原子吸收光谱法快速测定松香皂中几种金属元素

提出了用原子吸收光谱法快速测定松香皂中几种金属元素的方法。考察了元素干扰情况及灰化温度。该方法快速、简便、准确 ,RSD为 0 .95 %～ 2 .2 1% ,回收率为 95 .6 %～ 10 8.7%。     

Ni/Al2O3-MxOy催化剂催化松香加氢的催化性能及产物组成

研究了Ni/Al2O3-MxOy,催化剂催化松香氢化反应的催化性能,结果表明Ni/Al2O3-MxOy催化剂催化松香氢化具有较好的催化性能,枞酸转化率可达98%以上,氢化产物达到国家普通氢化松香(特级)标准.产物主要组分与Pd/C催化剂催化所得的氢化产物基本相同.     

Heat Treatment and Chemical Composition of Fatty Acids and Rosin Acids Mixtures: Effects on Their Thermal Properties and Morphology

Mixtures of fatty acids and rosin acids are industrially important products utilized as a raw material for several purposes. Their thermal properties, especially cold stability and crystallization behavior is also important. Several fatty acid and rosin acid mixtures both from industrial products and from commercially available fatty and rosin acids were prepared and treated for 30 min at 80 °C under an inert atmosphere. Thereafter, the mixture was cooled to the desired temperature. Determination of the cloud point, chemical analysis of liquid and solid phase, thermal analysis by differential scanning calorimetry as well as morphology analysis by scanning electron microscopy were performed. The results revealed that crystallization was more rapid when it occurred at 10 °C compared to 25 °C. The crystal sizes increased with decreasing the crystallization temperature. Furthermore, crystals were of irregular shape and agglomerated when rapid cooling of the mixture occurred. Chemical analysis revealed that liquid phase was enriched with stearic acid, whereas crystals contained large amounts of abietic, dehydroabietic and linoleic acids. The cloud point of the mixtures increased with increasing amount of stearic and rosin acids. Dehydroabietic acid addition improved the cold stability of the synthetic fatty acid–rosin acids mixture.     

新型阳离子松香胶应用实践

新型阳离子松香胶具有良好的施胶效果,同时具有良好的增强和助留助滤效果。选择合适的添加地点,控制适当的添加条件对施胶效果影响较大。在满足施胶要求的前提下,施胶成本降低40元/吨纸,纸张的耐折度提高41.2%,纸张灰分含量提高1.3%～1.9%。     

油墨用松香改性酚醛树脂

文章阐述了松香改性酚醛树脂的工艺，粘度，正庚烷容纳度之间的关系，以及树脂配方，烷基酚的选择，改性的方法，工艺参数对性能的影响。     

智能式松香定量灌装仪

“智能式松香定量灌装仪”除了能显示松香的重外,还可自动切换拖动装置,完成松香的自动定量灌装。这样,既可减轻工人的劳动强度,又可满足灌装精度。     

Zn^2＋类催化剂催化松香酯化反应

本文研究了Zn~(2+)类固体酸催化松香酯化反应的规律。探讨了温度、催化剂用量、制法对酯化反应的影响。改进了280℃下的反应。不同方法制备的氧化锌,其催化效率不尽相同。     

分散松香胶的制备与应用

叙述了分散松香胶的制备方法和应用，分析了该胶的经济效益。     

松香施胶剂的中性化研究现状及发展趋势

综述分散松香胶在中性条件下施胶中松香改性、松香乳化剂、松香助留剂的制备和选择。着重介绍高分子松香乳化剂、高分子助留剂     

天然松香改性苯丙乳液的制备及其性能研究

以苯乙烯(St)、甲基丙烯酸甲酯(MMA)、丙烯酸-2-乙基己酯(2-EHA)、丙烯酸-2-羟基乙酯(HEA)和丙烯酸(AA)为反应单体,利用天然松香乳液作为改性剂,通过乳液聚合的方式制备了松香-苯丙复合乳液。研究了乳化剂用量、引发剂用量、松香乳液用量和单体配比对乳液性能的影响。并通过TGA、DLS、TEM对所制备的复合乳液进行了表征。结果表明:当乳化剂用量为单体质量的5%、引发剂用量为单体质量的0.8%、松香乳液用量为单体质量的30%、m(硬单体)∶m(软单体)=2.5∶1时,制得的乳液呈白色泛蓝光,粒径为131 nm。成膜后,漆膜光滑透明,硬度(1H)、耐水性(接触角97.05°)和附着力(1级)等性能良好。