CN109957248A - It is used to form the composition and flame-proof silicon rubber of flame-proof silicon rubber - Google Patents
It is used to form the composition and flame-proof silicon rubber of flame-proof silicon rubber Download PDFInfo
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Abstract
The present invention provides a kind of compositions and flame-proof silicon rubber for being used to form flame-proof silicon rubber.The composition includes silicon rubber, Vitrified powder, chopped strand and fluxing agent；The diameter of chopped strand is 5~12um, and length is 1~9mm.Under the action of fluxing agent; Vitrified powder can melt under lower ignition temperature; the SiO 2 powder formed after silicon rubber burning simultaneously is able to participate in above-mentioned melting process; to form the ceramic protective shell with higher-strength on flame-proof silicon rubber surface; play the role of isolation external flame, protects internal material damage.On the other hand since chopped strand can play the role of skeleton in the inside of flame-proof silicon rubber, and then be conducive to the intensity and structural intergrity of strengthen burning product.On this basis, being used in compounding by chopped strand, Vitrified powder, silicon rubber and fluxing agent can make the flame-proof silicon rubber to be formed have more excellent flame retardant property.
Description
Technical field
The present invention relates to fire proofing material, in particular to a kind of composition for being used to form flame-proof silicon rubber and fire-retardant
Silicon rubber.
Background technique
In a fire, the protection person and property safety are nowadays one of Important Problems concerned by people.Often in recent years
The fire problem of generation, also makes scientific researchers put into more researchs and deep thinking in terms of fire proofing material.For example it is building
In terms of building material, reducing the major measure injured caused by fire is to stop the further sprawling of flame as early as possible, at the same time
It protects communication apparatus not to be destroyed, maintains normally using the unimpeded of function and exit passageway.At this point, fire-resistive construction, fire prevention
Cable material becomes the critical issue for reducing fire damage.
Nontoxic, heat-resist silastic material is more suitable as fire-resistive construction and fireproof cable material, still
In flame, usual silicone rubber can be vapored away because of thermal degradation, and then the silica generated is made not have any intensity.Cause
This needs to take other effective measures, to achieve the purpose that fire protection flame retarding.
Summary of the invention
The main purpose of the present invention is to provide a kind of composition and flame-proof silicon rubber for being used to form flame-proof silicon rubber, with
Solve the problems, such as that the flame retardant property of existing silicon rubber is poor.
To achieve the goals above, one aspect of the invention provides a kind of composition for being used to form flame-proof silicon rubber,
Composition includes silicon rubber, Vitrified powder, chopped strand and fluxing agent, and the diameter of chopped strand is 5~12um, and length is 1~
9mm。
Further, by weight, composition includes 100 parts of silicon rubber, 25~100 parts of Vitrified powder, 5~40 parts
Chopped strand and 10~50 parts of fluxing agent.
Further, by weight, above-mentioned composition further includes 10~40 parts of fire retardant and 10~20 parts of filler.
Further, filler includes precipitated silica and/or fume colloidal silica.
Further, by weight, above-mentioned composition further includes 1~5 part of vulcanizing agent, and vulcanizing agent includes 2,5- diformazan
One of base -2,5- bis(t-butylperoxy) hexane, peroxidating bis- (2,4 dichloro benzene formyls) and cumyl peroxide
Or it is a variety of.
Further, by weight, composition includes 100 parts of silicon rubber, 25~70 parts of Vitrified powder, 10~30 parts
Chopped strand, 20~35 parts of fluxing agent, 10~30 parts of fire retardant, 10~15 parts of filler and 2~4 parts of vulcanizing agent.
Further, Vitrified powder and the weight ratio of chopped strand are 2~5:1.
Further, chopped strand is selected from one of basalt fibre, carbon fiber and glass fibre or a variety of.
Further, the softening point of fluxing agent is 400~900 DEG C.
The another aspect of the application additionally provides a kind of flame-proof silicon rubber, and flame-proof silicon rubber is made using above-mentioned composition.
