CN108624063B - Silicon sulfide rubber and preparation method thereof - Google Patents
Silicon sulfide rubber and preparation method thereof Download PDFInfo
- Publication number
- CN108624063B CN108624063B CN201810523940.7A CN201810523940A CN108624063B CN 108624063 B CN108624063 B CN 108624063B CN 201810523940 A CN201810523940 A CN 201810523940A CN 108624063 B CN108624063 B CN 108624063B
- Authority
- CN
- China
- Prior art keywords
- parts
- mass
- silicone rubber
- filler
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to a silicon sulfide rubber and a preparation method thereof, comprising the following steps: uniformly mixing an antistatic agent with a solvent to obtain an antistatic agent solution; mixing and dispersing the antistatic agent solution and the filler for 15-45 minutes, and standing for more than 24 hours to obtain a pretreated filler; adding the pretreated filler and the release agent into the silicone rubber, and mixing to obtain a rubber compound; and adding a vulcanizing agent into the rubber compound and uniformly milling to obtain the vulcanized silicone rubber. The difference between the initial volume resistivity of the vulcanized silicone rubber prepared by the invention and the volume resistivity after 180 days and 360 days is small, which shows that the attenuation of the antistatic performance is slow, the good antistatic performance can be kept in a long time, the service life is obviously prolonged, the consumption cost is reduced, the vulcanized silicone rubber is suitable for large-scale production, and obvious economic benefit can be brought.
Description
Technical Field
The invention relates to the field of rubber, in particular to vulcanized silicone rubber and a preparation method thereof.
Background
The silicone rubber has good mechanical properties, excellent air permeability, physiological inertia, weather resistance, heat resistance, cold resistance, electrical insulation performance and the like, and is widely applied to various fields of automobile accessories, electric and electrical equipment, building engineering, medical appliances, daily necessities and the like. Since silicone rubber has good electrical insulation properties, it can cause static electricity accumulation when it comes into contact with or rubs against other materials. If the accumulated static electricity is not eliminated in time, the static electricity can be adsorbed, dust is absorbed, spark discharge is caused, and even the harm of burning, explosion and the like is caused. Therefore, the silicone rubber material with excellent and durable antistatic property can effectively avoid unsafety caused by static electricity in the using process. Generally, methods for increasing the antistatic performance of silicone rubber mainly include adding conductive carbon black, surface coating or adding a surfactant, adding conductive metal or metal oxide powder, and the like, but the durability is poor, and the requirements of scenes in different fields cannot be met.
Disclosure of Invention
Therefore, a preparation method for obtaining antistatic and durable vulcanized silicone rubber is needed.
A preparation method of vulcanized silicone rubber comprises the following steps:
uniformly mixing an antistatic agent with a solvent to obtain an antistatic agent solution;
mixing and dispersing the antistatic agent solution and the filler for 15-45 minutes, and standing for more than 24 hours to obtain a pretreated filler;
adding the pretreated filler and the release agent into the silicone rubber, and mixing to obtain a rubber compound;
and adding a vulcanizing agent into the rubber compound and uniformly milling to obtain the vulcanized silicone rubber.
The preparation method of the vulcanized silicone rubber provided by the invention has the advantages that the antistatic agent and the solvent are mixed to prepare the antistatic solution, and then the antistatic solution and the filler are mixed for pretreatment and dispersion, so that the contact between the antistatic agent and the filler is increased, the physical and chemical adsorption process of the antistatic agent and the filler is easier to perform, the antistatic agent is more fully and uniformly attached to the surface of the filler after being placed at room temperature for more than 24 hours, and a better dispersion effect can be obtained in the mixing process. The pretreated filler is dispersed and aggregated in the silicone rubber to form a conductive network on a microstructure, and the dispersibility and compatibility of the antistatic agent in the silicone rubber are improved to a great extent by the pretreated filler, so that the migration of the antistatic agent is reduced to a certain extent, the durability of the antistatic effect of the silicone rubber is ensured, and the vulcanized silicone rubber obtains better and durable antistatic performance. The difference between the initial volume resistivity of the vulcanized silicone rubber prepared by the invention and the volume resistivity after 180 days and 360 days is small, which shows that the attenuation of the antistatic performance is slow, the good antistatic performance can be kept in a long time, the service life is obviously prolonged, the consumption cost is reduced, the vulcanized silicone rubber is suitable for large-scale production, and obvious economic benefit can be brought.
