CN110183856A - A kind of heat conductive flame-retarding protection silicone rubber compound and preparation method thereof - Google Patents
A kind of heat conductive flame-retarding protection silicone rubber compound and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to the technical fields of silastic material, and in particular to a kind of heat conductive flame-retarding protection silicone rubber compound and preparation method thereof in power cable connection accessory.This protects the raw material of silicone rubber compound to have methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, conductive filler, silane coupling agent, silicone oil, zinc stearate, composite flame-proof filler, hardenable composite material, peroxide vulcanizing agent for the heat conductive flame-retarding in cable connector plugging member.It wherein, is that and using Siloxane-Oxyalkylene Copolymers as auxiliary material, obtained silicone rubber compound can be made to have higher tensile strength and elongation at break using methyl vinyl silicone raw rubber as major ingredient.The heat conductive flame-retarding protects silicone rubber compound by the synergistic effect between each component, has excellent thermally conductive and flame retardant property, can harden protection at high temperature, can effectively reduce accident or prevent secondary safety accident from occurring.
Description
Technical field
The present invention relates to the technical fields of silastic material, and in particular to a kind of for leading in power cable connection accessory
Hot flame protection silicone rubber compound and preparation method thereof.
Background technique
Silastic material is a kind of novel high molecular material, has been carried out largely to silastic material at home in recent years
Depth research and development and production application, silicone rubber products are widely used in the fields such as civilian, industrial, medical, military project.With domestic city
The acceleration of change process, the facilities such as various skyscrapers, supermarket, hospital, airport, sport place, matched electric power are continuously increased, silicon
Application of the rubber in power cable field is also more and more.The silicon rubber Protection Product of early stage is used in electric power facility surface and only serves
Insulation protection, heat is not easy to disperse when high temperature, or occurs that second protection cannot be played the role of when fire, exists
Applied defect.
Summary of the invention
It is an object of the present invention in view of the deficiencies of the prior art, provide a kind of heat conductive flame-retarding protection rubber composition
Object, the heat conductive flame-retarding protect silicone rubber compound to have excellent thermally conductive and flame retardant property, can harden protection at high temperature, can
It effectively reduces accident or prevents secondary safety accident from occurring.
The second object of the present invention is in view of the deficiencies of the prior art, to provide a kind of heat conductive flame-retarding protection rubber composition
The preparation method of object.
One of to achieve the goals above, the present invention adopts the following technical scheme:
A kind of heat conductive flame-retarding protection silicone rubber compound is provided, is prepared from the following raw materials in parts by weight:
Wherein, the hardenable composite material is the composition of silicon powder, clay and clay.
Preferably, a kind of heat conductive flame-retarding protects silicone rubber compound, is prepared from the following raw materials in parts by weight:
More preferably, a kind of heat conductive flame-retarding protects silicone rubber compound, by the raw material system of following parts by weight
At:
The methyl vinyl silicone raw rubber is the raw rubber with methyl blocking or ethenyl blocking, the methyl ethylene
The content of organic silicon raw rubber medium vinyl is 0.03~3.0%；
The molecular weight of the methyl vinyl silicone raw rubber is 450,000~700,000, the methyl vinyl silicone raw rubber
Fugitive constituent be 1.0%~1.5%；
The Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers.
The heat filling is one of aluminium oxide, magnesia, silicon nitride or graphene or any two or more group
Close object；
The white carbon black is that specific surface area is 100m2/ g~300m2The precipitated silica or/and gas-phase silica of/g；
The silicone oil is one of hydroxy silicon oil, methyl-silicone oil or vinyl silicone oil or any two or more combination
Object；
The composite flame-proof filler is in aluminium hydroxide, magnesium hydroxide, zinc carbonate, diphosphorus trioxide or antimony oxide
A kind of or any two or more composition；
The peroxide vulcanizing agent is cumyl peroxide, dibenzoyl peroxide, 2,4 dichlorobenzoperoxides
Or one of di-tert-butyl peroxide or any two or more composition.
