CN109054948B - 低成本抗氧化纳米混合油及其制备方法 - Google Patents
低成本抗氧化纳米混合油及其制备方法 Download PDFInfo
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- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 52
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000002245 particle Substances 0.000 claims abstract description 120
- 239000003921 oil Substances 0.000 claims abstract description 57
- 235000019198 oils Nutrition 0.000 claims abstract description 57
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 25
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 25
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 25
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 239000002738 chelating agent Substances 0.000 claims abstract description 23
- 239000002480 mineral oil Substances 0.000 claims abstract description 23
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 23
- 235000019484 Rapeseed oil Nutrition 0.000 claims abstract description 19
- 239000004359 castor oil Substances 0.000 claims abstract description 19
- 235000019438 castor oil Nutrition 0.000 claims abstract description 19
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 19
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 19
- 239000004006 olive oil Substances 0.000 claims abstract description 19
- 235000008390 olive oil Nutrition 0.000 claims abstract description 19
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 60
- 238000003756 stirring Methods 0.000 claims description 41
- 238000002156 mixing Methods 0.000 claims description 39
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 34
- 239000008158 vegetable oil Substances 0.000 claims description 34
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 27
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- 244000178231 Rosmarinus officinalis Species 0.000 claims description 9
- 235000019441 ethanol Nutrition 0.000 claims description 9
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 8
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- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
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- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
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- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 6
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- DHTAIMJOUCYGOL-UHFFFAOYSA-N 2-ethyl-n-(2-ethylhexyl)-n-[(4-methylbenzotriazol-1-yl)methyl]hexan-1-amine Chemical group C1=CC=C2N(CN(CC(CC)CCCC)CC(CC)CCCC)N=NC2=C1C DHTAIMJOUCYGOL-UHFFFAOYSA-N 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
