CN101775221B - Heat curing silicone rubber crosslinked with polyamine compound and preparation method thereof - Google Patents
Heat curing silicone rubber crosslinked with polyamine compound and preparation method thereof Download PDFInfo
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- CN101775221B CN101775221B CN2010100118448A CN201010011844A CN101775221B CN 101775221 B CN101775221 B CN 101775221B CN 2010100118448 A CN2010100118448 A CN 2010100118448A CN 201010011844 A CN201010011844 A CN 201010011844A CN 101775221 B CN101775221 B CN 101775221B
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- chloropropyl
- silicone rubber
- hot
- methyl
- vulcanized silicone
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 34
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 32
- 229920000768 polyamine Polymers 0.000 title claims abstract description 25
- 150000001875 compounds Chemical class 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000013007 heat curing Methods 0.000 title abstract 4
- -1 chloropropyl methyl Chemical group 0.000 claims abstract description 55
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002253 acid Substances 0.000 claims abstract description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 10
- 239000011787 zinc oxide Substances 0.000 claims abstract description 6
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920000260 silastic Polymers 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- WSPOQKCOERDWJQ-UHFFFAOYSA-N 2-methyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound C[SiH]1O[SiH2]O[SiH2]O[SiH2]O1 WSPOQKCOERDWJQ-UHFFFAOYSA-N 0.000 claims description 7
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Substances [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 6
- KEZMLECYELSZDC-UHFFFAOYSA-N 3-chloropropyl-diethoxy-methylsilane Chemical compound CCO[Si](C)(OCC)CCCCl KEZMLECYELSZDC-UHFFFAOYSA-N 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 3
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 2
- 238000007151 ring opening polymerisation reaction Methods 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 2
- 229960001124 trientine Drugs 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000006229 carbon black Substances 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000001723 curing Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000012779 reinforcing material Substances 0.000 abstract 1
- 229910000077 silane Inorganic materials 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000004132 cross linking Methods 0.000 description 12
- 229920001971 elastomer Polymers 0.000 description 12
- 239000003292 glue Substances 0.000 description 12
- 239000005060 rubber Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000010792 warming Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 238000005486 sulfidation Methods 0.000 description 3
- 238000005987 sulfurization reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 description 1
- 241000024287 Areas Species 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 206010023126 Jaundice Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 229920001558 organosilicon polymer Polymers 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses heat curing silicone rubber crosslinked with a polyamine compound and a preparation method thereof. The preparation method comprises the following steps of: cohydrolyzing dimethyldiethoxysilane and chloropropyl-methyl-2-silane to obtain chloropropyl-7-central-4-methyl siloxane; cohydrolyzing the chloropropyl-7-central-4-methyl siloxane and 8-central-4-methyl siloxane to obtain chloropropyl methyl polysiloxane; using the chloropropyl methyl polysiloxane as a based adhesive, polyamines as a coupler, a gas-phase-method white carbon black as a reinforcing material and zinc oxide as an acid absorbent; and preparing by heat curing. The heat curing silicone rubber of the invention not only has excellent mechanical properties, but also overcomes some defects of a traditional curing system and has favorable economic benefits and popularization application values.
Description
Technical field
The present invention relates to a kind of hot-vulcanized silicone rubber and preparation method thereof; Relate in particular to a kind of synthetic preparation that reaches with the crosslinked hot-vulcanized silicone rubber of polyamine compounds of chloropropyl methyl polysiloxane; Particularly relate to and utilize novel vulcanization reaction system to prepare the high-strength hot sulphurated siliastic, belong to the rubber manufacture technology field.
Background technology
Organosilicon polymer is first element polymer that in industry, obtains application, and it has good dielectricity and high thermal resistance, surfactivity, biocompatibility, highly air-permeable and hydrophobic nature.Since the forties commercialization, got more and more people's extensive concerning.
Zylox is one of most important organosilicon product, and it is to be that main chain, side group are that the ZGK 5 of organic groups such as methyl, vinyl, phenyl is that basic glue makes with Si-O-Si.The bond energy of siliconoxygen bond is 450kJ/mol, and is more much bigger than the carbon carbon combination bond energy (242kJ/mol) of ordinary rubber.Zylox has the not available peculiar property of some other rubber.Like excellent characteristic such as high-low temperature resistant, ultraviolet resistance, radiation hardness, weathering resistance, electrical isolation.Thereby all obtained application widely in fields such as space flight and aviation, electric, light industry, chemical industry, weaving, machinery, building, traffic, national defence, the energy, medicine medical treatment, agriculturals.