It applies the technical scheme of the present invention, unbodied SiO 2 powder can be generated after common silicon rubber burning, into
And it is unable to reach the performance of fire protection flame retarding.In above-mentioned composition provided by the present application, under the action of fluxing agent, Vitrified powder can
The SiO 2 powder for melting under lower ignition temperature, while being formed after silicon rubber burning is able to participate above-mentioned molten
During melting, to form the ceramic protective shell with higher-strength on flame-proof silicon rubber surface, isolation external flame is played,
Protect the effect of internal material damage.On the other hand since chopped strand can play skeleton in the inside of flame-proof silicon rubber
Effect, and then be conducive to the intensity and structural intergrity of strengthen burning product.On this basis, pass through chopped strand, porcelain
Powder, silicon rubber and fluxing agent are used in compounding, and so that the flame-proof silicon rubber to be formed is had more excellent flame retardant property.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
As described in background technique, the poor problem of the flame retardant property of existing silicon rubber.In order to solve above-mentioned skill
Art problem, the present invention provides a kind of composition for being used to form flame-proof silicon rubber, the composition include silicon rubber, Vitrified powder,
Chopped strand and fluxing agent；The diameter of chopped strand is 5~12um, and length is 1~9mm.
Unbodied SiO 2 powder can be generated after common silicon rubber burning, and then is unable to reach the property of fire protection flame retarding
Energy.In above-mentioned composition provided by the present application, under the action of fluxing agent, Vitrified powder can occur under lower ignition temperature
Melting, while the SiO 2 powder formed after silicon rubber burning is able to participate in above-mentioned melting process, thus in fire-retardant silicon
Rubber surface forms the ceramic protective shell with higher-strength, plays isolation external flame, protects internal material damage.
On the other hand since chopped strand can play the role of skeleton in the inside of flame-proof silicon rubber, and then be conducive to strengthen burning production
The intensity and structural intergrity of object.On this basis, being used in compounding by chopped strand, Vitrified powder, silicon rubber and fluxing agent,
It can make the flame-proof silicon rubber to be formed that there is more excellent flame retardant property.
Term " Vitrified powder " in the application is one or more of calcined kaolin, mica powder and diatomite, excellent
Selection of land, the weight ratio of calcined kaolin, mica powder and diatomite are 10~50:10~25:10~25.Calcined kaolin is kaolinite
Soil passes through 1200 DEG C of calcined products of temperatures above, such as Shanghai Aladdin reagent Co., Ltd, producer.Such as spirit of mica powder producer
Shou County Hua Yuan mica Co., Ltd.
Flame-proof silicon rubber made from composition using above-mentioned composition has excellent flame retardant property.In a kind of preferred reality
It applies in mode, by weight, composition includes 100 parts of silicon rubber, 25~100 parts of Vitrified powder, 5~40 parts of chopped fibre
Dimension and 10~50 parts of fluxing agent.In above-mentioned composition, the dosage respectively formed includes but is not limited to above-mentioned composition, and is limited
Be conducive to further increase the flame retardant property of the flame-proof silicon rubber of its formation in above-mentioned composition.
In order to further increase the comprehensive performance of flame-proof silicon rubber obtained, it is preferable that by weight, above-mentioned composition
It further include 10~40 parts of fire retardant.The anti-flammability that fire retardant is conducive to improve flame-proof silicon rubber is added, and by the use of fire retardant
Amount limits within the above range, is conducive to the flame retardant property for further increasing flame-proof silicon rubber.
Preferably inorganic fire retardants.Inorganic fire retardants is added, the anti-flammability of enhancing flame-proof silicon rubber on the one hand can be played
Can, on the other hand porcelain can also be participated in jointly with Vitrified powder and reacted, play better cooperative flame retardant effect.
It is highly preferred that fire retardant is Al (OH)3And/or Mg (OH)2.Above-mentioned fire retardant under the high temperature conditions, completely dehydration after
Become Al2O3Or after MgO, and it is able to participate in porcelainization reaction, to be conducive to further increase the strong of thermal decomposition product
Degree, and then improve flame retardant effect.