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- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
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- 229920000587 hyperbranched polymer Polymers 0.000 claims description 3
- XZWYZXLIPXDOLR-UHFFFAOYSA-N metformin Chemical compound CN(C)C(=N)NC(N)=N XZWYZXLIPXDOLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 241000337636 Kalama Species 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 230000001934 delay Effects 0.000 abstract description 2
- 239000002105 nanoparticle Substances 0.000 description 5
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- 239000011707 mineral Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
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- 238000009833 condensation Methods 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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Abstract
本发明公开了一种低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:30‑50份矿物油、15‑20份菜籽油、4‑8份橄榄油、6‑12份蓖麻油、15‑30份无水乙醇、1‑5份复合抗氧化剂、1‑3份纳米SiO2粒子、1‑3纳米ZnO粒子、1‑3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1‑3份、钝化剂0.5‑2份、粘度调节剂0.5‑1份、金属螯合剂0.5‑1份;具有较好的抗氧性能,延缓混合油的氧化速度,提高使用寿命,且具有较小的倾点以满足低温环境下使用的需求,该混合油具有良好的电气性能和理化性能,且成本低。
Description
技术领域
本发明涉及一种混合油,特别涉及一种低成本抗氧化纳米混合油及其制备方法。
背景技术
电力变压器是电网供电的关键设备之一,现在油浸式电力变压器的内绝缘广泛采用25#矿物绝缘油。但是矿物油存在燃点低、不可再生、不可降解、生物降解能力差等缺点,并且一旦发生泄漏,会对生态环境造成严重的影响。天然酯(植物油)具有良好的电气性能,且生物降解率高达97%,但是其凝点大,抗氧化性差,界面张力较小,比重、运动粘度、水含量、酸值以及倾点等理化参数尚不理想,极大的限制了其广泛应用。且在矿物绝缘油中添加纳米粒子形成纳米流体,可提高矿物绝缘油的介电强度和导热性能,同时也存在以下问题:一是在变压器内部复杂电、磁、热场中的稳定性及纤维等杂质对纳米粒子分散稳定性影响的问题,二是纳米粒子自身理化参数对于绝缘油介电及导热性能的影响。
发明内容
有鉴于此,本发明的目的在于提供一种低成本抗氧化纳米混合油及其制备方法,具有较好的抗氧性能,延缓混合油的氧化速度,提高使用寿命,且具有较小的倾点以满足低温环境下使用的需求,该混合油具有良好的电气性能和理化性能,且成本低。
本发明的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份;
所述复合抗氧剂为2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香的复配;按质量比2,6-二叔丁基对甲酚:烷基化基-α-萘胺:迷迭香=4:2:1;
所述纳米SiO2粒子经下述方式处理:将经400℃活化处理5h的纳米SiO2粒子与γ-(甲基丙烯酰氧)丙基三甲氧基硅烷混合后共同分散于经3A分子筛除水的甲苯中,超声分散10min,加热回流24h后冷却,然后以13000r/min离心分离,沉淀用无水乙醇洗涤数次后干燥,按重量比纳米SiO2:γ-(甲基丙烯酰氧)丙基三甲氧基硅烷:甲苯=1:2:30;
所述纳米ZnO粒子经下述方式处理:按体积比配置600ml的乙醇水溶液,加入γ-(甲基丙烯酰氧)丙基三甲氧基硅烷磁力搅拌30min后加入40g纳米ZnO粒子,继续搅拌20min后超声分散30min,然后放入温度为85℃的油浴中回流2h后冷却,然后用乙醇和蒸馏水分别洗涤2次,于温度为100℃下真空干燥8h后研磨;
所述纳米A12O3粒子经下述方式处理:将纳米A12O3粒子置于120℃烘箱中干燥6h后冷却至室温,然后加入二苯基甲烷二异氰酸酯和4A分子筛干燥过的甲苯在室温下搅拌分散30min后,在氮气保护下加热至40℃,采用二正丁胺法测定溶液中的异氰酸酯的浓度至不变后停止反应,将反应后的纳米A12O3粒子用丙酮反复清洗至不含异氰酸酯,然后将得到的纳米A12O3粒子于温度40℃下真空干燥;