Zylox is since nineteen forties occurs, and its production researchdevelopment is rapid, has formed the important industry of hot sulfurization and self cure two big series, up to ten thousand kinds.The research emphasis of hot-vulcanized silicone rubber mainly concentrates on and how to improve synthesis technique and prepare high performance Zylox in recent years, and improves aspects such as physical strength and specific function.More than research all is to be the basis with existing peroxide cross-linking system and the addition-crosslinked system of silicon hydrogen, but these two kinds of traditional cross-linking systems all exist the shortcoming that some are difficult to overcome self.
Peroxide cross-linking system is the vulcanization of first kind of success in the Zylox system, and by Weight and Oliver at first invention in U.S. Pat 2448565, they utilize Lucidol to obtain effectively crosslinked dimethyl silicone rubber.The heat cross-linking reaction that causes through superoxide can obtain intensity cross-linked rubber preferably.Peroxide cross-linking system is used the most extensive in present Zylox industrial production, but the degradation production of this cross-linking system initiator often is difficult to eliminate, and is retained in the performance that influences rubber in the glue; Resulting cross-linking system is random structure, and because some filler can absorb radical retardance sulfidation, so this vulcanization is difficult to prove effective under some occasion.
Find since later 1940s to be applied to soon on the crosslinking reaction of Zylox since the coordination catalysis addition reaction of addition reaction of silicon with hydrogen, particularly platinum complex.The addition-crosslinked system of silicon hydrogen becomes other a kind of vulcanization system commonly used in the hot-vulcanized silicone rubber industrial production; But addition-crosslinked process need is made addition catalyst with precious metal, and reaction can't be reclaimed after finishing, and remains in the cross-linked rubber; Can damage the cross-linking system of cross-linked rubber under certain condition; The trace platinum catalyzer of crosslinked usefulness is very sensitive to impurity, can form the compound of dentate with platinum like sulphur, phosphorus, nitrogen etc., very easily makes catalyzer " poisoning ", and then loses catalytic activity.
Traditional cross-linking system based on hot-vulcanized silicone rubber exists shortcoming at present, is badly in need of novel cross-linking vulcanized system and emerges, and therefore developing a kind of novel silicone rubber crosslinking system prepares hot-vulcanized silicone rubber, has good Research Significance and application prospect.
Summary of the invention
The objective of the invention is to prepare a kind of chloropropyl methyl polysiloxane; And its basic glue as novel vulcanization reaction system prepared the crosslinked hot-vulcanized silicone rubber of HS polyamine compounds; Such Zylox not only has good mechanical property; And need not use any catalyzer, the small molecular weight impurity that produces in the sulfidation is easy to overflow, and can overcome the deficiency that traditional vulcanization system brings.
The hot-vulcanized silicone rubber that polyamine compounds according to the invention is crosslinked is mixed and made into by raw-silastic continuously, thermal silica, linking agent and acid absorber; It is characterized in that: the weight part of said hot-vulcanized silicone rubber each component is: 100 parts of raw-silastic continuouslies, thermal silica 40-70 part, linking agent 0.1-2.0 part, acid absorber 0.5-5.0 part;
Wherein: above-mentioned raw-silastic continuously is the chloropropyl methyl polysiloxane of molecular weight 50 ± 50,000, and the molar content of its chloropropyl is at 0.05%-0.30%; Above-mentioned thermal silica is commercially available thermal silica; Above-mentioned linking agent is a polyamine compounds; Above-mentioned acid absorber is a zinc oxide.
Further, the weight part of above-mentioned hot-vulcanized silicone rubber each component is preferably: 0.5 part of 100 parts of raw-silastic continuously, 50 parts of thermal silicas, linking agent 0.15-0.6 part, acid absorber.
In the component of the hot-vulcanized silicone rubber that above-mentioned polyamine compounds is crosslinked: said chloropropyl methyl polysiloxane is to obtain chloropropyl seven methyl cyclotetrasiloxane (D through dimethyldiethoxysilane and chloropropyl methyldiethoxysilane cohydrolysis
3D
C3H6Cl), chloropropyl seven methyl cyclotetrasiloxanes again with octamethylcyclotetrasiloxane (D
4) ring-opening copolymerization obtains under catalyst action; Wherein said catalyzer is the TMAH silicon alkoxide.