To achieve the goals above two, the present invention adopts the following technical scheme:
A kind of preparation method of heat conductive flame-retarding protection silicone rubber compound is provided, comprising the following steps:
Step 1, it is dry: the composite flame-proof filler of formula ratio and hardenable composite material to be put into drying box do respectively
It is dry, to remove moisture, obtain dried powder；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder group
It is poly-；
Step 3, heat treatment: by the heat filling investment mixing plant of formula ratio, the silane that formula ratio is then added is even
Connection agent is heat-treated, cooling stand-by after be heat-treated, the heat filling that obtains that treated；
Step 4, mixing: by methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, the silicon of formula ratio
Oil and zinc stearate, which are successively put into, carries out mixing in mixer, carry out high-temperature vacuum processing again after agglomerating, obtain the good base of mixing
Plinth sizing material；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing, to promote to disperse,
Internal stress is eliminated, the good base rubber of mill is obtained；
Step 6: mixing processing: the good base rubber of mill in step 5 is sequentially added in open mill or in batch mixer
Powder, step 3 treated heat filling after step 2 grinding, finally add the peroxide vulcanizing agent of formula ratio, after mixing
Obtain the heat conductive flame-retarding protection silicone rubber compound.
In above-mentioned technical proposal, in the step 1, the temperature of the drying is 90 DEG C~110 DEG C, the drying when
Between be 3h~5h.
In above-mentioned technical proposal, in the step 3, the temperature of the heat treatment is 75 DEG C~85 DEG C, the heat treatment
Time is 40min~80min.
In above-mentioned technical proposal, in the step 4, the temperature of the high-temperature vacuum processing is 140 DEG C~160 DEG C, described
The time of high-temperature vacuum processing is 40min~80min.
In above-mentioned technical proposal, in the step 5, the mill adds man-hour requirement to adjust open mill roll spacing gap width
For 0.5mm~1.0mm.
Compared with prior art, beneficial effect is the present invention:
(1) a kind of heat conductive flame-retarding provided by the invention protects silicone rubber compound, with methyl vinyl silicone raw rubber work
For major ingredient, and using Siloxane-Oxyalkylene Copolymers as auxiliary material, obtained silicone rubber compound can be made to have higher anti-tensile strong
Degree and elongation at break；By the way that heat filling is added, to meet the thermally conductive requirement of silicone rubber compound；Silane coupling agent makes group
The inorganic filler surface closed in object wraps up one layer of organic group, to increase heat filling and methyl vinyl silicone raw rubber, gather
The blending intersolubility of ether modified polyorganosiloxane；White carbon black need to have certain specific surface area, specific surface area as reinforced filling
Too LR low reinforcing is poor, and the too high meeting of specific surface causes hybrid process difficult so that hardening effect is obvious；Silicone oil is used as plasticizer
In improvement processability, or as structuring inorganic agent, to improve the blended with substrate；Zinc stearate takes off in being primarily used to
The effect of mould agent；Composite flame-proof filler, and two or more is with there is synergistic effect, to reach optimal flameproof effect；
Hardenable composite material, which can reach a high temperature, sinters the effect of sterosome into；Peroxide vulcanizing agent can be squeezed out convenient for product
Molding or compression molding.The heat conductive flame-retarding protects silicone rubber compound by the synergistic effect between each component, has excellent
Different thermally conductive and flame retardant property, can harden protection at high temperature, can effectively reduce accident or prevent secondary safety accident from occurring.
(2) a kind of heat conductive flame-retarding provided by the invention protects silicone rubber compound, and there is preferable tensile strength, fracture to stretch
Long rate, hardness, tearing strength, thermal coefficient, heat setting effect and flame retardant rating, wherein porcelain effect is 800 DEG C of high temperature combustions
It is hardened after burning, lump does not drip.Wherein, flame retardant rating reaches the grade of UL94V-0.
