CN110437618A - A kind of silica gel base heat-resisting composite and preparation method thereof - Google Patents
A kind of silica gel base heat-resisting composite and preparation method thereof Download PDFInfo
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- CN110437618A CN110437618A CN201810410805.1A CN201810410805A CN110437618A CN 110437618 A CN110437618 A CN 110437618A CN 201810410805 A CN201810410805 A CN 201810410805A CN 110437618 A CN110437618 A CN 110437618A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention belongs to silicon rubber composite material technical fields more particularly to a kind of silica gel base heat-resisting composite and preparation method thereof.A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 80-100 parts of dimethyl room temperature vulcanized silicone rubber raw rubbers by weight, 10-20 parts of ethylene propylene diene rubber, 60-80 parts of compounded mix, 4-6 parts of hydroxy silicon oil, 30-50 parts of modified carbon fiber, 30-50 parts of fire retardant, 1-2 parts of cumyl peroxide, 30-50 parts of gas-phase silica, 1-3 parts of double butyl tin oxide, 1-2 parts of dibutyl tin dilaurate, 1-3 parts of iron oxide, 1-3 parts of silicone powder.The thermal stability of silica gel base heat-resisting composite of the invention is high, resistance to ablation ability is strong, widely used.
Description
Technical field
The invention belongs to silicon rubber composite material technical field more particularly to a kind of silica gel base heat-resisting composite and its systems
Preparation Method.
Background technique
Silicon rubber has irreplaceable important position as a kind of important synthesis functional rubber, in life, sciemtifec and technical sphere
It sets.Since fire incident took place frequently in recent years, it is seen that traditional refractory material can not bear fire prevention and protection people's wealth completely
The effect of safety is produced, and it is ashes that traditional polymer, which can be lost completely in the case of fire or burn, needs to add halogen
Fire retardant or other fire-retardant fillers improve the fire protecting performance of polymer.Polymer matrix composite after adding fire retardant can
To have certain flame retardant property, but toxic gas or molten drop drippage can be released during burning, and burn
Product afterwards lacks mechanical strength, cannot play good protective action.And silicon rubber based composites have high-low temperature resistant, combustion
Every excellent comprehensive performance such as product low pollution and its workability is burnt, keeps it more in industry and resident's daily life etc.
It plays highly important role in a field, there is very wide application prospect.
But the requirement with China's expanding economy to material is increasingly harsh, therefore, it is necessary to further increase silicon rubber
The heat resistance of composite material.There are many means for the heat resistance of improvement silicon rubber based composites, wherein it is heat-resisting to add other
And reinforcing filler is a kind of more typical and simple and effective way.
Existing traditional silicon rubber-base composite material product after high temperature sintering, there are loosely organized, easy crushing, mechanical property
Difference, the technical issues of protective effect to internal material can not be played.
Summary of the invention
The present invention solves its technical problem: being directed to prior art problem, silica gel base heat-resisting composite is provided, to mention
It is high with improve the thermal stability and resistance to ablation ability of silicon rubber based composites, and provide a kind of silica gel base heat-resisting composite
Preparation method.
In order to solve the above-mentioned technical problem, the following technical solution is employed by the present invention:
A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 2 by weight
80-100 parts of RTV Methyl Silicone Rubber raw rubber, 10-20 parts of ethylene propylene diene rubber, 60-80 parts of compounded mix, hydroxy silicon oil 4-
It is 6 parts, 30-50 parts of modified carbon fiber, 30-50 parts of fire retardant, 1-2 parts of cumyl peroxide, 30-50 parts of gas-phase silica, double
1-3 parts of butyl tin oxide, 1-2 parts of dibutyl tin dilaurate, 1-3 parts of iron oxide, 1-3 parts of silicone powder.
Preferred scheme, the raw material of the restrictive coating include: 107 dimethyl room temperature vulcanized silicone rubber raw rubbers by weight
It is 85-95 parts, 12-18 parts of ethylene propylene diene rubber, 70 parts of compounded mix, 4-6 parts of hydroxy silicon oil, 35-45 parts of modified carbon fiber, fire-retardant
35-45 parts of agent, 1-2 parts of cumyl peroxide, 35-45 parts of gas-phase silica, 1-3 parts of double butyl tin oxide, tin dilaurate two
1-2 parts of butyl tin, 1-3 parts of iron oxide, 1-3 parts of silicone powder.
Preferred scheme, the compounded mix includes: vinyltriethoxysilane, nano-titanium dioxide, modified expanded
Vermiculite.
Preferred scheme, vinyltriethoxysilane, nano-titanium dioxide, modified expanded vermiculite weight ratio be
0.05-0.1:0.2-0.4:8-12.
