agent is nitroso compound.
Wherein, blowing promotor used is urea dodecanoate.
Wherein, the reinforcing agent is：Nano silicon, particle diameter is 85 ± 5nm.
Wherein, the anti-structuring auxiliary agent is hyd roxymethyl phenyl silicone oil, and viscosity is 200-250mpa.s, and hydroxy radical content is 4-6%；
Wherein, the vulcanizing agent includes：Double (t-butylperoxyisopropyl) benzene (BIBP), the peroxidating 2 ethyl hexanoic acid tert-butyl ester (TPBO).
Wherein, the accelerator is nano titanium oxide, and particle diameter is 70 ± 10nm.
It is an object of the invention to provide method is sent out in a kind of preparation of extremely-low density silicon rubber foam material.
Method is sent out in a kind of preparation of extremely-low density silicon rubber foam material, and its preparation method is as follows：
(1) by 150.0 parts of raw-silastic continuously, 240.0～270.0 parts of reinforcing agent, 24.0～30.0 parts of anti-structuring auxiliary agent is blended in banbury
5～15 minutes, then 5～15 double-dealing and triangle bags are made a call on a mill, to bottom sheet is well mixed, park 2 hours for 180 DEG C in baking oven, cool down
To room temperature, 24 hours are parked, referred to as component A；
(2) by 150.0 parts of raw-silastic continuously, 24.0～30.0 parts of anti-structuring auxiliary agent, 63.0～75.0 parts of foaming agent, blowing promotor 12.0～24.0
Part, accelerator 0.3-6.0 parts are blended 5～15 minutes in banbury, then make a call to 5～15 double-dealing and triangle bags on a mill, extremely mixed
Close uniform, film, referred to as B component is obtained；
(3) component A, B component, 13.0～25.0 parts of vulcanizing agent are sequentially added on a mill, and 40 DEG C or so are beaten double-dealing and triangle bag 20～30
Secondary, to being well mixed, bottom sheet is obtained film C；
(4) film C is placed on vulcanizing press, 130 DEG C of one step cure 10-15 minutes, 160 DEG C to 180 DEG C post vulcanization 30-90 of baking oven
Minute, that is, extremely-low density silicon rubber foam material is obtained.
Specific embodiment
Some specific embodiments of the present invention presented below, to help the understanding of the present invention, but protection scope of the present invention is not limited to this.
Embodiment 1
A kind of extremely-low density silicon rubber foam material, is prepared by the raw material of following mass fraction：
300.0 parts of raw-silastic continuously；
63.0 parts of foaming agent；
12.0 parts of blowing promotor；
240.0 parts of reinforcing agent；
48.0 parts of anti-structuring auxiliary agent；
13.0 parts of vulcanizing agent；
0.3 part of accelerator；
The raw-silastic continuously is methylvinyl-polysiloxane, and contents of ethylene is 0.06%, and molecular weight is that 500,000 (referred to as glue I) and vinyl contain
Measure as 0.21%, molecular weight is two kinds of 500,000 (referred to as glue II).
Wherein, raw-silastic continuously is that glue I is 100 parts, and glue II is 200 parts of compositions；
Wherein, foaming agent is nitroso compound, can be N, N- dinitrosopentamethylene tetramines, and N, N ' -2- dimethyl -2-N, N ' -2-
Dinitrosoterephthalamine；
Wherein, blowing promotor is urea dodecanoate；
Wherein, reinforcing agent is nano silicon, and particle diameter is 85 ± 5nm；
Wherein, anti-structuring auxiliary agent is hyd roxymethyl phenyl silicone oil, and viscosity is 200-250mpa.s, and hydroxy radical content is 4-6%；
Wherein, vulcanizing agent mixing for double (t-butylperoxyisopropyl) benzene (BIBP) and the peroxidating 2 ethyl hexanoic acid tert-butyl ester (TPBO)
Compound, its ratio is 1: 1；
Wherein, accelerator is nano titanium oxide, and particle diameter is 70 ± 10nm.
A kind of preparation method of extremely-low density silicon rubber foam material is：
(1) by 150.0 parts of raw-silastic continuously, 240.0 parts of reinforcing agent, 24.0 parts of anti-structuring auxiliary agent is blended 5 minutes in banbury, then
5 double-dealing and triangle bags are made a call in mill, to bottom sheet is well mixed, is parked 2 hours for 180 DEG C in baking oven, be cooled to room temperature, park 24 little
When, referred to as component A；
(2) by 150.0 parts of raw-silastic continuously, 24.0 parts of anti-structuring auxiliary agent, 63.0 parts of foaming agent；12.0 parts of blowing promotor, accelerator 0.3
Part, it is blended 5 minutes in banbury, then make a call to 5 double-dealing and triangle bags on a mill, to being well mixed bottom sheet, referred to as B component；
(3) component A, B component, 3.0 parts of vulcanizing agent are sequentially added on a mill, 40 DEG C or so are beaten double-dealing and triangle bag 20 times, extremely
It is well mixed, bottom sheet, film C is obtained；
(4) by film C on vulcanizing press, 130 DEG C of one step cures 5 minutes, 160 DEG C of baking oven post vulcanization 30 minutes is obtained ultralow
Density silicon rubber foam material.
