材料

Since its estalishment.the company has always upheld the busness idea"Quality First、Outstanding Keeping Credit,Customer Supreme"The main products link four-column pressure forming machine series,flat vulcanizing machineseries.sheet stretcher series,rubber-plastic foamingmachine series,and pressure forming machine series for friction materials are widly applied to pressure processing the formable materials,rubber products.and forming the themoset materials,etc.

企业自创办以来，始终遵循&质量第一、追求卓越、尊信守约、客户至上&的经营方针；经多年创新与不懈努力，具体产品有：四柱压力成型机系列、平板硫化机系列、薄板拉伸机系列、橡塑发泡成型机系列、摩擦材料压力成型机系列等；广泛适用于可塑性材料的压力加工、橡塑制品等熟固性材料的成形。

The biomechanical tests showed that two kinds of artificial bones had not significant difference on compressive strength and Young\'s modulus(P＞0.05),while the flexural strength of nano-nacre artificial bone was less than the control group(P＜0.05).3.The results of CCK-8 showed that the difference were not significant in each group,the proliferation of osteoblast reached the peak at the 5th day;7 days after being co-cultured,the total protein content of study group was higher than control group and blank group(P＜0.05),while the difference between control group and blank group was not significantP＞0.05The difference of alkaline phosphatase activities among three groups was not significant(P＞0.05The SEM view showed that osteoblast attached and grew well in two kinds of artificial bone.4.X-ray photography showed that two kinds of powder started to degrade in 2 weeks;this phenomenon became more appear in 4 weeks,nano-nacre powder degraded faster than micron-nacre powder,while the hole shadow was easy to be found;in 8 weeks,all the femoral holes recovered and returned to normal bone mineral density in all groups.Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone grew fastest around the bone defect area in study group,while most slowly in blank groupP＜0.05 SEM(scanning electron microscope observation showed that nano-nacre powder degraded more quickly.The same result can be found through the demineralized sections morphometric analysis,and both of the composite artificial bones made from those two kinds of nacre powder had the good connection with the adjacent tissue in rats body without apparent inflammatory response.5.X-ray photography showed that rabbit\'s bone defects healed faster in study group since NNAB implanted than in control group since MNAB implanted.At 24 weeks after operation,bone density in radial defects had nearly accessed to the normal area,while lower in control group,and turned up nonunion in blank group;The checking of BMD showed that results in study group were higher than those in control group at 8,16 and 24 week(P＜0.05), and the difference between the BMD values in study group at 24 week and those in blank group was not significant(P＞0.05).The gross specimens showed satisfactory histocompatibility both in study group and in control group,with bone tissue growing from two sides into the center of implanted materials; Normal slices in HE stain and hard tissue grinding slices in Stevenel\'s blue/Van Geison\'s picro-fuchsin stain showed that the bone growth tendency was better in study group than that in control group,and the medullary cavity had been penetrated to the implanted materials in study group at 24 week;Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone in both groups grew fastest 8 weeks after surgery,while slow down at 16 week.

纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨分别与成骨细胞共培养后，其各时间点CCK-8法检测值与空白对照无显著差异(P＞0.05)，成骨细胞均在第5天达到增殖高峰期；培养7天后，实验组细胞蛋白含量高于对照组及空白组(P＜0.05)，后两者之间则无显著差异P＞0.05碱性磷酸酶活性在三组间均无显著差异(P＞0.05电镜下可见成骨细胞在两种人工骨上都有良好生长贴附能力。4.X-ray显示两种粉体在大鼠股骨骨洞植入第2周时都开始出现了降解，第4周时更为明显，纳米珍珠层粉较之微米珍珠层粉降解更快，而空白对照组骨洞阴影仍可见，至8周时，则所有组骨洞均己闭合修复，X-ray下已不可见原钻孔痕迹，恢复正常骨质密度；硬组织磨片四环素荧光双标记结果显示纳米珍珠层粉植入组较其余两组在骨缺损区周围新骨生长速度更快，空白组速度最慢P＜0.05电镜观察及常规脱钙切片亦可见到纳米粉体降解较快；由以上两种原材料制得的纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨在大鼠体内均与周围组织结合良好，无明显炎症反应。5.X-ray显示纳米珍珠层/消旋聚乳酸复合人工骨植入兔桡骨缺损区后其骨愈合速度较对照组微米珍珠层/消旋聚乳酸复合人工骨植入的快，至植入术后24周，实验组骨缺损区接近正常骨密度，对照组骨缺损区密度较低，空白组则呈现骨不连状态；骨密度测量结果显示术后8周、16周、24周实验组的骨密度值高于对照组(P＜0.05，24周实验组的骨密度值与术前所测得的正常值无显著性差异P＞0.05动物取材大体所见均显示组织相容性良好，骨组织逐渐由植入材料两端向中央生长；常规切片HE染色及硬组织磨片Stevenel\'s blue/Van Geison\'s picro-fuchsin联合染色均可见实验组骨缺损区长势优于对照组，至术后24周，实验组骨髓腔与材料已呈相交通状；硬组织磨片荧光显微镜下观察，两组材料在术后8周处于骨生长最快速时期，16周时速度开始减慢，术后4、8、16周时实验组的新骨生长速度均较对照组的快

objective study on the nature of medicine and biology of medpor plasty plate,and its clinical results and pinna support in reconsurction of auricleⅰstage.methods 25cases with congenital absense of auricle were operated useing medpor plasty pinna support.results twelve five cases were successfcelly.the pinna support were easy to process,not easy to be out of shape,no toxin,and its histocomitibility was good.conclusion it is sugˉgested that using medpor plasty to be pinna support iyas good for reconstruction of auricle.