(3) a kind of heat conductive flame-retarding provided by the invention protects silicone rubber compound, is by special types such as addition heat conductive flame-retardings
Filler, be prepared into thermally conductive fire prevention can reduce accident occur or realize secondary protection silastic material, be widely used in require compared with
High electric power facility field.Special silicone rubber material of the present invention is applied particularly to power cable connecting piece, in operation power process
In shield, if equipment for a long time in a high voltage state operation temperature raising can play heat spreading function, if colleague occur fire
Calamity accident can play the role of combustion, and in addition the product of high-temp combustion can be hardened quickly, play the role of second protection, and electric power is greatly improved
The safety guarantee coefficient of facility.
(4) preparation method of a kind of heat conductive flame-retarding protection silicone rubber compound provided by the invention, the present invention is for existing
The not fire-retardant or not thermally conductive equal not satisfactory situation of protection effects existing for protection silastic material is changed in power cable field
Into using the multiple working procedure that mixing, mill and mixing are processed, making each component by drying, grinding, the heat treatment to raw material
It is fully dispersed uniform, finally prepare the silicone rubber compound for meeting particular/special requirement.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
Embodiment 1.
A kind of heat conductive flame-retarding protection silicone rubber compound, is prepared from the following raw materials in parts by weight:
Wherein, hardenable composite material is the composition of silicon powder, clay and clay.
In the present embodiment, methyl vinyl silicone raw rubber is the raw rubber with methyl blocking, and methyl vinyl silicone is raw
The content of glue medium vinyl is 2.0%；
In the present embodiment, the molecular weight of methyl vinyl silicone raw rubber is 500,000, methyl vinyl silicone raw rubber
Fugitive constituent is 1.2%；
Wherein, Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers, and then can be improved by amino
Cross-linking reaction.
In the present embodiment, heat filling is aluminium oxide.
In the present embodiment, white carbon black is that specific surface area is 200m2The precipitated silica of/g.
In the present embodiment, silicone oil is hydroxy silicon oil.
In the present embodiment, composite flame-proof filler is aluminium hydroxide.
In the present embodiment, peroxide vulcanizing agent is cumyl peroxide.
A kind of preparation method of above-mentioned heat conductive flame-retarding protection silicone rubber compound, comprising the following steps:
Step 1, it is dry: the composite flame-proof filler of formula ratio and hardenable composite material to be put into drying box do respectively
It is dry, to remove moisture, obtain dried powder；In the present embodiment, dry temperature is 100 DEG C, and the dry time is 4h；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder group
It is poly-；
Step 3, heat treatment: by the heat filling investment mixing plant of formula ratio, the silane that formula ratio is then added is even
Connection agent is heat-treated, cooling stand-by after be heat-treated, the heat filling that obtains that treated；In the present embodiment, the temperature of heat treatment
Degree is 80 DEG C, and the time of heat treatment is 60min；
Step 4, mixing: by methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, the silicon of formula ratio
Oil and zinc stearate, which are successively put into, carries out mixing in mixer, carry out high-temperature vacuum processing again after agglomerating, obtain the good base of mixing
Plinth sizing material；In the present embodiment, the temperature of high-temperature vacuum processing is 150 DEG C, and the time of high-temperature vacuum processing is 60min；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing, to promote to disperse,
Internal stress is eliminated, the good base rubber of mill is obtained；Wherein, mill add man-hour requirement adjustment open mill roll spacing gap width be
0.7mm；
Step 6: mixing processing: the good base rubber of mill in step 5 is sequentially added in open mill or in batch mixer
Powder, step 3 treated heat filling after step 2 grinding, finally add the peroxide vulcanizing agent of formula ratio, after mixing
Obtain the heat conductive flame-retarding protection silicone rubber compound.
Embodiment 2.
A kind of heat conductive flame-retarding protection silicone rubber compound, is prepared from the following raw materials in parts by weight:
Wherein, hardenable composite material is the composition of silicon powder, clay and clay.
In the present embodiment, methyl vinyl silicone raw rubber is the raw rubber with ethenyl blocking, methyl vinyl silicone
The content of raw rubber medium vinyl is 0.03%；
In the present embodiment, the molecular weight of methyl vinyl silicone raw rubber is 450,000, methyl vinyl silicone raw rubber
Fugitive constituent is 1.0%；
Wherein, Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers, and then can be improved by amino
Cross-linking reaction.