Obtained extremely-low density silicon rubber foam, its density is 0.189g/cm3.
Embodiment 2
A kind of extremely-low density silicon rubber foam material, is prepared by the raw material of following mass fraction：
300.0 parts of raw-silastic continuously；
75.0 parts of foaming agent；
24.0 parts of blowing promotor；
270.0 parts of reinforcing agent；
60.0 parts of anti-structuring auxiliary agent,；
25.0 parts of vulcanizing agent；
6.0 parts of accelerator；
The raw-silastic continuously is methylvinyl-polysiloxane, and contents of ethylene is 0.06%, and molecular weight is 500,000 (referred to as glue I) and vinyl
Content is 0.21%, and molecular weight is two kinds of 500,000 (referred to as glue II).
Wherein, raw-silastic continuously is that glue I is 200.0 parts, and glue II is 100.0 parts of compositions；
Wherein, foaming agent is nitroso compound, can be N, N- dinitrosopentamethylene tetramines, and N, N ' -2- dimethyl -2-N, N ' -2-
Dinitrosoterephthalamine；
Wherein, blowing promotor is urea dodecanoate；
Wherein, reinforcing agent is nano silicon, and particle diameter is 85 ± 5nm；
Wherein, anti-structuring auxiliary agent is hyd roxymethyl phenyl silicone oil, and viscosity is 200-250mpa.s, and hydroxy radical content is 4-6%；
Wherein, vulcanizing agent is double (t-butylperoxyisopropyl) benzene (BIBP) and the peroxidating 2 ethyl hexanoic acid tert-butyl ester (TPBO), its ratio
Example is 2: 1；
Wherein, accelerator is nano titanium oxide, and particle diameter is 70 ± 10nm；
A kind of preparation method of extremely-low density silicon rubber foam material is：
(1) by 150.0 parts of raw-silastic continuously, 270.0 parts of reinforcing agent, 30.0 parts of anti-structuring auxiliary agent is blended 15 minutes in banbury, then
15 double-dealing and triangle bags are made a call in mill, to bottom sheet is well mixed, is parked 2 hours for 180 DEG C in baking oven, be cooled to room temperature, park 24
Hour, referred to as component A；
(2) by 150.0 parts of raw-silastic continuously, 30.0 parts of anti-structuring auxiliary agent, 75.0 parts of foaming agent, 24.0 parts of blowing promotor, accelerator 6.0
Part, it is blended 15 minutes in banbury, then make a call to 15 double-dealing and triangle bags on a mill, to being well mixed bottom sheet, referred to as B component；
(3) component A, B component, vulcanizing agent are sequentially added on a mill, 40 DEG C or so are beaten double-dealing and triangle bag 30 times, equal to mixing
Even, bottom sheet is obtained film C；
(4) by film C on vulcanizing press, 130 DEG C of one step cures 15 minutes, 180 DEG C of baking oven post vulcanization 90 minutes is obtained super
Low-density silicon rubber foam material.
Obtained extremely-low density silicon rubber foam, its density is 0.134g/cm3.
Embodiment 3
A kind of extremely-low density silicon rubber foam material, is prepared by the raw material of following mass fraction：
300.0 parts of raw-silastic continuously；
70.0 parts of foaming agent；
18.0 parts of blowing promotor；
260.0 parts of reinforcing agent；
56.0 parts of anti-structuring auxiliary agent；
20.0 parts of vulcanizing agent；
3.0 parts of accelerator；
The raw-silastic continuously is methylvinyl-polysiloxane, and contents of ethylene is 0.06%, and molecular weight is 500,000 (referred to as glue I) and vinyl
Content is 0.21%, and molecular weight is two kinds of 500,000 (referred to as glue II).
Wherein, raw-silastic continuously is that glue I is 150.0 parts, and glue II is 150.0 parts of compositions；
Wherein, foaming agent is nitroso compound, can be N, N- dinitrosopentamethylene tetramines, and N, N ' -2- dimethyl -2-N, N ' -2-
Dinitrosoterephthalamine；
Wherein, blowing promotor is urea lauric acid/dodecanoic acid fat；
Wherein, reinforcing agent is nano silicon, and particle diameter is 85 ± 5nm；
Wherein, anti-structuring auxiliary agent is hyd roxymethyl phenyl silicone oil, and viscosity is 200-250mpa.s, and hydroxy radical content is 4-6%；
Wherein, vulcanizing agent is double (t-butylperoxyisopropyl) benzene (BIBP) and the peroxidating 2 ethyl hexanoic acid tert-butyl ester (TPBO), ratio
For 1: 2；
Wherein, accelerator is nano titanium oxide, and particle diameter is 70 ± 10nm.