Preferred scheme, the fire retardant are the mixture of ammonium polyphosphate and zinc borate composition, ammonium polyphosphate and zinc borate
Weight ratio be 10:1-2.
A kind of preparation method preparing silica gel base heat-resisting composite, comprising the following steps:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, by 107 dimethyl room temperature vulcanization silicon rubbers
Glue raw rubber, compounded mix, hydroxy silicon oil mixing, are warming up to 90-100 DEG C, stir 3-5h with the speed of 100-200r/min；
(2) ethylene propylene diene rubber is added, continues to stir 20-30min, modified carbon fiber is added, fire retardant, peroxidating two is different
Propyl benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 130-150 DEG C,
Continue to stir 20-30min；
(3) it is warming up to 165-175 DEG C, vulcanizes 5-8min, is warming up to 200-220 DEG C, heat preservation 90-120min obtains silica gel base
Heat-resisting composite.
The beneficial effects of the present invention are:
1. present invention preparation is simple, it is easily worked molding, asepsis environment-protecting can use the process equipment of existing rubber, be convenient for
It accomplishes scale production, can melt to form liquid phase flowing and fill out with around it at high temperature by addition fluxing agent in the present invention
Congruent melting, which occurs, for material, eutectic reaction forms congruent melting area reduces the fusion temperature of high-melting-point filler, forms dense ceramic body knot after cooling
Performance when structure is to be effectively reduced the resistance to ablation for improving composite material in turn at porcelain temperature of filler in silicon rubber based composites,
2. carbon fiber it is unmodified have oxygen in the presence of its high-temperature heat-resistance performance it is bad, it is oxidizable decomposition and lose
The original high-strength performance of carbon fiber, modified carbon fiber can be prevented due to the fine and close silica dioxide coating of surface coating with starvation
Only in higher temperature, carbon fiber is contacted with oxygen, allow carbon fiber keep at higher temperatures original excellent performance from
And allow it that can also play the humidification to composite material at high temperature,
3. gas-phase silica enhances the compatibility between carbon fiber and matrix silicon rubber, boundary defect, these advantages are reduced
Make this material that there is good prospect.
Specific embodiment
In order to which those skilled in the art better understood when technical solution provided by the present invention, below with reference to specific
Embodiment is illustrated.
Embodiment 1
A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 2 by weight
80 parts of RTV Methyl Silicone Rubber raw rubber, 10 parts of ethylene propylene diene rubber, 60 parts of compounded mix, 4 parts of hydroxy silicon oil, modified carbon fiber
50 parts of dimension, 30 parts of fire retardant, 2 parts of cumyl peroxide, 50 parts of gas-phase silica, 3 parts of double butyl tin oxide, tin dilaurate two
2 parts of butyl tin, 1 part of iron oxide, 1 part of silicone powder.
Compounded mix includes: vinyltriethoxysilane, nano-titanium dioxide, modified expanded vermiculite, medium vinyl
Triethoxysilane, nano-titanium dioxide, modified expanded vermiculite weight ratio be 0.05:0.2:12.
Fire retardant is the mixture that ammonium polyphosphate and zinc borate form, and the weight ratio of ammonium polyphosphate and zinc borate is 10:1.
A kind of preparation method preparing silica gel base heat-resisting composite, comprising the following steps:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, by 107 dimethyl room temperature vulcanization silicon rubbers
Glue raw rubber, compounded mix, hydroxy silicon oil mixing, are warming up to 90 DEG C, stir 3h with the speed of 200r/min；
(2) ethylene propylene diene rubber is added, continues to stir 20min, modified carbon fiber, fire retardant, peroxidating diisopropyl is added
Benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 150 DEG C, continue to stir
Mix 20min；
(3) 175 DEG C are warming up to, 5min is vulcanized, is warming up to 220 DEG C, heat preservation 90min obtains silica gel base heat-resisting composite.
Embodiment 2
A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 2 by weight
100 parts of RTV Methyl Silicone Rubber raw rubber, 20 parts of ethylene propylene diene rubber, 80 parts of compounded mix, 6 parts of hydroxy silicon oil, carbon modified
30 parts of fiber, 50 parts of fire retardant, 1 part of cumyl peroxide, 30 parts of gas-phase silica, 1 part of double butyl tin oxide, tin dilaurate
1 part of dibutyl tin, 3 parts of iron oxide, 3 parts of silicone powder.
Compounded mix includes: vinyltriethoxysilane, nano-titanium dioxide, modified expanded vermiculite, medium vinyl
Triethoxysilane, nano-titanium dioxide, modified expanded vermiculite weight ratio be 0.1:0.2:12.
Fire retardant is the mixture that ammonium polyphosphate and zinc borate form, and the weight ratio of ammonium polyphosphate and zinc borate is 10:2.
