CN105176093A - Preparation method of modified organic silicon resin/silicon carbide compounded abrasive - Google Patents
Preparation method of modified organic silicon resin/silicon carbide compounded abrasive Download PDFInfo
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- CN105176093A CN105176093A CN201510734971.3A CN201510734971A CN105176093A CN 105176093 A CN105176093 A CN 105176093A CN 201510734971 A CN201510734971 A CN 201510734971A CN 105176093 A CN105176093 A CN 105176093A
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- silicone resin
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- silicon carbide
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 42
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229920005989 resin Polymers 0.000 title claims abstract description 22
- 239000011347 resin Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract 6
- 229910052710 silicon Inorganic materials 0.000 title abstract 6
- 239000010703 silicon Substances 0.000 title abstract 6
- 239000003082 abrasive agent Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000004576 sand Substances 0.000 claims abstract description 13
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 229920002050 silicone resin Polymers 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 30
- -1 silicon carbide compound Chemical class 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 230000035484 reaction time Effects 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 239000007822 coupling agent Substances 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 9
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 8
- YBHBEZSZXFLQMW-UHFFFAOYSA-N [dimethoxy(phenyl)silyl]methanamine Chemical compound CO[Si](CN)(OC)C1=CC=CC=C1 YBHBEZSZXFLQMW-UHFFFAOYSA-N 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- YQHLDYVWEZKEOX-UHFFFAOYSA-N cumene hydroperoxide Chemical compound OOC(C)(C)C1=CC=CC=C1 YQHLDYVWEZKEOX-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 229940008099 dimethicone Drugs 0.000 claims description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 8
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- VLCAYQIMSMPEBW-UHFFFAOYSA-N methyl 3-hydroxy-2-methylidenebutanoate Chemical compound COC(=O)C(=C)C(C)O VLCAYQIMSMPEBW-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 8
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 8
- 229920001228 polyisocyanate Polymers 0.000 claims description 8
- 239000005056 polyisocyanate Substances 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 26
- 238000004140 cleaning Methods 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 239000000377 silicon dioxide Substances 0.000 abstract description 6
- 239000007769 metal material Substances 0.000 abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 239000002052 molecular layer Substances 0.000 abstract 3
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 20
- 239000010410 layer Substances 0.000 description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002113 nanodiamond Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a preparation method of a modified organic silicon resin/silicon carbide compounded abrasive, belonging to the technical field of abrasives. The method comprises the following steps: (1) modifying an organic silicon resin; (2) carrying out chemical vapor deposition to coat a SiO2 nano layer on the SiC powder surface; and (3) by using the SiO2-nano-layer-coated SiC powder as a sand core, mixing in a continuous sand mill. The modified organic silicon resin/silicon carbide compounded abrasive is prepared from non-metal materials. The organic silicon resin is modified to enhance the mechanical strength. The modified organic silicon resin is grafted on the silicon-dioxide-nano-layer-coated silicon carbide powder, thereby integrally enhancing the strength of the abrasive. The compounded abrasive has ideal cleaning effects, and can be recycled, thereby lowering the use cost.
Description
Technical field
The present invention relates to the preparation method of a kind of modified organic silicone resin/silicon carbide compound abrasive material, for the cleaning of boats and ships steel surface, belong to abrasive techniques field.
Background technology
Shipping cleaning mainly refer to by the removing of coating, dirty layer on ship outer casing.Clean development of new techniques in recent years very fast, produce and repair ship processing requirement more and more higher, shipping cleaning technology also there occurs considerable change.At present, under the Technolgy of High Pressure Water jet Cleaning, sandblasting cleaning, neutral no-sour cleaner, gas shot-peening, PIG cleaning technique, biological cleaning technique, manual handling technology, robot water, Removal Technology, ultrasonic cleaning technology have all successfully been applied to shipping cleaning field.The features such as wherein, the cleaning way utilizing high pressure water to drive abrasive material to realize efficient cleaning performance becomes cleaning way comparatively popular at present, and this kind of technological synthesis technology such as ball blast, sandblasting, high pressure water cleaning, reach high-effect, low stain, easy and simple to handle.
