CN113234325A - Wide-temperature-range medium-resistant rubber composite material and preparation method thereof - Google Patents
Wide-temperature-range medium-resistant rubber composite material and preparation method thereof Download PDFInfo
- Publication number
- CN113234325A CN113234325A CN202110640758.1A CN202110640758A CN113234325A CN 113234325 A CN113234325 A CN 113234325A CN 202110640758 A CN202110640758 A CN 202110640758A CN 113234325 A CN113234325 A CN 113234325A
- Authority
- CN
- China
- Prior art keywords
- composite material
- rubber composite
- rubber
- carrying
- vulcanizing
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L85/00—Compositions of macromolecular compounds obtained by reactions forming a linkage in the main chain of the macromolecule containing atoms other than silicon, sulfur, nitrogen, oxygen and carbon; Compositions of derivatives of such polymers
- C08L85/02—Compositions of macromolecular compounds obtained by reactions forming a linkage in the main chain of the macromolecule containing atoms other than silicon, sulfur, nitrogen, oxygen and carbon; Compositions of derivatives of such polymers containing phosphorus
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the field of rubber composite materials, and particularly provides a medium-resistant rubber composite material with a wide temperature range and a preparation method thereof.
Description
Technical Field
The invention belongs to the field of rubber composite materials, and particularly provides a medium-resistant rubber composite material with a wide temperature range and a preparation method thereof.
Background
With the development of sealing technology, one material may need to have two characteristics of medium resistance and wide temperature range at the same time to meet the use requirement, the medium resistance sometimes also needs to be resistant to multiple media, one rubber may only have resistance to a certain medium, and if multiple media are required to be resistant, two or more rubbers are needed to be used together. The sealing ring loses the sealing function due to embrittlement at low temperature, and the existing medium-resistant rubber sealing material mainly comprises fluororubber and hydrogenated nitrile-butadiene rubber, but the low-temperature resistance of the fluororubber and the hydrogenated nitrile-butadiene rubber is poor, and certain harsh requirements cannot be met. The service temperature of the silicone rubber is wide, but the medium resistance of the silicone rubber is poor, so that the requirement of medium resistance cannot be met.
The fluorinated polyphosphazene rubber has a fluorine-containing group, has good medium resistance, has a main chain connected by alternative phosphorus and nitrogen atoms in a single-double bond manner, has good flexibility, unobvious steric effect of a side group, has good low-temperature resistance, has a glass transition temperature of-65 ℃, has much better low-temperature resistance than that of the traditional fluororubber and hydrogenated nitrile rubber, has a maximum use temperature of 200 ℃, has excellent high-temperature resistance, but has mechanical properties and compression permanent deformation properties which cannot reach the use indexes of a sealing element, and has a poor processing technology,
how to better apply fluorinated polyphosphazene rubber to the processing process of a wide-temperature-range medium-resistant rubber material to obtain a performance material with better performance becomes one of the problems to be solved urgently in the field.
Disclosure of Invention
Aiming at various defects in the prior art, the invention provides a wide-temperature-range medium-resistant rubber composite material and a preparation method thereof, and the wide-temperature-range medium-resistant rubber composite material is prepared by taking fluorinated polyphosphazene rubber and hydrogenated nitrile rubber as raw materials and utilizing a peroxide vulcanization system.
The main principle of the invention is as follows:
the rubber material with wide temperature range and medium resistance is prepared by blending fluorinated polyphosphazene rubber serving as a main body with hydrogenated nitrile rubber and vulcanizing through a peroxide vulcanization system. The fluorinated polyphosphazene has high fluorine content, so the fluorinated polyphosphazene has good thermal property and medium resistance, and meanwhile, the fluorinated polyphosphazene has a main chain which is connected by alternating phosphorus and nitrogen atoms in a single-double bond, so the main chain has good smoothness, and the steric effect of a side group is not obvious, so the fluorinated polyphosphazene has good low-temperature resistance. The composite material is used together with hydrogenated nitrile rubber, so that the mechanical property and the compression permanent deformation property of the fluorinated polyphosphazene rubber can reach the use index of a sealing element, the processing technology of the composite material can be improved, the processing cost can be reduced, and the finally obtained medium-resistant rubber composite material with the wide temperature range has the use temperature of-50-200 ℃.