目的 探讨使用一种新材料medpor支架医学生物学性能及其在耳廓再造术中的临床应用效果。方法 25例先天性小耳廓畸形采用medpor为支架行ⅰ期耳廓再造术。结果25例耳廓再造皆成功，耳廓支架易加工，不易变形，无毒，与组织相容性良好。结论采用medpor材料作为耳廓再造的支架是可行的新材料。它无须切取自体肋软骨之苦，既能缩短手术时间，立体感又强，微细结构清晰。

Zheng Wei was born in 1972, who, as a professor and graduate superior, was employed in the college of material science and engineering of Harbin University of Science and Technology. In 1993 she graduated in Harbin Institute of Technology and got Bachelor Degree. After hading gotten Master Degree of HUST in 1996, she got PH.D. in part time of HIT.

郑威，1972年生。材料科学与工程学院无机非金属材料系教师，教授，硕士生导师。1993年毕业于哈尔滨工业大学环境工程专业获工学学士学位；1996年毕业于哈尔滨理工大学绝缘材料与技术专业获工学硕士学位，同年留校任教； 2005年获得哈尔滨工业大学材料物理与化学工学博士学位。

It has raised great interests of research on interface of heterogenic material combination in resent years. In this research program, Al2O3, AlN and Si3N4 ceramics include Si samples had been surface metallized by pulsed high energy density plasma gun, and micro and macro behavior of interface between metallic film and substrate were studied in detail.

异质材料结合的界面研究是近年来材料研究的热点之一，本课题采用脉冲高能量密度等离子枪对氧化铝、氮化铝和氮化硅等纯陶瓷以及纯硅片材料基片表面进行金属化，进而对于金属膜/基底界面的微观和宏观行为进行了研究。

Results indicates that PHEDP gun material surface metallization can lead chemical reaction between metallic element and interface, and thus generate compounds, form firm interface, even for heterogenic materials, which have big difference on structure, organization and properties.

研究结果表明，用脉冲HEDP法材料表面金属化，即使对于结构、组织和性质差异较大的异质材料界面，金属元素与材料界面也会发生化学反应，形成化合物，使得界面结合非常牢固。

Based on the deterioration mechanism of corrosive medium, a lot of polymer such as ternary-polymer, adding-felt addition, hydrophobe and polypropylene fiber were added to enhance the performance of anti-corrosion, anti-penetration, conglutination and anti-cracking of original cementious material. The microstrure of cementious material was changed from the simplex hydration product of cement to the superposition structure of the hydrolysate of polymer and the hydration product of cement. A lot of the corrosive ions were prevented from the interior of concrete by this stable structure. The results of tryout indicated that the mending material has the good effect at the corrosion form of corrosive medium.

根据介质腐蚀形式的劣化机理，该文以提高修补材料耐腐蚀性能、抗渗透性能、粘结性能和抗裂性能为出发点，采用添加有机硅改性三元共聚物、增粘剂、孔隙憎水剂等多种聚合物和聚丙烯纤维对原水泥基材料进行改性，使得修补材料的内部微观结构从单纯的水泥水化产物转变成聚合物和水泥水化产物叠合的空间网状结构，这种稳定的结构能有效抵抗各种介质离子的侵蚀，在实际工程上的试用也显示出新修补材料良好的使用效果。

The study on the electrical property shows that its dielectric property decreases with the slowly increase of frequency in dry state; in hygrometric state (52.9%), the dielectric property grows obviously and declines swiftly with the increase of frequency; and it tends to be stable when the frequency is over 10^4Hz. The specific resistance decreases linearly with the increase of the frequency. The results indicate that the electric properties of the hot press moulded wheat gluten are subject to the compaction rate of the material structure.

对小麦麸质模压板的电性能研究表明，干态下其介电性能随电场频率增加而下降，但变化小；湿态下其介电性能明显提高，且随频率增加迅速下降，超过10^4Hz后区域变化趋于稳定；热压小麦麸质材料的电阻率随频率的增加呈直线下降；小麦麸质热压材料的电性能主要决定于材料结构的密实程度。

To discuss the hygrothermal stress influence on strength of the building material caused by the change of temperature and moisture content,on the basis of the coupling equations of thermal conduction and moisture diffusion,its transient temperature and humidity field are derived.

为探讨温湿度变化引起的热湿应力对建筑材料强度的影响，从热传导、湿扩散的耦合方程出发，求得瞬态温度场和湿度场，并推导出包含热湿效应的各向同性材料的本构方程，从而由数值法得出材料应力大小及分布。

The task of our course is to make the students understand the inbeing of functional materials, master the basic test and analyse methods.

该课程的主要任务是使学生理解材料功能特性产生的内在本质，掌握材料功能特性基本的实验测试方法与分析技术，培养学生综合分析、解决问题的能力和实验技能，为今后从事新材料开发与研制工作打下坚实基础。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！