polar group造句
例句與造句
- Lord snow , it will be recalled , talked about “ the two cultures and the scientific revolution ” and expressed his concern that “ the intellectual life of the whole of western society is increasing being spilt into two polar groups
斯諾爵士曾談到過“兩種不同的文化和科技革命” ，并表示擔(dān)心“西方社會和知識生活正在走向兩極分化” 。 - The synthesis of modified polyolefin which grafted polar groups ， effects on interfacial adhesion of glassfiber reinforced polyolefin composite systerm and applications in glass fiber sizing were introduced in this paper
本文介紹了接枝極性基團(tuán)的改性聚烯烴的合成及其對玻璃纖維增強(qiáng)聚烯烴復(fù)合體系界面結(jié)合的影響以及在玻璃纖維浸潤劑配方中的應(yīng)用。 - It was observed that the inclusion complexes of 3 - cyclodextrin and its polylactide - garfted copolymer with insulin could be formed and the inclusion behaviors were affected by the amount of 3 - cyclodextrin , temperature as well as ph value . the formation mechanism of the supramolecular systems between 3 - cyclodextrin and insulin was the similar to that between 3 - cyclodextrin and the above - mentioned aromatic amino acids . because of the three - dimensional structure of insulin and the exterior polar groups of its aggregates , the molecular recognition and inclusion of 3 - cyclodextrin with insulin were hindered
由于受主客體之間的尺寸匹配性的影響， ?環(huán)糊精與這三種芳香族氨基酸形成了不同包合比的包合物， ?環(huán)糊精分別與l ?苯丙氨酸和l ?酪氨酸形成了1 ： 1的包合物，而與l ?色氨酸卻形成了2 ： 1的包合物，各包合物的穩(wěn)定常數(shù)也有所不同。 - As to the high - density polyethylene , two strategies were performed : ( 1 ) after being modified by grafting polar groups on its backbone , polyethylene and organic montmorillonite were melt mixed directly , which could obtain the polyethylene / montmorillonite nanocomposites . the effect of groups grafted on the backbone on the efficiency of intercalation was investigated in this paper ; ( 2 ) choosing the grafters obtained in this experiment as the compatilizers , polyethylene / montmorillonite nanocomposites had also been prepared by melt mixing the polyethylene , grafter and organic montmorillonite . the difference of grafters and sequence of mixing on the intercalation result had also been analyzed
對于高密度聚乙烯，采用以下兩種思路進(jìn)行： ( 1 )對聚乙烯首先進(jìn)行功能化改性，使聚乙烯分子鏈上接枝上不同的極性基團(tuán)，將改性后的聚乙烯再同有機(jī)蒙脫土直接熔融復(fù)合，成功的制備了聚乙烯蒙脫土納米復(fù)合材料，并考察了接枝到聚乙烯主鏈上基團(tuán)的不同對最終插層效果的影響； ( 2 )選用制得的接枝物作為相容劑，將聚乙烯，接枝物，有機(jī)蒙脫土三者熔融復(fù)合，也可以得到聚乙烯蒙脫土納米復(fù)合材料，并對選用不同的接枝物作為相容劑以及復(fù)合順序?qū)ψ罱K插層效果的影響加以分析。 - The dispersion of mmt and the properties of composites were basically determined by the nature of organo - mmt and the polarity of the polymer chains . the intercalated nanocomposites could be explained in terms of the formation of " ladder " structure due to the excessive polar groups on the polymer chains which adhere adjacent silicate sheets
插層高分子鏈的極性基團(tuán)含量要適宜；否則，極性基團(tuán)將相鄰片層“膠粘”形成穩(wěn)定的“梯形”結(jié)構(gòu)，導(dǎo)致高分子鏈插層受阻，易形成插層型納米復(fù)合材料。 - It's difficult to find polar group in a sentence. 用polar group造句挺難的
- The experiment result discovered the grafting effect of crylic acid and acrylamide were obvious which can be proved by the sem photoes . by the ft - ir testing of the grafted uhmwpe fabric , we discovered that some new polar groups were introduced to the surface . then by the dynamic wetting experiment of the grafted uhmwpe fabric , we concluded that the wetting time was a parabola relation with the graft ratio and the wetting time of the grafted uhmwpe fabric was less than that of untreated fabric . the results showed that after the coradiation grafting , uhmwpe fiber ' s surficial nonreactivity could be improved effectively
通過對接枝uhmwpe織物的紅外光譜分析，發(fā)現(xiàn)其表面引入了許多新的極性基團(tuán)。最后運用了纖維動態(tài)浸潤性分析了接枝后的效果，得到所測浸潤穩(wěn)定時間與接枝率成拋物線關(guān)系，而且接枝樣品的浸潤穩(wěn)定時間都比未處理樣品的浸潤穩(wěn)定時間小些，這說明了共輻照接枝的方法可以有效地改善uhmwpe纖維表面惰性，達(dá)到uhmwpe纖維表面改性的目的。 - The results indicated that the dimension , shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c , but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased , melting temperature and decomposition temperature decreased , in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o , c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests . the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big . this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60 , 30 : 30 - 40 and 60 : 15 - 30 respectively , the friction coefficient was relatively small . the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time , the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle , lubricant transfer film could be formed on metal surface , thus direct contact between the surface of metal friction pair rings was reduced . their working life was elongated extremely ; there was mainly much graphite , a little ptff , moo3 , feso4 , cus and so on in lubricant transfer film
試驗結(jié)果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機(jī)填料會使復(fù)合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應(yīng)；碳纖維表面含有c = o及c - o - c等極性基團(tuán)，有利于提高其與其它組分的相容性，提高層間剪切強(qiáng)度；均勻設(shè)計試驗方法能夠用較少的試驗次數(shù)找出配方與摩擦性能間的關(guān)系，擬合曲線基本能表示各配方的摩擦系數(shù)發(fā)展趨勢；配方中不加銅粉或不加石墨，其摩擦系數(shù)均較高，說明銅粉和石墨應(yīng)該配合使用；當(dāng)銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數(shù)均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結(jié)晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉(zhuǎn)移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉(zhuǎn)移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。 - Intercalation and exfoliation behaviors of organo - mmts in low density polyethylene ( ldpe ) and copolyethylene / mmt systems have been investigated . it was found that ldpe has certain intercalation capability , while ethylene vinyl - acetate copolymer ( eva ) with polar groups exhibits some compatibilization and excellent intercalation capability
結(jié)果表明，非極性的ldpe插層能力極其有限，聚乙烯共聚物具有良好的插層能力； mmt分散效果以及復(fù)合材料的性能取決于高分子鏈的極性和有機(jī)蒙脫土的性質(zhì)。 - This is because they have inclusive between the polar groups of nylon and organo - mmt ( ommt ) . however , pp is a kind of non - polar polymer with mmt being difficult to realize complete intercalation and exfoliation . therefore , the domestic research about the pp / mmt nanocomposites were still little
這是由于尼龍的極性基團(tuán)與有機(jī)化蒙脫土的極性基團(tuán)之間具有相容性，而聚丙烯( pp )是一種非極性的聚合物，與蒙脫土不易實現(xiàn)完全的插層剝離，因此國內(nèi)關(guān)于pp蒙脫土納米復(fù)合材料的研究還鮮有報道。