The specific technical scheme of the invention is as follows:
a wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the acrylonitrile content in the hydrogenated nitrile rubber is less than 24%; the fluorine content of the fluorinated polyphosphazene rubber is higher than 50%, and the molecular weight is higher than 14 ten thousand;
the reinforcing filler is selected from carbon black or a system combining carbon black and inorganic filler or a composition system thereof;
wherein the inorganic filler is selected from barium sulfate or calcium fluoride or other fluororubber fillers; and the carbon black cannot be selected from acid carbon blacks;
the heat stabilizer is 8 hydroxyquinoline zinc, and the effect of the heat stabilizer is best;
the acid-absorbing agent is magnesium oxide or zinc oxide or calcium hydroxide composition;
the vulcanizing agent is a peroxide vulcanizing system and is selected from bis 2, 5(2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane) or DCP or BIBP;
the co-vulcanizing agent is triallyl isocyanurate, and the effect is optimal;
in addition, the inventor also provides a preparation method of the medium-resistant rubber composite material with the wide temperature range, which comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, thinly passing raw rubber for 10 times, and mixing for later use;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
In conclusion, the rubber composite material prepared by the method can resist various media, has a wider use temperature range and better forming and processing properties, fills the blank in the field, has tensile strength of more than 6.5 and compression permanent deformation of less than 35 percent, reaches the use index of a sealing element, has good medium resistance and compression deformation at high and low temperatures of less than 35 percent, and meets the requirement of wide use temperature range.
Detailed Description
In order to better understand the invention, the following embodiments further illustrate the content of the invention, and the invention described herein is only for explaining the invention, not for limiting the invention.
Example 1
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N550; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is magnesium oxide; the vulcanizing agent is BIBP; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 6.8MPa, the elongation at break of 130 percent, the hardness of 64, the glass transition temperature of-68 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 31%, low-temperature compression set (-40 ℃ C.. times.72 h): 27%, 4609 damping fluid for war chariot: the volume change rate is 3.884%, the mass change rate is 6.591%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 5.355%, and the mass change rate was 9.232%.
The parameters show that the tensile strength of the obtained material is more than 6.5, the compression permanent deformation is less than 35 percent, the use index of the sealing element is reached, the medium resistance is good, the compression deformation at high and low temperatures is less than 35 percent, and the requirement of wide use temperature range is met.
Example 2
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N330; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is zinc oxide; the vulcanizing agent is bis 2.5; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 8MPa, the elongation at break of 110 percent, the hardness of 68, the glass transition temperature of-66 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 30%, low-temperature compression set (-40 ℃ C.. times.72 h): 29%, 4609 damping fluid for war chariot: the volume change rate is 3.658%, the mass change rate is 6.939%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 5.635%, and the mass change rate was 9.621%.
Example 3
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is 20 parts of carbon black N550 and 20 parts of carbon black N330; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is calcium oxide; the vulcanizing agent is DCP; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and half of the fully mixed reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at the initial temperature of 40 ℃ and the rotating speed of the internal mixer of 20RPM, after the torque is stabilized, adding plasticated hydrogenated nitrile rubber, carrying out internal mixing for 1 minute, after the torque is stabilized, adding the rest reinforcing filler, adding an acid absorbent and a heat stabilizer, carrying out internal mixing for 2 minutes, after the torque is stabilized, heating to 90 ℃, carrying out internal mixing for 5 minutes, taking out the lower piece, and standing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 8.6MPa, the elongation at break of 126 percent, the hardness of 73 percent, the glass transition temperature of-61 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 27%, low-temperature compression set (-40 ℃ C.. times.72 h): 30%, 4609 damping fluid for war chariot: the volume change rate is 3.535%, the mass change rate is 6.374%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 5.462%, and the mass change rate was 9.554%.
Example 4
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N550; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is 3 parts of calcium oxide and 3 parts of magnesium oxide; the vulcanizing agent is DCP; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 6.8MPa, the elongation at break of 135 percent, the hardness of 68, the glass transition temperature of-67 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 30%, low-temperature compression set (-40 ℃ C.. times.72 h): 27%, 4609 damping fluid for war chariot: the volume change rate is 3.752%, the mass change rate is 6.369%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 5.330%, and the mass change rate was 9.195%.
Example 5
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N330; the heat stabilizer is 8 hydroxyquinoline zinc; the acid scavenger is calcium hydroxide; the vulcanizing agent is BIBP; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 7.3MPa, the elongation at break of 129 percent, the hardness of 61, the glass transition temperature of-69 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 32%, low-temperature compression set (-40 ℃ C.. times.72 h): 29%, 4609 damping fluid for war chariot: the volume change rate is 3.764 percent, the mass change rate is 6.695 percent, and the mass change rate is 15# aviation hydraulic oil: the volume change rate was 5.294%, and the mass change rate was 9.207%.