In the present embodiment, heat filling is magnesia.
In the present embodiment, white carbon black is that specific surface area is 100m2The gas-phase silica of/g.
In the present embodiment, silicone oil is methyl-silicone oil.
In the present embodiment, composite flame-proof filler is magnesium hydroxide.
In the present embodiment, peroxide vulcanizing agent is dibenzoyl peroxide.
A kind of preparation method of above-mentioned heat conductive flame-retarding protection silicone rubber compound, comprising the following steps:
Step 1, it is dry: the composite flame-proof filler of formula ratio and hardenable composite material to be put into drying box do respectively
It is dry, to remove moisture, obtain dried powder；In the present embodiment, dry temperature is 90 DEG C, and the dry time is 5h；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder group
It is poly-；
Step 3, heat treatment: by the heat filling investment mixing plant of formula ratio, the silane that formula ratio is then added is even
Connection agent is heat-treated, cooling stand-by after be heat-treated, the heat filling that obtains that treated；In the present embodiment, the temperature of heat treatment
Degree is 75 DEG C, and the time of heat treatment is 80min；
Step 4, mixing: by methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, the silicon of formula ratio
Oil and zinc stearate, which are successively put into, carries out mixing in mixer, carry out high-temperature vacuum processing again after agglomerating, obtain the good base of mixing
Plinth sizing material；In the present embodiment, the temperature of high-temperature vacuum processing is 140 DEG C, and the time of high-temperature vacuum processing is 80min；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing, to promote to disperse,
Internal stress is eliminated, the good base rubber of mill is obtained；Wherein, mill add man-hour requirement adjustment open mill roll spacing gap width be
0.5mm；
Step 6: mixing processing: the good base rubber of mill in step 5 is sequentially added in open mill or in batch mixer
Powder, step 3 treated heat filling after step 2 grinding, finally add the peroxide vulcanizing agent of formula ratio, after mixing
Obtain the heat conductive flame-retarding protection silicone rubber compound.
Embodiment 3.
A kind of heat conductive flame-retarding protection silicone rubber compound, is prepared from the following raw materials in parts by weight:
Wherein, hardenable composite material is the composition of silicon powder, clay and clay.
In the present embodiment, methyl vinyl silicone raw rubber is the raw rubber with methyl blocking, and methyl vinyl silicone is raw
The content of glue medium vinyl is 3.0%；
In the present embodiment, the molecular weight of methyl vinyl silicone raw rubber is 700,000, methyl vinyl silicone raw rubber
Fugitive constituent is 1.5%；
Wherein, Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers, and then can be improved by amino
Cross-linking reaction.
In the present embodiment, heat filling is the composition of silicon nitride and graphene.
In the present embodiment, white carbon black is that specific surface area is 300m2The precipitated silica of/g and the composition of gas-phase silica.
In the present embodiment, silicone oil is the composition of methyl-silicone oil and vinyl silicone oil.
In the present embodiment, composite flame-proof filler is the composition of zinc carbonate and diphosphorus trioxide.
In the present embodiment, the group of peroxide vulcanizing agent 2,4 dichlorobenzoperoxide and di-tert-butyl peroxide
Close object.
