 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 5 | 1/1 | 返回列表 |
| 查看: 1583 | 回復(fù): 4 | ||
| 本帖產(chǎn)生 1 個 翻譯EPI ，點擊這里進行查看 | ||
[求助]
翻譯摘要
|
||
|
隨著汽車工業(yè)的發(fā)展，機器設(shè)備對潤滑油的要求越來越高，單從煉制工藝提高潤滑油質(zhì)量已不能滿足高速度、高負(fù)荷、大功率等苛刻條件的要求。添加劑是現(xiàn)代潤滑油的精髓，對減摩抗磨，提高機器性能發(fā)揮著巨大的作用。粘度指數(shù)改進劑是用于制備多級內(nèi)燃機油、液壓油和齒輪油的主要添加劑，在潤滑油中添加粘度指數(shù)改進劑，可獲得低溫起動性能好、高溫下又能保持適當(dāng)粘度的多級油，從而使油品四季通用、南北通用。 目前，常用的粘度指數(shù)改進劑有聚甲基丙烯酸酯(PMA)、乙烯-丙烯共聚物(OCP)、氫化苯乙烯-雙烯共聚物(HSD)、聚異丁烯(PIB)等。由于乙丙共聚物粘度指數(shù)改進劑熱穩(wěn)定性好、稠化能力強、油溶性好，且價格便宜，在中高檔內(nèi)燃機油中得到廣泛的應(yīng)用。但作為單效添加劑發(fā)展還遠遠不夠，通過各種化學(xué)改性手段引入分散、抗氧、抗磨基團，開發(fā)高效、多功能粘度指數(shù)改進劑勢在必行。 本論文以乙丙共聚物為主要原料，進行了新型多功能潤滑油粘度指數(shù)改進劑的開發(fā)研制。主要研究工作包括以下三個方面： 1. 以有機過氧化物為引發(fā)劑，運用催化熱氧化降解法，對乙丙共聚物進行可控降解。通過單因素考察，確定了制備乙丙共聚物粘度指數(shù)改進劑的最佳工藝條件，當(dāng)選用150SN型號的基礎(chǔ)油，加入16%的J0010型乙丙共聚物(按總質(zhì)量計)，0.1%的過氧化二異丙苯為引發(fā)劑(按乙丙共聚物的質(zhì)量計)，在170℃下降解4h后，所得產(chǎn)品的剪切穩(wěn)定性為20，稠化能力達到6.50mm2/s以上。 2. 對降解所得單效乙丙共聚物粘度指數(shù)改進劑進行功能化，通過接枝和胺化反應(yīng)，在乙丙共聚物大分子鏈上引入含有氮的基團，使其成為具有分散性能的乙丙共聚物粘度指數(shù)改進劑。通過單因素和正交實驗分析可知，以0.5%的過氧化苯甲酰為接枝反應(yīng)的引發(fā)劑(按乙丙共聚物的質(zhì)量計)，馬來酸酐和胺化物加入量分別為乙丙共聚物質(zhì)量的12%和7%，接枝和胺化反應(yīng)溫度分別為160℃和140℃，所得產(chǎn)品的稠化能力在5.83 mm2/s以上，分散性能達到65.22%，可用于配置中高檔潤滑油。 3. 降解產(chǎn)品經(jīng)接枝和胺化反應(yīng)后進一步與抗氧化合物反應(yīng)，在乙丙共聚物大分子鏈上引入抗氧基團，制得一種具有分散和抗氧化性能的多效乙丙共聚物粘度指數(shù)改進劑。通過單因素和正交實驗確定了制備DAOCP的最佳工藝條件，當(dāng)馬來酸酐、多烯多胺、抗氧化合物加入量分別為12%、7%、5%；接枝溫度、胺化溫度、抗氧化反應(yīng)溫度分別為160℃、150℃、160℃時，產(chǎn)品的稠化能力在5.92 mm2/s以上，分散性能達到63.50%，成焦板低于15.8mg，成漆板在4.5級以下，可用于配置中高檔潤滑油。 |
回復(fù)此樓» 猜你喜歡
276求調(diào)劑。有半年電池和半年高分子實習(xí)經(jīng)歷
已經(jīng)有8人回復(fù)
-
接收2026碩士調(diào)劑(學(xué)碩+專碩)
已經(jīng)有3人回復(fù)
-
材料與化工考研調(diào)劑
已經(jīng)有3人回復(fù)
-
081700 調(diào)劑 267分
已經(jīng)有3人回復(fù)
-
一志愿重慶大學(xué)085700資源與環(huán)境，總分308求調(diào)劑
已經(jīng)有3人回復(fù)
-
336化工調(diào)劑
已經(jīng)有4人回復(fù)
-
08工學(xué)調(diào)劑
已經(jīng)有10人回復(fù)
-
263求調(diào)劑
已經(jīng)有6人回復(fù)
-
298求調(diào)劑
已經(jīng)有8人回復(fù)
-
考研化學(xué)308分求調(diào)劑
已經(jīng)有6人回復(fù)
★
愛與雨下: 金幣-1 2012-04-16 14:13:58
愛與雨下: , 請勿灌水 2012-04-16 14:14:23
愛與雨下: 金幣-1 2012-04-16 14:13:58
愛與雨下: , 請勿灌水 2012-04-16 14:14:23
 |
2樓2012-04-16 12:17:22
頻回眄睞
至尊木蟲 (職業(yè)作家)
- 翻譯EPI: 110
- 應(yīng)助: 13 (小學(xué)生)
- 貴賓: 0.566
- 金幣: 17176.4
- 散金: 1586
- 紅花: 30
- 沙發(fā): 3
- 帖子: 3337
- 在線: 545.1小時
- 蟲號: 1238300
- 注冊: 2011-03-19
- 性別: GG
- 專業(yè): 金屬有機化學(xué)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
愛與雨下: 金幣+5 2012-04-16 14:13:30
愛與雨下: , 歡迎常來 2012-04-16 14:14:40
mahongbin: 金幣+150, 翻譯EPI+1 2012-04-16 17:06:12
愛與雨下: 金幣+5 2012-04-16 14:13:30
愛與雨下: , 歡迎常來 2012-04-16 14:14:40
mahongbin: 金幣+150, 翻譯EPI+1 2012-04-16 17:06:12
|
With the development of automotive industry , we need high-level lube for machinery equipment .It is hard to satisfy high speed ,high burthen and high-power through improving refine technics .In modern lube ,it is no doubt that additive is the most important ,which can be useful for reducing friction ,increasing mechine performance .Viscosity index improver is the most important additive in preparation multilevel diesel oil ,hydraulic medium ,and gear compound ,which can improve low-temperature and high-temperature performance . Recently ,we usually used viscosity index improver such PMA ,OCP ,HSD,PIB and so on .As a result of OCP is steady to hot ,easy to body ,good to solve in oil ,and inexpensive to consume ,so it has been widely used in medium-high lube .However ,it is largely lucked for single-action additive .Therefore ,we should lead disperse ,antioxidant and resistance to wear group by chemical ways . Based on the OCP ,this paper has a deep study in viscosity index improver ,which include three aspects . Firstly ,we use organic oxide as evocation agent and thermal oxidization methods to degrade the OCP .Via single factor ,we can ensure the optimizing condition to prepare OCP .When we use 150SN oil ,16% OCP ,0.1% cumene hydroperoxide at 170 oC ,after 4h the stability of the result product is 20,and bodying can reached 6.50mm2/s . Secondly ,we use bonding technique and amination reaction to make the single – action OCP functional .We lead into nitrogen-containing group on the multipolymer molecule ,which can improve the dispersivity . From the single-action and orthogonal test ,we know that 0.5% benzoyl peroxide as a additive ,12% maleic anhydride and 7% amide ,the temperature of bonding and amination 160 oC,140 oC respectly can give a result bodying performance upon 5.83mm2/s and the dispersivity can reach 65.22% ,which can be used in high – medium lube . At last ,we lead into antioxidant group to prepare a dispersive and multiple effect OCP .By single-action and orthogonal test ,we can ensure the optimalizing condition ,12% maleic anhydride ,7% amide ,5% polyphenoils ,and the temperature of bonding ,amination and antioxide are 160 oC, 150 oC , 160 oC respectively .In this way , we obtain a product ,which bonding performance is 5,92mm2/s,dispersivity is 63.5% ,close-burning is below 15.8mg and panel coker is below 4.5 level .In a word ,the product we prepared can be used in medium-high lube. |
3樓2012-04-16 13:25:56
769020087
木蟲 (小有名氣)
- 翻譯EPI: 28
- 應(yīng)助: 0 (幼兒園)
- 金幣: 2391.9
- 帖子: 100
- 在線: 140小時
- 蟲號: 1513351
- 注冊: 2011-11-28
- 性別: GG
- 專業(yè): 礦物學(xué)(含礦物物理學(xué)）
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
愛與雨下: 金幣+5 2012-04-16 14:13:37
愛與雨下: , 歡迎常來 2012-04-16 14:14:44
mahongbin: 金幣+200 2012-04-16 17:06:27
愛與雨下: 金幣+5 2012-04-16 14:13:37
愛與雨下: , 歡迎常來 2012-04-16 14:14:44
mahongbin: 金幣+200 2012-04-16 17:06:27
|
The requirement of lubricating oil is becoming much higher with a rapid development of auto industry. So the simple quality improvement of lubricating oil by refinement can’t satisfy the demanding requirements of high speed, load and power. As we know, additive that would be of great benefit to the improvement of machine function and reduce resistance is the heart of lubricating oil. The main lubricating oil additive is VI (viscosity index) improver which is used in the oil manufacture of multi-level internal combustion engine, hydraumatic and gear. So the addition of VI improver can get multi-level oil both with a better starting performance in low temperature and a proper viscosity in high temperature that can be used widely. Nowadays, the VI improver frequently used is PMA, OCP, HSD, PIB, etc. OCP is widely used in high-end internal combustion engine with a perfect property of heat stability, densification, dissolvment, dissolubility and economic in price. But OCP is still not good enough as a single effect additive. Because of this, a compulsory task of developing an effective and multi-function VI improver is needed immediately by leading in the groups of disperse, antioxidant and wear-resistant through chemical modification. This article develops the new multi-function VI improver based on the OCP. The followings are three direction of research: 1. A controlled degradation by catalyze thermal-oxidation degradation has been used based on the initiator of organic peroxides so that we can ensure the best manufacture condition of OCP VI improver. The final product, which the initiator consists of 150SN base oil, J0010 OCP by 16% and peroxide DIPB by 0.1%, has a shear stability of 20 and densification of more than 6.50mm2/s degraded at 170℃ for 4 hours. 