Example 6
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N550; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is 3 parts of magnesium oxide and 3 parts of zinc oxide; the vulcanizing agent is bis 2.5; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 8.4MPa, the elongation at break of 137 percent, the hardness of 67 percent, the glass transition temperature of-68 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 31%, low-temperature compression set (-40 ℃ C.. times.72 h): 30%, 4609 damping fluid for war chariot: the volume change rate is 3.745%, the mass change rate is 6.863%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 5.445%, and the mass change rate was 9.531%.
Example 7
A wide temperature range medium-resistant rubber composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is 20 parts of carbon black N550 and 10 parts of barium sulfate; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is 6 parts of magnesium oxide; the vulcanizing agent is bis 2.5; the co-vulcanizing agent is TAIC;
the preparation method of the medium-resistant rubber composite material with the wide temperature range comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, and thinly passing raw rubber for 10 times;
firstly adding raw fluorinated polyphosphazene and half of the fully mixed reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at the initial temperature of 40 ℃ and the rotating speed of the internal mixer of 20RPM, after the torque is stabilized, adding plasticated hydrogenated nitrile rubber, carrying out internal mixing for 1 minute, after the torque is stabilized, adding the rest reinforcing filler, adding an acid absorbent and a heat stabilizer, carrying out internal mixing for 2 minutes, after the torque is stabilized, heating to 90 ℃, carrying out internal mixing for 5 minutes, taking out the lower piece, and standing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The wide-temperature-range medium-resistant rubber composite material obtained by the method has the following relevant properties:
the rubber material has the tensile strength of 7.1MPa, the elongation at break of 148 percent, the hardness of 66, the glass transition temperature of-67 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 29%, low-temperature compression set (-40 ℃ C.. times.72 h): 27%, 4609 damping fluid for war chariot: the volume change rate is 3.897%, the mass change rate is 7.136%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 5.742%, and the mass change rate was 9.887%.
Comparative example 1
A fluorinated polyphosphazene rubber comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N550; the heat stabilizer is 8 hydroxyquinoline zinc; the acid absorbent is magnesium oxide; the vulcanizing agent is BIBP; the co-vulcanizing agent is TAIC;
the preparation method of the fluorinated polyphosphazene rubber comprises the following steps:
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding the rest reinforcing filler after torque is stabilized, carrying out internal mixing for 2 minutes, adding an acid absorbent and a heat stabilizer after the torque is stabilized, carrying out internal mixing for 2 minutes, taking out a lower sheet, and standing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The rubber material has the tensile strength of 5.7MPa, the elongation at break of 99 percent, the hardness of 59, the glass transition temperature of-69 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 40%, low temperature compression set (-40 ℃ C.. times.72 h): 23%, 4609 damping fluid for war chariot: the volume change rate is 2.954%, the mass change rate is 6.125%, and the mass change rate is 15# aviation hydraulic oil: the volume change rate was 5.842%, and the mass change rate was 10.032%.
Compared with the rubber materials obtained in examples 1-7, the tensile strength and high-temperature compression set of the material obtained in the comparative example are obviously poor, the medium resistance is also reduced, and the mechanical property and the high-temperature compression set cannot reach the use index of the sealing element.
Comparative example 2
The hydrogenated nitrile rubber comprises the following raw materials in parts by weight:
wherein the reinforcing filler is carbon black N550; the acid absorbent is magnesium oxide; the vulcanizing agent is BIBP; the co-vulcanizing agent is TAIC;
the preparation method of the hydrogenated nitrile rubber comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, thinly passing raw rubber for 10 times, and mixing for later use;
adding raw hydrogenated nitrile rubber into an internal mixer, carrying out internal mixing for 1 minute at the initial temperature of 40 ℃ and the rotating speed of the internal mixer of 20RPM, adding an acid acceptor and a heat stabilizer after torque is stabilized, carrying out internal mixing for 2 minutes, adding a half of reinforcing filler after the torque is stabilized, carrying out internal mixing for 2 minutes, adding the rest of reinforcing filler after the torque is stabilized, carrying out internal mixing for 2 minutes, taking out a lower sheet, and standing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
The adopted vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
The rubber material has the tensile strength of 13MPa, the elongation at break of 170 percent, the hardness of 76, the glass transition temperature of-45 ℃, and the high-temperature compression permanent deformation (150 ℃ multiplied by 72 h): 25%, low-temperature compression set (-40 ℃ C.. times.72 h): 37 percent, 4609 damping fluid for a war chariot: the volume change rate is 4.526%, the mass change rate is 7.214%, and the weight ratio of No. 15 aviation hydraulic oil: the volume change rate was 4.856%, and the mass change rate was 8.754%.