Concrete preparation method is: in four-hole bottle, add toluene and hydrochloric acid; Then under ice-water bath, agitation condition; Slowly drip γ-chloropropyl methyldiethoxysilane and dimethyldiethoxysilane mixed solution; Keep temperature of reaction system below 20 ℃, dropwise and under this temperature, continue to stir post-heating backflow in 1.5 hours, kept 3 hours.Product removes the disacidify layer, and washing is to neutrality, CaCl
2The dry placement spent the night, and boils off toluene, and 110 ℃ of-140 ℃ of cuts are collected in underpressure distillation under 2.66KPa, obtain chloropropyl seven methyl cyclotetrasiloxane (D
3D
C3H6Cl).
Is being furnished with N
2Add a certain amount of D in the U type bottle of conduit, TM and still head
4, D
3D
C3H6ClWith appropriate bases glue (TMAH silicon alkoxide), logical N
2, slowly heating, alkali glue all after the dissolving, is warming up to 70 ℃, keeps 0.5 hour, continue to heat up, 90 ℃-110 ℃ following balance 6-7 hour.Reaction finishes, and temperature is risen to about 150 ℃, keeps 0.5 hour.Under vacuum condition, be warming up to about 180 ℃ at last, deviate from low-boiling-point substance and obtain the chloropropyl ZGK 5.
In the component of the hot-vulcanized silicone rubber that above-mentioned polyamine compounds is crosslinked: said polyamine compounds is TEPA, triethylene tetramine or aminopropyl silicone oil.
In the component of the hot-vulcanized silicone rubber that above-mentioned polyamine compounds is crosslinked: the TS530 that the preferred U.S. of said thermal silica Cabot Co.,Ltd produces.
The preparation method of the hot-vulcanized silicone rubber that polyamine compounds according to the invention is crosslinked is characterized in that: 100 parts of raw-silastic continuouslies, thermal silica 40-70 part, the acid absorber 0.5-5.0 part of getting group component with weight part score another name; After the mixing at room temperature mixing 20-40 minute; Then with the material after mixing under 150-180 ℃ of temperature thermal treatment 1-4 hour; Then with its cool to room temperature; Adding linking agent 0.1-2.0 part also mixes, and molded vulcanization under 140-180 ℃ of temperature promptly obtains the crosslinked hot-vulcanized silicone rubber of polyamine compounds subsequently.
If the chloropropyl content in the chloropropyl methyl silicone rubber among the present invention is too high, the sour gas that can cause overflowing in the hot sulfurization process is too much, influences the mechanical property of Zylox; If content is low excessively, silicon rubber vulcanization weak effect then.So its chloropropyl molar content is at 0.05-0.30%.The molecular weight of chloropropyl methyl polysiloxane is relevant with the overall mechanical properties of rubber, and molecular weight is 50 ± 50,000.
Linking agent among the present invention is a polyamine compounds, can improve the tear strength and the over-all properties of rubber.Consumption too much can cause excessively crosslinked, the Zylox jaundice; Consumption is very few, and then vulcanization of rubber degree is low.
Thermal silica among the present invention is a supporting material, if the thermal silica consumption too much can cause the big elasticity of rubber hardness to reduce, consumption crosses that I haven't seen you for ages causes rubber hardness little, does not reach best reinforcing effect.
Acid absorber among the present invention is a zinc oxide.Consumption too much can cause caoutchouc elasticity to reduce, and consumption is crossed and do not reached the purpose that absorbs the sour gas that vulcanization reaction overflows at least, so the weight fraction of its preferable materials is 0.5-5.0 part.
The present invention is to be basic glue with the chloropropyl methyl polysiloxane, and polyamines is a linking agent, and thermal silica is a supporting material, and zinc oxide is the novel vulcanization system of acid absorber, processes the novel hot-vulcanized silicone rubber of excellent property through hot sulfurization.The Zylox of this vulcanization system preparation has overcome the some shortcomings of traditional vulcanization system, and small molecule by-product is overflowed easily in the sulfidation, and without any need for catalyzer, obtains silastic product and have good mechanical mechanics property.The present invention has good economic benefit and promotional value.