Wherein, in the Technolgy of High Pressure Water jet Cleaning, ball blast and sandblasting and High-pressure Water Jet Technology one realize, at the current that high-pressure nozzle ejection energy height is concentrated, add ball blast and blasting craft, i.e. abrasive material simultaneously, current clash in conjunction with the dirty thing of abrasive material to boats and ships steel surface, cavitate, grinding, wedge cleaving, pulverizing and stripping, can sand removal and rust cleaning, effectively remove salt, alkali, the grease of boats and ships steel surface, thus reach good cleaning effect.Wherein, the effect of abrasive material highlights day by day, be subject to extensive concern, in prior art, abrasive material generally adopts metal composite abrasive material, based on shot and steel sand, and adopt the abrasive material of other non-metallic material less, the existing defects of metallic substance own is large, with features such as fragmentations, and there is certain injury for shower nozzle.
CN201210029288.6 discloses a kind of Nano diamond for concretion abrasive polishing pad-polymer compounded abrasive.Patent document discloses a kind of preparation method preparing diamond-polymer compounded abrasive, the kernel of Compostie abrasive particles is for passing through mechanical crushing method, the diamond powder that shock-synthesis technique or static pressure method prepare, its particle size range is at 1 ~ 100nm, above-mentioned powder as kernel by silane coupler modified formation intermediate layer, finally with epoxy resin with polyacrylate grafting is coated obtains compounded abrasive, wherein the quality of silane coupling agent is 0.2% ~ 2% of nanoparticle quality; Described epoxy resin and the quality of polyacrylic ester are 0.2% ~ 2% of inorganic nano-particle protonatomic mass.
This is the abrasive material that a kind of hardness is higher, but has two aspect problems, the first, and the effect of intermediate layer is poor, and the hardness of diamond itself is higher, and inertia is comparatively large, with the direct coated form of nano-powder, still there will be the hypodynamic problem of attachment; The second, this abrasive material is not also suitable for the cleaning of boats and ships steel surface, and main relevant with particle diameter, particle diameter is too little, easily produces dust.
Summary of the invention
Technical problem to be solved by this invention is: existing ship cleaning abrasive ingredients is comparatively single, and the problem that effect is poor, by preparing a kind of hardness and intensity all larger modified organic silicone resin/silicon carbide compound abrasive material, reaches better cleaning effect.
Technical scheme:
A preparation method for modified organic silicone resin/silicon carbide compound abrasive material, comprises the steps:
The preparation of the 1st step, modified organic silicone resin: by weight, by hydroxyethyl methylacrylate 0.5 ~ 1.6 part, polyisocyanates 0.3 ~ 0.7 part, polyethylene terephthalate 1.0 ~ 2.5 parts, aminomethyl phenyl dimethoxysilane 0.2 ~ 0.5 part, phenyl silicone 3.5 ~ 5.0 parts and alkyl dimethicone 0.3 ~ 0.7 part, put into reactor, add deionized water 5 ~ 10 parts, stir, add isopropyl benzene hydroperoxide 0.05 ~ 0.25 part, heating is reacted, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: SiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, vacuumize, pass into shielding gas, reaction chamber is preheated to 500-700 DEG C, material temperature 90-120 DEG C, the coating reaction time is 30-60min, after coated end, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: by weight, get modified organic silicone resin, 2.2 ~ 4.5 parts, solidifying agent, coupling agent 0.8 ~ 1.5 part, aminothio ester 1.5 ~ 3.5 parts, aluminum silicate fiber 0.2 ~ 0.8 part and 0.8 ~ 1.8 part, glass fibre, after mixing, with 80.0 ~ 120.0 parts of coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
In the 1st described step, the temperature of polyreaction is 140 ~ 175 DEG C, and polymerization reaction time is 3 ~ 6 hours.
In the 2nd described step, the particle diameter of SiC powder is 0.3-0.9mm.
In the 3rd described step, solidifying agent is polyamide curing agent or fatty amine curing agent.
In the 3rd described step, coupling agent is KH550 silane coupling agent, KH560 silane coupling agent or titanate coupling agent.