Preferably, by weight, above-mentioned composition further includes 10~20 parts of filler.Filler is added to be conducive to improve resistance
Fire the mechanical property of silicon rubber.And be conducive to the restriction of the dosage of filler to further increase flame-proof silicon rubber within the above range
Mechanical property.It is highly preferred that filler includes fume colloidal silica and/or precipitated silica.
In order to further improve the comprehensive performance of silicon rubber, it is preferable that by weight, above-mentioned composition includes 1~5
The vulcanizing agent of part.Preferably, vulcanizing agent includes 2,5- dimethyl -2,5- bis(t-butylperoxy) hexane, peroxidating bis- (2,4-
Dichloro-benzoyl) and one of cumyl peroxide or a variety of.
Flame retardant rubber with above-mentioned composition has more excellent flame retardant property and mechanical property etc..A kind of preferred
In embodiment, by weight, composition include 100 parts of silicon rubber, 25~70 parts of Vitrified powder, 10~30 parts be chopped
Fiber, 20~35 parts of fluxing agent, 10~30 parts of fire retardant, 10~15 parts of filler and 2~4 parts of vulcanizing agent.It will be above-mentioned
The dosage of each component limits within the above range, is conducive to the synthesis for further increasing flame-proof silicon rubber and performance.
Be conducive to further increase the intensity of strengthen burning product by the proportionate relationship of optimization Vitrified powder and chopped strand
And structural intergrity, it is preferable that Vitrified powder and the weight ratio of chopped strand are 2~5:1.
In a kind of preferred embodiment, above-mentioned chopped strand includes but is not limited to basalt fibre, carbon fiber and glass
One of fiber is a variety of.Above-mentioned glass fibre is preferably resurrection glass fibre.
In above-mentioned composition, fluxing agent can use fluxing agent commonly used in the art.Preferably, the softening point of fluxing agent is
400~900 DEG C.The fluxing agent of softening point within the above range is selected, is conducive to that Vitrified powder is made to occur to melt at a lower temperature
Change, and then further shorten the time to form porcelain protective shell, and then extends duration of fire resistance.
Method commonly used in the art can be used with the preparation method that above-mentioned composition prepares flame-proof silicon rubber.Preferably,
It is prepared using following methods:
Above-mentioned composition is kneaded, Bao Tong, slice, obtaining can porcelain SiClx rubber composition；By it is above-mentioned can porcelain SiClx
Rubber composition after cooling placement 12h, vulcanizes 45min at 180 DEG C, 10MPa, then places it in 200 DEG C at room temperature
4h is kept the temperature in baking oven, and required Composite flame-retardant silicone rubber material can be obtained.
On the other hand the application additionally provides a kind of flame-proof silicon rubber, which is made using above-mentioned composition.
In above-mentioned composition provided by the present application, under the action of fluxing agent, Vitrified powder can be in lower ignition temperature
It is lower to melt, while the SiO 2 powder formed after silicon rubber burning is able to participate in above-mentioned melting process, thus
Flame-proof silicon rubber surface forms the ceramic protective shell with higher-strength, plays isolation external flame, and protection internal material is exempted from
The effect being damaged.On the other hand since chopped strand can play the role of skeleton, Jin Eryou in the inside of flame-proof silicon rubber
Conducive to the intensity and structural intergrity of strengthen burning product.On this basis, it by chopped strand, Vitrified powder, silicon rubber and helps
Flux is used in compounding, and the flame-proof silicon rubber to be formed can be made to have more excellent flame retardant property.On this basis, in use
The flame-proof silicon rubber for stating composition formation has excellent flame retardant property.
Below in conjunction with specific embodiment, present invention is further described in detail, these embodiments should not be understood as limitation originally
Invent range claimed.
The producer of raw material used in embodiment and model are shown in Table 1.
