CN103897401A - Self-extinguishing flame-retardant cable sheath material and preparation method thereof - Google Patents
Self-extinguishing flame-retardant cable sheath material and preparation method thereof Download PDFInfo
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- CN103897401A CN103897401A CN201410072286.4A CN201410072286A CN103897401A CN 103897401 A CN103897401 A CN 103897401A CN 201410072286 A CN201410072286 A CN 201410072286A CN 103897401 A CN103897401 A CN 103897401A
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Abstract
The invention discloses a self-extinguishing flame-retardant cable sheath material, comprising the following raw materials in parts by weight: 75-100 parts of dimethyl siloxane-methyl vinyl siloxane copolymer, 20-30 parts of fumed silica 15-20 parts of precipitated white carbon black, 11-15 parts of octamethylcyclotetrasiloxane, 4-10 parts of zinc oxide, 35-45 parts of talcum powder, 2-3 parts of hydroxyl silicone oil, 0.11-0.15 parts of selenium oxide, 1-1.8 parts of polysiloxane, 0.00024-0.0005 parts of platinum catalyst, 18-23 parts of aluminium hydroxide, 20-30 parts of magnesium hydrate, and 30-50 parts of calcium metasilicate. The invention also discloses a preparation method of the self-extinguishing flame-retardant cable sheath material. The self-extinguishing flame-retardant cable sheath material disclosed by the invention is free of pollution, good in high-temperature self-extinguishing effect, and simple in preparation process, and has certain strength and support ability after being sintered.
Description
Technical field
The present invention relates to cable sheath material technical field, relate in particular to one and can certainly put out flame-proof cable sheath material and preparation method thereof.
Background technology
Along with the raising of social safety consciousness, many Application Areass have all clearly proposed the requirement of flame retardant properties to used elastomeric material, conventionally use Halogen rubber matrix or in rubber matrix, add halogen flame to reach good flame retardant effect, although effect is fine, but when burning, emit a large amount of poisonous and corrosive gasess, and be attended by a large amount of smog.
Along with environmental protection and the recovery increasingly stringent of regulation and continuing to bring out of novel sheath material, traditional cable material is being faced with huge challenge, current technology mainly adopts LSOH anti-flaming rubber, mainly contain silicon rubber, ethylene-propylene rubber(EPR) and second is rare-vinyl acetate rubber etc., these rubber have flame retardancy and self-extinguishing in fire, in fire, tool has certain effect, but after continuous high temperature burning, burn excess and there is no physical strength, become ashes, can cause more dangerous secondary harm, in protection fire, the person and property safety are the major issues that people are concerned about, how to prepare a kind of pollution-free, high temperature is effective from putting out, the cable sheath material after burning with some strength and supporting capacity becomes the current technical issues that need to address.
Summary of the invention
One can be put out flame-proof cable sheath material and preparation method thereof certainly, and above-mentioned can certainly to put out flame-proof cable sheath material pollution-free, and high temperature is effective from putting out, and has some strength and supporting capacity after burning.
The one that the present invention proposes can be put out flame-proof cable sheath material certainly, and its raw material comprises by weight:
Dimethyl siloxane-methyl ethylene silicone copolymers 75-100 part, thermal silica 20-30 part, precipitated silica 15-20 part, octamethylcyclotetrasiloxane 11-15 part, zinc oxide 4-10 part, talcum powder 35-45 part, hydroxy silicon oil 2-3 part, selenium oxide 0.11-0.15 part, polysiloxane 1-1.8 part, platinum catalyst 0.00024-0.0005 part, aluminium hydroxide 18-23 part, magnesium hydroxide 20-30 part, Calucium Silicate powder 30-50 part.
Preferably, Calucium Silicate powder is made up of one or more of wollastonite, xonotlite, tobermorite, stellite, manganwollastonite.
Preferably, Calucium Silicate powder is wollastonite, and mean particle length is 15-35 μ m.
