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。
The solidification shrinkage mechanism of unsaturated polyester resin is analysized by using free Volume theory in this paper.
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.
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.
该涂料具有对基材附着力好、固化收缩小、无毒环保、使用方便、可长期在高温和高湿环境下使用等优点。
It shows good adhesion, small curing shrinkage, non toxicity and simple application process. The coatings thereof can be used in high temperature and moisture circumstances for long term.
本文对MFE环氧乙烯基酯(含mfe型和afe型二种型号)树脂的固化性能(凝胶时间、放热峰和固化收缩率)作了报道并进行讨论。
The curing characteristics such as gel time, heat Peak and curing shrinkage rate of MFE epoxy vinyl ester resin (MFE type and AFE type) are discussed in this paper.
结果表明，在不饱和聚酯树脂中加入2 0 %的该类低收缩添加剂，树脂的固化收缩率为2 1% ，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.
它们在固化过程中收缩较大或体积减少较多。
They also undergo a high shrinkage or reduction in volume during solidification.
我们发现收缩应力随固化温度直线增加。
Shrinkage stress was found to increase linearly with cure temperature.
常规室温下固化聚酯的经验法则是：直线每一英尺的收缩量为1/32英寸（当加强玻纤重量比为25%时）。
A general rule of thumb for conventional room-temperature cured polyesters is 1/32 inch of shrinkage per linear foot when reinforced with 25 weight percent glass content.
此外，作为晶体固化和量的收缩，熔化物的替代品一定会沿着交错的晶体网络流过一段曲折的路程。
Also as dendrites solidify and shrink in volume replacement of melt must flow along a tortuous path of interleaving dendrites.
本文介绍了国外关于不饱和聚酯树脂在低温固化时，LPA对收缩控制影响状况的研究。
The paper introduces UP resin cures at low temperature and effect of LPA on the control of shrinkage.
实际工作中，我们可以应用这个表达式来定量求出放热面积，对树脂固化的最终强度、硬度、收缩等远期性能作超前的定量的比较。
In our practical work, we can apply it to quantify exothermic area. And we can also apply it to compare quantitatively the last intensity, hardness and contraction of resin solidification.
特别是树脂的固化体积收缩率显著降低，从7％下降到0.8％，明显改善了涂膜的平整性。
The volume shrinkage of the sample was lowed from 7% to 0.8%, which apparently smoothen the film.
方法采用微波能和水浴两种方法加热固化义齿基托树脂，进行挠曲强度、度和收缩率的对比分析。
Methods The flecture strength, hardness and shrinkage were compared in using microwave-cured and water bath-cured denture base resins.
它具有机械强度高、韧性好、耐热好及低收缩性、固化性好等特点。
It has high mechanical strength, toughness, good heat resistance and low shrinkage, good curing characteristics.
它具有机械强度高、韧性好、耐热性好及高的热强度、低收缩性、固化性好等特点。
It has high mechanical strength, toughness, good heat resistance and high thermal intensity, low shrinkage, good curing characteristics.
紫外光固化涂料由于固化速度快、体积收缩大，故通常存在与金属基材附着力差的问题。
Because of the rapid curing rate and big volume shrinkage, UV-curable coiling coatings are generally of bad adhesion to metal substrate.
树脂固化时收缩应力的主要原因是单体之间的分子间距离缩短变为共价距离。
The main reason of shrinkage stress during curing period is the change from distance between monomer molecules to covalent distance .
它具有机械强度高、韧性好、耐热性、低收缩性、固化性好等特点。
It has high mechanical strength, toughness, heat resistance, low shrinkage, good curing characteristics.
考察了活性单体、预聚体及偶联剂对紫外光固化胶粘剂的粘接强度、体积收缩的影响。
The effect of active monomers, oligomers and couple agent on shear strength and volume shrinkage of UV-curing adhesive was investigated.
大体积混凝土在固化过程释放的水化热会产生较大的温度变化和收缩作用。
Releasing steam heat from the mass concrete structures while solidifying leads to produce the temperature change and contraction.
结论：树脂固化时的体积收缩可在黏结层产生较大的应力，影响黏结强度。
CONCLUSION: Polymerization shrinkage of composite resin has negative effect on bonding strength of adhesives.
对于固化淤泥，物理力学性质的研究已经比较多，但是对于收缩性质的研究还未见报道。
The mechanics property of solidified dredged material has been fully studied, but the shrinkage property of solidified dredged material is not so clear.
本文主要研究了固化剂、纳米二氧化硅粉和碳酸钙粉等外加剂对硅橡胶模具线收缩率的影响。
The effects of solidified agent, nanometer silicon dioxide powder and calcium carbonate powder on line contraction percentage of silicon rubber mould were discussed in this paper.
结果表明，MTC固化体的体积收缩率远小于水泥石的体积收缩率。
The results show that the volume shrinkage of MTC solidified body is far less than that of conventional cement.
6993为固化时放热峰低、收缩率小的新型不饱和聚酯树脂。
HCH-6993 for a curing exothermic peak at the low shrinkage rate of new small unsaturated polyester resin.
本发明石材勾缝胶具有如下优点：渗透性好，固化后不粘手，抗收缩能力强，打磨后胶有亮度等优点。
The jointing glue for stone has the advantages of good permeability, no tackiness after curing, strong antishrinking capability, glue brightness after polishing and the like.
优选地，该粘合剂层在植针步骤期间被植入的纤维穿过，且产品在固化步骤前发生20- 50%的表面收缩。
Preferably, the adhesive layer is penetrated by the needled fibers during the needling step and the product is shrunk in area by 20-50% before the consolidation step.
优选地，该粘合剂层在植针步骤期间被植入的纤维穿过，且产品在固化步骤前发生20- 50%的表面收缩。
Preferably, the adhesive layer is penetrated by the needled fibers during the needling step and the product is shrunk in area by 20-50% before the consolidation step.
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