CN101353454A - Silicon carbide rubber wear-resistant material and preparation thereof - Google Patents
Silicon carbide rubber wear-resistant material and preparation thereof Download PDFInfo
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- CN101353454A CN101353454A CNA200810151003XA CN200810151003A CN101353454A CN 101353454 A CN101353454 A CN 101353454A CN A200810151003X A CNA200810151003X A CN A200810151003XA CN 200810151003 A CN200810151003 A CN 200810151003A CN 101353454 A CN101353454 A CN 101353454A
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Abstract
The invention discloses a carborundum rubber wear resistant material and a preparation method thereof. A certain weight portions of natural rubber and/or synthetic rubber, aging inhibitor, accelerant, vulcanizator, plugging compound, resin acceptor and toluol are carried out the surface chemical treatment, rubber softening, compounding and vulcanization by carborundum, then the carborundum rubber wear resistant material is obtained. The aging inhibitor is 2, 2, 4-trimethyl-dihyaroquinoline polymer; the accelerant is the mixture of 2-thiol group benzothiazole, zinc oxide and stearic acid; the vulcanizator is sulfur; the plugging compound is the mixture of Sic, carbon soot and nano-white carbon black with the grain diameter smaller than 50 micron; the resin acceptor is silane coupling agent. The carborundum rubber wear resistant material of the invention has good wearing resistance and simple process, reduces rubber abrasion, improves the service life of the rubber, reduces the use amount of the rubber and decreases the industrial cost of the rubber production.
Description
Technical field
The present invention relates to a kind of rubber wear-resistant material and preparation method thereof, particularly relate to a kind of silicon carbide rubber wear-resistant material and preparation method thereof.
Background technology
World rubber industry output has reached sizable scale, and year consumption glue amount is near 1,700 ten thousand tons.Along with the rubber market globalization, market competition fierce further, environmental requirement is harsh day by day, and less energy-consumption, low material consumption, technical need is more urgent cheaply.Therefore, thus the wear resistance that we improve rubber by the blend of using natural rubber and silicon carbide reduces the work-ing life of its loss in use with the raising rubber product.If make the abradability of elastomeric material improve 10%, then the life-span of rubber products such as the tire made from it, travelling belt will be improved 5%-10%.Market analysis shows: modified rubber is used for particular surroundings and high-tech art field more.If this elastomeric material with excellent properties can be applied to each link of national product life, the energy-saving and cost-reducing aspect of living in of industrial production and people is improved greatly, vast potential for future development is arranged.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of silicon carbide rubber wear-resistant material and preparation method thereof is provided, to increase the wear resistance of rubber, reduce the rubber loss, improve the work-ing life of rubber, minimizing reduces rubber production industrial cost to the usage quantity of rubber.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of silicon carbide rubber wear-resistant material is characterized in that being made up of the raw material of following weight part:
Rubber 18-36 anti-aging agent 0.2-0.8 promotor 1-3 vulcanizing agent 0.5-1.5
Stopping composition 10-22 coupling agent 2-10 toluene 1-6;
Described rubber is natural rubber, synthetic rubber or mass percent are 1: 1 natural rubber and elastomeric mixture, described anti-aging agent is 2,2,4-trimethylammonium-dihyaroquinoline polymer, described promotor is the 2-thiol benzothiazole, zinc oxide and stearic mixture, described 2-thiol benzothiazole, zinc oxide and stearic mass percent are 1-3: 10: 1-2, described vulcanizing agent is a sulphur, described stopping composition is a particle diameter less than 50 microns SiC, the mixture of carbon black and Nano carbon white, the mass percent of described carbon black and silicon carbide mixture and white carbon black is 4: 1, wherein the mass percent of carbon black and silicon carbide is 2-6: 1, and described coupling agent is a silane coupling agent.
Above-mentioned silane coupling agent is a vinyltriethoxysilane.