beneficial effect
The invention provides modified organic silicone resin/silicon carbide compound abrasive material, adopt non-metallic material to prepare abrasive material, with the higher silicon carbide of hardness for core, and by chemical Vapor deposition process in silicon carbide powder Surface coating layer of silicon dioxide nanometer layer, pass through chemical Vapor deposition process on the one hand, the covering property of silica nanometer to silicon carbide powder is even more ideal, is also beneficial to resin layer grafting and coating on the other hand.And, modification has been carried out to silicone resin, improve its physical strength, on the silicon carbide powder of nanometer layer that is coated with silicon oxide, grafting and coating is by the silicone resin coating of modification, entirety improves the intensity of abrasive material, and thus, the compounded abrasive of preparation has more preferably cleaning effect, and can repeatedly use, reduce use cost.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
embodiment 1
The preparation of the 1st step, modified organic silicone resin: by hydroxyethyl methylacrylate 0.5Kg, polyisocyanates 0.3Kg, polyethylene terephthalate 1.0Kg, aminomethyl phenyl dimethoxysilane 0.2Kg, phenyl silicone 3.5Kg and alkyl dimethicone 0.4Kg, put into reactor, add deionized water 5Kg part, stir, add isopropyl benzene hydroperoxide 0.05Kg, react 4 hours at 155 DEG C of temperature, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: be that the SiC powder of 0.5mm puts into chemical vapor deposition reaction chamber by particle diameter, take tetraethoxy as raw material, be evacuated to 10Pa, passing into argon gas is shielding gas, and argon gas flow is 30sccm, and reaction chamber is preheated to 550 DEG C, material temperature 115 DEG C, starts coated, and reaction chamber speed of rotation is 30r/min, the coating reaction time is 30min, after coated end, stops the rotation, stop raw material supply, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: get modified organic silicone resin 10.95Kg, polyamide curing agent 2.2Kg(model DY-650, the firelight or sunlight chemical industry of Shandong moral), KH550 silane coupling agent 0.8Kg, aminothio ester 1.5Kg, aluminum silicate fiber 0.2Kg part and glass fibre 0.8Kg part, after mixing, with 80.0Kg coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
embodiment 2
The preparation of the 1st step, modified organic silicone resin: by hydroxyethyl methylacrylate 1.6Kg, polyisocyanates 0.7Kg, polyethylene terephthalate 2.5Kg, aminomethyl phenyl dimethoxysilane 0.5Kg, phenyl silicone 5.0Kg and alkyl dimethicone 0.7Kg, put into reactor, add deionized water 10Kg, stir, add isopropyl benzene hydroperoxide 0.25Kg, react 4 hours at 155 DEG C of temperature, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: 0.5mmSiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, are evacuated to 10Pa, passing into argon gas is shielding gas, and gas flow is 30sccm, and reaction chamber is preheated to 500 DEG C, material temperature 115 DEG C, starts coated, and reaction chamber speed of rotation is 30r/min, the coating reaction time is 30min, after coated end, stops the rotation, stop raw material supply, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: get modified organic silicone resin 21.25Kg, polyamide curing agent 4.5Kg(model DY-650, the firelight or sunlight chemical industry of Shandong moral), KH550 silane coupling agent 1.5Kg, aminothio ester 3.5Kg, aluminum silicate fiber 0.8Kg and glass fibre 1.8Kg, after mixing, with 120.0Kg coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
embodiment 3
The preparation of the 1st step, modified organic silicone resin: by hydroxyethyl methylacrylate 1.1Kg, polyisocyanates 0.5Kg, polyethylene terephthalate 1.6Kg, aminomethyl phenyl dimethoxysilane 0.3Kg, phenyl silicone 4.2Kg and alkyl dimethicone 0.5Kg, put into reactor, add deionized water 7Kg, stir, add isopropyl benzene hydroperoxide 0.15Kg, react 4 hours at 155 DEG C of temperature, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: 0.5mmSiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, are evacuated to 10Pa, passing into argon gas is shielding gas, and gas flow is 30sccm, and reaction chamber is preheated to 550 DEG C, material temperature 115 DEG C, starts coated, and reaction chamber speed of rotation is 30r/min, the coating reaction time is 30min, after coated end, stops the rotation, stop raw material supply, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: get modified organic silicone resin 15.35Kg, vinyl triamine 3.6Kg, titanate coupling agent 1.2Kg, aminothio ester 2.7Kg, aluminum silicate fiber 0.5Kg and glass fibre 1.2Kg, after mixing, with 110.0Kg coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