Embodiment
Embodiment 1
In being furnished with the 250ml four-hole bottle of whisking appliance, tap funnel, reflux condensing tube and TM, add 70ml toluene; 36ml zero(ppm) water and 34ml concentrated hydrochloric acid; Under ice-water bath, agitation condition, slowly drip 10.6g γ-chloropropyl methyldiethoxysilane and 22.2g dimethyldiethoxysilane mixed solution then, keep temperature of reaction system below 20 ℃; Dropwise and under this temperature, continue to stir after 1.5 hours, reflux was kept 3 hours.Product removes the disacidify layer, and washing is to neutrality, CaCl
2After dry placement is spent the night, get colourless transparent solution.After boiling off toluene, underpressure distillation under 2.66KPa is collected 110 ℃ of-140 ℃ of cuts and is obtained chloropropyl seven methyl cyclotetrasiloxane (D
3D
C3H6Cl).
Embodiment 2
Is being furnished with N
2Add 241.20g octamethylcyclotetrasiloxane (D in the U type bottle of conduit, TM and still head
4), 2g chloropropyl seven methyl cyclotetrasiloxane (D
3D
C3H6Cl) and appropriate bases glue (TMAH silicon alkoxide), logical N
2Bubbling, slowly heating, alkali glue all after the dissolving, is warming up to 70 ℃, keeps 0.5 hour, continue to heat up, 90 ℃-110 ℃ following balance 6-7 hour.Reaction finishes, and temperature is risen to about 150 ℃, keeps 0.5 hour.Under vacuum condition, be warming up to about 180 ℃ at last, deviate from low-boiling-point substance and obtain chloropropyl ZGK 5 (chloropropyl content 0.17%mol).
Embodiment 3
Is being furnished with N
2Add 206.00g D in the U type bottle of conduit, TM and still head
4, 0.5g D
3D
C3H6ClWith appropriate bases glue (TMAH silicon alkoxide), logical N
2Bubbling, slowly heating, alkali glue all after the dissolving, is warming up to 70 ℃, keeps 0.5 hour, continue to heat up, 90 ℃-110 ℃ following balance 6-7 hour.Reaction finishes, and temperature is risen to about 150 ℃, keeps 0.5 hour.Under vacuum condition, be warming up to about 180 ℃ at last, deviate from low-boiling-point substance and obtain chloropropyl ZGK 5 (chloropropyl content 0.05%mol).
Embodiment 4
Is being furnished with N
2Add 203.94g D in the U type bottle of conduit, TM and still head
4, 3.0g D
3D
C3H6ClWith appropriate bases glue (TMAH silicon alkoxide), logical N
2Bubbling, slowly heating, alkali glue all after the dissolving, is warming up to 70 ℃, keeps 0.5 hour, continue to heat up, 90 ℃-110 ℃ following balance 6-7 hour.Reaction finishes, and temperature is risen to about 150 ℃, keeps 0.5 hour.Under vacuum condition, be warming up to about 180 ℃ at last, deviate from low-boiling-point substance and obtain chloropropyl ZGK 5 (chloropropyl content 0.30%mol).
Embodiment 5
With raw-silastic continuously (chloropropyl ZGK 5; Kilogram), 0.5 part of acid absorber (zinc oxide) (unit: kilogram) be added on the mixing roll at room temperature mixing 30 minutes successively chloropropyl content 0.17%mol) 50 parts of 100 parts (unit: kilogram), thermal silicas (TS530) (unit:; Material after mixing was heat-treated 3 hours in 160 ℃ of baking ovens; After then it being cooled to room temperature, component adds 0.3 part of linking agent (TEPA) (unit: kilogram), mixing more even by weight again; Promptly obtain the Zylox base-material, vulcanize mold pressing with this material and must arrive hot-vulcanized silicone rubber.
Embodiment 6
The concrete operations mode is identical with example 5, and difference is that polyamines (TEPA) consumption becomes 0.5 part.
Embodiment 7
The concrete operations mode is identical with example 5, and difference is that raw-silastic continuously chloropropyl content becomes 0.05mol%.
Embodiment 8
The concrete operations mode is identical with example 5, and difference is that raw-silastic continuously chloropropyl content becomes 0.05mol%, and polyamines (TEPA) consumption becomes 0.15 part.
Embodiment 9
The concrete operations mode is identical with example 5, and difference is that raw-silastic continuously chloropropyl content becomes 0.30mol%.