Another object of the present invention provides a kind of preparation method of silicon carbide rubber wear-resistant material, it is characterized in that may further comprise the steps:
The chemical conversion treatment of step 1:SiC: SiC and toluene are contained in the back adding silane coupling agent that stirs in the reactor, and reacted 4-6 hour under the situation of feeding nitrogen protection in described reactor, temperature of reaction 40-80 ℃, after reaction finishes, reaction product after filtration, acetone soaks and suction filtration, in vacuum drying oven,, obtain modification SiC micro mist in 80-110 ℃ of following vacuum-drying;
Step 2: rubber plastic steelmaking: refining glue finished after 15-25 minute in the glue refining machine with sending into after the rubber fragmentation, and the sheet rubber placement that forms of plasticating was waited for mixing in 1-3 hour;
Step 3: mixing: add promotor 2-thiol benzothiazole, zinc oxide and stearic acid in the sheet rubber that forms of in step 2, plasticating, anti-aging agent 2,2, the mixture of 4-trimethylammonium-dihyaroquinoline polymer and Nano carbon white, repeatedly thin-pass 8-12 all over after stop, and the glue furnacing temperature of control glue refining machine is 40-60 ℃, add behind the modification SiC micro mist in the step 1 thin-pass 3-5 time, it is mixing and thin-pass 3-5 time to add carbon black subsequently, add the vulcanizing agent thin-pass then, mix back gained sizing material and treat the sulfuration use;
Step 4: sulfuration: the sizing material of mixing gained in the step 3 is pressed into the thin slice of 4-8 millimeter, puts into vulcanizer and vulcanize, promptly make silicon carbide rubber wear-resistant material.
Sulfurized curing temperature described in the above-mentioned steps 4 is 120-160 ℃, and sulfide stress is 6-9Mpa, and curing time is 15-25 minute.
The present invention compared with prior art has the following advantages: the wear resistance of the silicon carbide rubber wear-resistant material of the present invention's preparation is good, technology is simple, has reduced the rubber loss, has improved the work-ing life of rubber, reduced usage quantity, reduced the industrial cost of rubber production rubber.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Embodiment 1:
The chemical conversion treatment of step 1:SiC
It with particle diameter 20 microns (volume 5.6 * 10
-4Cubic meter) 1.8 kilograms and 1.8 kilograms toluene of SiC (silicon carbide) are contained in the 2.7 kilograms of silane coupling agent vinyl triethoxyl silanes of back adding that stir in the reactor; and under the situation of reactor feeding nitrogen protection, reacted 4 hours; 40 ℃ of temperature of reaction; after reaction finishes; reaction product after filtration, acetone soaks and suction filtration, obtains modification SiC micro mist 2.7-3.3 kilograms in 110 ℃ of following vacuum-dryings in vacuum drying oven.
Step 2: rubber plastic steelmaking
Refined glue 15 minutes with sending into after 18 kilograms natural rubbers or the synthetic rubber fragmentation in the glue refining machine, the sheet rubber placement that forms of plasticating was waited for mixing in 3 hours.
Step 3: mixing
In the sheet rubber that forms of plasticating, add 0.09 kilogram of promotor 2-thiol benzothiazole, 0.27 kilogram of anti-aging agent 2,2, the mixture of 4-trimethylammonium-dihyaroquinoline polymer, 0.09 kilogram of stearic acid, 0.9 kilogram of zinc oxide and 2.16 kilograms of white carbon blacks, repeatedly thin-pass 8-12 all over after stop, and 40-60 ℃ of glue furnacing temperature of control, add behind the modification SiC micro mist in the step 1 thin-pass 3-5 time, mixing and the thin-pass several of carbon black that adds 6.84 kilograms subsequently, the vulcanizing agent-sulphur thin-pass that adds 0.54 kilogram before the sulfuration mixes sizing material.