Compared with the rubber materials obtained in examples 1-7, the low-temperature performance of the material obtained in the comparative example is obviously reduced, and the low-temperature use requirement under some severe conditions cannot be met.
The rubber composite material prepared by the method can resist various media, has a wider use temperature range and better forming and processing properties, fills the blank in the field, has tensile strength of more than 6.5 and compression permanent deformation of less than 35 percent, reaches the use index of a sealing element, has good medium resistance and compression deformation at high and low temperatures of less than 35 percent, and meets the requirement of wide use temperature range.
Claims (5)
1. A wide temperature range medium-resistant rubber composite material is characterized in that: the raw materials comprise the following components in parts by weight:
2. the wide temperature range, media-resistant rubber composite of claim 1, wherein:
the reinforcing filler is selected from carbon black or a system combining carbon black and inorganic filler or a composition system thereof;
wherein the inorganic filler is selected from barium sulfate or calcium fluoride or other fluororubber fillers;
the heat stabilizer is 8 hydroxyquinoline zinc;
the acid-absorbing agent is magnesium oxide or zinc oxide or calcium hydroxide or a composition thereof;
the vulcanizing agent is a peroxide vulcanizing system and is selected from bis 2, 5(2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane) or DCP or BIBP;
the co-vulcanizing agent is TAIC.
3. The wide temperature range, media-resistant rubber composite of claim 1, wherein:
the acrylonitrile content in the hydrogenated nitrile rubber is lower than 24 percent; the fluorinated polyphosphazene rubber should have a fluorine content of greater than 50% and a molecular weight of greater than 14 million.
4. The method for preparing the wide temperature range medium-resistant rubber composite material as claimed in claim 1, wherein the method comprises the following steps: the method comprises the following steps:
firstly, plasticating hydrogenated nitrile rubber on a double-roller open mill, adjusting the roller spacing of the open mill to be below 0.5mm, thinly passing raw rubber for 10 times, and mixing for later use;
firstly adding raw fluorinated polyphosphazene and a half amount of reinforcing filler into an internal mixer, carrying out internal mixing for 2 minutes at an initial temperature of 40 ℃ and a rotating speed of 20RPM, adding plasticated hydrogenated nitrile rubber after torque is stabilized, carrying out internal mixing for 1 minute, adding the rest reinforcing filler after the torque is stabilized, adding an acid absorbing agent and a heat stabilizer, carrying out internal mixing for 2 minutes, heating to 90 ℃ after the torque is stabilized, carrying out internal mixing for 5 minutes, and taking out a lower sheet and placing for 8 hours;
and then adding a vulcanizing agent and an auxiliary vulcanizing agent on a double-roller open mill, thinly passing for 5-10 times by adopting a thin passing method, and finally vulcanizing the rubber composite material after placing a sheet and standing for 24 hours to obtain the rubber composite material.