Embodiment 10
The concrete operations mode is identical with example 5, and difference is that raw-silastic continuously chloropropyl content becomes 0.30mol%, and polyamines (TEPA) consumption becomes 0.6 part.
Embodiment 11
Performance test to the foregoing description 5～10 gained hot-vulcanized silicone rubbers.
Tensile strength and elongation: press GB/T 528-1998 test;
Tear strength: press GB/T 529-1999 test;
Hardness: press GB/T 531-1999 test.
The crosslinked hot-vulcanized silicone rubber materials of table 1 New Polyamine proportionings (parts by weight)
| The Zylox materials | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| Raw-silastic continuously | 100 | 100 | 100 | 100 | 100 | 100 |
| Chloropropyl content mol% | 0.17 | 0.17 | 0.05 | 0.05 | 0.30 | 0.30 |
| WHITE CARBON BLACK | 50 | 50 | 50 | 50 | 50 | 50 |
| Acid absorber | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Linking agent | 0.3 | 0.5 | 0.3 | 0.15 | 0.3 | 0.6 |
The mechanical property of the crosslinked hot-vulcanized silicone rubber of table 2 New Polyamine
| Embodiment | Tensile strength (MPa) | Tear strength (KN/m) | Elongation at break (%) | Hardness (ShA) |
| Embodiment 5 | ?10.2 | 39.1 | 920 | ?44 |
| Embodiment 6 | ?9.2 | 23.1 | 860 | ?44 |
| Embodiment 7 | ?10.5 | 33.71 | 920 | ?46 |
| Embodiment 8 | ?10.0 | 38.0 | 1040 | ?44 |
| Embodiment 9 | ?10.2 | 34.7 | 1000 | ?45 |
| Embodiment 10 | ?11.00 | 44.1 | 1020 | ?45 |
Can find out that from the The performance test results of embodiment 5-10 the hot-vulcanized silicone rubber of novel vulcanization system preparation of the present invention has good mechanical mechanics property, be expected to substitute traditional hot-vulcanized silicone rubber in many Application Areass.
Claims (2)
1. the hot-vulcanized silicone rubber that polyamine compounds is crosslinked is mixed and made into by raw-silastic continuously, thermal silica, linking agent and acid absorber; Wherein: the weight part of said hot-vulcanized silicone rubber each component is: 100 parts of raw-silastic continuouslies, thermal silica 40-70 part, linking agent 0.1-2.0 part, acid absorber 0.5-5.0 part; It is characterized in that: said raw-silastic continuously is the chloropropyl methyl polysiloxane of molecular weight 50 ± 50,000, and the molar content of its chloropropyl is at 0.05%-0.30%; Said thermal silica is commercially available thermal silica; Said linking agent is a polyamine compounds; Said acid absorber is a zinc oxide; Wherein:
Above-mentioned chloropropyl methyl polysiloxane is to obtain chloropropyl seven methyl cyclotetrasiloxane (D through dimethyldiethoxysilane and chloropropyl methyldiethoxysilane cohydrolysis
3D
C3H6Cl), chloropropyl seven methyl cyclotetrasiloxanes again with octamethylcyclotetrasiloxane (D
4) ring-opening copolymerization obtains under catalyst action, wherein said catalyzer is the TMAH silicon alkoxide;
Above-mentioned polyamine compounds is TEPA, triethylene tetramine or aminopropyl silicone oil.
2. the crosslinked hot-vulcanized silicone rubber of polyamine compounds according to claim 1, it is characterized in that: the weight part of said hot-vulcanized silicone rubber each component is: 0.5 part of 100 parts of raw-silastic continuously, 50 parts of thermal silicas, linking agent 0.15-0.6 part, acid absorber.
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| CN109575806A (en) * | 2018-11-23 | 2019-04-05 | 新京喜(唐山)建材有限公司 | Uncured rubber asphalt waterproof coating and preparation method thereof |
| CN110804409A (en) * | 2019-12-03 | 2020-02-18 | 山东大学 | Benzoxazine adhesive for polyimide and preparation and use methods thereof |
| CN112625245B (en) * | 2020-12-10 | 2022-07-12 | 东莞市雄驰电子有限公司 | Chloro/epoxy group fluorine-containing silicone oil and application thereof in room temperature vulcanized fluorosilicone rubber |
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