稀有金属材料与工程, 2004, 33(12): 1358-1361.
掺杂纳米CeO2的纳米玻璃的制备
王进贤 1, , 董相廷 2, , 闫景辉 3, {"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"微型锥形双螺杆挤出机(MCTSE)越来越多地应用于新型聚合物纳米复合材料的制备,但对其共混过程的理论研究相对较少.文中首先数值模拟MCTSE挤出聚丙烯(PP)熔体的过程,考察了加工参数和螺杆构型对MCTSE输送能力和沿着轴向平均压力分布的影响.研究表明,螺杆转速和螺距的增加均有利于提高熔体输送能力,沿着螺杆挤出方向,平均压力是先增加后减小.由求解得到速度场的时间积分获得粒子从入口到出口的运动轨迹,统计结果表明, MCTSE的螺杆结构有利于改变剪切或拉伸流动形态,螺杆转速更有利于调控停留时间分布(RTD).文中采用的数值模拟方法可以点对点分析MCTSE内高聚物熔体沿着轴向流动的分散、分布和轴向混合特征.","authors":[{"authorName":"徐俊杰","id":"8b919a87-d5ba-4f4c-b7cc-0d2b274541f0","originalAuthorName":"徐俊杰"},{"authorName":"张先明","id":"3c8e87ae-c396-41b6-9aab-b11829e89995","originalAuthorName":"张先明"},{"authorName":"陈文兴","id":"82685cb2-2280-4e51-8789-4a4b63da45aa","originalAuthorName":"陈文兴"},{"authorName":"冯连芳","id":"ff2d592b-8184-44e1-ae98-512ac0b44fd5","originalAuthorName":"冯连芳"}],"doi":"","fpage":"128","id":"898bb0f5-1a7e-4d27-bebd-5924a9fc90f0","issue":"3","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"1a04417e-cc44-4054-bdb5-74deabc9677c","keyword":"微型锥形双螺杆挤出机","originalKeyword":"微型锥形双螺杆挤出机"},{"id":"9780e857-fb25-4288-81b6-6404cf401ab0","keyword":"混合指数","originalKeyword":"混合指数"},{"id":"28fc478c-9e13-47bf-80bf-c3dfa7944516","keyword":"停留时间分布","originalKeyword":"停留时间分布"}],"language":"zh","publisherId":"gfzclkxygc201503025","title":"微型锥形双螺杆挤出机混合性能的数值模拟","volume":"31","year":"2015"},{"abstractinfo":"某双螺杆挤出机的螺杆在运行过程中发生早期断裂,通过断口的宏观观察和扫描电镜观察、化学成分分析、显微组织观察、力学性能测试和有限元模拟,找出了螺杆轴断裂失效的原因.结果表明:螺杆轴发生了扭转疲劳断裂,裂纹起源于齿根,且有多个疲劳源;芯轴的花键齿根部是螺杆轴应力集中的部位;热处理工艺欠佳导致材料内部微孔聚集、组织不均匀,这些因素最终致使螺杆轴发生早期疲劳断裂.","authors":[{"authorName":"马小明","id":"06b43d2a-e934-4eb1-bd79-378db6e00cf5","originalAuthorName":"马小明"},{"authorName":"周阳","id":"0bbbfb37-6274-4d71-912b-288599107dec","originalAuthorName":"周阳"}],"doi":"10.11973/jxgccl201703022","fpage":"107","id":"5a184be3-313a-45d8-972b-d5cbd63f75cf","issue":"3","journal":{"abbrevTitle":"JXGCCL","coverImgSrc":"journal/img/cover/JXGCCL.jpg","id":"45","issnPpub":"1000-3738","publisherId":"JXGCCL","title":"机械工程材料"},"keywords":[{"id":"1399c09a-01d8-4d40-b93e-2421257ccce6","keyword":"双螺杆挤出机","originalKeyword":"双螺杆挤出机"},{"id":"f2866573-84c7-4983-b7c7-f43d8f16efc3","keyword":"疲劳断裂","originalKeyword":"疲劳断裂"},{"id":"75c79925-f147-4fa7-9a44-0b47fe7930ea","keyword":"高速旋转","originalKeyword":"高速旋转"},{"id":"cc51c530-f52e-49b8-9aa8-4fafb4fed13b","keyword":"应力集中","originalKeyword":"应力集中"}],"language":"zh","publisherId":"jxgccl201703023","title":"高速双螺杆挤出机螺杆轴断裂失效分析","volume":"41","year":"2017"},{"abstractinfo":"为研究同向啮合双螺杆挤出机螺纹元件组合解聚混合性能,文中采用POLYFLOW对双螺杆螺纹元件组三维等温模型进行有限元模拟,建立了描述螺纹元件组解聚能力与解聚效果的分散混合数学模型,并通过混合实验对该模型进行了验证.