Step 4: sulfuration
The sizing material of mixing gained is pressed into 4 millimeters thin slice, puts into vulcanizer and vulcanize.Cure conditions: 120 ℃ of curing temperatures, sulfide stress 6Mpa, curing time 25 minutes promptly make silicon carbide rubber wear-resistant material (6.9 square metres of the total areas, its thickness are 4 millimeters).
The tensile strength of present embodiment silicon carbide rubber wear-resistant material is that 11-18MPa, elongation at break are 20%-40%, Akron abrasion loss (cm
2) 0.05-0.08g.This shows that under the situation that parameters such as tensile strength, elongation after fracture meet the demands, Akron abrasion loss has nearly reduced by 20%, makes the wear resisting property of rubber increase substantially.
Embodiment 2:
The chemical conversion treatment of step 1:SiC
(volume is 9 * 10 with 3 kilograms
-4Cubic meter) particle diameter is that 40 microns SiC and 3 kilograms of toluene are contained in the back that stirs in the reactor and add 4.4 kilograms of silane coupling agent vinyl triethoxyl silanes; and under the situation of reactor feeding nitrogen protection, reacted 5 hours; 60 ℃ of temperature of reaction; after reaction finishes; product after filtration, acetone soaks, suction filtration, obtains modification SiC micro mist 4-4.5 kilograms in 90 ℃ of following vacuum-dryings in vacuum drying oven.
Step 2: rubber plastic steelmaking
Refined glue 20 minutes with sending into after 25 kilograms natural rubbers or the synthetic rubber fragmentation in the glue refining machine, the sheet rubber placement that forms of plasticating was waited for mixing in 3 hours.
Step 3: mixing
In the sheet rubber that forms plasticating, add 0.125 kilogram of promotor 2-thiol benzothiazole, 0.375 kilogram of anti-aging agent 2,2, the mixture of 4-trimethylammonium-dihyaroquinoline polymer, 0.125 kilogram of stearic acid, 1.25 kilograms of zinc oxide and 3 kilograms of white carbon blacks, repeatedly thin-pass 8-12 all over after stop and controlling glue furnacing temperature 40-60 ℃, add behind the silicon carbide of chemical modification in the step 1 thin-pass 3-5 time, mixing and the thin-pass several of carbon black that adds 9 kilograms subsequently, the vulcanizing agent-sulphur thin-pass that adds 0.8 kilogram before the sulfuration mixes sizing material.
Step 4: sulfuration
The sizing material of mixing gained is pressed into 8 millimeters thin slice, puts into vulcanizer and vulcanize.Cure conditions: 140 ℃ of pressure 7.5Mpa of temperature, curing time 20 minutes promptly make silicon carbide rubber wear-resistant material (9.8 square metres of the total areas, its thickness are 4 millimeters).
The tensile strength of present embodiment silicon carbide rubber wear-resistant material is that 11-18MPa, elongation at break are 20%-40%, Akron abrasion loss (cm
2) 0.05-0.08g.This shows that under the situation that parameters such as tensile strength, elongation after fracture meet the demands, Akron abrasion loss has nearly reduced by 20%, makes the wear resisting property of rubber increase substantially.
Embodiment 3:
The chemical conversion treatment of step 1:SiC
(volume is 1.5 * 10 with 5 kilograms
-3Cubic meter) particle diameter is that 28 microns SiC and 5 kilograms of toluene are contained in the back that stirs in the reactor and add 7.5 kilograms of silane coupling agent vinyl triethoxyl silanes; and under the situation of reactor feeding nitrogen protection, reacted 6 hours; 50 ℃ of temperature of reaction; after reaction finishes; reaction product after filtration, acetone soaks, suction filtration, obtains modification SiC micro mist 6.8-7.4 kilograms in 80 ℃ of following vacuum-dryings in vacuum drying oven.
Step 2: rubber plastic steelmaking
Refined glue 25 minutes with sending into after 36 kilograms natural rubbers (or synthetic rubber) fragmentation in the glue refining machine, the sheet rubber placement that forms of plasticating was waited for mixing in 2 hours.