进一步,混合油原料按重量份包括以下组分:40份矿物油、18份菜籽油、6份橄榄油、8份蓖麻油、24份无水乙醇、3份复合抗氧化剂、2份纳米SiO2粒子、2份纳米ZnO粒子、2份纳米A1203粒子、聚甲基丙烯酸酯降凝剂2份、钝化剂1份、粘度调节剂0.8份、金属螯合剂0.8份;
进一步,纳米氧化锌的处理过程中,所述乙醇与水的体积比为1:3;所述纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子均为球形,且平均粒径为1nm;
进一步,所述钝化剂为Ciba公司生产的Irgamet39;所述粘度调节剂为亚乙基双硬脂酸酰胺、超支化聚合物、乙烯-醋酸乙烯共聚物中的一种或两者以上混合物;所述矿物油为新疆卡拉玛依产的25#变压器绝缘油;
进一步,所述金属螯合剂为富马酸(反丁烯二酸)—丙烯磺酸共聚体、聚甲基丙烯酸和葡萄糖酸钠的混合物,所述富马酸(反丁烯二酸)—丙烯磺酸共聚体、聚甲基丙烯酸和葡萄糖酸钠的重量比为1:2:3。
本发明还公开一种低成本抗氧化纳米混合油的制备方法,包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
本发明的有益效果:本发明的低成本抗氧化纳米混合油,采用矿物油与植物油混合并添加其他组分协同作用,一方面使混合油具有凝点低和较大的界面张力,并在比重、运动粘度、水含量、酸值以及倾点等理化性质方面均有较好的改善和增强,使混合油具有良好的电气性能和理化性能,采用2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香协同增效,提高抗氧能力,且迷迭香还可与金属螯合剂协同增效,钝化剂用于钝化铜等金属对氧化的促进作用,从而提高其抗氧化性能,与2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香有良好的协同增效作用,粘度调节剂确保合适的粘度以保证油品在长期运行中起到理想的冷却作用,选择合理的低温粘度以保证变压器在停止运行再启动时能安全工作,所采用的纳米粒子比表面小,不易团聚,亲油性好,提高混合油的介电强度和导热性能;另一方面,节约经济成本。
具体实施方式
实施例一
本实施例的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份。
本实施的低成本抗氧化纳米混合油的制备方法包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
实施例二
本实施例的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份。
本实施的低成本抗氧化纳米混合油的制备方法包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
实施例三
本实施例的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份。
本实施的低成本抗氧化纳米混合油的制备方法包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
实施例四
本实施例的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份。
本实施的低成本抗氧化纳米混合油的制备方法包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
实施例五
本实施例的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份。
本实施的低成本抗氧化纳米混合油的制备方法包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
实施例六
本实施例的低成本抗氧化纳米混合油,混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份。
本实施的低成本抗氧化纳米混合油的制备方法包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在、100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;,萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
上述实施例中,所述复合抗氧剂为2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香的复配;按质量比2,6-二叔丁基对甲酚:烷基化基-α-萘胺:迷迭香=4:2:1;
所述纳米SiO2粒子经下述方式处理:将经400℃活化处理5h的纳米SiO2粒子与γ-(甲基丙烯酰氧)丙基三甲氧基硅烷混合后共同分散于经3A分子筛除水的甲苯中,超声分散10min,加热回流24h后冷却,然后以13000r/min离心分离,沉淀用无水乙醇洗涤数次后干燥,按重量比纳米SiO2:γ-(甲基丙烯酰氧)丙基三甲氧基硅烷:甲苯=1:2:30;
所述纳米ZnO粒子经下述方式处理:按体积比配置600ml的乙醇水溶液,加入γ-(甲基丙烯酰氧)丙基三甲氧基硅烷磁力搅拌30min后加入40g纳米ZnO粒子,继续搅拌20min后超声分散30min,然后放入温度为85℃的油浴中回流2h后冷却,然后用乙醇和蒸馏水分别洗涤2次,于温度为100℃下真空干燥8h后研磨;
所述纳米A12O3粒子经下述方式处理:将纳米A12O3粒子置于120℃烘箱中干燥6h后冷却至室温,然后加入二苯基甲烷二异氰酸酯和4A分子筛干燥过的甲苯在室温下搅拌分散30min后,在氮气保护下加热至40℃,采用二正丁胺法测定溶液中的异氰酸酯的浓度至不变后停止反应,将反应后的纳米A12O3粒子用丙酮反复清洗至不含异氰酸酯,然后将得到的纳米A12O3粒子于温度40℃下真空干燥。