A kind of preparation method preparing silica gel base heat-resisting composite, comprising the following steps:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, by 107 dimethyl room temperature vulcanization silicon rubbers
Glue raw rubber, compounded mix, hydroxy silicon oil mixing, are warming up to 100 DEG C, stir 5h with the speed of 100r/min；
(2) ethylene propylene diene rubber is added, continues to stir 30min, modified carbon fiber, fire retardant, peroxidating diisopropyl is added
Benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 130 DEG C, continue to stir
Mix 30min；
(3) 165 DEG C are warming up to, 8min is vulcanized, is warming up to 200 DEG C, heat preservation 120min obtains silica gel base heat-resisting composite.
Embodiment 3
A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 2 by weight
90 parts of RTV Methyl Silicone Rubber raw rubber, 15 parts of ethylene propylene diene rubber, 70 parts of compounded mix, 5 parts of hydroxy silicon oil, modified carbon fiber
40 parts of dimension, 40 parts of fire retardant, 1.5 parts of cumyl peroxide, 40 parts of gas-phase silica, 2 parts of double butyl tin oxide, tin dilaurate
2 parts of dibutyl tin, 1.5 parts of iron oxide, 2 parts of silicone powder.
Compounded mix includes: vinyltriethoxysilane, nano-titanium dioxide, modified expanded vermiculite, medium vinyl
Triethoxysilane, nano-titanium dioxide, modified expanded vermiculite weight ratio be 0.1:0.3:10.
Fire retardant is the mixture that ammonium polyphosphate and zinc borate form, and the weight ratio of ammonium polyphosphate and zinc borate is 10:
1.5。
A kind of preparation method preparing silica gel base heat-resisting composite, comprising the following steps:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, by 107 dimethyl room temperature vulcanization silicon rubbers
Glue raw rubber, compounded mix, hydroxy silicon oil mixing, are warming up to 95 DEG C, stir 4h with the speed of 160r/min；
(2) ethylene propylene diene rubber is added, continues to stir 25min, modified carbon fiber, fire retardant, peroxidating diisopropyl is added
Benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 140 DEG C, continue to stir
Mix 25min；
(3) 170 DEG C are warming up to, 6min is vulcanized, is warming up to 210 DEG C, heat preservation 100min obtains silica gel base heat-resisting composite.
Embodiment 4
A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 2 by weight
85 parts of RTV Methyl Silicone Rubber raw rubber, 12 parts of ethylene propylene diene rubber, 70 parts of compounded mix, 4 parts of hydroxy silicon oil, modified carbon fiber
45 parts of dimension, 35 parts of fire retardant, 2 parts of cumyl peroxide, 35 parts of gas-phase silica, 3 parts of double butyl tin oxide, tin dilaurate two
1 part of butyl tin, 1 part of iron oxide, 3 parts of silicone powder.
Compounded mix includes: vinyltriethoxysilane, nano-titanium dioxide, modified expanded vermiculite, medium vinyl
Triethoxysilane, nano-titanium dioxide, modified expanded vermiculite weight ratio be 0.05:0.3:8.
Fire retardant is the mixture that ammonium polyphosphate and zinc borate form, and the weight ratio of ammonium polyphosphate and zinc borate is 10:1.
A kind of preparation method preparing silica gel base heat-resisting composite, comprising the following steps:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, by 107 dimethyl room temperature vulcanization silicon rubbers
Glue raw rubber, compounded mix, hydroxy silicon oil mixing, are warming up to 95 DEG C, stir 4h with the speed of 160r/min；
(2) ethylene propylene diene rubber is added, continues to stir 25min, modified carbon fiber, fire retardant, peroxidating diisopropyl is added
Benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 140 DEG C, continue to stir
Mix 25min；
(3) 170 DEG C are warming up to, 6min is vulcanized, is warming up to 210 DEG C, heat preservation 100min obtains silica gel base heat-resisting composite.
Embodiment 5
A kind of silica gel base heat-resisting composite, including restrictive coating, the raw material of the restrictive coating include: 107 2 by weight
95 parts of RTV Methyl Silicone Rubber raw rubber, 18 parts of ethylene propylene diene rubber, 70 parts of compounded mix, 6 parts of hydroxy silicon oil, modified carbon fiber
35 parts of dimension, 45 parts of fire retardant, 1 part of cumyl peroxide, 45 parts of gas-phase silica, 1 part of double butyl tin oxide, tin dilaurate two
2 parts of butyl tin, 2 parts of iron oxide, 2 parts of silicone powder.
Compounded mix includes: vinyltriethoxysilane, nano-titanium dioxide, modified expanded vermiculite, medium vinyl
Triethoxysilane, nano-titanium dioxide, modified expanded vermiculite weight ratio be 0.05:0.2:11.