embodiment 4
The preparation of the 1st step, modified organic silicone resin: by hydroxyethyl methylacrylate 1.1Kg, polyisocyanates 0.5Kg, polyethylene terephthalate 1.6Kg, aminomethyl phenyl dimethoxysilane 0.3Kg, phenyl silicone 4.2Kg and alkyl dimethicone 0.5Kg, put into reactor, add deionized water 7Kg, stir, add isopropyl benzene hydroperoxide 0.15Kg, react 4 hours at 155 DEG C of temperature, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: 0.3mmSiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, are evacuated to 10Pa, passing into argon gas is shielding gas, and gas flow is 30sccm, and reaction chamber is preheated to 550 DEG C, material temperature 115 DEG C, starts coated, and reaction chamber speed of rotation is 30r/min, the coating reaction time is 60min, after coated end, stops the rotation, stop raw material supply, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: get modified organic silicone resin 15.35Kg, polyamide curing agent 3.3Kg(model DY-650, the firelight or sunlight chemical industry of Shandong moral), KH560 silane coupling agent 1.1Kg, aminothio ester 2.7Kg, aluminum silicate fiber 0.5Kg and glass fibre 1.2Kg, after mixing, with 110.0Kg coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
embodiment 5
The preparation of the 1st step, modified organic silicone resin: by hydroxyethyl methylacrylate 1.1Kg, polyisocyanates 0.5Kg, polyethylene terephthalate 1.5Kg, aminomethyl phenyl dimethoxysilane 0.3Kg, phenyl silicone 4.0Kg and alkyl dimethicone 0.5Kg, put into reactor, add deionized water 6.5Kg, stir, add isopropyl benzene hydroperoxide 0.18Kg, react 4 hours at 155 DEG C of temperature, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: 0.9mmSiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, are evacuated to 10Pa, passing into argon gas is shielding gas, and gas flow is 30sccm, and reaction chamber is preheated to 550 DEG C, material temperature 95 DEG C, starts coated, and reaction chamber speed of rotation is 30r/min, the coating reaction time is 30min, after coated end, stops the rotation, stop raw material supply, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: get modified organic silicone resin 14.58Kg, polyamide curing agent 3.3Kg(model DY-650, the firelight or sunlight chemical industry of Shandong moral), KH560 silane coupling agent 1.1Kg, aminothio ester 2.7Kg, aluminum silicate fiber 0.5Kg and glass fibre 1.2Kg, after mixing, with 120.0Kg coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
reference examples 1
Be with the difference of embodiment 3: the 2nd step SiC does not carry out the coated of silica nanometer layer.
The preparation of the 1st step, modified organic silicone resin: by hydroxyethyl methylacrylate 1.1Kg, polyisocyanates 0.5Kg, polyethylene terephthalate 1.6Kg, aminomethyl phenyl dimethoxysilane 0.3Kg, phenyl silicone 4.2Kg and alkyl dimethicone 0.5Kg, put into reactor, add deionized water 7Kg, stir, add isopropyl benzene hydroperoxide 0.15Kg, react 4 hours at 155 DEG C of temperature, after reaction terminates, obtain modified organic silicone resin;
Prepared by the 2nd step, resin sand: get modified organic silicone resin 15.35Kg, vinyl triamine 3.6Kg, titanate coupling agent 1.2Kg, aminothio ester 2.7Kg, aluminum silicate fiber 0.5Kg and glass fibre 1.2Kg, after mixing, put into continuous muller and carry out mixed system together with the SiC powder 110.0Kg of 0.5mm particle diameter.
reference examples 2
Be with the difference of embodiment 3: the 1st step silicone resin does not carry out modification, the component of the silicone resin layer of parcel is different.
1st step, SiC are coated: 0.5mmSiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, are evacuated to 10Pa, passing into argon gas is shielding gas, and gas flow is 30sccm, and reaction chamber is preheated to 550 DEG C, material temperature 115 DEG C, starts coated, and reaction chamber speed of rotation is 30r/min, the coating reaction time is 30min, after coated end, stops the rotation, stop raw material supply, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 2nd step, resin sand: get silicone resin 15.35Kg, vinyl triamine 3.6Kg and titanate coupling agent 1.2Kg, with coated Si O
2after SiC powder 110.0Kg put into continuous muller together and carry out mixed system.
