AC发泡剂
AC发泡剂的相关文献在1989年到2022年内共计120篇,主要集中在化学工业、工业经济、废物处理与综合利用
等领域,其中期刊论文90篇、会议论文4篇、专利文献623709篇;相关期刊49种,包括江苏氯碱、聚合物与助剂、精细化工经济与技术信息等;
相关会议4种,包括2015耐火材料综合学术年会暨第十三届全国不定形耐火材料学术会议、2015耐火原料学术交流会、第三届全国生物质材料科学与技术学术研讨会、第三届全国研究生生物质能研讨会等;AC发泡剂的相关文献由146位作者贡献,包括吕有余、徐光根、曹绍良等。
AC发泡剂—发文量
专利文献>
论文:623709篇
占比:99.98%
总计:623803篇
AC发泡剂
-研究学者
- 吕有余
- 徐光根
- 曹绍良
- 徐长河
- 刘琴
- 敖永平
- 汪国清
- 王寿发
- 祝金和
- 聂宗武
- 郑小辉
- 陈长章
- 雷连中
- 吴范宏
- 宋新民
- 张柳钦
- 张海清
- 水声霞
- 汪新泉
- 潘晓海
- 熊英
- 牛德良
- 瞿波
- 程文明
- 葛青
- 董开荣
- 薛式华
- 赵敏
- 邓东华
- 钱君律
- 陈保华
- 陈焕钦
- 陈祖敏
- 陈立军
- 任章启
- 侯宇峰
- 侯德发
- 侯贞棉
- 刘建
- 刘晓洋
- 刘朔
- 刘燕燕
- 刘逸僧
- 史兴余
- 吕华昌
- 吕友余
- 吴小云
- 吴琴芬
- 吴美珊
- 唐昊洋
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吕华昌
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摘要:
在AC发泡剂氧化反应中,提高原来工艺所规定的反应温度,并后续工序使用了冲击磨粉碎技术,生产出满足客户要求的AC发泡剂,本文介绍了AC发泡剂氧化反应时的温度的选择和冲击磨粉碎系统的工艺流程和设备的工作原理,以及使用过程中对系统参数进行优化.
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王立梅
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摘要:
介绍了一起AC发泡剂生产过程引发的火灾事故,通过查阅和借鉴各类文献、实验数据,深刻剖析了AC发泡剂在添加配料后性能尤其是分解温度的变化,依靠现场痕迹和理论数据,准确认定了起火原因,并通过事故调查,提出科学的安全操作规程.
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王野;
吴小云;
尹晓刚;
龚维;
陈卓
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摘要:
Intercalating azodicarbonamide (AC foaming agent) to montmorillonite (MMT) layers using different reaction me-diums (water/dimethyl sulfoxide,supercritical carbon dioxide) can improve MMT reunion phenomenon and reduce decomposition temperature. The effects of the reaction mediums on the amount and decomposition temperature of intercalated AC foaming agent and MMT morphology were investigated by FTIR,SEM and TG. As experimental results show,AC/MMT composite foaming agent were successfully prepared in both two mediums. Supercritical carbon dioxide as the reaction medium can increase the amount of AC foaming agent intercalation of Na-montmorillonite (Na-MMT) to 14.34%. Water/dimethyl sulfoxide as the medium is more conducive to reduce AC foaming agent decomposition temperature in Na-MMT,AC foaming agent decomposition temperature de-creases from 226°C to 173.21°C. Both reactions media are able to improve the structure of MMT agglomeration structure and super-critical carbon dioxide as medium can make MMT's structure become morefluffy and disordered. AC/MMT composite foaming agent is used to obtain the good effect in polypropylene foaming material.%分别以水/二甲基亚砜(H2O/DMSO)、超临界二氧化碳为介质,将偶氮二甲酰胺(AC发泡剂)插层到蒙脱土(MMT)层间,制备得到AC/MMT复合发泡剂.通过红外光谱、热失重、X射线粉末衍射、扫描电子显微镜等方法对产品进行表征,考察反应介质对AC/MMT复合发泡剂中AC发泡剂插层量、AC发泡剂分解温度以及MMT形貌的影响.研究表明,两种介质均能成功制备得到AC/MMT复合发泡剂,以超临界二氧化碳为介质时钠基蒙脱土(Na-MMT)中AC发泡剂插层量最大,为14.34%;Na-MMT中AC发泡剂的分解温度主要受反应介质的影响且以H2O/DMSO为介质时AC发泡剂的集中分解温度由226°C降低至173.21°C;两种反应介质均能够改善MMT的团聚结构,以超临界二氧化碳为介质时更能够使得MMT结构变得蓬松、无序.应用于聚丙烯发泡材料中效果良好.