5. The method for preparing the wide temperature range medium-resistant rubber composite material according to claim 4, wherein the method comprises the following steps: the vulcanization process comprises the following steps: vulcanizing at 165 deg.C and 10Mpa with vacuum plate vulcanizer for 20 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640758.1A CN113234325A (en) | 2021-06-08 | 2021-06-08 | Wide-temperature-range medium-resistant rubber composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640758.1A CN113234325A (en) | 2021-06-08 | 2021-06-08 | Wide-temperature-range medium-resistant rubber composite material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113234325A true CN113234325A (en) | 2021-08-10 |
Family
ID=77137319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110640758.1A Pending CN113234325A (en) | 2021-06-08 | 2021-06-08 | Wide-temperature-range medium-resistant rubber composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113234325A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004099753A (en) * | 2002-09-10 | 2004-04-02 | Uchiyama Mfg Corp | Manufacturing method of hydrogenated nitrile butadiene rubber composition |
| CN103396591A (en) * | 2013-06-14 | 2013-11-20 | 中国船舶重工集团公司第七二五研究所 | Oilfield ultrahigh-pressure acid-resistant rubber seal material and preparation method thereof |
| CN107474448A (en) * | 2017-08-18 | 2017-12-15 | 镇江同立橡胶有限公司 | A kind of fluorubber, hydrogenated nitrile-butadiene rubber intermingling material |
| CN109777010A (en) * | 2019-01-15 | 2019-05-21 | 安徽大学 | A kind of low pressure becomes alloy elastic body sealing element and preparation method thereof |
| CN109852242A (en) * | 2018-12-12 | 2019-06-07 | 北京化工大学 | A kind of hydrophobic oil resistant flame-retardant anti-corrosion multifunctional coating and preparation method |
-
2021
- 2021-06-08 CN CN202110640758.1A patent/CN113234325A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004099753A (en) * | 2002-09-10 | 2004-04-02 | Uchiyama Mfg Corp | Manufacturing method of hydrogenated nitrile butadiene rubber composition |
| CN103396591A (en) * | 2013-06-14 | 2013-11-20 | 中国船舶重工集团公司第七二五研究所 | Oilfield ultrahigh-pressure acid-resistant rubber seal material and preparation method thereof |
| CN107474448A (en) * | 2017-08-18 | 2017-12-15 | 镇江同立橡胶有限公司 | A kind of fluorubber, hydrogenated nitrile-butadiene rubber intermingling material |
| CN109852242A (en) * | 2018-12-12 | 2019-06-07 | 北京化工大学 | A kind of hydrophobic oil resistant flame-retardant anti-corrosion multifunctional coating and preparation method |
| CN109777010A (en) * | 2019-01-15 | 2019-05-21 | 安徽大学 | A kind of low pressure becomes alloy elastic body sealing element and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘莉: "低温耐油橡胶的研究进展", 《弹性体》 * |
| 李冠: "耐低温橡胶的研究进展", 《弹性体》 * |
| 杨新改: "氟化聚磷腈弹性体的合成与应用", 《2012 年中国阻燃学术年会论文》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101412835B (en) | Blend of fluorubber and silastic, and preparation thereof | |
| CN103724908B (en) | Soft highly damping rubber composition and preparation method thereof | |
| CN105086299B (en) | A kind of low temperature resistant, low pressure becomes inlet manifold gasket material and preparation method thereof | |
| EP3124534B1 (en) | Hnbr composition and hnbr crosslinked body | |
| CN111004420A (en) | Low-temperature-resistant salt-fog-resistant rubber sealing material and preparation method thereof | |
| CN106566160A (en) | Preparation method of polytetrafluoroethylene sheet for automobiles | |
| CN111004460A (en) | Fluororubber material for oil seal and preparation method thereof | |
| CN107189287A (en) | A kind of seal specific rubber alloy elastic body and preparation method thereof | |
| CN103228440B (en) | laminate | |
| CN104072883A (en) | Wide-temperature-range damping material based on ethylene-propylene-diene-terpolymer rubber as well as preparation method and application of damping material | |
| CN101250300A (en) | Super high molecular weight polyethylene composite liner | |
| CN109354809B (en) | high-Shore-hardness fluororubber composition | |
| CN114395175B (en) | Wear-resistant rubber material and preparation method thereof | |
| CN113234325A (en) | Wide-temperature-range medium-resistant rubber composite material and preparation method thereof | |
| CN104829852A (en) | Preparation method of in-situ ionic crosslinked rubber | |
| CN109337259B (en) | Fluororubber composition with high Shore hardness | |
| CN114806046B (en) | Wide-temperature-range low-friction heat-tearing-resistant vinylidene fluoride rubber and preparation method thereof | |
| CN102432926B (en) | Rubber lining rubber material for corrosion resisting butterfly valve lined with rubber, and preparation method for rubber lining rubber material | |
| CN113294601B (en) | Automobile water delivery rubber pipe with wide application temperature range and preparation method thereof | |
| KR101714266B1 (en) | A rubber composition of oil seal having improved freezing resistance and a preparation thereof | |
| CN113861529A (en) | Ethanol-resistant gasoline composite rubber material and preparation method thereof | |
| CN109988348B (en) | Oil-resistant and high-temperature-resistant rubber material and preparation method and application thereof | |
| CN117209911B (en) | Ageing-resistant rubber sealing element and preparation method thereof | |
| CN112592591A (en) | Oil-resistant flame-retardant silicone rubber material | |
| CN105254934A (en) | Rubber hose material for vehicle 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 |