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羟甲基的英文

  • methylol; hydroxymethyl; hydroxymethyl group; methylol group

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  • 例句与用法
  • The analysis results of the reducing sugar and hmf content in bread crumb with different storage time showed that the browning of bread crumb was caused by maillard reaction
    通过对不同贮存时间面包瓤中还原糖含量和羟甲基糠醛( hmf )含量的测定,表明面包褐变主要是由美拉德反应引起。
  • Boracic modified penolic resin with boracic acid and hydroxymethyl phenol was manufactured after hydroxymethyl phenol was created with in a special way
    摘要通过在一定条件下,先将苯酚、甲醛制成羟甲基酚,然后改变条件与硼酸共聚,制得具有合成稳定和较好耐热性的硼改性酚醛共聚树脂。
  • The water - borne polyurethane ( wpu ) emulsion modified by epoxy resin was prepared using toluenediisocyanate ( tdi ) , polyether ( n220 ) , dimethylolpropionic acid ( dmpa ) , epoxy resin , hydroxypropyl acrylate ( hpa ) and so on
    摘要以甲苯二异氰酸酯( tdi - 80 ) 、聚醚二醇( n220 ) 、二羟甲基丙酸( dmpa ) 、环氧树脂和丙烯酸羟丙酯( hpa )为主要原料,合成了环氧改性的水性聚氨酯乳液。
  • The novel title compound was synthesized with benzaldehyde , isobutyraldehyde , phosphorus trichloride as raw materials . the total yield was 40 . 8 % . the structure was confirmed by 1h nmr , 31p nmr and elemental analysis
    摘要以苯甲醛、异丁醛、三氯化磷为原料合成了新型的1 , 3 , 2 -氧磷杂环类化合物2 -苯羟甲基5 , 5 -二甲基4 -苯基2 -氧代1 , 3 , 2 -二氧磷杂环己烷,总收率为40 . 8 % ,并对其进行了nmr研究和结构表征。
  • In the synthesizing process , the ph value in hydroxymethylated stage , the reaction time , temperature and the moore ratio of sodium bisulfate to melamine in the sulfonated stage , and die ph value in the condensation stage , are important factors influencing on the performance of jd
    在合成过程中,羟甲基化阶段的ph值,磺化阶段的ph值、时间、温度和投料摩尔比,缩合阶段的ph值等对减水剂性能影响显著。
  • Self - crosslinkable latex at room temperature with high elasticity is prepared when n - hydroxymethyl acrylamide is used as self - crosslinkable monomer , and poly solidum maleate is applied as protective colloid , and pre - emulsified and semi - continuous seeded emulsion polymerization is adopted
    采用n -羟甲基丙烯酯胺为自交联单体,聚马来酸钠为保护胶体,采用预乳化半连续种子乳液聚合工艺,制备出高弹性室温自交联乳液。
  • Fibers based on poly ( acrylic - co - acrylamide ) ( caa ) and poly ( vinyl alcohol ) ( pva ) blends were prepared using n - hydroxymethyl acrylamide as a post - crosslinking agent . the blend aqueous solution was extruded into an acetone coagulation bath to form continuous caa / pva ( camp ) gel fibers via a wet - spinning method . the camp gel fibers were dehydrated by exchanging water with acetone , thermal - crosslinked
    以n -羟甲基丙烯酰胺为后交联剂,制备丙烯酸-丙烯酰胺共聚物聚乙烯醇共混物( camp )溶液,挤出成形后,经丙酮浴固化成形,并经后交联,制备出具有较强吸水和保水能力,且有一定强力的camp纤维。
  • The source of uncertainty was analyzed in detail about the determination of the epoxide index for epoxy resins by infrared spectroscopy , the determination of the temperature and the heat of the curing reaction for epoxy resins by differential scanning calorimetry , the determination of the hydroxymethyl index for phenolic resins by infrared spectroscopy and the reverse phase method of the high performance liquid chromatography for phenolic resins . the uncertainties of these testing methods were determined . some applied tests were carried out
    在大量试验研究的基础上,首次对红外光谱法测定环氧树脂环氧指数试验方法、差示扫描量热法测定环氧树脂反应温度和反应热试验方法、红外光谱法测定酚醛树脂羟甲基指数试验方法、酚醛树脂的高效液相色谱分析方法的不确定度来源进行了分析,对测量方法的不确定度进行了评定,并进行了应用试验。
  • Abstract : the basic synthesis process parameters of water reducing agent of melamune series was studied . the factors affecting hydroxymethylation , stlfonation , low - ph condensation , and high - ph condensation were thoroughly studied . from that , the good conditions for every stages were determined . by addition of compound additives made of some cheap components , the production cost of melamine water reducing agent was greatly decreased so that the spread and application value was increased
    文摘:研究了三聚氰胺系列减水剂的基本合成工艺,考察了各种因素对羟甲基化阶段、磺化阶段、缩聚阶段的影响,确定了各阶段的最佳工艺条件,通过加入一些廉价组分制成复合型减水剂,使得三聚氰胺系列减水剂的生产成本大幅度降低,提高了产品的推广应用价值
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Last modified time:Fri, 15 Aug 2025 00:29:56 GMT

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