| 1. | Testing of paraffin ; determination of needle penetration
石腊检验.针入法测定 |
| 2. | Determination of needle penetration of petroleum waxes
石油蜡针入度测定法 |
| 3. | Standard test method for needle penetration of petroleum waxes
石油蜡针入度的标准测试方法 |
| 4. | Needle penetration of petroleum waxes , method of test for 05 . 01 , 15 . 09
石油蜡的针入度试验方法 |
| 5. | Bitumen and bituminous binders - determination of needle penetration
沥青和沥青粘合剂.针入度的测定 |
| 6. | Petroleum products . determination of needle penetration of paraffins and waxes
石油产品.石蜡和蜡的针穿透度的测定 |
| 7. | Bitumen and bituminous binders - determination of needle penetration ; german version en 1426 : 1999
沥青和沥青粘合剂.针入度的测定 |
| 8. | Methods of tests for petroleum and its products - bitumen and bituminous binders - determination of needle penetration
石油及其制品的试验方法.沥青和沥青粘合剂.针头刺入度的测定 |
| 9. | Alkaline zinc - manganese battery is widely used all over the world it has good performance of storage ， low cost ， stable discharge and convenience of carrying the sealing of the battery is a crucial factor to the performance of the battery due to the disadvantages of present sealants ， leakage of electrolyte often happens what ’ s more ， the sealing capability affects the performance of the battery the way to raise the sealing capability is to search for a good additive ， which can improve the sealing capability through adding according to chemical principles ， this article picks out ptfe and nylon66 as additive adding ptfe or nylon66 into the pitch can improve the sealing capability of the pitch at the same time ， the temperature ， the time ， the amount of addictive ， the way to drop temperature and the time of churning all should be considered by testing the constitutions ， softening point ， moving degree and length of needle of various pitch samples ， we can compare the properties of different sealants can be studied by using of x - ray , the constitutions of the pitch can be indicated which can help us to explain these changes this article includes ： testing the constitutions ， soften point ， moving viscosity and needle penetration of various pitches ； raising the sealing capability by adding ptfe nylon66 into the pitches ； testing the constitutions ， soften point ， moving viscosity and needle penetration of raised samples ； analyzing and discussing the basic principles of this method it is showed that soften point ， moving viscosity and needle penetration of pitches are increased by adding ptfe nylon66 and the discharge time ， initial voltage ， capacity of battery with pitch raised by nylon66 are good and get to the requirement of gb t7 1 1 2 in a11 the method proposed in this article is available in practical industry use
通过测定改进沥青的软化点、运动粘度和针入度等指标参数来比较不同的添加剂及不同的添加条件对沥青封口性能的影响。本论文的主要研究结果为：系统测试了多种沥青样品的组成、软化点、运动粘度、针入度；对市售沥青分别添加聚四氟乙烯乳液、有机硅树脂和尼龙66进行改进，制备了改进产品；对改进沥青的组成、软化点、运动粘度、针入度进行了测试和比较；使用改进沥青组装成电池并对电池进行恒电流放电测试、短路电流测试和电池漏气、漏液性能的测试；对沥青改进的原理进行了分析和讨论。实验结果表明：在沥青中添加尼龙66和聚四氟乙烯乳液对沥青的封口性能有明显的提高；通过对工艺条件的不断改进，目前的工艺条件已完全可以用于实际生产操作；以添加尼龙66改进的沥青为封口剂组装成的电池完全满足碱锰电池生产的需要，且电池电容量、短路电流等指标均达到gb t7112标准要求；本文提出的改进方案，通过验证是一种效果好、实用性强的方法。 |
