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混合松香    
相关语句
  mixed rosin
    RESEARCH ON EFFECTS OF MIXED ROSIN ON DISPROPORTIONATION
    混合松香对歧化反应影响的研究
短句来源
    However,quality problems such as socalled "mixed rosin" should be seriously paid attention to.
    但是,"混合松香"等质量问题必须引起各方面的足够重视。
短句来源
    Troubles of "mixed rosin" appeared at present made the disproportionated rosin manufacture some difficulties that many disproportionated rosin products cannot reach quality index of many customers or may result in higher production cost.
    目前出现的"混合松香"问题,使得一些歧化松香生产厂家遇到了一些困难,生产出来的歧化松香产品达不到广大客户的质量指标要求或者提高了生产成本。
短句来源
    Authors carried out an experiment to investigate effects of the mixed rosin on disproportionation.
    针对"混合松香"对歧化反应的影响,作者进行了实验研究。
短句来源
  mixed gum rosin
    ANALYZING AND CONTROLLING OF "MIXED GUM ROSIN
    “混合松香”剖析及控制
短句来源
    The concept,character and influence of mixed gum rosin were summerized.
    介绍了混合松香的概念、内在品质及影响 ;
短句来源
    The emerging causes of mixed gum rosin were analyzed,and the controlling methods were also produced.
    分析了混合松香产生的原因 ; 提出了对混合松香的控制建议。
短句来源
  mixed gum rosin
    ANALYZING AND CONTROLLING OF "MIXED GUM ROSIN
    “混合松香”剖析及控制
短句来源
    The concept,character and influence of mixed gum rosin were summerized.
    介绍了混合松香的概念、内在品质及影响 ;
短句来源
    The emerging causes of mixed gum rosin were analyzed,and the controlling methods were also produced.
    分析了混合松香产生的原因 ; 提出了对混合松香的控制建议。
短句来源
  mixed rosin
    RESEARCH ON EFFECTS OF MIXED ROSIN ON DISPROPORTIONATION
    混合松香对歧化反应影响的研究
短句来源
    However,quality problems such as socalled "mixed rosin" should be seriously paid attention to.
    但是,"混合松香"等质量问题必须引起各方面的足够重视。
短句来源
    Troubles of "mixed rosin" appeared at present made the disproportionated rosin manufacture some difficulties that many disproportionated rosin products cannot reach quality index of many customers or may result in higher production cost.
    目前出现的"混合松香"问题,使得一些歧化松香生产厂家遇到了一些困难,生产出来的歧化松香产品达不到广大客户的质量指标要求或者提高了生产成本。
短句来源
    Authors carried out an experiment to investigate effects of the mixed rosin on disproportionation.
    针对"混合松香"对歧化反应的影响,作者进行了实验研究。
短句来源
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This paper deals with the causes of the high crystallizing tendency of the rosin from Finus mossoniana; the relationships between the crystallizing tendency, the pine species and the resin acid composition; and the method of inhibiting the crystallizing tendency of rosin. The experiments concerned were carried out in a series of changes of the contents of certain resin acids of rosin. The crystallizing tendency of rosin was determined by the Palkin-Smith's method (rosin: acetone = 1:1) which is internationally...

This paper deals with the causes of the high crystallizing tendency of the rosin from Finus mossoniana; the relationships between the crystallizing tendency, the pine species and the resin acid composition; and the method of inhibiting the crystallizing tendency of rosin. The experiments concerned were carried out in a series of changes of the contents of certain resin acids of rosin. The crystallizing tendency of rosin was determined by the Palkin-Smith's method (rosin: acetone = 1:1) which is internationally commonly used. Results of the study can be summed up as follows:

本文研究了我国马尾松松香结晶趋势较大的原因、结晶趋势与树种、树脂酸组成之间的关系以及抑制松香结晶趋势的方法。试验采用改变松香中某种树脂酸含量的方法进行。结晶趋势测定采用国际通用的Palkin和Smith法(松香:丙酮=1:1)。 试验得到下列结果: 1.马尾松松脂和松香中均含有较高的枞酸型树脂酸(70%以上),导致松香具有较高的结晶趋势。 2.改变马尾松松香组成中海松酸型酸、脱氢枞酸的含量对减小其结晶趋势无明显的作用。对松香结晶趋势起重要作用的是枞酸型树脂酸中的长叶松酸与枞酸的含量。 3.马尾松松脂(60%)与湿地松松脂(40%)混炼或马尾松松香与适量(40%,以松香计)湿地松松香混合,混合松香具有良好的结晶趋势指标,析出结晶的时间约2小时,其组成中长叶松酸与枞酸的含量比在1:1.10—1.40范围内。 4.江西吉安湿地松松香具有较小的结晶趋势,析出晶体时间约2小时。但如加入纯枞酸使其量为松香量的30%以上时,其结晶趋势即行恶化,在15分钟内即析出树脂酸晶体。

The concept,character and influence of mixed gum rosin were summerized.The emerging causes of mixed gum rosin were analyzed,and the controlling methods were also produced.

介绍了混合松香的概念、内在品质及影响 ;分析了混合松香产生的原因 ;提出了对混合松香的控制建议。

State on quality of Chinese gum rosin from 1995 through 2002 was investigated in detail.Data were statistically analyzed and compared with the main technical specifications required in GB/T 8145-1987.Statistical average results showed that the present state on quality of Chinese gum rosin is superior to the specification required in GB/T 8145-1987 and is still ranking international top level,if only experimental values were considered.However,quality problems such as socalled "mixed rosin" should be seriously...

State on quality of Chinese gum rosin from 1995 through 2002 was investigated in detail.Data were statistically analyzed and compared with the main technical specifications required in GB/T 8145-1987.Statistical average results showed that the present state on quality of Chinese gum rosin is superior to the specification required in GB/T 8145-1987 and is still ranking international top level,if only experimental values were considered.However,quality problems such as socalled "mixed rosin" should be seriously paid attention to.According to the increasing tapping pine species and various uses of gum rosin,adoptation at different standards of gum rosins for individual pine species or individual uses would be the trend to meet the quality requirements in the future.

 从各种不同渠道详细调查了1995年至2002年中国脂松香的质量状况。对调查结果进行了统计分析,并将调查结果与脂松香国家标准(GB/T8145-1987)的各项主要技术指标进行了相应的对比研究。结果表明,单就技术指标的统计平均结果而言,各个级别的脂松香质量均优于目前的国家标准要求,而且仍然具有国际领先水平。但是,"混合松香"等质量问题必须引起各方面的足够重视。根据中国采脂树种和客户实际需求的不断变化,按照不同树种或不同用途分别制定分类松香标准或专用松香标准将是未来质量要求的发展趋势。

 
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