Preferably, platinum catalyst is by the aqueous isopropanol of Platinic chloride, Platinic chloride or be coated on the Platinic chloride of silicone resin surface of microcapsule and one or more of divinyl tetramethyl disiloxane complex compound form.
Preferably, the weight ratio of zinc oxide and Calucium Silicate powder is (1-2): (7-10).
Preferably, above-mentioned its raw material that can certainly put out flame-proof cable sheath material comprises by weight:
Dimethyl siloxane-methyl ethylene silicone copolymers 80-85 part, thermal silica 25-28 part, precipitated silica 16-18 part, octamethylcyclotetrasiloxane 12-13 part, zinc oxide 5-6 part, talcum powder 38-40 part, hydroxy silicon oil 2-3 part, selenium oxide 0.12-0.14 part, polysiloxane 1.3-1.5 part, platinum catalyst 0.00037-0.00042 part, aluminium hydroxide 19-22 part, magnesium hydroxide 25-29 part, Calucium Silicate powder 40-50 part.
Preferably, above-mentioned its raw material that can certainly put out flame-proof cable sheath material comprises by weight:
82 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 27 parts of thermal silicas, 17 parts of precipitated silicas, 12.5 parts of octamethylcyclotetrasiloxanes, 5.3 parts, zinc oxide, 39 parts of talcum powder, 2.5 parts of hydroxy silicon oils, 0.13 part, selenium oxide, 1.45 parts of polysiloxane, 0.00041 part of platinum catalyst, 20 parts, aluminium hydroxide, 28 parts of magnesium hydroxides, 46 parts of Calucium Silicate powder.
The invention also discloses a kind ofly according to the above-mentioned preparation method that can certainly put out flame-proof cable sheath material, comprise the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil by proportioning and send in kneader mixing, melting temperature is 185-200 DEG C, mixing time is 0.5-1h, and the material obtaining is cooled to 40-55 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.3-0.6h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
In the present invention, adopt above-mentioned dimethyl siloxane-methyl ethylene silicone copolymers, the tear strength of cross-linked rubber is high, and compression set is low, use thermal silica and precipitated silica, and with octamethylcyclotetrasiloxane as surface treatment agent, can improve the intensity of cross-linked rubber, improve hydrophobicity, filling properties is good, and the reinforcement strength of sheath material obviously increases, with zinc oxide and talcum powder use, the hardness of adjustable cross-linked rubber, improves the extrusion performance of sizing material and reduces costs, add appropriate hydroxy silicon oil and can ensure processing characteristics, suppress the structurizing of sizing material, because of the cross-linking density of methyl vinyl silicone rubber lower, under high temperature, siloxane main chain decomposes, generate rapidly low molecular ring bodies and burn away, under the effect of platinum catalyst, hydrogen in polysiloxane silica-based with dimethyl siloxane-methyl ethylene silicone copolymers in vinyl generation addition reaction, accelerating oxidation on its silastic surface contacting with air, degraded is to form high crosslinking structure, surperficial organic group is reduced, formation is similar to the silicone film not firing and has shielded air, cable sheath is from putting out, under magnesium hydroxide and aluminium hydroxide high temperature, discharge water vapour, generate aluminum oxide and magnesium oxide, the water vapour of release can make temperature of combustion reduce, and flame retardant effect is obvious, properties of rubber containing Calucium Silicate powder is more stable, the vesicular structure producing in cable sheath burning changes slowly, and after naked light temperature exceedes 1000 DEG C, vesicular structure changes slowly, and the mass loss rate after cable sheath burning is less, resistance to rupture is good, and heat conductivility also reduces greatly.
Embodiment
Embodiment 1
One can be put out flame-proof cable sheath material certainly, and its raw material comprises by weight:
81 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 27 parts of thermal silicas, 18 parts of precipitated silicas, 14 parts of octamethylcyclotetrasiloxanes, 5 parts, zinc oxide, 37 parts of talcum powder, 2.6 parts of hydroxy silicon oils, 0.13 part, selenium oxide, 1.5 parts of polysiloxane, 0.00042 part of platinum catalyst, 22 parts, aluminium hydroxide, 24 parts of magnesium hydroxides, 47 parts of Calucium Silicate powder; Wherein Calucium Silicate powder is made up of wollastonite, xonotlite, tobermorite, stellite and manganwollastonite, and platinum catalyst is made up of the aqueous isopropanol of Platinic chloride, the Platinic chloride that is coated on silicone resin surface of microcapsule and divinyl tetramethyl disiloxane complex compound.