In one embodiment, the antistatic agent is one or more of polyethylene glycol oleate, methoxypolyethylene glycol, and methoxypolyethylene glycol-silane.
In one embodiment, the antistatic agent is polyethylene glycol oleate, methoxy polyethylene glycol and methoxy polyethylene glycol-silane, and the mass ratio of the polyethylene glycol oleate to the methoxy polyethylene glycol-silane is (4-6): (2-4): 1-3).
In one embodiment, the mixing operation is as follows: mixing for 10-30 minutes at room temperature, and then heating to 110-130 ℃ for mixing for 20-40 minutes.
In one embodiment, the method further comprises the following steps: adding Ag-SiO into the rubber compound2A nanocomposite.
In one embodiment, the silicone rubber is 100 parts by mass, the filler is 30-60 parts by mass, the antistatic agent is 1-15 parts by mass, the solvent is 1-10 parts by mass, the mold release agent is 0.1-0.5 part by mass, the vulcanizing agent is 0.5-1.5 parts by mass, and the Ag-SiO2The nano composite is 0.02-0.08 part.
In one embodiment, the filler is white carbon black, and the BET specific surface area of the white carbon black is 50m2More than g.
In one embodiment, the specific operations of the dispersion are: and dispersing the antistatic agent solution and the filler in a high-speed dispersion machine at the rotating speed of 400-1000 r/min for 15-45 minutes.
In one embodiment, the solvent is one or more of N-methylpyrrolidone, N-dimethylacetamide, tetrahydrothiophenesulfone, 1, 3-dimethyl-2-imidazolidinone, dimethylsulfoxide, and water.
The invention also provides the vulcanized silicone rubber prepared by the preparation method.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The preparation method of the vulcanized silicone rubber provided by the embodiment of the invention comprises the following steps of S1-S4:
s1, uniformly mixing the antistatic agent with the solvent to obtain the antistatic agent solution.
And S2, mixing and dispersing the antistatic agent solution and the filler for 15-45 minutes, and standing for more than 24 hours to obtain the pretreated filler.
Optionally, the antistatic agent solution is poured into the filler dispersed at a high speed, the filler is continuously dispersed for 15-45 minutes after being completely poured, and then the filler is placed for more than 24 hours to obtain the pretreated filler.
And S3, adding the pretreated filler and the release agent into the silicone rubber, and mixing to obtain a rubber compound.
And S4, adding a vulcanizing agent into the rubber compound and uniformly mixing to obtain the vulcanized silicone rubber.
According to the preparation method of the vulcanized silicone rubber, the antistatic agent and the solvent are mixed to prepare the antistatic solution, and then the antistatic solution and the filler are mixed to carry out pretreatment dispersion, so that the contact between the antistatic agent and the filler is increased, the physical and chemical adsorption process of the antistatic agent and the filler is easier to carry out, the antistatic agent is placed at room temperature for more than 24 hours, the antistatic agent is more fully and uniformly attached to the surface of the filler, and a better dispersion effect can be obtained in the mixing process. The pretreated filler is dispersed and aggregated in the silicone rubber to form a conductive network on a microstructure, and the dispersibility and compatibility of the antistatic agent in the silicone rubber are improved to a great extent by the pretreated filler, so that the migration of the antistatic agent is reduced to a certain extent, the durability of the antistatic effect of the silicone rubber is ensured, and the vulcanized silicone rubber obtains better and durable antistatic performance. The difference between the initial volume resistivity of the vulcanized silicone rubber prepared by the invention and the volume resistivity after 180 days and 360 days is small, which shows that the attenuation of the antistatic performance is slow, the good antistatic performance can be kept in a long time, the service life is obviously prolonged, the consumption cost is reduced, the vulcanized silicone rubber is suitable for large-scale production, and obvious economic benefit can be brought.
