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1)  plaster,model
石膏模型,石膏原型
2)  modle gypsum
模型石膏
1.
The present paper delt with the influence of several additives such as water reducing agent of N and colloidal silica on the performances including setting time and strength and absorption rate and attack rate of modle gypsum,.
研究了N型减水剂、硅溶胶等添加剂对模型石膏凝结时间、强度、吸水率、溶蚀率等性能的影响,并确定了有关性能与添加量之间的关系,得出了最佳添加量。
3)  plaster cast
石膏模型
1.
After correction,all the patterns were evaluated,so the best pattern was chosen and compared with the plaster cast and the relationship could be found.
为更加准确地定量分析旗袍空间省量分配和侧缝线的形态关系,以旗袍基本纸样为基础变化出5种不同的省量分配方案的纸样,制作成样衣并修正;对5种纸样进行了综合评价,将具有最好效果的纸样和石膏模型展开图覆合,分析了省量分配与侧缝形态的关系。
4)  plaster mould
石膏模型
1.
The article analyzed the factors affecting the working life of plaster mould during the period from preparation to application and emphasized the importance of extending the working life.
本文分析了卫生瓷石膏模型从制作到使用影响其使用寿命的各相关因素,强调了延长其使用寿命的重要性,相信对同行企业有一定的借鉴和指导作用。
2.
This paper deals with the effect of adding polyvinyl alcohol (PVA),polyvinyl formal (PVA) and methyl cellulose (MC) on the performance of plaster mould.
研究了分别以聚乙烯醇 (PVA )、聚乙烯醇缩甲醛 (PVF)和甲基纤维素 (MC)为添加剂对石膏模型性能的影响。
5)  plaster mold
石膏模型
1.
Utilizing the polymerization of organic materials and decomposition of inorganic materials,a high strength, wearable and porous thin coating on the working surface of plaster mold was formed, whichreduced the defects of roller forming and prolonged the service life of the mold.
利用有机物的聚合反应和无机物的低温分解反应,在石膏模型的工作表面形成高强、高耐磨、多孔的薄层,可减少滚压成形缺陷并提高模型使用寿命。
6)  plaster model
石膏模型
1.
Objective To study the influence of differnt disinfection methods on the disinfectant effect and accuracy for the plaster model of denture.
目的研究多种消毒方法对义齿石膏模型的消毒效果及尺寸精度的影响。
补充资料:模型石膏
分子式:
CAS号:

性质:制造模型用的半水石膏。天然石膏(CaSO4·2H2O)经粉碎、炒制,使其脱去1.5个结晶水后得到半水石膏(CaSO4·1/2H2O)。炒制前的石膏一般要过80~120目筛。炒制温度控制在150~200℃为宜。炒制石膏温度不易稳定,所炒制的石膏中除β型半水石膏外,还含有少量二水石膏及无水石膏(又称死烧石膏),后两者不易水化。需经1~2d陈化,使他们向半水石膏转化,同时也可避免新炒制的石膏水化过剧,影响石膏模质量。

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