Step 3: mixing
In the sheet rubber that forms of plasticating, add 0.18 kilogram of promotor 2-thiol benzothiazole, 0.54 kilogram of anti-aging agent 2,2, the mixture of 4-trimethylammonium-dihyaroquinoline polymer, 0.18 kilogram of stearic acid, 1.8 kilograms of zinc oxide and 3.75 kilograms of white carbon blacks, repeatedly thin-pass 8-12 all over after stop and controlling glue furnacing temperature 40-60 ℃, add behind the modification SiC micro mist in the step 1 thin-pass 3-5 time, mixing and the thin-pass several of carbon black that adds 10 kilograms subsequently, the vulcanizing agent-sulphur thin-pass that adds 1.08 kilograms before the sulfuration mixes sizing material.
Step 4: sulfuration
The sizing material of mixing gained is pressed into 6 millimeters thin slice, puts into vulcanizer and vulcanize.Cure conditions: 160 ℃ of pressure 9Mpa of temperature, curing time 15 minutes, promptly make silicon carbide rubber wear-resistant material, 13.8 square metres of the total areas of silicon carbide rubber wear-resistant material, its thickness are 4 millimeters.
The tensile strength of present embodiment silicon carbide rubber wear-resistant material is that 11-18MPa, elongation at break are 20%-40%, Akron abrasion loss (cm
2) 0.05-0.08g.This shows that under the situation that parameters such as tensile strength, elongation after fracture meet the demands, Akron abrasion loss has nearly reduced by 20%, makes the wear resisting property of rubber increase substantially.
Embodiment 4:
The chemical conversion treatment of step 1:SiC
(volume is 1.5 * 10 with 5 kilograms
-3Cubic meter) particle diameter is that 28 microns SiC and 5 kilograms of toluene are contained in the back that stirs in the reactor and add 7.5 kilograms of silane coupling agent vinyl triethoxyl silanes; and under the situation of reactor feeding nitrogen protection, reacted 6 hours; 50 ℃ of temperature of reaction; after reaction finishes; reaction product after filtration, acetone soaks, suction filtration, obtains modification SiC micro mist 6.8-7.4 kilograms in 80 ℃ of following vacuum-dryings in vacuum drying oven.
Step 2: rubber plastic steelmaking
With gross weight is to send in the glue refining machine refining glue after 36 kilograms natural rubber and the synthetic rubber fragmentation 25 minutes, and the sheet rubber that forms of plasticating is placed and waited for mixingly in 2 hours, and described natural rubber and elastomeric mass percent are 1: 1.
Step 3: mixing
In the sheet rubber that forms of plasticating, add 0.18 kilogram of promotor 2-thiol benzothiazole, 0.54 kilogram of anti-aging agent 2,2, the mixture of 4-trimethylammonium-dihyaroquinoline polymer, 0.18 kilogram of stearic acid, 1.8 kilograms of zinc oxide and 3.75 kilograms of white carbon blacks, repeatedly thin-pass 8-12 all over after stop and controlling glue furnacing temperature 40-60 ℃, add behind the modification SiC micro mist in the step 1 thin-pass 3-5 time, mixing and the thin-pass several of carbon black that adds 10 kilograms subsequently, the vulcanizing agent-sulphur thin-pass that adds 1.08 kilograms before the sulfuration mixes sizing material.
Step 4: sulfuration
The sizing material of mixing gained is pressed into 6 millimeters thin slice, puts into the mould back and vulcanize at vulcanizer.Cure conditions: 160 ℃ of pressure 9Mpa of temperature, curing time 15 minutes, promptly make silicon carbide rubber wear-resistant material, 13.8 square metres of the total areas of silicon carbide rubber wear-resistant material, its thickness are 4 millimeters.
