共查询到19条相似文献,搜索用时 62 毫秒
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采用活性聚醚X-09对氨基硅油进行改性,对原料比、氨基硅油的氨值、溶剂的选择及用量、反应温度及反应时间对反应的影响进行了研究,得到了适宜的合成条件,该合成工艺简单,制得产品质量好. 相似文献
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两步缩聚合成特殊改性氨基硅油的生产工艺及应用 总被引:1,自引:0,他引:1
选用线性体KF9701(日本信越)与倜联剂103(国产)经催化合成线性体氨基硅油,并利用嵌段入特殊链节蘑口以改性使用时将其配成微乳液,经该微乳液整理的织物,手感特别柔软、滑糯。 相似文献
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MEE对高粘度氨基硅油微乳化性能的研究 总被引:1,自引:0,他引:1
以高粘度氨基硅油为原料,选用脂肪酸甲酯乙氧基化物MEE-8和MEE-5两种非离子表面活性剂为复合乳化剂,正戊醇为助乳化剂,成功地制备了粒径小于50 nm的氨基硅油微乳液(固含量20%).讨论了各种因素对氨基硅油微乳液形成的影响,优化的条件为:乳化剂[m(MEE-8):m(MEE-5)=4∶1]用量42%(对氨基硅油质量),正戊醇用量7%(对氨基硅油质量),pH值为5.5~6.0.此氯基硅油微乳液能较好地改善织物的柔软性,且在应用过程中性能保持稳定. 相似文献
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氨基硅油整理织物的色变及解决方法 总被引:5,自引:0,他引:5
大部分氨基硅油整理织物后的色变,与氨值的高低、乳化剂种类及整理时的工艺条件密切相关。通过分析,认为部分分散染料在氨基硅油整理时热迁移而使色光变化复杂,提出了选择使用氨基硅油整理剂的基本原则,以选择氨值为0.1~0.3的氨基硅油为佳;研制了硅油活化剂AT以降低色变,经试验验证,其用量为0.1%~0.6%时效果较好。 相似文献
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不黄变线性氨基硅油的合成及应用 总被引:3,自引:0,他引:3
低摩尔质量、窄分布的端羟基硅油(线性体)与环己氨基硅烷偶联剂反应,合成了不黄变线性氨基硅油.乳化后的微乳液稳定性好,具有极好的白度及柔软、滑爽性. 相似文献
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采用加速溶剂和索氏提取法提取刺山柑种子中油脂,经酯化后,以气相色谱-质谱联用技术鉴定出刺山柑种子中的脂肪酸。采用835-50型氨基酸自动分析仪测定了刺山柑果实、花蕾和叶子中氨基酸的含量。结果:刺山柑种子油含有7种脂肪酸,其中不饱和脂肪酸总量占93.91%,主要成分亚油酸占66.1%。刺山柑果实、花蕾和叶子中均含有18种常见氨基酸,包括人体必需的7种氨基酸,其总含量分别为16.91%、10.14%、17.88%。结论:刺山柑种油富含不饱和脂肪酸油酸,地上部分氨基酸含量丰富,具有较高的营养价值。 相似文献
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以水溶性聚乙烯醇(PVA)纤维为试验材料,研究其纵向和横截面结构形态,分析结构与性能之间的关系,测定了水溶性聚乙烯醇纤维耐酸碱性、回潮率和溶解度等基本性能。通过对水溶性聚乙烯醇结构、性能的探索与研究,为水溶性聚乙烯醇纤维的开发利用奠定了一定的理论基础,为新型纺织面料的研究开发提供了新的原料。 相似文献
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Cold water extract (CWE), cold water soluble protein (CWS-protein), CWS-protein modification and free alpha amino nitrogen (FAN) were determined for three improved Nigerian sorghum cultivars malted under four different steep conditions. The levels of these variables in the sorghum malts differed significantly when malted under identical steep regimes. This indicates that soluble protein accumulation and modification in these grains are cultivar dependent. Grains exposed to a combination of air rest cycles and final warm steeping gave highest values of cold water solubles, CWS-protein modification and FAN. Amylolytic activity was enhanced over the rate of proteolysis when grains were steeped under regimes incorporating final warm steep. Cultivar SK 5912 with highest soluble protein solubilisation activity showed lowest FAN accumulation under all steep regimes suggesting roles for factors other than proteolysis in FAN accumulation. 相似文献
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Different time and temperature programmes were used to evaluate the production of hot water extract (HWE) and free amino nitrogen (FAN) from mashes containing raw sorghum and either malted sorghum or malted barley in the presence of microbial enzymes. Two malted varieties of sorghum (SK 5912 and Zaria) were used. The former gave higher HWE but lower FAN than the latter. Sorghum malts were unable to provide enzyme activity for starch extraction and exogenous enzymes were always needed. Seventeen commercially available enzyme preparations were assessed. A double-mash process was developed. Inclusion of calcium ions (200 ppm) was beneficial but adjustment of mash pH had little effect. Raw sorghum was gelatinised at 100°C for 30–40 min in the presence of a heat-stable α-amylase followed by mixing with a malt mash (started at B0°C) to give a temperature of 65°C with a total mash time of 167 min (127 min from mixing the mashes). The inclusion of a single commercial enzyme preparation (containing both proteolytic and amylolytic activities) was sufficient to achieve satisfactory HWE and FAN. Addition of different activities or combinations of activities gave no significant advantages. To obtain levels of FAN of 100–140 mg/l however excessive amounts of enzymes were required. 相似文献