2. After the functionalization treatment of degraded single effect OCP VI improver and import the group with nitrogen to macromolecule chain of OCP through stem grafting and amination, we get an OCP VI improver with dispersity. Through the analyses of single factor and orthogonal experiment we conclude that the product’s densification is more than 5.83 mm2/s and dispersity is 65.22% using peroxide benzoyl as initiator by 0.5% (quality of OCP), maleic anhydride by 12%, amide by 7% under the reaction temperature of 160℃ in stem grafting and 140℃ in amination. So this product can be applied in high-end lubricating oil. 3. The degraded product treated by stem grafting and amination can form a multi-effect OCP VI improver with dispersity and antioxidation after a further reaction with anti-oxidant compound that will lead antioxidant group in macromolecule chain of OCP. Through the best program condition confirmed by single factor and orthogonal experiment, we can find that product’s densification and dispersity is more than 5.92 mm mm2/s and 63.50% with a lower coking and panel of 15.8mg and 4.5 level with maleic anhydride, amide and anti-oxidant compound by 12%, 7% and 5% under the reaction temperature of 160℃ in stem grafting, 150℃ in amination and 160℃ in antioxidant reaction. So this product can be applied in high-end lubricating oil. |
4樓2012-04-16 13:37:35
jeangong
木蟲之王 (文學(xué)泰斗)
- 翻譯EPI: 8
- 應(yīng)助: 129 (高中生)
- 金幣: 68743.7
- 散金: 4
- 紅花: 54
- 帖子: 56257
- 在線: 813.8小時
- 蟲號: 222140
- 注冊: 2006-03-21
- 專業(yè): 無機材料化學(xué)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
愛與雨下: 金幣+5 2012-04-16 14:13:44
愛與雨下: , 歡迎常來 2012-04-16 14:14:49
mahongbin: 金幣+150 2012-04-16 17:06:45
愛與雨下: 金幣+5 2012-04-16 14:13:44
愛與雨下: , 歡迎常來 2012-04-16 14:14:49
mahongbin: 金幣+150 2012-04-16 17:06:45
|
With the development of the automotive industry, the increasingly high demand for machinery and equipment lubricants, and improve the quality of lubricating oil from the refining process alone can not meet the requirements of high speed, high load, high-power and other harsh conditions. The additive is the essence of modern lubricants, played a huge role on the tribological and improve machine performance. Viscosity index improver is used in the preparation of multi-grade engine oil, hydraulic oil and gear oil additives, added in the lubricating oil viscosity index improver, availability of good cold starting performance at high temperatures while maintaining appropriate viscosity multi-grade oil, so oil Four Seasons General, North and South Common. At present, the viscosity index improver polymethacrylate (PMA), ethylene - propylene copolymer (OCP), hydrogenated styrene - diene copolymer (HSD), polyisobutylene (PIB) and so on. Ethylene-propylene copolymer viscosity index improver agent has good thermal stability, the ability of thickening, oil-soluble, and the price is cheap, has been widely used in high-grade engine oil. But as the development of single-effect additives is not enough, the introduction of scattered through various means of chemically modified, antioxidant, anti-wear group, development of efficient multi-functional viscosity index improver is imperative. In this thesis, the main raw material ethylene-propylene copolymer, developed a new multi-functional lubricating oil viscosity index improver. The research work includes the following three aspects: An organic peroxide as initiator, using catalytic thermal oxidation degradation method, the controlled degradation of the ethylene-propylene copolymer. Single factor to determine the