In this thesis, the development of emulsion polymerization theory and related new technologies are comprehensively reviewed, and the synthetic technologies of acrylate latex modified by organosilicon both at home and abroad are also reviewed. based on the current development and research in this field, attentions of this study are focused on three ways for preparing novel acrylate latexes modified by organosilicons, that is, 1 ) the acrylate monomers are copolymerized with unsaturated silicons by emulsion copolymerization ; 2 ) a new latex with microphase separation morphology is synthesized, which shows a core - shell structure character ; 3 ) soap - free polymerization is explored for preparing a higher - performance latex using an unsaturated silicon monomer, different acrylates and a reactive emulsifier. by using techniques of delaying addition of organosilicon monomer and a hydrolysis inhibitor, the hydrolysis and condensation of 3 - ( trimethoxysilyl ) propyl methacrylate during polymerization can be effectively prevented, as a result, organosilicon content in the macromolecular chain is increased
同時採用有機硅單體延遲滴加及添加水解抑制劑等技術,有效防止了-甲基丙烯酰氧基丙基三甲氧基硅烷在乳液聚合過程中的過渡水解及縮合反應,提高了聚合物大分子鏈中有機硅鏈節的含量;利用紅外光譜與差示掃描量
熱儀對產物分子結構進行了表徵,並通過對共聚產物力學和吸水率的測試,證實了本研究所制備的有機硅改性丙烯酸酯共聚物具有比純丙烯酸酯聚合物更優良的力學及耐水性能;從分子設計角度出發,利用醇解反應合成出水解、縮合反應速率較慢的兩種新型不飽和有機硅單體: ?甲基丙烯酰氧基丙基三乙氧基硅烷和?甲基丙烯酰氧基丙基三異丙氧基硅烷;利用
核磁共振對新型硅烷單體結構進行了證實;研究表明利用新型硅烷單體可以制備出高硅烷含量的有機硅改性丙烯酸酯乳液,且其聚合產物具有較高的力學及耐水性能。
The main equipment here is a thermal cycler system for nucleic acid amplification ( pcr, quantitative fluorescence detection or common )
主要儀器就是
核酸擴增
熱循環儀( pcr儀,實時熒光或普通的) 。
Iron is, in fact, the dead end of nuclear reaction
鐵其實是
熱核反應的終站。
Immediately following the detonation of a nuclear weapon in the air, an intensely hot and luminous (gaseous) fireball is formed.
核炸彈在空中爆炸后,緊接著形成灼
熱而明亮的(氣體)火球。
It will probably have to be with the help of the plentiful deuterium in the ocean, used as thermonuclear fuel.
這必須藉助于把海洋中豐富的氘用作
熱核燃料。
Thin weak is make mammary development plump, still should feed more contain the food with fast quantity of heat to be like lean lean kind, egg kind, oil of earthnut, sesame seed, walnut, legume, vegetable
瘦弱者為使乳房發育豐滿,還應多食含
熱量高的食物如瘦肉類、蛋類、花生、芝麻、
核桃、豆類、植物油等。
The thermonuclear reactions of the sun energize the human body.
太陽的
熱核反應給人類以能量。
Abstract : large time delay exists in complicated practical processes. for example, in fccu ( fluidized catalytic cracker unit ) reactor - regenerator, the feed is preheated through heat exchanging from fractional column slurry, thus results in large time delay. a predictive control system is designed for such processes, where the kernal algorithm is dynamic matrix control. application results show that the control behavior is improved than original pid control
文摘:實際的復雜工業過程,往往具有大的時滯,例如:煉油廠催化裂化裝置的反應再生系統,其原料油預
熱通過油漿換
熱實現,因此時滯特別大.本文針對這一類大的時滯過程,設計了以動態矩陣控制為
核心演算法的預測控制系統,運行實踐表明:這一控制方案比原pid控制在控制質量上有較大提高
A nuclear reactor generates prodigious amounts of heat.
一座
核反應堆能發出巨大的
熱量。
It increases " the danger of a thermo - nuclear holocaust.
它增加了「
熱核大屠殺的危險。 」
Plumes are thought to be columns of exceptionally hot material rising from deep within the earth ' s mantle, perhaps even from its bottom, where the mantle contacts the earth ' s liquid core
地慢羽被認為是米自地慢深處異常熾
熱的柱體,或許來自連接地球液體
核的地慢的底部。
Adhering to chinese government ' s policy to encourage the development of the environment - protecting and energy - saving products, taxun is focusing on providing customized products and solutions for the customers to achieve the aim of building energy - saving, prevention of indoor air pollution and both indoor and outdoor static and dirt by introducing the japanese famous brand “ kouzuka ” transparent iruv double cut glass coating and co - manufacturing with japanese sketch the indoor environment purification and super water hydrophile self - cleansing products based on the world ' s top ranking photolysis technology
公司積極響應國家大力發展環保節能產品,實現經濟可持續發展的號召,在引進日本著名品牌"好瑞佳"透明隔
熱塗劑系列產品的同時,與日本擁有世界頂尖
核心技術的思凱奇公司共同生產製造基於光觸媒技術的室內環境凈化和超親水自潔系列產品,致力於為客戶提供建築節能、室內有害氣體治理、室內外防污防靜電整體解決方案的設計和實施。
In this paper, by checking up the heat calculation about the experiment results of the single row tube and double waves belt, i come at the function of the heat transfer factor j and the reynolds number re, i also come at the function of the f r i ct i on factor ^ " and the reyno i ds number re
本文還通過對單排雙波帶散
熱器的實驗結果進行校
核熱計算,回歸導出該種散
熱器的傳
熱因子j及摩擦因子f與雷諾數re的數學表達式,從而為用這種芯子根據廠家要求設計散
熱器提供了理論依據。
The properties and compositions of the bio - oi1 from fast pyrolysis of apricot stone were studied
摘要對杏
核熱解油的性質和組成進行了研究。
Based on thermodynamics, effects of constituent fluctuations on nucleation is studied and testified in this paper
筆者以形
核熱力學為基礎,討論了外來成分起伏對鋼液形
核的影響,並通過實驗進行了難證。
In the end of the paper, we discussed the particular advantage of rf - pepld for deposition of c - bn thin films and the important meaning of the nanothermodynamic theory proposed by this paper
文章最後提出了常溫下rf 『 pepld方法沉積立方氮化硼薄膜的獨特優勢並討論了本文提出的金剛石的納米成
核熱力學理論的重要意義。
We analyzed the nucleation act of diamond in chemical vapor deposition ( cvd ) from the view of thermodynamics in the paper. a new nanothermodynamic approach was proposed, based on the established carbon thermodynamic equilibrium phase diagram
本文從熱力學角度分析了化學氣相沉積( cvd )金剛石過程中,金剛石的成核行為,提出了一種新的金剛石的納米成核熱力學觀點。