A kind of preparation method of above-mentioned heat conductive flame-retarding protection silicone rubber compound, comprising the following steps:
Step 1, it is dry: the composite flame-proof filler of formula ratio and hardenable composite material to be put into drying box do respectively
It is dry, to remove moisture, obtain dried powder；In the present embodiment, dry temperature is 110 DEG C, and the dry time is 3h；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder group
It is poly-；
Step 3, heat treatment: by the heat filling investment mixing plant of formula ratio, the silane that formula ratio is then added is even
Connection agent is heat-treated, cooling stand-by after be heat-treated, the heat filling that obtains that treated；In the present embodiment, the temperature of heat treatment
Degree is 85 DEG C, and the time of heat treatment is 40min；
Step 4, mixing: by methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, the silicon of formula ratio
Oil and zinc stearate, which are successively put into, carries out mixing in mixer, carry out high-temperature vacuum processing again after agglomerating, obtain the good base of mixing
Plinth sizing material；In the present embodiment, the temperature of high-temperature vacuum processing is 160 DEG C, and the time of high-temperature vacuum processing is 40min；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing, to promote to disperse,
Internal stress is eliminated, the good base rubber of mill is obtained；Wherein, mill add man-hour requirement adjustment open mill roll spacing gap width be
1.0mm；
Step 6: mixing processing: the good base rubber of mill in step 5 is sequentially added in open mill or in batch mixer
Powder, step 3 treated heat filling after step 2 grinding, finally add the peroxide vulcanizing agent of formula ratio, after mixing
Obtain the heat conductive flame-retarding protection silicone rubber compound.
Embodiment 4.
A kind of heat conductive flame-retarding protection silicone rubber compound, is prepared from the following raw materials in parts by weight:
Wherein, hardenable composite material is the composition of silicon powder, clay and clay.
In the present embodiment, methyl vinyl silicone raw rubber is the raw rubber with ethenyl blocking, methyl vinyl silicone
The content of raw rubber medium vinyl is 0.5%；
In the present embodiment, the molecular weight of methyl vinyl silicone raw rubber is 500,000, methyl vinyl silicone raw rubber
Fugitive constituent is 1.1%；
Wherein, Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers, and then can be improved by amino
Cross-linking reaction.
In the present embodiment, heat filling is the composition of aluminium oxide, magnesia and silicon nitride.
In the present embodiment, white carbon black is that specific surface area is 150m2The precipitated silica 5 of/g.
In the present embodiment, silicone oil is the composition of hydroxy silicon oil, methyl-silicone oil and vinyl silicone oil.
In the present embodiment, composite flame-proof filler is the composition of zinc carbonate, diphosphorus trioxide and antimony oxide.
In the present embodiment, peroxide vulcanizing agent is cumyl peroxide, dibenzoyl peroxide and 2,4 dichloro peroxides
Change the composition of benzoyl.
A kind of preparation method of above-mentioned heat conductive flame-retarding protection silicone rubber compound, comprising the following steps:
Step 1, it is dry: the composite flame-proof filler of formula ratio and hardenable composite material to be put into drying box do respectively
It is dry, to remove moisture, obtain dried powder；In the present embodiment, dry temperature is 95 DEG C, and the dry time is 4.5h；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder group
It is poly-；
Step 3, heat treatment: by the heat filling investment mixing plant of formula ratio, the silane that formula ratio is then added is even
Connection agent is heat-treated, cooling stand-by after be heat-treated, the heat filling that obtains that treated；In the present embodiment, the temperature of heat treatment
Degree is 78 DEG C, and the time of heat treatment is 70min；
Step 4, mixing: by methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, the silicon of formula ratio
Oil and zinc stearate, which are successively put into, carries out mixing in mixer, carry out high-temperature vacuum processing again after agglomerating, obtain the good base of mixing
Plinth sizing material；In the present embodiment, the temperature of high-temperature vacuum processing is 145 DEG C, and the time of high-temperature vacuum processing is 70min；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing, to promote to disperse,
Internal stress is eliminated, the good base rubber of mill is obtained；Wherein, mill add man-hour requirement adjustment open mill roll spacing gap width be
0.6mm；
Step 6: mixing processing: the good base rubber of mill in step 5 is sequentially added in open mill or in batch mixer
Powder, step 3 treated heat filling after step 2 grinding, finally add the peroxide vulcanizing agent of formula ratio, after mixing
Obtain the heat conductive flame-retarding protection silicone rubber compound.
Embodiment 5.
A kind of heat conductive flame-retarding protection silicone rubber compound, is prepared from the following raw materials in parts by weight:
Wherein, hardenable composite material is the composition of silicon powder, clay and clay.
