| 1. | Esi - ms characterization of poly dimethylsiloxane with reactive groups 电喷雾质谱法表征带反应基团的聚二甲基硅氧烷 |
| 2. | 0 . 01 % cm m . silicones . polydimethylsiloxanes . determination of silanetriyl radicals silanetriyl content less then 0 , 01 per cent . gaschromatographic method 工业用碱性硅树脂.聚二甲基硅氧烷.硅烷三醇基的含量测定 |
| 3. | The phenomenon of pdms crystallization above - 120 ? disappears when methylphenylsiloxane is introduced to polydimethylsiloxane , where the segments are freed , tan 5 is raised and the tg even can be broadened to - 115 ? 聚二甲基硅氧烷在低温下的结晶,使其大部分链段的松弛受到阻碍,是pdms阻尼性能不高的主要原因。 |
| 4. | Besides , the paper further touched the research on the relationship of crystallization - melting , transitionrelaxati - on and compatibility with damping properties of polysiloxane / polyacrylate complex damping materials 对聚二甲基硅氧烷聚丙烯酸酯复合阻尼材料的结晶与熔融,转变与松弛,以及相容性与阻尼性能关系进行了研究讨论。 |
| 5. | Latterly , it coupled with ultraviolet absorption spectroscopy ( uvas ) , capillary electrophoresis ( ce ) and other apparatuses . up to date , many experimental coatings were prepared and investigated for a wide range of applications 纤维涂层是spme的核心部位,常用的涂层材料多为液相聚合物,如聚二甲基硅氧烷( pdms ) 、聚丙烯酸酯( pa )等。 |
| 6. | Discussed conditions and factors of synthesis of the polydimethylsiloxane - phenylsilsesquioxane with pdms and ptms . analyzed the character of the polydimethylsiloxane - phenylsilsesquioxane with ir 、 1h - nmr 摘要探讨了用羟基硅油( pdms )和苯基三甲氧基硅烷( ptms )合成聚二甲基硅氧烷梯形苯基倍半硅氧烷共聚物的反应条件,通过ir 、 1h - nmr确定了目标产物的结构。 |
| 7. | Abstract : under the condition of using the polydimethylsiloxane as adhesive , a new ignitio n composition and its column preparation are studied ; analyses and tests have be en made to the effect of powder performance and quality , and thus the key technol ogy is solved 文摘:研究了以聚二甲基硅氧烷为粘合剂和可燃剂的新型点火药配方及其药柱的制备工艺;对影响药剂性能、质量的因素进行了分析试验,解决了成形工艺中的技术关键。 |
| 8. | In this paper , interpenetrating polymer networks ( ipn ) based on polysiloxane ( pdms ) and poly ( methyl acrylate ) ( pma ) were prepared by using ma monomer and two types of pdms , which viscosities were 3300pa s and 7000pa s respectively . pdms was crosslmked by tetraethyl orthosilicate 本论文制备了聚二甲基硅氧烷与聚丙烯酸甲酯的序列半互穿聚合物网络,其中聚硅氧烷为交联结构,采用粘度分别为3300pa ? s和7000pa ? s两个品种,聚丙烯酸甲酯为线性聚合物。 |
| 9. | The research on the effect of liquid - liquid transition of polyacrylate on crystallization - melting of pdms indicates that above the melting temperature of pdms , pdms is reinforced by a special mutual action between p - electron in carbonyl of polyacrylate and 3d orbit in si atom of pdms , while below the temperature , the pdms crystal is lessened , which can not completely remove the crystal of pdms . however , it is the crystallization behavior of pdms that results in its most segments relaxation being restrained 研究聚丙烯酸酯液一液转变对聚二甲基硅氧烷结晶一熔融影响的结果表明:碳基碳原子上p电子与出原于中3d轨道相互作用,在聚h甲基硅氧烷熔融转变温度以上,对其有分子增强作用;在聚二甲基硅氧烷熔融转变温度以下,霎对其有降低结晶度的作用,但不能消除结晶现象。 |