结果表明,平均解聚功能很好地量化螺纹元件组对共混物中附聚体颗粒的解聚效果,本文所建立的分散混合模型能直接描述混炼流场中螺纹元件组合数量和共混物中颗粒解聚效果之间的关系.","authors":[{"authorName":"林桦","id":"6b9d9fa3-82f9-4a1f-ae55-8f6fb7630ac3","originalAuthorName":"林桦"},{"authorName":"吴桐","id":"0e91f6dd-e0fd-4d68-b6ca-5bef301e0b03","originalAuthorName":"吴桐"},{"authorName":"夏平","id":"7ff22074-5eac-497c-aa93-a797728ee06d","originalAuthorName":"夏平"},{"authorName":"李果","id":"d6d98820-4b09-474a-8fa3-52592601ef6b","originalAuthorName":"李果"},{"authorName":"谢林生","id":"ddf41a1f-bddb-4a0f-a7e6-1b7891264fb2","originalAuthorName":"谢林生"},{"authorName":"马玉录","id":"78a9da70-b064-4a89-868b-065ecb18d04e","originalAuthorName":"马玉录"}],"doi":"","fpage":"87","id":"05984b9f-7b89-476a-a453-892cc256404f","issue":"5","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"8ff049e0-6163-492f-a7f7-14c2d91bdf1c","keyword":"螺纹元件组合","originalKeyword":"螺纹元件组合"},{"id":"0631a79b-dac8-4215-9f27-1fc739f31ec9","keyword":"分散混合模型","originalKeyword":"分散混合模型"},{"id":"55829149-b680-444e-bce7-924d8198412b","keyword":"平均解聚功","originalKeyword":"平均解聚功"},{"id":"a0ae00c8-20d1-4986-a0b7-7eff240c3578","keyword":"POLYFLOW模拟","originalKeyword":"POLYFLOW模拟"}],"language":"zh","publisherId":"gfzclkxygc201505016","title":"双螺杆挤出机螺纹元件组解聚混合性能的建模及实验表征","volume":"31","year":"2015"},{"abstractinfo":"聚甲醛(POM)和热塑性聚氨酯弹性体(TPU)于不同温度下在双螺杆挤出机中共混,用扫描电镜(SEM)考察了共混试样的相形态,并对试样分散相粒径进行了统计,研究了分散相粒径随加工温度的变化.发现摩擦剪切机理可以很好地解释双螺杆挤出机共混中TPU分散相粒径的形成过程,利用该机理可有效控制POM/TPU共混物相形态,得到了比母料法还好的共混效果,进一步提高了POM/TPU体系的冲击性能.","authors":[{"authorName":"程振刚","id":"13203bfd-3981-475e-b856-08e6e3a61dcf","originalAuthorName":"程振刚"},{"authorName":"王琪","id":"2d246830-67d1-4230-be61-13b82c5fdeb6","originalAuthorName":"王琪"}],"doi":"","fpage":"201","id":"ed95841f-8437-4434-ae34-bf8390399180","issue":"5","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"def7f217-326b-489d-8d1e-f0e1eb94708d","keyword":"聚甲醛","originalKeyword":"聚甲醛"},{"id":"03fc20ab-b05b-4645-be6d-c3ba55d216ce","keyword":"热塑性聚氨酯弹性体","originalKeyword":"热塑性聚氨酯弹性体"},{"id":"2fd9434c-fe7b-4a6f-8fab-5ef403323cf1","keyword":"相形态","originalKeyword":"相形态"},{"id":"00678d2e-09fa-45bb-96d3-6bd71ac6bdd3","keyword":"摩擦剪切机理","originalKeyword":"摩擦剪切机理"}],"language":"zh","publisherId":"gfzclkxygc200605051","title":"聚甲醛/热塑性聚氨酯弹性体在双螺杆挤出机共混中相形态的形成机理","volume":"22","year":"2006"},{"abstractinfo":"在聚合反应挤出过程中,化学热效应显著影响材料体系温度,从而影响反应速率以及高分子材料结构与流变性能.