optimum conditions for preparation of ethylene-propylene copolymer viscosity index improver, he was elected J0010 type using the the 150SN model base oil, add 16% ethylene-propylene copolymer (total mass), 0.1% of dicumyl peroxide initiator (according to the quality of ethylene-propylene copolymer), the solution for 4h, the shear stability of the obtained product 20 decreased at 170 ℃, and the thickening capacity of more than 6.50mm2 / s. Functional degradation proceeds of a single effect of ethylene-propylene copolymer viscosity index improver by grafting and amination reaction, the introduction of nitrogen-containing groups in the macromolecular chains of the ethylene-propylene copolymer, making it the performance of the decentralized ethylene-propylene copolymer viscosity index improver. Analysis, the single factor and orthogonal experiments to 0.5% over the benzoyl peroxide initiator for the grafting reaction (according to the quality of ethylene-propylene copolymer), the amount of maleic anhydride and amine compounds were ethylene propylene copolymer The quality of 12% and 7%, grafting and amination reaction temperature of 160 ° C and 140 ° C, the thickening ability of the products obtained in more than 5.83 mm2 / s, the dispersion performance of 65.22% can be used to configure high-grade lubricants. Degradation products by grafting and amination reaction further reaction with the antioxidant compounds, the introduction of the antioxidant group, obtained a decentralized and multi-effect of the antioxidant properties of ethylene-propylene copolymer, ethylene-propylene copolymer macromolecular chains material viscosity index improver. The a preparation DAOCP the optimum conditions determined by single factor and orthogonal experiments, maleic anhydride, polyene polyamines, the amount of antioxidant compounds were 12%, 7%, 5%; graft temperature, the temperature of the amination anti-oxidation reaction temperature is 160 ° C, 150 ° C, 160 ° C, the thickening capacity of more than 5.92 mm2 / s, the dispersion performance of 63.50% into the coke plate is less than 15.8mg, into the paint board 4.5 can be used for high-grade lubricating oil in the configuration. |
5樓2012-04-16 13:54:16
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 mahongbin 的主題更新
| 5 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 291求調(diào)劑 +5 | 孅華 2026-03-22 | 5/250 |
|
|---|---|---|---|---|
|
[考研] 0703 調(diào)劑 +3 | 我可以上岸的對?/a> 2026-03-16 | 6/300 |
|
|
|
[考研] 招08考數(shù)學(xué) +4 | laoshidan 2026-03-20 | 11/550 |
|
|
|
[考研] 323求調(diào)劑 +6 | 洼小桶 2026-03-18 | 6/300 |
|
|
|
[考研] 308求調(diào)劑 +3 | 墨墨漠 2026-03-21 | 3/150 |
|
|
|
[考研] 293求調(diào)劑 +12 | zjl的號 2026-03-16 | 17/850 |
|
|
|
[考研] 生物學(xué)調(diào)劑 +5 | Surekei 2026-03-21 | 5/250 |
|
|
|
[考研] 考研調(diào)劑 +4 | 來好運來來來 2026-03-21 | 4/200 |
|
|
|
[考研] 286求調(diào)劑 +10 | Faune 2026-03-21 | 10/500 |
|
|
|
[考研] 一志愿南大，0703化學(xué)，分?jǐn)?shù)336，求調(diào)劑 +3 | 收到VS 2026-03-21 | 3/150 |
|
|
|
[考研] 296求調(diào)劑 +4 | www_q 2026-03-20 | 4/200 |
|
|
|
[考研] 279分求調(diào)劑 一志愿211 +14 | chaojifeixia 2026-03-19 | 15/750 |
|
|
|
[考研] 303求調(diào)劑 +5 | 睿08 2026-03-17 | 7/350 |
|
|
|
[考研] 一志愿中國石油大學(xué)（華東） 本科齊魯工業(yè)大學(xué) +3 | 石能偉 2026-03-17 | 3/150 |
|
|
|
[考研] 一志愿華中科技大學(xué)，080502，354分求調(diào)劑 +5 | 守候夕陽CF 2026-03-18 | 5/250 |
|
|
|
[考研] 317求調(diào)劑 +5 | 申子申申 2026-03-19 | 9/450 |
|
|
|
[考研] 材料學(xué)碩297已過四六級求調(diào)劑推薦 +11 | adaie 2026-03-19 | 11/550 |
|
|
|
[考研] 353求調(diào)劑 +3 | 拉鉤不許變 2026-03-20 | 3/150 |
|
|
|
[考研] 0703化學(xué)調(diào)劑 +5 | pupcoco 2026-03-17 | 8/400 |
|
|
|
[考研] 333求調(diào)劑 +3 | 文思客 2026-03-16 | 7/350 |
|