Table 1
Embodiment 1
By 100g silicon rubber, 25g Vitrified powder (25g calcined kaolin), 50g fluxing agent, 25g chopped strand (glass fibers
Dimension), 30g fire retardant (Al (OH)3), the vulcanizing agent (cumyl peroxide) of 20g fume colloidal silica and 2g be added to mill
It is kneaded uniformly on machine, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 2
By 100g silicon rubber, 50g Vitrified powder (25g kaolin, 25 mica powders), 10g fluxing agent, 40g chopped strand (glass
Fiber), 10g fire retardant (Al (OH)3), (double two or five) are added on open mill and are kneaded for 15g fume colloidal silica and 2g vulcanizing agent
Uniformly, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 3
By 100g silicon rubber, 100g Vitrified powder (50 calcined kaolins, 25g mica powder, 25g diatomite), 40g fluxing agent,
5g chopped strand (glass fibre), 40g fire retardant (Al (OH)3), (double two or four) are added for 10g fume colloidal silica and 2g vulcanizing agent
It is kneaded uniformly on to open mill, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 4
By 100g silicon rubber, 55g Vitrified powder (30g calcined kaolin 15g mica powder, 10 diatomite), 25g fluxing agent, 30g
Chopped strand (glass fibre), 15g fire retardant (Al (OH)3), (double two or five) are added for the vulcanizing agent of 10g fume colloidal silica and 3g
It is kneaded uniformly on to open mill, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 5
By 100g silicon rubber, 45g Vitrified powder (20g calcined kaolin, 10g mica powder, 15g diatomite), 35g fluxing agent,
25g chopped strand (glass fibre), 30g fire retardant (Al (OH)3), the vulcanization aid (peroxidating of 15g fume colloidal silica and 4g
Diisopropylbenzene (DIPB)) being added to mixing on open mill, uniformly, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 6
By 100g silicon rubber, 60g Vitrified powder (50g calcined kaolin, 10g mica powder), 20g fluxing agent, 30g chopped strand
(glass fibre), 30g fire retardant (Al (OH)3), the vulcanization aid (cumyl peroxide) of 12g fume colloidal silica and 3g plus
Enter to mixing on open mill uniformly, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 7
By 100g silicon rubber, 70g Vitrified powder (40g calcined kaolin, 20g mica powder, 10g diatomite), 30g fluxing agent,
20g chopped strand (glass fibre), 30g fire retardant (Al (OH)3), the vulcanization aid (peroxide of 15g fume colloidal silica and 2.5g
Change diisopropylbenzene (DIPB)) being added to mixing on open mill, uniformly, Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 8
By 100g silicon rubber, 90g Vitrified powder (weight ratio of calcined kaolin, mica powder and diatomite is 4:2:1), 20g
Fluxing agent, 30g chopped strand (glass fibre), 30g fire retardant (Al (OH)3), the vulcanization aid of 12g fume colloidal silica and 3g
(cumyl peroxide) is added on open mill and is kneaded uniformly, and Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 9
By 100g silicon rubber, 90g Vitrified powder (weight ratio of calcined kaolin, mica powder and diatomite be 3:1.5:1),
40g fluxing agent, 5g chopped strand (glass fibre), 35g fire retardant (Al (OH)3), the vulcanization of 10g fume colloidal silica and 3g helps
Agent (cumyl peroxide) is added on open mill and is kneaded uniformly, and Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 10
By 100g silicon rubber, 100g Vitrified powder (weight ratio of calcined kaolin, mica powder and diatomite be 10:1:1),
40g fluxing agent, 5g chopped strand (glass fibre), 40g fire retardant (Al (OH)3), the vulcanization of 10g fume colloidal silica and 2g helps
Agent (cumyl peroxide) is added on open mill and is kneaded uniformly, and Bao Tong, slice, obtaining can porcelain SiClx rubber composition.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.Above-mentioned ablation resultant is tested for the property.
Embodiment 11
With the difference of embodiment 1 are as follows: chopped strand is basalt fibre.