Specifically, the antistatic agent is one or more of polyethylene glycol oleate, methoxy polyethylene glycol and methoxy polyethylene glycol-silane. The high-temperature-resistant polyether polymer is selected as an antistatic agent, and can be dispersed more effectively by being fully mixed with filler powder, fully attached to the surface of the filler, and better in compatibility. Preferably, the antistatic agent is polyethylene glycol oleate, methoxy polyethylene glycol and methoxy polyethylene glycol-silane in a mass ratio of (4-6): 2-4): 1-3.
In one embodiment, the specific operations of the dispersion are: and dispersing the antistatic agent solution and the filler in a high-speed dispersion machine for 15-45 minutes at the rotating speed of 400-1000 r/min.
In one embodiment, the mixing operation is as follows: mixing for 10-30 minutes at room temperature, and then heating to 110-130 ℃ for mixing for 20-40 minutes. Thus, the chemical reaction can be promoted, the microscopic combination of the crude rubber molecules of the silicon rubber and other components is facilitated, the mechanical property of the vulcanized silicon rubber is further improved, and then the temperature is raised to remove certain small molecular compounds, such as solvents and the like.
In one embodiment, the method further comprises the following steps: adding Ag-SiO into the rubber compound2Nanocomposites, Ag-SiO2The particle size of the nano composite is 40-50 nm, and the loading capacity of Ag is 10-14%. Ag-SiO2The nano-composite is safe, nontoxic and good in antibacterial effect, can be added into vulcanized silicone rubber in a certain amount to improve the antibacterial performance of the vulcanized silicone rubber without generating other adverse effects, and can meet the requirements of rubber materials in contact with human bodies. Optionally, a silane coupling agent and a structural control agent are also added to the pretreated filler.
Optionally, by mass, 100 parts of silicone rubber, 30-60 parts of filler, 1-15 parts of antistatic agent, 1-10 parts of solvent, 0.1-0.5 part of release agent, 0.5-1.5 parts of vulcanizing agent, 0-3 parts of silane coupling agent, 0-8 parts of structural control agent, and 0-8 parts of Ag-SiO2The nano composite is 0.02-0.08 part. Preferably, by mass, 100 parts of silicone rubber, 30-60 parts of filler, 4-12 parts of antistatic agent, 3-10 parts of solvent, 0.1-0.3 part of release agent, 0.5-1.5 parts of vulcanizing agent, 0.5-3 parts of silane coupling agent, 2-4 parts of structural control agent, Ag-SiO2The nano composite is 0.02-0.08 part.
In one embodiment, the silicone rubber is a methyl vinyl silicone rubber or a dimethyl silicone rubber, preferably a methyl vinyl silicone rubber.
Optionally, the silane coupling agent is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, and dimethyldimethoxysilane.
In one embodiment, the release agent is one of calcium stearate, zinc stearate, and barium stearate, preferably zinc stearate.
Optionally, the solvent is one or more of polar solvents such as N-methylpyrrolidone, N-dimethylacetamide, tetrahydrothiophenesulfone, 1, 3-dimethyl-2-imidazolidinone, dimethylsulfoxide, and water, preferably N-methylpyrrolidone or water.
In one embodiment, the vulcanizing agent is one or more of dicumyl peroxide, 2, 4-dichlorobenzoyl peroxide, and 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane.
In one embodiment, the filler is fumed silica or precipitated silica, and the BET specific surface area of the silica is 50m2A total of 100 to 300m, preferably2The amount of the antistatic agent is/g, which is favorable for better dispersion and adhesion of the antistatic agent.
In one embodiment, the structural control agent is a hydroxyl terminated polysiloxane having a viscosity of 10 to 50cps and a hydroxyl content of 6 to 10%.
The invention also provides the vulcanized silicone rubber prepared by the preparation method.
The following are specific examples.
Example 1
Weighing 90 parts of methyl vinyl silicone rubber and 10 parts of dimethyl silicone rubber, wherein the BET specific surface area is 170m248 parts of fumed silica per gram, 6 parts of polyethylene glycol oleate, 4 parts of water, 1.5 parts of dimethyl dimethoxy silane, 2.2 parts of hydroxyl-terminated polysiloxane, and Ag-SiO20.05 part of nano composite (the particle diameter is 46nm, the loading amount of Ag is 12 percent), 0.3 part of zinc stearate and 1.2 parts of dipenta vulcanizing agent (2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane).