In the present embodiment, the above-mentioned preparation method that can certainly put out flame-proof cable sheath material comprises the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil send in kneader mixingly by proportioning, melting temperature is 185 DEG C, and mixing time is 0.8h, and the material obtaining is cooled to 52 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.3h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
Embodiment 2
One can be put out flame-proof cable sheath material certainly, and its raw material comprises by weight:
99 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 21 parts of thermal silicas, 16 parts of precipitated silicas, 13 parts of octamethylcyclotetrasiloxanes, 5 parts, zinc oxide, 38 parts of talcum powder, 2.2 parts of hydroxy silicon oils, 0.11 part, selenium oxide, 1.2 parts of polysiloxane, 0.00035 part of platinum catalyst, 22.5 parts, aluminium hydroxide, 25 parts of magnesium hydroxides, 42 parts of Calucium Silicate powder; Wherein Calucium Silicate powder is wollastonite, and mean particle length is 15-35 μ m, and platinum catalyst is made up of Platinic chloride, the Platinic chloride that is coated on silicone resin surface of microcapsule and divinyl tetramethyl disiloxane complex compound.
In the present embodiment, the above-mentioned preparation method that can certainly put out flame-proof cable sheath material comprises the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil send in kneader mixingly by proportioning, melting temperature is 190 DEG C, and mixing time is 0.6h, and the material obtaining is cooled to 42 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.5h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
Embodiment 3
One can be put out flame-proof cable sheath material certainly, and its raw material comprises by weight:
85 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 25 parts of thermal silicas, 18 parts of precipitated silicas, 11 parts of octamethylcyclotetrasiloxanes, 7 parts, zinc oxide, 41 parts of talcum powder, 2.5 parts of hydroxy silicon oils, 0.14 part, selenium oxide, 1.6 parts of polysiloxane, 0.00044 part of platinum catalyst, aluminium hydroxide 18-23 part, 29 parts of magnesium hydroxides, 32 parts of Calucium Silicate powder; Wherein Calucium Silicate powder is made up of tobermorite, stellite and manganwollastonite, and platinum catalyst is Platinic chloride.
In the present embodiment, the above-mentioned preparation method that can certainly put out flame-proof cable sheath material comprises the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil send in kneader mixingly by proportioning, melting temperature is 195 DEG C, and mixing time is 0.9h, and the material obtaining is cooled to 54 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.3-0.6h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
Embodiment 4
One can be put out flame-proof cable sheath material certainly, and its raw material comprises by weight:
76 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 30 parts of thermal silicas, 19 parts of precipitated silicas, 14 parts of octamethylcyclotetrasiloxanes, 4 parts, zinc oxide, 44 parts of talcum powder, 2.9 parts of hydroxy silicon oils, 0.12 part, selenium oxide, 1.5 parts of polysiloxane, 0.00028 part of platinum catalyst, aluminium hydroxide 18-23 part, 23 parts of magnesium hydroxides, 47 parts of Calucium Silicate powder; Wherein Calucium Silicate powder is made up of xonotlite, tobermorite and stellite, and platinum catalyst is Platinic chloride and the divinyl tetramethyl disiloxane complex compound that is coated on silicone resin surface of microcapsule.