采用有限体积方法,数值分析了甲基丙烯酸正丁酯在异向旋转双螺杆挤出机内的自由基聚合反应热效应,描述了反应热释放量及其强度在挤出机内的变化特点,分析了其影响因素,为反应加工条件的优化设计提供了理论依据.","authors":[{"authorName":"贾玉玺","id":"28cf2925-120f-499b-992b-b658b9140ac1","originalAuthorName":"贾玉玺"},{"authorName":"孙雪梅","id":"24cb1e8e-de26-4891-8eef-1cd2c0c5b6d9","originalAuthorName":"孙雪梅"},{"authorName":"张国芳","id":"fb67bc6b-88d9-4e2e-a81e-cdb308d717b6","originalAuthorName":"张国芳"},{"authorName":"孙胜","id":"98c9c235-b1ed-465b-be41-ff7d98b0e177","originalAuthorName":"孙胜"}],"doi":"","fpage":"28","id":"64020260-c2f2-42c1-a5ff-b3d6408f7f78","issue":"3","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"8258cda3-c065-458f-a42b-dfa82ae67009","keyword":"反应挤出","originalKeyword":"反应挤出"},{"id":"0758d93a-cf5e-4930-b80b-c562eccba499","keyword":"自由基聚合","originalKeyword":"自由基聚合"},{"id":"695c2b01-79eb-41db-a8c2-dac6aec19f2b","keyword":"化学热效应","originalKeyword":"化学热效应"},{"id":"1238c2db-c654-4330-8276-3fea0f7631ec","keyword":"数值模拟","originalKeyword":"数值模拟"}],"language":"zh","publisherId":"gfzclkxygc200803007","title":"异向旋转双螺杆挤出机内的自由基聚合反应热效应","volume":"24","year":"2008"},{"abstractinfo":"利用计算机流体力学的方法对聚合物熔体在三螺杆挤出机中的流动规律进行了数值模拟,分析了物料在三螺杆中心区的流动和混合情况.通过速度和压力分布,计算了三螺杆挤出机的螺杆挤出特性参数,并和双螺杆挤出机进行对比分析.结果表明,由于中心区环流的存在,延长了物料在三螺杆挤出机的停留时间分布.三螺杆挤出机在分布性混合、分散性混合、能耗等方面均好于双螺杆挤出机,而产能比又为双螺杆挤出机的1.3倍.三螺杆挤出机具有较好的工程应用前景.","authors":[{"authorName":"朱向哲","id":"a5bd383f-e469-4542-a0c6-e7995ae884aa","originalAuthorName":"朱向哲"},{"authorName":"袁惠群","id":"b14a8cb7-401d-4462-9763-73fe4b114f69","originalAuthorName":"袁惠群"}],"doi":"","fpage":"32","id":"6dfb883e-a3c9-41d5-b182-9ae050d99e1a","issue":"3","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"5cdfd8c0-e67c-43c5-9bf7-53e74e31fc1a","keyword":"三螺杆挤出机","originalKeyword":"三螺杆挤出机"},{"id":"dda69607-24f3-4cc7-a212-5fcd01a31fc3","keyword":"挤出特性","originalKeyword":"挤出特性"},{"id":"be4e8596-3fbe-4185-ba62-c8220b408e4f","keyword":"环流","originalKeyword":"环流"},{"id":"0b27f6dd-ba6f-4f08-ba33-9729b4312ceb","keyword":"聚合物","originalKeyword":"聚合物"},{"id":"96ab719e-5150-4140-be3a-3d39dc7f6753","keyword":"数值模拟","originalKeyword":"数值模拟"}],"language":"zh","publisherId":"gfzclkxygc200803008","title":"三螺杆挤出机挤出特性的数值模拟","volume":"24","year":"2008"},{"abstractinfo":"以L-乳酸熔融缩聚法产物为预聚物,以亚磷酸三苯酯(TPPi)为扩链剂,在微型双螺杆挤出机(Haake MiniLab)中通过反应挤出法制备了高分子量聚L-乳酸,挤出产物在微型注塑机中直接成型.