Evenly mixing polyethylene glycol oleate with water to prepare an antistatic agent solution, pouring the antistatic agent solution into fumed silica, then dispersing for 30min by using a high-speed dispersion machine at 800r/min, and standing for more than 24h at normal temperature after dispersion is completed to obtain the pretreated filler. Adding methyl vinyl silicone rubber, dimethyl dimethoxy silane, hydroxyl-terminated polysiloxane and Ag-SiO into a kneader2Adding the nano composite and zinc stearate in batches, uniformly kneading, mixing for 20min at room temperature, then heating to 120 ℃, mixing for 30min, and discharging to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Comparative example 1
The formulation of this comparative example is the same as example 1, except that the preparation method is different: adding methyl vinyl silicone rubber, dimethyl dimethoxy silane, oleic acid polyethylene glycol ester and Ag-SiO into a kneader2Adding the nano composite, water, hydroxyl-terminated polysiloxane and zinc stearate into fumed silica in batches, kneading uniformly, mixing at room temperature for 20min, then heating to 120 ℃, mixing for 30min, and discharging to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Example 2
Weighing 100 parts of methyl vinyl silicone rubber, wherein the BET specific surface area is 200m245 parts of white carbon black by precipitation method, 4 parts of polyethylene glycol oleate and 4 parts of methoxy polyethylene glycol-silane5 parts of N-methyl pyrrolidone, 1.2 parts of vinyl trimethoxy silane, 1.8 parts of hydroxyl-terminated polysiloxane and Ag-SiO20.04 part of nano composite (the grain diameter is 46nm, the loading amount of Ag is 12 percent), 0.3 part of zinc stearate and 1.2 parts of bis-penta vulcanizing agent.
Evenly mixing polyethylene glycol oleate, methoxy polyethylene glycol-silane and N-methyl pyrrolidone to prepare antistatic agent solution, pouring the antistatic agent solution into precipitated white carbon black, then dispersing for 30min by using a high-speed dispersion machine at 800r/min, and standing for more than 24h at normal temperature after dispersion is finished to obtain the pretreated filler. Adding methyl vinyl silicone rubber, vinyl trimethoxy silane, hydroxyl-terminated polysiloxane and Ag-SiO into a kneader2Adding the nano composite and zinc stearate in batches, uniformly kneading, mixing for 20min at room temperature, then heating to 120 ℃, mixing for 30min, and discharging to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Comparative example 2
The formulation of this comparative example is the same as example 2, except that the preparation method is different: adding methyl vinyl silicone rubber, vinyl trimethoxy silane, polyethylene glycol oleate, methoxy polyethylene glycol-silane and Ag-SiO into a kneading machine2Adding the nano composite, N-methyl pyrrolidone, hydroxyl-terminated polysiloxane and zinc stearate in batches, uniformly kneading the mixture with precipitated white carbon black, mixing the mixture at room temperature for 20min, then heating the mixture to 120 ℃, mixing the mixture for 30min, and discharging the mixture to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Example 3
Weighing 100 parts of methyl vinyl silicone rubber, wherein the BET specific surface area is 170m260 parts of precipitated silica, 6 parts of polyethylene glycol oleate, 4 parts of methoxy polyethylene glycol, 8 parts of N-methyl pyrrolidone, 2 parts of dimethyl dimethoxy silane, 2 parts of hydroxyl-terminated polysiloxane, and Ag-SiO20.06 part of nano composite (the particle size is 46nm, the loading amount of Ag is 12%), 0.3 part of zinc stearate and 1.2 parts of bis-penta vulcanizing agent.
