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the grafting degree
相关语句
  接枝率
     The grafting degree was above 2.1%.
     接枝率达 2 .1%以上。
短句来源
     The effect of the content of K 2S 2O 8 on the grafting degree of PB g SAN copolymer and the impact strength of ABS resins were examined.
     考察了引发剂K2 S2 O8用量对PB g SAN接枝共聚物的接枝率及制得的ABS树脂的冲击强度的影响。
短句来源
     Under the same rubber content, the grafting degree of PB g SAN initiated by K 2S 2O 8 is lower than those initiated by oxidation reduction initiator.
     采用氧化 -还原引发体系引发聚合有利于接枝反应的进行 ,在 PB含量相同时 ,采用氧化 -还原引发体系合成的 PB- g- SAN接枝共聚物的接枝率比采用 K2 S2 O8合成的接枝共聚物接枝率高。
短句来源
     The results showed that,the grafting degree was the highest and NR-g-(GMA-co-St) had the best mechanical properties when the GMA/St/DCP was 8/4/0.3 and the grafting temperature was 160 ℃.
     结果表明,GMA、St和DCP质量分数分别为8%、4%和0.3%,接枝温度为160℃时,NR-g-(GMA-co-St)的接枝率最高,综合力学性能最好;
短句来源
     Influence of Reactive Extruding Conditions on the Grafting Degree, Grafting Efficiency and Melt Flow Rate of PP-g-GMA
     反应挤出条件对PP-g-GMA接枝率、接枝效率和熔体流动速率的影响
短句来源
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  “the grafting degree”译为未确定词的双语例句
     When polymerization was initiated by the compound of BP and 2,4,6-Trimethyl Benzoyl Diphenylphosphine Oxide(TPO),and the dosage of NPGDA was 2.5% mol concentration of monomer,the grafting degree came up to 30.1%.
     以2,4,6-三甲苯甲酰基-二苯基氧化膦(TPO)为共引发剂,NPGDA用量为单体量的2.5%时,接枝程度最高,为30.1%. 采用均聚型引发剂与接枝型引发剂(BP)复配,可提高接枝程度,但在浓度相同时接枝程度最低.
短句来源
     The presence of A174 is helpful to improve the percentage of MAH grafting, and the grafting degree of the product(HDPE-g-MAH-A174) is greater than 0.59%; its melt-flow index is between 0.3~0.53g/10min.
     接枝反应中第二单体A174的存在可以促进接枝反应的进行,螺杆转速的增加可同时引起产物中MAH和A174单元含量的明显增加,可制得具有较高MAH和A174单元含量和较好熔体流动性能的接枝产物(HDPE-g-MAH-A174,MAH%≥0.59%,MFR=0.3~0.53g/10min)。
短句来源
     The result showed when maintaining MAH concentration and increasing St concentration, the grafting degree of MAH reached maximum at St:MAH=1mol:1mol;
     实验表明当只改变St用量时,MAH接技率在St:MAH=1:1(摩尔比)达到最大,而接枝物的MFR一直减小;
     The optimum solid phase grafting conditions are that the molar ratio of GMA and St, the reaction time, the amounts of GMA and BPO are 2, 3.5 hours, 10 and 5 parts, respectively. Adding St as a comonomer increases the grafting degree of GMA and reduces the degradation of PP macromolecular chains.
     结果表明固相接枝PP反应条件为[GMA [St]=2,反应3 5h,加入GMA10份,BPO5份。St的加入有助于GMA与PP的接枝,同时在一定程度上抑制了PP的降解。
短句来源
     The results showed when the grafting degree was 15% and kaolin content was 10% , the blend system had a better tensile strength.
     结果表明在接枝度为15%、高岭土填充量为10%时,体系具有较高的拉伸强度.
短句来源
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  相似匹配句对
     THE GRAFTING OF SILK
     蚕丝的接枝
短句来源
     After grafting, the R.
     接枝条件:剂量率为0.18Mrads/hr,总辐照剂量为4.32Mrads,接枝率为6.5%。
短句来源
     Polypropylene Grafting Modification
     聚丙烯的接枝改性
短句来源
     FACIAL NERVE GRAFTING
     面神经移植——附4例报告
短句来源
     Degree of graphitization
     石墨化度
短句来源
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  the grafting degree
The grafting degree was increased with theswelling degree of the grafted film.
      
The higher the grafting degree of membrane, the lower the electrical conductivity of metal feed solutions observed.
      
The loading of a hydrophobic probe molecule can be controlled by the grafting degree of HMCMP hydrogels.
      