The tensile strength of present embodiment silicon carbide rubber wear-resistant material is that 11-18MPa, elongation at break are 20%-40%, Akron abrasion loss (cm
2) 0.05-0.08g.This shows that under the situation that parameters such as tensile strength, elongation after fracture meet the demands, Akron abrasion loss has nearly reduced by 20%, makes the wear resisting property of rubber increase substantially.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every according to the technology of the present invention essence to any simple modification, change and equivalent transformation that above embodiment did, all still belong in the protection domain of technical solution of the present invention.
Claims (4)
1. silicon carbide rubber wear-resistant material is characterized in that being made up of the raw material of following weight part:
Rubber 18-36 anti-aging agent 0.2-0.8 promotor 1-3 vulcanizing agent 0.5-1.5
Stopping composition 10-22 coupling agent 2-10 toluene 1-6;
Described rubber is natural rubber, synthetic rubber or mass percent are 1: 1 natural rubber and elastomeric mixture, described anti-aging agent is 2,2,4-trimethylammonium-dihyaroquinoline polymer, described promotor is the 2-thiol benzothiazole, zinc oxide and stearic mixture, described 2-thiol benzothiazole, zinc oxide and stearic mass percent are 1-3: 10: 1-2, described vulcanizing agent is a sulphur, described stopping composition is a particle diameter less than 50 microns SiC, the mixture of carbon black and Nano carbon white, the mass percent of described carbon black and silicon carbide mixture and white carbon black is 4: 1, wherein the mass percent of carbon black and silicon carbide is 2-6: 1, and described coupling agent is a silane coupling agent.
2. according to the described a kind of silicon carbide rubber wear-resistant material of claim 1, it is characterized in that: described silane coupling agent is a vinyltriethoxysilane.
3. one kind prepares the method for silicon carbide rubber wear-resistant material according to claim 1, it is characterized in that may further comprise the steps:
The chemical conversion treatment of step 1:SiC: SiC and toluene are contained in the back adding silane coupling agent that stirs in the reactor, and reacted 4-6 hour under the situation of feeding nitrogen protection in described reactor, temperature of reaction 40-80 ℃, after reaction finishes, reaction product after filtration, acetone soaks and suction filtration after, in vacuum drying oven,, obtain modification SiC micro mist in 80-110 ℃ of following vacuum-drying;
Step 2: rubber plastic steelmaking: refining glue finished after 15-25 minute in the glue refining machine with sending into after the rubber fragmentation, and the sheet rubber placement that forms of plasticating was waited for mixing in 1-3 hour;
Step 3: mixing: add promotor 2-thiol benzothiazole, zinc oxide and stearic acid in the sheet rubber that forms of in step 2, plasticating, anti-aging agent 2,2, the mixture of 4-trimethylammonium-dihyaroquinoline polymer and Nano carbon white, repeatedly thin-pass 8-12 all over after stop, and the glue furnacing temperature of control glue refining machine is 40-60 ℃, add behind the modification SiC micro mist in the step 1 thin-pass 3-5 time, it is mixing and thin-pass 3-5 time to add carbon black subsequently, add the vulcanizing agent thin-pass then, mix back gained sizing material and treat the sulfuration use;
Step 4: sulfuration: the sizing material of mixing gained in the step 3 is pressed into the thin slice of 4-8 millimeter, puts into vulcanizer and vulcanize, promptly make silicon carbide rubber wear-resistant material.
4. according to the preparation method of the described a kind of silicon carbide rubber wear-resistant material of claim 3, it is characterized in that the curing temperature of sulfurized described in the step 4 is 120-160 ℃, sulfide stress is 6-9Mpa, and curing time is 15-25 minute.
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Application publication date: 20090128 Assignee: Qianjiang Haojia Sealing Parts Co., Ltd. Assignor: Xi'an University of Science and Technology Contract record no.: 2012610000146 Denomination of invention: Silicon carbide rubber wear-resistant material and preparation thereof Granted publication date: 20110406 License type: Exclusive License Record date: 20120917 |
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