Mixing polyethylene glycol oleate and methoxypolyethylene glycolAnd uniformly mixing the solution and N-methyl pyrrolidone to prepare an antistatic agent solution, pouring the antistatic agent solution into precipitated white carbon black, dispersing for 30min at a speed of 800r/min by using a high-speed dispersion machine, and standing for more than 24h at normal temperature after dispersion is finished to obtain the pretreated filler. Adding methyl vinyl silicone rubber, dimethyl dimethoxy silane, hydroxyl-terminated polysiloxane and Ag-SiO into a kneader2Adding the nano composite and zinc stearate in batches, uniformly kneading, mixing for 20min at room temperature, then heating to 120 ℃, mixing for 30min, and discharging to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Comparative example 3
This comparative example is the same formulation as example 3, except that the preparation method is different: adding methyl vinyl silicone rubber, dimethyl dimethoxy silane, oleic acid polyethylene glycol ester, methoxy polyethylene glycol and Ag-SiO into a kneader2Adding the nano composite, N-methyl pyrrolidone, hydroxyl-terminated polysiloxane and zinc stearate in batches, uniformly kneading the mixture with precipitated white carbon black, mixing the mixture at room temperature for 20min, then heating the mixture to 120 ℃, mixing the mixture for 30min, and discharging the mixture to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Example 4
Weighing 100 parts of methyl vinyl silicone rubber, wherein the BET specific surface area is 300m250 parts of precipitated silica, 5 parts of polyethylene glycol oleate, 3 parts of methoxy polyethylene glycol, 2 parts of methoxy polyethylene glycol-silane, 5 parts of N-methyl pyrrolidone, 4 parts of water, 2 parts of vinyl triethoxysilane, 1 part of hydroxyl-terminated polysiloxane and Ag-SiO20.08 part of nano composite (the grain diameter is 46nm, the loading amount of Ag is 12 percent), 0.3 part of zinc stearate and 1.2 parts of bis-penta vulcanizing agent.
Evenly mixing polyethylene glycol oleate, methoxy polyethylene glycol-silane, N-methyl pyrrolidone and water to prepare antistatic agent solution, pouring the antistatic agent solution into precipitated white carbon black, then dispersing for 30min by using a high-speed dispersion machine at 800r/min, and standing for more than 24h at normal temperature after the dispersion is finished to obtain the pretreated filler. Adding into a kneaderMethyl vinyl silicone rubber, vinyl triethoxysilane, hydroxyl-terminated polysiloxane, Ag-SiO2Adding the nano composite and zinc stearate in batches, uniformly kneading the mixture, mixing the mixture at room temperature for 20min, then heating the mixture to 130 ℃, mixing the mixture for 30min, and discharging the mixture to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Comparative example 4
This comparative example is the same formulation as example 4, except that the preparation method is different: adding methyl vinyl silicone rubber, vinyl triethoxysilane, polyethylene glycol oleate, methoxy polyethylene glycol-silane, methoxy polyethylene glycol, Ag-SiO into a kneading machine2Adding the nano compound, N-methyl pyrrolidone, water, hydroxyl-terminated polysiloxane and zinc stearate in batches, uniformly kneading the mixture with precipitated white carbon black, mixing the mixture at room temperature for 20min, then heating the mixture to 130 ℃, mixing the mixture for 30min, and discharging the mixture to obtain the rubber compound. And adding 1.2 parts of dipenta-vulcanizing agent into the rubber compound on an open mill, and uniformly milling to obtain the silicon sulfide rubber.
Volume resistivity tests are carried out on the vulcanized silicone rubbers prepared in the embodiments 1-4 and the comparative examples 1-4, and the test method refers to GB/T1410-.
TABLE 1
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The preparation method of the vulcanized silicone rubber is characterized by comprising the following steps:
uniformly mixing an antistatic agent with a solvent to obtain an antistatic agent solution;
mixing and dispersing the antistatic agent solution and the filler for 15-45 minutes, and standing for more than 24 hours to obtain a pretreated filler;
adding the pretreated filler and the release agent into the silicone rubber, and mixing to obtain a rubber compound;
adding a vulcanizing agent into the rubber compound and uniformly milling to obtain the vulcanized silicone rubber;
the antistatic agent is one or more of polyethylene glycol oleate, methoxy polyethylene glycol and methoxy polyethylene glycol-silane;
the solvent is one or more of N-methyl pyrrolidone, N-dimethylacetamide, tetrahydrothiophene sulfone, 1, 3-dimethyl-2-imidazolidinone, dimethyl sulfoxide and water.