研究了挤出温度,螺杆转速,停留时间及TPPi添加量对产物挤出过程中混合扭矩的影响,在最佳条件下所得产物(M-)w达126,000 g/mol,拉伸强度达64.6 MPa,断裂伸长率为4.5%.由1H-NMR证实反应挤出后其分子结构基本不变, DSC结果显示反应挤出后产物熔点为148.9 ℃,结晶度为33.9%.","authors":[{"authorName":"谢吉星","id":"c56a227f-80d8-4e64-9c8b-f25275dcac97","originalAuthorName":"谢吉星"},{"authorName":"杨荣杰","id":"fbebcfc8-762e-4d24-93f4-5ae8ca899998","originalAuthorName":"杨荣杰"}],"doi":"","fpage":"116","id":"ed5bf725-322d-4f79-b8d3-d981edebcdf7","issue":"9","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"147f77ca-62f9-4010-ac00-70480fe28fa1","keyword":"聚乳酸","originalKeyword":"聚乳酸"},{"id":"f0ab322f-5a23-42cb-beca-25f4adde3e5e","keyword":"反应挤出","originalKeyword":"反应挤出"},{"id":"730ce2e1-b536-441e-8de3-c38271c3829e","keyword":"扩链","originalKeyword":"扩链"},{"id":"c6b2ce8d-139b-4101-9d7d-d51789144b03","keyword":"亚磷酸三苯酯","originalKeyword":"亚磷酸三苯酯"}],"language":"zh","publisherId":"gfzclkxygc200809029","title":"聚乳酸在微型双螺杆中的挤出过程","volume":"24","year":"2008"},{"abstractinfo":"利用有限元法,采用三维非等温、非牛顿流体模型,对三角形排列三螺杆挤出机内聚合物的温度分布进行了数值模拟.在此基础上,考虑了粘性耗散生热的影响,计算了三角形排列三螺杆挤出机功耗特性,研究了螺杆转速、螺纹头数、压力差和挤出量等参数对三螺杆挤出机挤出功耗和功耗比的影响,并和\"一\"字型排列三螺杆挤出机和双螺杆挤出机进行了比较.结果表明,在相同的操作条件下,三角形排列三螺杆挤出机的混合性能和功耗比均好于\"一\"字型排列三螺杆挤出机和双螺杆挤出机.","authors":[{"authorName":"朱向哲","id":"6a859e3f-abd1-4a10-a8c4-34e0e1c5b1c5","originalAuthorName":"朱向哲"},{"authorName":"苗一","id":"e46b14c8-c64f-428d-8838-46b8955eab56","originalAuthorName":"苗一"},{"authorName":"袁惠群","id":"8e28d191-26a2-4e28-b039-5e15ee6b8953","originalAuthorName":"袁惠群"}],"doi":"","fpage":"166","id":"b7b565b2-bed8-4007-a34b-eca6e0d2be8f","issue":"10","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"ffd80db9-0b76-460d-a887-eb7b375993f3","keyword":"三角形排列三螺杆挤出机","originalKeyword":"三角形排列三螺杆挤出机"},{"id":"f68b6086-167e-4545-be3d-f3893bc3ba50","keyword":"非等温流动","originalKeyword":"非等温流动"},{"id":"18217650-f436-4574-8a89-a230e472faa2","keyword":"功耗","originalKeyword":"功耗"},{"id":"c8da7b4b-50ec-458c-b108-d3b72c0688c1","keyword":"数值模拟","originalKeyword":"数值模拟"}],"language":"zh","publisherId":"gfzclkxygc200910046","title":"三螺杆挤出机聚合物温度和功耗特性的数值模拟","volume":"25","year":"2009"},{"abstractinfo":"利用计算流体力学法(CFD),对聚合物熔体在四螺杆挤出机螺纹元件中的流动规律进行了数值模拟.利用计算所得的速度场和压力场,计算了四螺杆挤出特性,并和双螺杆、一字型排列和三角形排列的三螺杆挤出机进行了对比分析.结果表明,四螺杆的四个啮合区具有较大的压力和速度梯度,在中心区有明显的环流现象,延长了物料的停留时间分布,且中心区物料没有滞留现象.