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王晓梅;
马寒冰;
刘建;
侯德发
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摘要:
通过使用不同的化学发泡剂与聚四氟乙烯( PTFE)共混,经冷压烧结制备了发泡PTFE复合材料,采用剪切强度、扫描电镜( SEM)表征了复合材料的黏结性能,用热重分析手段表征了发泡剂与复合材料的热性能。结果表明:使用型号CCR20A偶氮二甲酰胺发泡剂所制备的发泡PTFE复合材料表面泡孔分布均匀、黏结性能最为理想,且添加量为20%(质量分数)时复合材料表面被黏结能力最强,剪切强度值为3.879 MPa,相对于纯 PTFE 提高了78.16%;发泡剂在复合材料中分解且对复合材料热稳定性影响较小。%The method of blending different chemical foaming agents and polytetrafluoroethylene( PTFE ) together was employed in this paper. And the foamed PTFE composite was prepared by the process of cold pressing and sintering. Then the bonding ability,surface morphology and thermal stability of the compos-ites were characterized by shear strength,Scanning Electron Microscopy( SEM)and Thermogravimetric Analysis( TGA). The results shows that the shear strength of foamed PTFE composite achieves the best effects and the strongest bonded surface when adding the type CCR20A of azodicarbonamide. Its shear strength value can be reached 3. 879 Mpa while adding 20%( weight percent ),which increased by 78. 16% compared with the shear strength of pure PTFE;in addition,foaming agents decomposed in the composite material,and had less effect of on the thermal stability of the composite material.
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陈义祥;
杨建辉;
蒋志君;
林志明;
李江涛
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摘要:
以硅粉和Si3N4粉体为反应剂,偶氮二甲酰胺(AC发泡剂)为添加剂,利用燃烧合成技术在较低氮气压力下制备了高α相含量的Si3N4粉体.采用X射线衍射和扫描电镜分别对产物的物相组成及显微结构进行了表征,研究了AC发泡剂对α相Si3N4粉体的形成和产物颗粒形貌的影响.结果表明,AC发泡剂能促进硅粉快速氮化,产物中α-Si3N4的含量随着AC发泡剂添加量的增加而增加.当AC发泡剂的添加量为24wt%时,产物中α-Si3N4的含量高达85.2wt%.对AC发泡剂作用下的燃烧合成Si3N4的反应机理做了初步探讨,研究表明:AC发泡剂的分解产物N2、CO、NH3不仅增加了坯体的透气性,而且改变了燃烧反应的传热和传质路线,从而促进了硅粉快速氮化和α-Si3N4粉体的生成.%Combustion synthesis (CS) of high content of a-Si3N4 powders was canied out using Si and Si3N4 powders as reactants with the addition of diazenedicaiboxamide (AC) at a relatively low N2 pressure of 3 Mpa. The phase compositions and microstructure of products were characterized by XRD and SEM. Effects of AC contents on the phase compositions and Si3N4 particles morphology were studied. In addition, the reaction mechanisms were discussed. The results indicated that the additive AC promoted the nitridation of Si. The a-Si3N4 contents in the combustion-synthesized products showed great dependence on the contents of AC added in the reactants, which reached 85.2wt% adding with 24wt% AC. Meanwhile, impurities such as SiC, Si2N2O could be found in the final products when more than 12wt% AC agent was added. Poor dispersibility of Si3N4 particles would be more serious with increasing AC contents in the reactants. N2, CO and NH3 produced by decomposition of AC leaded to a change of compact porosity, thermal convection and mass transfer processes, which was responsible for the increasing contents of a-Si3N4 and the discrepancy morphology of the products.