In the present embodiment, methyl vinyl silicone raw rubber is the raw rubber with ethenyl blocking, methyl vinyl silicone
The content of raw rubber medium vinyl is 2.5%；
In the present embodiment, the molecular weight of methyl vinyl silicone raw rubber is 600,000, methyl vinyl silicone raw rubber
Fugitive constituent is 1.4%；
Wherein, Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers, and then can be improved by amino
Cross-linking reaction.
In the present embodiment, heat filling is the composition of aluminium oxide and magnesia.
In the present embodiment, white carbon black is that specific surface area is 250m2The gas-phase silica of/g.
In the present embodiment, silicone oil is the composition of hydroxy silicon oil and methyl-silicone oil.
In the present embodiment, composite flame-proof filler is the composition of aluminium hydroxide and magnesium hydroxide.
In the present embodiment, peroxide vulcanizing agent is the composition of cumyl peroxide and dibenzoyl peroxide.
A kind of preparation method of above-mentioned heat conductive flame-retarding protection silicone rubber compound, comprising the following steps:
Step 1, it is dry: the composite flame-proof filler of formula ratio and hardenable composite material to be put into drying box do respectively
It is dry, to remove moisture, obtain dried powder；In the present embodiment, dry temperature is 105 DEG C, and the dry time is 3.5h；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder group
It is poly-；
Step 3, heat treatment: by the heat filling investment mixing plant of formula ratio, the silane that formula ratio is then added is even
Connection agent is heat-treated, cooling stand-by after be heat-treated, the heat filling that obtains that treated；In the present embodiment, the temperature of heat treatment
Degree is 82 DEG C, and the time of heat treatment is 50min；
Step 4, mixing: by methyl vinyl silicone raw rubber, Siloxane-Oxyalkylene Copolymers, white carbon black, the silicon of formula ratio
Oil and zinc stearate, which are successively put into, carries out mixing in mixer, carry out high-temperature vacuum processing again after agglomerating, obtain the good base of mixing
Plinth sizing material；In the present embodiment, the temperature of high-temperature vacuum processing is 155 DEG C, and the time of high-temperature vacuum processing is 50min；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing, to promote to disperse,
Internal stress is eliminated, the good base rubber of mill is obtained；Wherein, mill add man-hour requirement adjustment open mill roll spacing gap width be
0.9mm；
Step 6: mixing processing: the good base rubber of mill in step 5 is sequentially added in open mill or in batch mixer
Powder, step 3 treated heat filling after step 2 grinding, finally add the peroxide vulcanizing agent of formula ratio, after mixing
Obtain the heat conductive flame-retarding protection silicone rubber compound.
Measuring:
To a kind of heat conductive flame-retarding made from embodiment 1 to embodiment 5 protection silicone rubber compound carry out respectively tensile strength,
The measurement of elongation at break, hardness, tearing strength, thermal coefficient, heat setting effect and flame retardant rating.Wherein, tensile strength
Test method according to GB/T528-2009, the test method of elongation at break is according to GB/T528-2009, the test side of hardness
Method is according to GB/T531.1-2008, and the test method of tearing strength is according to GB/T529-2008, the test method root of thermal coefficient
According to GB/T10294-2008.Its measurement result refers to table 1.
1 embodiment 1 of table to embodiment 5 silicone rubber compound performance measurement table
By the determination data of above-mentioned table 1 it is found that heat conductive flame-retarding produced by the present invention protection silicone rubber compound has preferably
Tensile strength, elongation at break, hardness, tearing strength, thermal coefficient, heat setting effect and flame retardant rating.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. a kind of heat conductive flame-retarding protects silicone rubber compound, it is characterised in that: be prepared from the following raw materials in parts by weight:
Wherein, the hardenable composite material is the composition of silicon powder, clay and clay.