In the present embodiment, the above-mentioned preparation method that can certainly put out flame-proof cable sheath material comprises the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil send in kneader mixingly by proportioning, melting temperature is 187 DEG C, and mixing time is 0.8h, and the material obtaining is cooled to 48 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.4h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
Embodiment 5
One can be put out flame-proof cable sheath material certainly, and its raw material comprises by weight:
82 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 27 parts of thermal silicas, 17 parts of precipitated silicas, 12.5 parts of octamethylcyclotetrasiloxanes, 5.3 parts, zinc oxide, 39 parts of talcum powder, 2.5 parts of hydroxy silicon oils, 0.13 part, selenium oxide, 1.45 parts of polysiloxane, 0.00041 part of platinum catalyst, 20 parts, aluminium hydroxide, 28 parts of magnesium hydroxides, 46 parts of Calucium Silicate powder; Wherein Calucium Silicate powder is wollastonite, and mean particle length is 15-35 μ m, and platinum catalyst is made up of with the Platinic chloride and the divinyl tetramethyl disiloxane complex compound that are coated on silicone resin surface of microcapsule the aqueous isopropanol of Platinic chloride.
In the present embodiment, the above-mentioned preparation method that can certainly put out flame-proof cable sheath material, comprises the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil send in kneader mixingly by proportioning, melting temperature is 195 DEG C, and mixing time is 0.5h, and the material obtaining is cooled to 52 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.5h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
Above-mentioned can self-extinguishing cable sheath material, adopt above-mentioned dimethyl siloxane-methyl ethylene silicone copolymers, the tear strength of cross-linked rubber is high, compression set is low, use thermal silica and precipitated silica, and with octamethylcyclotetrasiloxane as surface treatment agent, can improve the intensity of cross-linked rubber, improve hydrophobicity, filling properties is good, and the reinforcement strength of sheath material obviously increases, with zinc oxide and talcum powder use, the hardness of adjustable cross-linked rubber, improves the extrusion performance of sizing material and reduces costs, add appropriate hydroxy silicon oil and can ensure processing characteristics, suppress the structurizing of sizing material, because of the cross-linking density of methyl vinyl silicone rubber lower, under high temperature, siloxane main chain decomposes, generate rapidly low molecular ring bodies and burn away, under the effect of platinum catalyst, hydrogen in polysiloxane silica-based with dimethyl siloxane-methyl ethylene silicone copolymers in vinyl generation addition reaction, accelerating oxidation on its silastic surface contacting with air, degraded is to form high crosslinking structure, surperficial organic group is reduced, formation is similar to the silicone film not firing and has shielded air, cable sheath is from putting out, under magnesium hydroxide and aluminium hydroxide high temperature, discharge water vapour, generate aluminum oxide and magnesium oxide, the water vapour of release can make temperature of combustion reduce, and flame retardant effect is obvious, properties of rubber containing Calucium Silicate powder is more stable, the vesicular structure producing in cable sheath burning changes slowly, and after naked light temperature exceedes 1000 DEG C, vesicular structure changes slowly, and the mass loss rate after cable sheath burning is less, resistance to rupture is good, and heat conductivility also reduces greatly.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (8)
1. can certainly put out a flame-proof cable sheath material, it is characterized in that, its raw material comprises by weight:
Dimethyl siloxane-methyl ethylene silicone copolymers 75-100 part, thermal silica 20-30 part, precipitated silica 15-20 part, octamethylcyclotetrasiloxane 11-15 part, zinc oxide 4-10 part, talcum powder 35-45 part, hydroxy silicon oil 2-3 part, selenium oxide 0.11-0.15 part, polysiloxane 1-1.8 part, platinum catalyst 0.00024-0.0005 part, aluminium hydroxide 18-23 part, magnesium hydroxide 20-30 part, Calucium Silicate powder 30-50 part.
2. according to claim 1ly can certainly put out flame-proof cable sheath material, it is characterized in that, Calucium Silicate powder is made up of one or more of wollastonite, xonotlite, tobermorite, stellite, manganwollastonite.
3. according to claim 2ly can certainly put out flame-proof cable sheath material, it is characterized in that, Calucium Silicate powder is wollastonite, and mean particle length is 15-35 μ m.
4. according to claim 1ly can certainly put out flame-proof cable sheath material, it is characterized in that, platinum catalyst is by the aqueous isopropanol of Platinic chloride, Platinic chloride or be coated on the Platinic chloride of silicone resin surface of microcapsule and one or more of divinyl tetramethyl disiloxane complex compound form.
