固化收缩
- 网络cure shrinkage;Curing Shrinkage;polymerization shrinkage
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在临床中,牙体修复材料的固化收缩是造成牙体修复失败的主要原因。
Polymerization shrinkage of resin composites is a major obstacle to their clinical success as dental restorative materials .
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复合树脂固化收缩应力对黏结强度影响的三维有限元分析
Analysis of stress in adhesive layer induced by polymerization shrinkage of composite resin using 3D finite element model
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国外低轮廓UPR固化收缩控制研究发展动态
Study progress in shrinkage control of low profile unsaturated polyester resin during cure
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研究结果表明,引入PU提高了不饱和聚酯树脂的韧性,增加了与天然纤维的界面浸润性,降低了不饱和聚酯树脂的固化收缩率。
The study showed that with the addition of polyurethane , the toughness of unsaturated polyester was improved , the interface soaking with natural fiber was increased and the curing shrinkage rate was lowered .
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环氧树脂是一种应用广泛的热固性树脂,是ACF胶粘剂重要的基体树脂,环氧树脂型ACF具有粘结力强、固化收缩率小、耐化学介质稳定性好等优点。
Epoxy resin is a kind of thermosetting resin , which is an important base resin for ACF adhesive . Epoxy-based ACF has many outstanding performances , such as great adhesive stress , chemical resistance and low shrinkage .
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通过实验测试了ACA的固化收缩率、固化度、弹性模量以及临界界面应力,建立了固化度与键合温度和键合时间的关系模型。
The curing shrinkage rate , the curing degree , the elastic modulus and the critical interface stress of ACA are measured . The relationship of the curing degree with the bonding temperature and the bonding time is established .
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力学性能测试表明,当PU含量为5%时,其冲击强度可提高80%,弯曲模量降低小于20%,固化收缩率低于4%。
The testing of mechanical properties showed that when the content of PU was 5 % , the impact strength was increased by 80 % , the decrease of flexural modulus was less than 20 % and the curing shrinkage rate was less than 4 % .
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复合材料薄板的成型固化收缩变形研究基于GTN细观损伤模型的板料成形过程损伤分析
Study on the shrinkage deformation of thin composite laminates during curing process ductile damage analysis for fracture in sheet metal forming based on GTN mesoscopic damage model
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复合材料薄层板常温固化收缩及翘曲变形肯纳薄锡层镀锡薄钢板
Curing Shrinkage and Warpage Deformation of Composite Thin Laminates at Room Temperature
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快速成型用光敏树脂固化收缩率的研究
Study of Shrinkage of Photosensitive Resin for Rapid Stereo Lithography
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不饱和聚酯树脂的固化收缩机理与收缩应力分析
Curing shrinkage stress and mechanism analyses of up resin
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光纤光栅传感器监测混凝土固化收缩实验研究
Experiment Study on Monitor of Concrete Shrink in the Cure Period with FBG Sensor
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一维固化收缩应力的研究
Study of curing stress under one-dimensional shrinkage constraint
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本文用自由体积理论分析了不饱和聚酯树脂的固化收缩机理,理论计算与实验测定结果基本一致。
The curing shrinkage mechanism of UP resin were analyzed with free volume theory .
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对材料固化收缩与翘曲变形的定量关系进行了分析;
THe quantitative relation of cured shrinkage of prototyping matters to curl distortion is presented .
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低轮廓不饱和聚酯树脂中低温固化收缩控制机理的理论和实验研究
Theoretic and Experimental Study of Shrinkage Control Mechanism of Low Profile Unsaturated Polyester Resins during Curing at Low-medium Temperature
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结果表明,这类新型树脂在室温下,固化收缩小于环氧树脂。
The results show that the novel resin has a cure shrinkage lower than that of typical epoxies in room temperature ;
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本文研究了自制低收缩添加剂用量对不饱和聚酯树脂固化收缩率与力学性能的影响。
This paper studies the self-made low profile additive and its influence on shrinkage rate and mechanical properties of UP resin .
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结果表明:纤维体积分数、固化收缩率、铺层方式和固化工艺温度都对复合材料固化变形有着显著的影响。
The results indicate that fiber volume fraction , curing shrinkage , lay-up styles and cure temperature have significant influence on curing deformation .
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固化收缩对层合板变形曲率影响很小,主要发生在第二个保温平台的前半段。
The chemical volumetric shrinkage has slight influence on the laminate deformation and it mainly occurs at the first half of the second temperature dwelling .
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选用三种不同固化收缩率的基体树脂和两种银粉,分别配制了六种导电胶。
Based on two kinds of silver powder with different morphology and three matrixes with different curing shrinkage , six electrical conductive adhesives were prepared .
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本文选用聚氨酯、聚醋酸乙烯酯、丁腈橡胶等聚合物作为低收缩添加剂,研究了它们在降低乙烯基酯树酯固化收缩率方面的作用。
The role of polyurethane , polyvinyl acetate and poly ( butadiene-coacrylonitile ) as low shrinkage additives to vinyl ester resin during curing is studied .
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经对实验结果分析发现:复合树脂的固化收缩量的大小与固化光源的种类有关,用高能氙灯光源照射产生的固化收缩量最小;
Results : The polymerization shrinkage mass es relate to the kinds of light source and the shrinkage mass produced by the high power xenon light source is least .
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研究发现,在复合材料纤维体积分数比较高、树脂固化收缩率比较低的情况下,采用线弹性和粘弹性两种模型计算的固化变形量差别不大,因为这时树脂的粘弹效应不显著。
We find out that the difference between the results which are calculated by the two models respectively is not significant when the fiber volume fraction is relatively high and the resin curing shrinkage is relatively low .
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本研究通过建立微孔塑料注射成型后充填过程的数学模型,并构造有效的算法对模型进行求解,对微泡生长和熔体固化收缩过程进行模拟,预测型腔内微泡的生长情况和压力场分布。
This paper focuses on developing a mathematical model and numerical simulation for cell growth and melt curing shrinkage during the posting-filling stage of the microcellular injection molding to predict the final cell size distribution and the pressure field .
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结果表明,在不饱和聚酯树脂中加入20%的该类低收缩添加剂,树脂的固化收缩率为21%,弯曲强度保有率为88%,弯由模量没有明显变化;
It shows that after adding 20 % low profile additive to the UP resin , the shrinkage rate of cured resin is 2.1 % , the retention rate of bending strength is 88 % and no change in flexural modulus .
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在此基础上分析复合材料的固化收缩应力和热应力的形成机制,数值模拟内应力的演变过程以及复合材料结构件的固化变形。
On this basis , we aimed to explore the formation mechanism of curing shrinkage stress and thermal stress in composites , simulate the evolution of its internal stress and curing deformation and analyze the effects of the processing parameters and structural parameters on the curing deformation .
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固化淤泥收缩性质研究
Study on the Shrinkage Properties of Solidified Dredged Sediment
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光纤法-珀传感器监测混凝土固化期收缩应变的实验研究
Experiment Study on shrink strain monitoring of concrete with fiber optic F-P strain sensor
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讨论了齐聚物及稀释剂对固化体系收缩率的影响。
The effects of oligomer and diluent on the shrinkage of curing system were discussed .