2. The method according to claim 1, wherein the antistatic agent is polyethylene glycol oleate, methoxy polyethylene glycol and methoxy polyethylene glycol-silane in a mass ratio of (4-6): 2-4: (1-3).
3. The preparation method according to claim 1, wherein the mixing is specifically performed by: mixing for 10-30 minutes at room temperature, and then heating to 110-130 ℃ for mixing for 20-40 minutes.
4. The method of claim 1, further comprising the steps of: adding Ag-SiO into the rubber compound2A nanocomposite.
5. The method according to claim 4, wherein the silicone rubber is 100 parts by mass, the filler is 30 to 60 parts by mass, the antistatic agent is 1 to 15 parts by mass, the solvent is 1 to 10 parts by mass, the mold release agent is 0.1 to 0.5 part by mass, the vulcanizing agent is 0.5 to 1.5 parts by mass, and the Ag-SiO2The nano composite is 0.02-0.08 part.
6. The preparation method according to claim 4, wherein a silane coupling agent and a structural control agent are added to the pretreated filler, wherein the silicone rubber is 100 parts by mass, the filler is 30-60 parts by mass, the antistatic agent is 4-12 parts by mass, the solvent is 3-10 parts by mass, the mold release agent is 0.1-0.3 part by mass, the vulcanizing agent is 0.5-1.5 parts by mass, the silane coupling agent is 0.5-3 parts by mass, the structural control agent is 2-4 parts by mass, and the Ag-SiO2The nano composite is 0.02-0.08 part.
7. The preparation method according to claim 1, wherein the filler is white carbon black having a BET specific surface area of 50m2More than g.
8. The method according to any one of claims 1 to 7, wherein the dispersion is carried out by: and dispersing the antistatic agent solution and the filler in a high-speed dispersion machine at the rotating speed of 400-1000 r/min for 15-45 minutes.
9. A vulcanized silicone rubber produced by the production method according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810523940.7A CN108624063B (en) | 2018-05-28 | 2018-05-28 | Silicon sulfide rubber and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810523940.7A CN108624063B (en) | 2018-05-28 | 2018-05-28 | Silicon sulfide rubber and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108624063A CN108624063A (en) | 2018-10-09 |
| CN108624063B true CN108624063B (en) | 2020-12-01 |
Family
ID=63690472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810523940.7A Active CN108624063B (en) | 2018-05-28 | 2018-05-28 | Silicon sulfide rubber and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108624063B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109722034A (en) * | 2018-12-12 | 2019-05-07 | 广东聚合科技股份有限公司 | A kind of antistatic silicone rubber foamed material and preparation method thereof |
| CN113337118A (en) * | 2021-04-30 | 2021-09-03 | 深圳市飞荣达科技股份有限公司 | Permanent antistatic silica gel and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05262984A (en) * | 1992-03-23 | 1993-10-12 | Nippon Zeon Co Ltd | Silicone rubber composition |
| CN103589165A (en) * | 2013-10-15 | 2014-02-19 | 昆山市奋发绝缘材料有限公司 | Antistatic insulating material and preparation method thereof |
| CN104098904A (en) * | 2014-07-10 | 2014-10-15 | 常州大学 | Light-colored anti-static silicone rubber and preparation method thereof |
| CN104650723A (en) * | 2015-02-02 | 2015-05-27 | 安徽枞阳县渡江充气设备制造有限公司 | Mildew-proof anti-static waterproof paint and preparation method thereof |
| CN104781344A (en) * | 2012-11-05 | 2015-07-15 | 迈图高新材料日本合同公司 | Thermosetting silicone rubber composition |
| CN104987723A (en) * | 2015-06-05 | 2015-10-21 | 安徽雪城超细碳酸钙有限公司 | Modified calcium carbonate with good antistatic effect and preparation method thereof |
| CN105086470A (en) * | 2015-09-11 | 2015-11-25 | 深圳市新纶科技股份有限公司 | Antistatic silicon rubber and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001247714A (en) * | 2000-03-08 | 2001-09-11 | Shin Etsu Chem Co Ltd | Electrically conductive filler |
-
2018
- 2018-05-28 CN CN201810523940.7A patent/CN108624063B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05262984A (en) * | 1992-03-23 | 1993-10-12 | Nippon Zeon Co Ltd | Silicone rubber composition |