5. according to claim 1ly can certainly put out flame-proof cable sheath material, it is characterized in that, the weight ratio of zinc oxide and Calucium Silicate powder is (1-2): (7-10).
6. according to claim 1ly can certainly put out flame-proof cable sheath material, it is characterized in that, its raw material comprises by weight:
Dimethyl siloxane-methyl ethylene silicone copolymers 80-85 part, thermal silica 25-28 part, precipitated silica 16-18 part, octamethylcyclotetrasiloxane 12-13 part, zinc oxide 5-6 part, talcum powder 38-40 part, hydroxy silicon oil 2-3 part, selenium oxide 0.12-0.14 part, polysiloxane 1.3-1.5 part, platinum catalyst 0.00037-0.00042 part, aluminium hydroxide 19-22 part, magnesium hydroxide 25-29 part, Calucium Silicate powder 40-50 part.
7. according to claim 6ly can certainly put out flame-proof cable sheath material, it is characterized in that, its raw material comprises by weight:
82 parts of dimethyl siloxane-methyl ethylene silicone copolymers, 27 parts of thermal silicas, 17 parts of precipitated silicas, 12.5 parts of octamethylcyclotetrasiloxanes, 5.3 parts, zinc oxide, 39 parts of talcum powder, 2.5 parts of hydroxy silicon oils, 0.13 part, selenium oxide, 1.45 parts of polysiloxane, 0.00041 part of platinum catalyst, 20 parts, aluminium hydroxide, 28 parts of magnesium hydroxides, 46 parts of Calucium Silicate powder.
8. according to the preparation method that can certainly put out flame-proof cable sheath material described in any one in claim 1-7, it is characterized in that, comprise the steps:
S1, take dimethyl siloxane-methyl ethylene silicone copolymers, thermal silica, precipitated silica and hydroxy silicon oil by proportioning and send in kneader mixing, melting temperature is 185-200 DEG C, mixing time is 0.5-1h, and the material obtaining is cooled to 40-55 DEG C;
S2, take octamethylcyclotetrasiloxane, zinc oxide, talcum powder, selenium oxide, aluminium hydroxide, magnesium hydroxide and Calucium Silicate powder send in above-mentioned kneader by proportioning, continue mixing 0.3-0.6h with the cooled material of above-mentioned S1, discharge, filter glue, be cooled to normal temperature;
S3, take polysiloxane and platinum catalyst by proportioning, and together with the material obtaining with above-mentioned S2, be placed in mill and mix, obtain certainly putting out flame-proof cable sheath material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885422A (en) * | 2016-05-20 | 2016-08-24 | 安徽新科电缆集团股份有限公司 | Flame-retardant cable sheath and preparation method thereof |
| CN107286671A (en) * | 2017-07-05 | 2017-10-24 | 东莞市联洲知识产权运营管理有限公司 | A kind of hydrophobic enhanced heat vulcanized silicone rubber and preparation method thereof |
| CN116041962A (en) * | 2023-01-31 | 2023-05-02 | 安徽迈腾新材料有限公司 | Low-compressibility flame-retardant silicone rubber material |
-
2014
- 2014-03-01 CN CN201410072286.4A patent/CN103897401A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 谢忠麟: "陶瓷化硅橡胶", 《橡胶工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885422A (en) * | 2016-05-20 | 2016-08-24 | 安徽新科电缆集团股份有限公司 | Flame-retardant cable sheath and preparation method thereof |
| CN107286671A (en) * | 2017-07-05 | 2017-10-24 | 东莞市联洲知识产权运营管理有限公司 | A kind of hydrophobic enhanced heat vulcanized silicone rubber and preparation method thereof |
| CN116041962A (en) * | 2023-01-31 | 2023-05-02 | 安徽迈腾新材料有限公司 | Low-compressibility flame-retardant silicone rubber material |
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Application publication date: 20140702 |