| N-羟甲基丙烯酰胺聚合体系注凝成型纳米氮化硅陶瓷 |
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| 引用本文： | 郭文利,徐廷献,燕青芝,葛昌纯.N-羟甲基丙烯酰胺聚合体系注凝成型纳米氮化硅陶瓷[J].硅酸盐学报,2006,34(2):147-151. |
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| 作者姓名： | 郭文利 徐廷献 燕青芝 葛昌纯 |
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| 作者单位： | 天津大学材料学院,国家教育部先进陶瓷与加工技术重点实验室,天津,300072;北京科技大学先进陶瓷与粉末冶金研究室,北京,100083;天津大学材料学院,国家教育部先进陶瓷与加工技术重点实验室,天津,300072;北京科技大学先进陶瓷与粉末冶金研究室,北京,100083 |
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| 摘 要： | 注凝成型工艺中通常使用的单体丙烯酰胺是一种神经毒素,它阻止了注凝成型工艺的进一步发展,为此,通过实验研究了一种廉价、低毒N-羟甲基丙烯酰胺单体注凝成型体系及该体系形成凝胶时的用量、温度、预混液的pH值等对凝胶时间和凝胶强度的影响.结果表明:N-羟甲基丙烯酰胺聚合体系在无交联剂时仍能形成凝胶;在固相体积分数为40%纳米氮化硅陶瓷粉体的料浆中仅需质量分数的3%的N-羟甲基丙烯酰胺单体即可通过注凝成型得到可用于机械加工的坯体,完全可以代替丙烯酰胺应用于注凝成型工艺中.
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| 关 键 词： | N-羟甲基丙烯酰胺 注凝成型 低毒 |
| 文章编号： | 0454-5648(2006)02-147-05 |
| 收稿时间： | 06 16 2005 12:00AM |
| 修稿时间： | 10 17 2005 12:00AM |
GELCASTING OF SILICON NITRIDE CERAMICS WITH LOW-TOXICITY N-METHYLOL ACRYL AMIDE SYSTEM |
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| GUO Wenli,XU Tingxian,YAN Qingzhi,GE Changchun.GELCASTING OF SILICON NITRIDE CERAMICS WITH LOW-TOXICITY N-METHYLOL ACRYL AMIDE SYSTEM[J].Journal of The Chinese Ceramic Society,2006,34(2):147-151. |
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| Authors: | GUO Wenli XU Tingxian YAN Qingzhi GE Changchun |
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| Affiliation: | 1. Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072; 2. Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The process of gelcasting based on the acrylamide(AM) system is limited to some extent due to AM being a neurotoxin monomer.A low-toxicity gelcasting system based on N-methylol acrylamide(NMAM) was investigated.The effect of the content of monomers,gelcasting temperature and the pH values of pre-mixtures on idle time and gel strength of AM and the NMAM gelcasting systems were studied.The results indicate that gel is formed in the NMAM system without cross-linking (agent).3%(in mass) NMAM was used as monomer in the gelcasting of nanopowder Si_3N_(4)(40% in volume).Under the condition above,the homogeneous green body with machinable strength was obtained,which suggested that NMAM can substitute AM in the gelcasting process. |
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| Keywords: | N-methylol acrylamide gelcasting low-toxicity |
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