由于中心区的存在导致了四螺杆挤出机的建压能力较弱;但四螺杆挤出机在产量、分布性混合和分散性混合等方面好于双螺杆和三螺杆挤出机.","authors":[{"authorName":"朱向哲","id":"d2c853b6-bb22-4e7b-bb3f-9e44e3ec0a85","originalAuthorName":"朱向哲"},{"authorName":"袁惠群","id":"14f60c6b-a6a3-4334-9a91-86158bcc2280","originalAuthorName":"袁惠群"}],"doi":"","fpage":"14","id":"552f76e2-dae8-4db1-a923-b684215e1089","issue":"9","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"27a0dee4-cdbc-446d-9dce-88e834032f0d","keyword":"四螺杆挤出机","originalKeyword":"四螺杆挤出机"},{"id":"41221d03-7638-4612-8685-e5e8f8bd75fb","keyword":"中心区","originalKeyword":"中心区"},{"id":"e49e4773-794c-4eeb-a06b-d621e4cff074","keyword":"挤出特性","originalKeyword":"挤出特性"},{"id":"381841ed-8447-4ce2-a32b-f068319de2df","keyword":"计算机模拟","originalKeyword":"计算机模拟"},{"id":"996b55c8-625a-4ca3-a3c2-78fb40b9a1ff","keyword":"聚合物","originalKeyword":"聚合物"}],"language":"zh","publisherId":"gfzclkxygc200809004","title":"四螺杆挤出机中聚合物流动特性的计算机模拟","volume":"24","year":"2008"},{"abstractinfo":"同向非对称双螺杆挤出机作为新型加工设备,混合机理以及聚合物相形态变化是值得关注的重点.文中借助HDPE/PS共混体系,对同向非对称双螺杆挤出机螺槽充满程度以及螺杆输送机理做出简要分析,对挤出过程沿程混合相形态及分散相粒径统计分析表征.结果表明,同向非对称双螺杆挤出机中双头螺槽填充率高于单头,物料完全熔融后,粒径变化较小,而在同一径向长度,单头螺槽内分散相粒径略小于双头螺槽,并对这一现象进行了初步分析.","authors":[{"authorName":"喻慧文","id":"d0bdc06f-34dc-4b3f-8a52-0290513e09f5","originalAuthorName":"喻慧文"},{"authorName":"罗家胜","id":"8d49beaa-b1f7-4886-8779-eb164e99f554","originalAuthorName":"罗家胜"},{"authorName":"徐百平","id":"d3293688-483f-4a58-90cc-9d3ad963fa99","originalAuthorName":"徐百平"},{"authorName":"何亮","id":"3518ffe9-0ea4-4de7-a074-5e18dd33be5d","originalAuthorName":"何亮"},{"authorName":"王玫瑰","id":"cdb242c1-0edb-4c29-86f7-b4d4a7d55c0c","originalAuthorName":"王玫瑰"},{"authorName":"杜遥雪","id":"2c2960e0-ba7c-4b1e-9f94-2dc3d8fa7998","originalAuthorName":"杜遥雪"}],"doi":"","fpage":"113","id":"ea0605a8-e2c9-4069-9d0e-5baccff92916","issue":"8","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"55c0747e-95bc-4580-80be-3239231affbe","keyword":"同向非对称挤出机","originalKeyword":"同向非对称挤出机"},{"id":"881c6e96-52c3-4469-ac09-e2f5dd09a057","keyword":"充满度","originalKeyword":"充满度"},{"id":"d8923a67-435a-400e-a567-0206d0341e80","keyword":"混合相形态","originalKeyword":"混合相形态"},{"id":"e14c9c00-6437-4b20-ae13-4b1b670e08cc","keyword":"分散相粒径分布","originalKeyword":"分散相粒径分布"}],"language":"zh","publisherId":"gfzclkxygc201508021","title":"同向非对称双螺杆挤出HDPE/PS共混体系沿程混合表征","volume":"31","year":"2015"}],"totalpage":1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