上述实施例中,纳米氧化锌的处理过程中,所述乙醇与水的体积比为1:3;所述纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子均为球形,且平均粒径为1nm;所述钝化剂为Ciba公司生产的Irgamet39;所述粘度调节剂为亚乙基双硬脂酸酰胺、超支化聚合物、乙烯-醋酸乙烯共聚物中的一种或两者以上混合物;所述金属螯合剂为富马酸(反丁烯二酸)—丙烯磺酸共聚体、聚甲基丙烯酸和葡萄糖酸钠的混合物,所述富马酸(反丁烯二酸)—丙烯磺酸共聚体、聚甲基丙烯酸和葡萄糖酸钠的重量比为1:2:3。
对实施例一中的混合油的电气性能进行测试。试验测得的参数如下:
参数 | 混合油 | 国标(GB 2536-2011) |
酸值KOH/(mg/g) | 0.006 | ≤0.1 |
密度(20℃)/(g/mL) | 0.512 | ≤0.895 |
闪点 | 183 | ≥140 |
水溶性酸值(PH) | 6.85 | ≥5.6 |
击穿电压(间隙2.5mm)/KV | 120 | ≥70(经处理油) |
运动粘度 | 8.77 | ≤12 |
起始氧化温度 | 300 | 无 |
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。
Claims (6)
1.一种低成本抗氧化纳米混合油,其特征在于:混合油原料按重量份包括以下组分:
30-50份矿物油、15-20份菜籽油、4-8份橄榄油、6-12份蓖麻油、15-30份无水乙醇、1-5份复合抗氧化剂、1-3份纳米SiO2粒子、1-3纳米ZnO粒子、1-3纳米A1203粒子、聚甲基丙烯酸酯降凝剂1-3份、钝化剂0.5-2份、粘度调节剂0.5-1份、金属螯合剂0.5-1份;
所述复合抗氧剂为2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香的复配;按质量比2,6-二叔丁基对甲酚:烷基化基-α-萘胺:迷迭香=4:2:1;
所述纳米SiO2粒子经下述方式处理:将经400℃活化处理5h的纳米SiO2粒子与γ-(甲基丙烯酰氧)丙基三甲氧基硅烷混合后共同分散于经3A分子筛除水的甲苯中,超声分散10min,加热回流24h后冷却,然后以13000r/min离心分离,沉淀用无水乙醇洗涤数次后干燥,按重量比纳米SiO2:γ-(甲基丙烯酰氧)丙基三甲氧基硅烷:甲苯=1:2:30;
所述纳米ZnO粒子经下述方式处理:按体积比配置600ml的乙醇水溶液,加入γ-(甲基丙烯酰氧)丙基三甲氧基硅烷磁力搅拌30min后加入40g纳米ZnO粒子,继续搅拌20min后超声分散30min,然后放入温度为85℃的油浴中回流2h后冷却,然后用乙醇和蒸馏水分别洗涤2次,于温度为100℃下真空干燥8h后研磨;
所述纳米A12O3粒子经下述方式处理:将纳米A12O3粒子置于120℃烘箱中干燥6h后冷却至室温,然后加入二苯基甲烷二异氰酸酯和4A分子筛干燥过的甲苯在室温下搅拌分散30min后,在氮气保护下加热至40℃,采用二正丁胺法测定溶液中的异氰酸酯的浓度至不变后停止反应,将反应后的纳米A12O3粒子用丙酮反复清洗至不含异氰酸酯,然后将得到的纳米A12O3粒子于温度40℃下真空干燥。
2.根据权利要求1所述的低成本抗氧化纳米混合油,其特征在于:混合油原料按重量份包括以下组分:40份矿物油、18份菜籽油、6份橄榄油、8份蓖麻油、24份无水乙醇、3份复合抗氧化剂、2份纳米SiO2粒子、2份纳米ZnO粒子、2份纳米A1203粒子、聚甲基丙烯酸酯降凝剂2份、钝化剂1份、粘度调节剂0.8份、金属螯合剂0.8份。
3.根据权利要求1所述的低成本抗氧化纳米混合油,其特征在于:纳米氧化锌的处理过程中,所述乙醇与水的体积比为1:3;所述纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子均为球形,且平均粒径为1nm。
4.根据权利要求3所述的低成本抗氧化纳米混合油,其特征在于:所述钝化剂为Ciba公司生产的Irgamet39;所述粘度调节剂为亚乙基双硬脂酸酰胺、超支化聚合物、乙烯-醋酸乙烯共聚物中的一种或两者以上混合物;所述矿物油为新疆卡拉玛依产的25#变压器绝缘油。
5.根据权利要求4所述的低成本抗氧化纳米混合油,其特征在于:所述金属螯合剂为富马酸(反丁烯二酸)—丙烯磺酸共聚体、聚甲基丙烯酸和葡萄糖酸钠的混合物,所述富马酸(反丁烯二酸)—丙烯磺酸共聚体、聚甲基丙烯酸和葡萄糖酸钠的重量比为1:2:3。
6.根据权利要求1所述的一种低成本抗氧化纳米混合油的制备方法,其特征在于:包括以下步骤:
a.将菜籽油、橄榄油和蓖麻油混合后加热至温度为80℃,在100r/min的转速搅拌下加入高于油温10度的纯水进行水洗,纯水用量为混合植物油的10%,搅拌25-35分钟后静置5小时,排出废液,取上层混合植物油;
b.对混合植物油进行脱酸处理:将混合植物油与无水乙醇混合后在温度为25-32℃下萃取3次,搅拌速度为700r/min,萃取3次过程中的搅拌时间先后为20min,20min,15min;萃取3次过程中的静置时间分别为:20min;20min,15min;
c.将经脱酸处理的混合植物油放入烘干箱中在100℃/45Pa的条件下真空干燥24h,然后加入矿物油、复合抗氧化剂、聚甲基丙烯酸酯降凝剂、钝化剂、粘度调节剂、金属螯合剂混合均匀;
d.将纳米SiO2粒子、纳米ZnO粒子和纳米A1203粒子使用均质机强力搅拌,然后加入到步骤c中,用超声振荡器分散后进行干燥和脱水处理。
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