Fire retardant is the mixture that ammonium polyphosphate and zinc borate form, and the weight ratio of ammonium polyphosphate and zinc borate is 10:
1.8。
A kind of preparation method preparing silica gel base heat-resisting composite, comprising the following steps:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, by 107 dimethyl room temperature vulcanization silicon rubbers
Glue raw rubber, compounded mix, hydroxy silicon oil mixing, are warming up to 95 DEG C, stir 4h with the speed of 160r/min；
(2) ethylene propylene diene rubber is added, continues to stir 25min, modified carbon fiber, fire retardant, peroxidating diisopropyl is added
Benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 140 DEG C, continue to stir
Mix 25min；
(3) 170 DEG C are warming up to, 6min is vulcanized, is warming up to 210 DEG C, heat preservation 100min obtains silica gel base heat-resisting composite.
Although the present invention is disclosed as above with preferred embodiment, however, it is not to limit the invention, any this field skill
Art personnel, without departing from the spirit and scope of the present invention, when can make a little modification and perfect therefore of the invention protection model
It encloses to work as and subject to the definition of the claims.
Claims (6)
1. a kind of silica gel base heat-resisting composite, which is characterized in that including restrictive coating, the raw material of the restrictive coating wraps by weight
It includes: 107 80-100 parts of dimethyl room temperature vulcanized silicone rubber raw rubbers, 10-20 parts of ethylene propylene diene rubber, 60-80 parts of compounded mix, hydroxyl
4-6 parts of base silicone oil, 30-50 parts of modified carbon fiber, 30-50 parts of fire retardant, 1-2 parts of cumyl peroxide, gas-phase silica 30-
50 parts, 1-3 parts of double butyl tin oxide, 1-2 parts of dibutyl tin dilaurate, 1-3 parts of iron oxide, 1-3 parts of silicone powder.
2. silica gel base heat-resisting composite according to claim 1, which is characterized in that the raw material of the restrictive coating wraps by weight
It includes: 107 85-95 parts of dimethyl room temperature vulcanized silicone rubber raw rubbers, 12-18 parts of ethylene propylene diene rubber, 70 parts of compounded mix, hydroxyl silicon
It is 4-6 parts oily, 35-45 parts of modified carbon fiber, 35-45 parts of fire retardant, 1-2 parts of cumyl peroxide, gas-phase silica 35-45
Part, 1-3 parts of double butyl tin oxide, 1-2 parts of dibutyl tin dilaurate, 1-3 parts of iron oxide, 1-3 parts of silicone powder.
3. silica gel base heat-resisting composite according to claim 1, which is characterized in that the compounded mix includes: ethylene
Ethyl triethoxy silicane alkane, nano-titanium dioxide, modified expanded vermiculite.
4. silica gel base heat-resisting composite according to claim 1, which is characterized in that vinyltriethoxysilane is received
Rice titanium dioxide, modified expanded vermiculite weight ratio be 0.05-0.1:0.2-0.4:8-12.
5. silica gel base heat-resisting composite according to claim 1, which is characterized in that the fire retardant be ammonium polyphosphate and
The weight ratio of the mixture of zinc borate composition, ammonium polyphosphate and zinc borate is 10:1-2.
6. a kind of preparation method for preparing the silica gel base heat-resisting composite as described in any one of 1-5, which is characterized in that including following
Step:
(1) in the preparation process of the restrictive coating of tear-proof heat-resistant silicon rubber cable, 107 dimethyl room temperature vulcanized silicone rubbers are raw
Glue, compounded mix, hydroxy silicon oil mixing, are warming up to 90-100 DEG C, stir 3-5h with the speed of 100-200r/min；
(2) ethylene propylene diene rubber is added, continues to stir 20-30min, modified carbon fiber, fire retardant, peroxidating diisopropyl is added
Benzene, gas-phase silica, double butyl tin oxide, dibutyl tin dilaurate, iron oxide, silicone powder are warming up to 130-150 DEG C, after
Continuous stirring 20-30min；
(3) it is warming up to 165-175 DEG C, vulcanizes 5-8min, is warming up to 200-220 DEG C, it is heat-resisting that heat preservation 90-120min obtains silica gel base
Composite material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111471301A (en) * | 2020-04-16 | 2020-07-31 | 云南多宝电缆集团股份有限公司 | Degaussing shielding cable for subway track system and preparation method thereof |
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2018
- 2018-05-02 CN CN201810410805.1A patent/CN110437618A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111471301A (en) * | 2020-04-16 | 2020-07-31 | 云南多宝电缆集团股份有限公司 | Degaussing shielding cable for subway track system and preparation method thereof |
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