By it is above-mentioned can porcelain SiClx rubber composition at room temperature it is cooling place 12h after, vulcanize at 180 DEG C, 10MPa
Then 45min places it in 200 DEG C of baking ovens and keeps the temperature 4h, required Composite flame-retardant silicone rubber material can be obtained.
Above-mentioned Composite flame-retardant silicone rubber material is divided into four samples, and correspondingly in 600 DEG C, 800 DEG C, 1000
DEG C, ablation 20min in 1200 DEG C of Muffle furnace, obtain ablation resultant.
Performance test
Composite flame-retardant silicone rubber material obtained in embodiment 1 to 11 is successively denoted as sample 1 to 11, using silicon rubber as
Sample 12.It is tested using tensile strength and elongation at break of the universal testing machine to sample 1 to 12, is pressed sample with cut-off knife
The batten of dumbbell shape is cut into according to testing standard, testing standard is tested according to GB/T528-2009, the drawing of universal testing machine
Stretching rate travel is 500mms-1。
Using the shore hardness of Shore durometer test sample 1 to 12.
Product bending strength after being pyrolyzed at different temperature using universal testing machine test sample 1 to 12, using " 3 points
Bending method " is tested, loading speed 2mm/min.Test result is shown in Table 2.
Table 2
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Comparing embodiment 1 to 5 and 9 is it is found that be limited to this Shen for each composition for the composition for being used to form flame-proof silicon rubber
Be conducive to improve the comprehensive performance of flame-proof silicon rubber in range that please be preferred.
Comparing embodiment 4 to 8 is it is found that the weight ratio of Vitrified powder and chopped strand is limited in the preferred range of the application
Be conducive to improve the comprehensive performance of flame-proof silicon rubber.
Comparing embodiment 3 and 10 is conducive to improve it is found that the composition of Vitrified powder is limited in the preferred range of the application
The comprehensive performance of flame-proof silicon rubber.
Comparing embodiment 1 to 11 and silicon rubber control sample (sample 12), it is known that prepared using composition provided by the present application
Flame-proof silicon rubber is conducive to improve its flame retardant property.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of composition for being used to form flame-proof silicon rubber, which is characterized in that the composition include silicon rubber, Vitrified powder,
Chopped strand and fluxing agent；The diameter of the chopped strand is 5~12um, and length is 1~9mm.
2. composition according to claim 1, which is characterized in that by weight, the composition includes 100 parts of institute
State silicon rubber, 25~100 parts of the Vitrified powder, 5~40 parts of the chopped strand and 10~50 parts of the fluxing agent.
3. composition according to claim 2, which is characterized in that by weight, the composition further includes 10~40
The fire retardant and 10~20 parts of filler of part.
4. composition according to claim 3, which is characterized in that the filler includes precipitated silica and/or gas phase
Method white carbon black.
5. composition according to claim 3, which is characterized in that by weight, the composition further includes 1~5 part
Vulcanizing agent, the vulcanizing agent include 2,5- dimethyl -2,5- bis(t-butylperoxy) hexane, bis- (2, the 4- dichloros of peroxidating
Benzoyl) and one of cumyl peroxide or a variety of.
6. composition according to claim 5, which is characterized in that by weight, the composition includes 100 parts of institute
State silicon rubber, 25~70 parts of the Vitrified powder, 10~30 parts of the chopped strand, 20~35 parts of the fluxing agent, 10
~30 parts of the fire retardant, 10~15 parts of the filler and 2~4 parts of the vulcanizing agent.
7. composition according to claim 6, which is characterized in that the Vitrified powder and the weight ratio of the chopped strand are
2~5:1.
8. composition according to claim 1, which is characterized in that the chopped strand is selected from basalt fibre, carbon fiber
With one of glass fibre or a variety of.
9. composition according to claim 1, which is characterized in that the softening point of the fluxing agent is 400~900 DEG C.
10. a kind of flame-proof silicon rubber, which is characterized in that the flame-proof silicon rubber is using described in any one of claims 1 to 9
Composition is made.
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