The grafting degree influences the conformation of the hydrophobically modified CMP (HMCMP) in solution and leads to the formation of hydrophobic clusters firstly in the HMCMP solutions and further in the HMCMP hydrogels.
      
The grafting degree was followed by titration methods as function of the time of reaction and amount of initiator.
      
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Graft copolymerization of styrene. (St) onto humic acid (HA), using H_2O_2- FeCl_2redox system as initiator in DMOSmedium was investigated.It was found that HA had dis-tinct inhibiting and retarding effect on the polymerization of St,and the ratio of H_2O_2-FeCl_2 was an important factor influencing the graft copolymerization.With increase of theH_2O_2-FeCl_2 ratio,the rate of polymerization increased,while the grafting cfficiency decrea-sed, the grafting degree approched a maximal value when the H_2O_2-FeCl_2...

Graft copolymerization of styrene. (St) onto humic acid (HA), using H_2O_2- FeCl_2redox system as initiator in DMOSmedium was investigated.It was found that HA had dis-tinct inhibiting and retarding effect on the polymerization of St,and the ratio of H_2O_2-FeCl_2 was an important factor influencing the graft copolymerization.With increase of theH_2O_2-FeCl_2 ratio,the rate of polymerization increased,while the grafting cfficiency decrea-sed, the grafting degree approched a maximal value when the H_2O_2-FeCl_2 ratio was 3(mol/mol).The grafting efficiency and grafting degree increased with increase of polym-erization temperature The ratio of St to HA also had a direct influence on the graftingefficiency and grafting degree but not on the grafting ratio. The appearance of a newadsorption band (1120cm~(-l)) in the IR spectrum of copolymer was attributed to C-O-Clink formed in the HA-g-PSt molecule during the polymerization. The product obtainedby further sulfonation of graft copolymer is readily Soluble in water, acid and alkalisolution.

研究了腐植酸(HA)与苯乙烯(St)以H_2O_2-FeCl_2为引发体系的接枝共聚。结果表明,HA对St聚合有阻聚及滞聚作用。接枝度在H_2O_2/FeCl_2=3(摩尔比)时有极大值,提高聚合温度可使接枝效率和接枝度同时增加、增加St-HA的用量比可使接枝度增加,但接枝效率降低,接枝比基本不变。由接枝共聚物的红外光谱分析得出HA与PSt是以C-O-C连接的。接枝共聚物的磺化产物在水和酸性介质中均能溶解。

The heterogeneous graft copolymerization of a-methylacrylic acid on the surface of H-press.polyethylene granules was investigated in a medium of water. The grafting degree increases with the concentration of monmer,initiator, reaction time and temperature.The presence of grafted polymethylic acrylic acid chain structure was verified and analysed by SEM,DTA,infrared absorption spectroscopy,pyrolysis gas chromatography,etc.

本文研究在水介质中,α-甲基丙烯酸在高压聚乙烯颗粒表面进行的非均相接枝共聚反应,它的接枝度随反应时间.反应温度、单体浓度及引发剂浓度的增加而提高.并用扫描电镜、红外光谱,差热分析及裂解色谱等方法,分析证实了接枝链结构的存在。

Acrylic acid-grafted polyethylene (PE) films have been prepared by γ-radiation and the grafting degrees were determined gravimetrically. It was indicated that the grafting degrees increased with the increasing doses under the same dose rates. XPS results showed that the mole ratios of polyacrylic acid (PAA) to PE were dependent on the grafting degrees. This is the basis of XPS characterization of the grafting. XPS and SEM studies found that the distributions of PAA on the surfaces of...

Acrylic acid-grafted polyethylene (PE) films have been prepared by γ-radiation and the grafting degrees were determined gravimetrically. It was indicated that the grafting degrees increased with the increasing doses under the same dose rates. XPS results showed that the mole ratios of polyacrylic acid (PAA) to PE were dependent on the grafting degrees. This is the basis of XPS characterization of the grafting. XPS and SEM studies found that the distributions of PAA on the surfaces of PE films were not uniform and a part of the surface for every sample was not covered with PAA. This is very important for the preparation of membranes and the studies on their functions.

用氮气氛下预辐照方法制备了丙烯酸接枝聚乙烯(PE)膜,用重量法测定了接枝率。结果表明,在相同剂量率下接枝率随总剂量的增加而增高。XPS研究表明,表面聚丙烯酸(PAA)与PE的摩尔比与接枝率有一定的关系,从而成为其XPS表征的基础。XPS和SEM研究表明,PAA在PE膜表面分布呈不均匀状态,可能有一部分PE表面未被接枝,这个结果对于功能膜的制备具有指导意义。

 
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