performance test
The above-mentioned compounded abrasive prepared is used for the washing test of hull surface steel plate, measure about the steel surface of uncoated mistake and the rusty degree of the steel surface after removing original coating and the content of process grade regulation comprehensively according in GBT8923.1-2011 " before coating coating the visual evaluation of steel surface treat surface degree of cleaning ", result is as shown in the table:
| Surfaceness | Salt score value mg/m 2 | Cleaning grade | |
| Embodiment 1 | 56 | 31 | Sa 2.5 |
| Embodiment 2 | 55 | 32 | Sa 2.5 |
| Embodiment 3 | 56 | 32 | Sa 2.5 |
| Embodiment 4 | 53 | 33 | Sa 2.5 |
| Embodiment 5 | 49 | 31 | Sa 2.5 |
| Reference examples 1 | 76 | 33 | Sa 2 |
| Reference examples 2 | 73 | 33 | Sa 2 |
Carry out contrast by embodiment 1-5 and reference examples 1 can find out, SiC does not carry out the coated of silica nanometer layer, and the parcel poor-performing with resin layer, causes intensity to reduce, have impact on cleaning effect; By coated silica nanometer layer, be similar to the effect of transition layer, SiC and resin layer are tightly wrapped up, ensure that its higher mechanical property.Embodiment 1-5 is compared with reference examples 2, silicone resin layer does not improve, the component of the silicone resin layer of parcel is also different, namely whole silicone resin layer adopts prior art, and can find out, cleaning effect also declines, cleaning requirements drop to 2 grades, obviously the intensity being resin layer is too low, have impact on Young's modulus and the hardness of resin sand compounded abrasive, thus can not impact effect to boats and ships steel surface; By the component to the modification of silicone resin and adjustment resin layer, can overcome this technical problem, the intensity strengthening resin layer can ensure that silicon carbide performance is played, therefore, improve the mechanical property of compounded abrasive, make it reach the performance even having exceeded metal composite abrasive material.
Claims (5)
1. a preparation method for modified organic silicone resin/silicon carbide compound abrasive material, is characterized in that, comprise the steps:
The preparation of the 1st step, modified organic silicone resin: by weight, by hydroxyethyl methylacrylate 0.5 ~ 1.6 part, polyisocyanates 0.3 ~ 0.7 part, polyethylene terephthalate 1.0 ~ 2.5 parts, aminomethyl phenyl dimethoxysilane 0.2 ~ 0.5 part, phenyl silicone 3.5 ~ 5.0 parts and alkyl dimethicone 0.3 ~ 0.7 part, put into reactor, add deionized water 5 ~ 10 parts, stir, add isopropyl benzene hydroperoxide 0.05 ~ 0.25 part, heating is reacted, after reaction terminates, obtain modified organic silicone resin;
2nd step, SiC are coated: SiC powder is put into chemical vapor deposition reaction chamber, take tetraethoxy as raw material, vacuumize, pass into shielding gas, reaction chamber is preheated to 500-700 DEG C, material temperature 90-120 DEG C, the coating reaction time is 30-60min, after coated end, to be cooled to room temperature, take out, grinding 10min;
Prepared by the 3rd step, resin sand: by weight, get modified organic silicone resin, 2.2 ~ 4.5 parts, solidifying agent, coupling agent 0.8 ~ 1.5 part, aminothio ester 1.5 ~ 3.5 parts, aluminum silicate fiber 0.2 ~ 0.8 part and 0.8 ~ 1.8 part, glass fibre, after mixing, with 80.0 ~ 120.0 parts of coated Si O
2after SiC powder put into continuous muller together and carry out mixed system.
2. the preparation method of modified organic silicone resin according to claim 1/silicon carbide compound abrasive material, is characterized in that: in the 1st described step, and the temperature of polyreaction is 140 ~ 175 DEG C, and polymerization reaction time is 3 ~ 6 hours.
3. the preparation method of modified organic silicone resin according to claim 1/silicon carbide compound abrasive material, is characterized in that: in the 2nd described step, and the particle diameter of SiC powder is 0.3-0.9mm.
4. the preparation method of modified organic silicone resin according to claim 1/silicon carbide compound abrasive material, is characterized in that: in the 3rd described step, solidifying agent is polyamide curing agent or fatty amine curing agent.
5. the preparation method of modified organic silicone resin according to claim 1/silicon carbide compound abrasive material, is characterized in that: in the 3rd described step, and coupling agent is KH550 silane coupling agent, KH560 silane coupling agent or titanate coupling agent.
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| CN101967234A (en) * | 2010-09-30 | 2011-02-09 | 南京工业大学 | Method for preparing water jet grinding material |
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| CN101525400A (en) * | 2009-03-16 | 2009-09-09 | 南京工业大学 | Low-loss unsaturated polyester composite water jet abrasive and preparation method thereof |
| CN101967234A (en) * | 2010-09-30 | 2011-02-09 | 南京工业大学 | Method for preparing water jet grinding material |
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