A kind of preparation method of extremely-low density silicon rubber foam material is：
(1) by 150.0 parts of raw-silastic continuously, 260.0 parts of reinforcing agent, 28.0 parts of anti-structuring auxiliary agent is blended 10 minutes in banbury, then
10 double-dealing and triangle bags are made a call on a mill, to bottom sheet is well mixed, is parked 2 hours for 180 DEG C in baking oven, be cooled to room temperature, park 2
4 hours, referred to as component A；
(2) by 150.0 parts of raw-silastic continuously, 28.0 parts of anti-structuring auxiliary agent, 70.0 parts of foaming agent, 18.0 parts of blowing promotor, accelerator 3.0
Part, it is blended 10 minutes in banbury, then make a call to 10 double-dealing and triangle bags on a mill, to being well mixed bottom sheet, referred to as B groups
Part；
(3) component A, B component, vulcanizing agent are sequentially added on a mill, 40 DEG C or so are beaten double-dealing and triangle bag 25 times, equal to mixing
Even, bottom sheet is obtained film C.
(4) film C is weaved on vulcanizing press, 130 DEG C of one step cures 10 minutes, 170 DEG C of baking oven post vulcanization 60 minutes, i.e.,
Prepared extremely-low density silicon rubber foam material.
Obtained extremely-low density silicon rubber foam, its density is 0.159g/cm3
Above example is the preferred embodiment of the present invention, but embodiments of the present invention are not limited by above-mentioned several embodiments.Therefore it is all in present aspect
In the range of any modification for being made and supplement, within protection scope of the present invention.
Claims (9)
1. a kind of extremely-low density silicon rubber foam material, it is characterised in that be made up of the raw material of following mass fraction：
300.0 parts of raw-silastic continuously；63.0～75.0 parts of foaming agent；12.0～24.0 parts of blowing promotor；240.0～270.0 parts of reinforcing agent；Anti- structuring auxiliary agent
48.0～60.0 parts；13.0～25.0 parts of vulcanizing agent；Accelerator 0.3-6.0 parts.
2. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：The raw-silastic continuously is the poly- silica of methyl ethylene
Alkane, contents of ethylene is 0.06%, and molecular weight is 500,000 and contents of ethylene is 0.21%, and molecular weight is 500,000 two kinds of mixture.
3. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：The foaming agent is nitroso compound.
4. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：Blowing promotor used is urea dodecanoate.
5. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：The reinforcing agent be nano silicon, particle diameter
For 85 ± 5nm.
6. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：The anti-structuring auxiliary agent is hyd roxymethyl phenyl silicon
Oil, viscosity is 200-250mpa.s, and hydroxy radical content is 4-6%.
7. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：The vulcanizing agent is peroxidating 2 ethyl hexanoic acid uncle
Butyl ester (TPBO) or double (t-butylperoxyisopropyl) benzene (BIBP) or the peroxidating 2 ethyl hexanoic acid tert-butyl ester (TPBO) and double (uncles
Butyl peroxy isopropyl) benzene (BIBP) mixture.
8. a kind of extremely-low density silicon rubber foam material according to claim 1, is characterized in that：The accelerator be nano titanium oxide, particle diameter
For 70 ± 10nm.
9. a kind of preparation method of extremely-low density silicon rubber foam material, is characterized in that：
(1) by 150.0 parts of raw-silastic continuously, 240.0～270.0 parts of reinforcing agent, 24.0～30.0 parts of anti-structuring auxiliary agent is blended 5～15 in banbury
Minute, then 5～15 double-dealing and triangle bags are made a call on a mill, and to bottom sheet is well mixed, park 2 hours for 180 DEG C in baking oven, it is cooled to room
Temperature, parks 24 hours, and component A is obtained；
(2) by 150.0 parts of raw-silastic continuously, 24.0～30.0 parts of anti-structuring auxiliary agent, 63.0～75.0 parts of foaming agent, 12.0～24.0 parts of blowing promotor,
Accelerator 0.3-6.0 parts, are blended 5～15 minutes in banbury, then make a call to 5～15 double-dealing and triangle bags on a mill, to being well mixed
Bottom sheet, is obtained B component；
(3) component A, B component, 13.0～25.0 parts of vulcanizing agent are sequentially added on a mill, 40 DEG C are beaten double-dealing and triangle bag 20～30 times, extremely
It is well mixed, film C is obtained；
(4) film C is placed on vulcanizing press, 130 DEG C of one step cure 10-15 minutes, in 160 DEG C of -180 DEG C of baking ovens, post vulcanization 30-90 point
Clock, that is, be obtained extremely-low density silicon rubber foam material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114958006A (en) * | 2022-07-14 | 2022-08-30 | 歌尔股份有限公司 | Solid silica gel, silica gel part and electronic equipment |
| CN115079417A (en) * | 2022-07-14 | 2022-09-20 | 歌尔股份有限公司 | Soft rubber part and electronic equipment |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114958006A (en) * | 2022-07-14 | 2022-08-30 | 歌尔股份有限公司 | Solid silica gel, silica gel part and electronic equipment |
| CN115079417A (en) * | 2022-07-14 | 2022-09-20 | 歌尔股份有限公司 | Soft rubber part and electronic equipment |
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Application publication date: 20170426 |