2. a kind of heat conductive flame-retarding according to claim 1 protects silicone rubber compound, it is characterised in that: by following parts by weight
Several raw materials are made:
3. a kind of heat conductive flame-retarding according to claim 1 protects silicone rubber compound, it is characterised in that: by following parts by weight
Several raw materials are made:
4. a kind of heat conductive flame-retarding according to claim 1 protects silicone rubber compound, it is characterised in that: the ethylene methacrylic
The organic silicon raw rubber of base is the raw rubber with methyl blocking or ethenyl blocking, the methyl vinyl silicone raw rubber medium vinyl
Content is 0.03~3.0%；
The molecular weight of the methyl vinyl silicone raw rubber is 450,000~700,000, and the methyl vinyl silicone raw rubber is waved
Sending out part is 1.0%~1.5%；
The Siloxane-Oxyalkylene Copolymers are double-end amino Siloxane-Oxyalkylene Copolymers.
5. a kind of heat conductive flame-retarding according to claim 1 protects silicone rubber compound, it is characterised in that:
The heat filling is one of aluminium oxide, magnesia, silicon nitride or graphene or any two or more composition；
The white carbon black is that specific surface area is 100m2/ g~300m2The precipitated silica or/and gas-phase silica of/g；
The silicone oil is one of hydroxy silicon oil, methyl-silicone oil or vinyl silicone oil or any two or more composition；
The composite flame-proof filler is one of aluminium hydroxide, magnesium hydroxide, zinc carbonate, diphosphorus trioxide or antimony oxide
Or any two or more composition；
The peroxide vulcanizing agent is cumyl peroxide, dibenzoyl peroxide, 2,4 dichlorobenzoperoxides or two
One of tert-butyl peroxide or any two or more composition.
6. a kind of preparation method of heat conductive flame-retarding protection silicone rubber compound, feature described in claim 1 to 5 any one
It is: the following steps are included:
Step 1, dry: the composite flame-proof filler of formula ratio and hardenable composite material are put into drying in drying box respectively, with
Moisture is removed, dried powder is obtained；
Grinding: step 2 is ground being put into grinder after powder cooling dried in step 1, to prevent powder reuniting；
Heat treatment: by the heat filling investment mixing plant of formula ratio, the silane coupling agent of formula ratio is then added in step 3
It is heat-treated, cooling stand-by after being heat-treated, the heat filling that obtains that treated；
Step 4, mixing: by the methyl vinyl silicone raw rubber of formula ratio, Siloxane-Oxyalkylene Copolymers, white carbon black, silicone oil and
Zinc stearate successively puts into and carries out mixing in mixer, carries out high-temperature vacuum processing again after agglomerating, obtains the good basic glue of mixing
Material；
Step 5, mill: the good sizing of the mixing that step 4 is obtained, further mill processing are eliminated with promoting to disperse
Internal stress obtains the good base rubber of mill；
Step 6: the good base rubber of mill in step 5 mixing processing: is sequentially added into open mill or in batch mixer step
Powder, step 3 treated heat filling after two grindings finally add the peroxide vulcanizing agent of formula ratio, make after mixing
It obtains the heat conductive flame-retarding and protects silicone rubber compound.
7. a kind of preparation method of heat conductive flame-retarding protection silicone rubber compound according to claim 6, it is characterised in that: institute
It states in step 1, the temperature of the drying is 90 DEG C~110 DEG C, and the time of the drying is 3h~5h.
8. a kind of preparation method of heat conductive flame-retarding protection silicone rubber compound according to claim 6, it is characterised in that: institute
It states in step 3, the temperature of the heat treatment is 75 DEG C~85 DEG C, and the time of the heat treatment is 40min~80min.
9. a kind of preparation method of heat conductive flame-retarding protection silicone rubber compound according to claim 6, it is characterised in that: institute
It states in step 4, the temperature of the high-temperature vacuum processing is 140 DEG C~160 DEG C, and the time of the high-temperature vacuum processing is 40min
~80min.
10. a kind of preparation method of heat conductive flame-retarding protection silicone rubber compound according to claim 6, it is characterised in that:
In the step 5, the mill adds man-hour requirement adjustment open mill roll spacing gap width to be 0.5mm~1.0mm.
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| CN116640450A (en) * | 2023-06-15 | 2023-08-25 | 安徽工业大学 | Rubber based on sulfur-containing industrial solid waste and preparation method thereof |
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