| CN104781344A (en) * | 2012-11-05 | 2015-07-15 | 迈图高新材料日本合同公司 | Thermosetting silicone rubber composition |
| CN103589165A (en) * | 2013-10-15 | 2014-02-19 | 昆山市奋发绝缘材料有限公司 | Antistatic insulating material and preparation method thereof |
| CN104098904A (en) * | 2014-07-10 | 2014-10-15 | 常州大学 | Light-colored anti-static silicone rubber and preparation method thereof |
| CN104650723A (en) * | 2015-02-02 | 2015-05-27 | 安徽枞阳县渡江充气设备制造有限公司 | Mildew-proof anti-static waterproof paint and preparation method thereof |
| CN104987723A (en) * | 2015-06-05 | 2015-10-21 | 安徽雪城超细碳酸钙有限公司 | Modified calcium carbonate with good antistatic effect and preparation method thereof |
| CN105086470A (en) * | 2015-09-11 | 2015-11-25 | 深圳市新纶科技股份有限公司 | Antistatic silicon rubber and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108624063A (en) | 2018-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102234427B (en) | Silicone rubber composition and preparation method of silicone rubber | |
| CN109135299B (en) | Bi-component flame-retardant liquid silicone rubber for insulator and preparation method thereof | |
| CN108624063B (en) | Silicon sulfide rubber and preparation method thereof | |
| WO2013026331A1 (en) | Rtv anti-pollution flashover coating and preparation method therefor | |
| KR20170104548A (en) | Use of Silicone Rubber Composition for Insulator Manufacturing for High Voltage DC Application | |
| CN110819011A (en) | Ethylene-propylene-diene monomer insulating rubber material and preparation method thereof | |
| CN106751911A (en) | Soft high-strength insulating silicon rubber and preparation method thereof | |
| CN109608866B (en) | Heat-conducting thermoplastic dynamic vulcanized silicone rubber and preparation method thereof | |
| CN103408948A (en) | Rubber composition and application thereof | |
| CN112646294B (en) | Fluororubber/silicone rubber blend and preparation method thereof | |
| CN113337118A (en) | Permanent antistatic silica gel and preparation method thereof | |
| CN112210215A (en) | Low-tensile permanent deformation conductive silicone rubber and preparation method thereof | |
| CN111019520B (en) | Low-density flame-retardant wear-resistant long-acting anti-pollution flashover coating and preparation method thereof | |
| CN112920765B (en) | Acetone-removing type organic silicon sealant and preparation method thereof | |
| TWI415900B (en) | Condensation reaction hardening type silicone rubber composition | |
| CN117511496A (en) | Long-acting mildew-proof neutral silicone sealant and preparation method thereof | |
| CN112251139A (en) | Fire-resistant flame-retardant liquid polyorganosiloxane composition | |
| CN116333500A (en) | Low-density high-modulus organic silicon composite material and preparation method and application thereof | |
| CN114874496A (en) | High-strength low-curing-shrinkage silicone rubber and preparation method thereof | |
| CN111518468B (en) | Polyamide-imide varnish, and preparation method and application thereof | |
| CA2000788A1 (en) | Acrylic rubber composition | |
| JP2005089587A (en) | Silicone rubber composition for wire-coating | |
| CN111019355A (en) | High-temperature-resistant silicon rubber | |
| JP3277758B2 (en) | Silicone rubber composition for insulator | |
| CN111690260A (en) | Silicon rubber for rubber roller with high adhesion to metal and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 528437 Torch Development Zone, Zhongshan, Guangdong, No. two along Jiangxi road. Applicant after: Guangdong poly Technology Co.,Ltd. Address before: 528437 Torch Development Zone, Zhongshan, Guangdong, No. two along Jiangxi road. Applicant before: Guangdong Polysil Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528437 No. 1, Jiangxi Second Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: Aiken silicone (Guangdong) Co.,Ltd. Address before: 528437 No. 1, Jiangxi Second Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: Guangdong poly Technology Co.,Ltd. |