Effect of curing temperature on curing time and strength of adhesive

doi:10.19491/j.issn.1001-9278.2022.10.010

Abstract

Abstract:

In order to explore the influence of curing temperature on the curing time and strength of an adhesive，the adhesive was cured at curing temperatures of 25， 45， 65， and 85 ℃. The curing rates of three types of adhesives at different curing temperatures were investigated through the Shore hardness test， and their tensile shear strength， flexural strength， and compressive strength of at different curing temperatures were measured. The results indicated that the higher the curing temperature， the shorter is the curing time. Taking 25 ℃ as a benchmark， the curing time at 45 ℃ was shortened by about 50 %. At a curing temperature at above 45 ℃，the curing time was shortened by about 10 % with an increase in temperature by every 20 ℃. In view of the strength at 25 ℃， the adhesives showed a change rate of tensile shear strength within 6 % under different curing temperatures. Their increase rates in flexural strength and compressive strength were distributed in the ranges of 6 %~45 % and 9 %~50 %， respectively.

Key words: retarded?bonding prestress, retarding adhesive, curing temperature, tensile shear strength, flexural strength, compressive strength

CLC Number:

TQ314.24

HUANG Jianwei. Effect of curing temperature on curing time and strength of adhesive[J]. China Plastics, 2022, 36(10): 65-70.

Figures/Tables 9

References 18

1	李佩勋. 缓黏结预应力综合技术的研究和发展［J］.工业建筑，2008，38（11）： 1⁃5.
	LI P X. Research on the retard⁃bonded prestressed technique and development prospects［J］. Industrial Construction，2008，38（11）：1⁃5.
2	吴转琴，范蕴蕴，刘景亮，等. 缓粘结预应力钢筋用胶粘剂材料力学性能研究［J］. 工业建筑，2008，38（11）： 9⁃12.
	WU Z Q， FAN Y Y， LIU J L，et al.Study on mechanical properties of adhesive materials for retard⁃bonded prestressing strand ［J］. Industrial Construction，2008，（11）：9⁃12.
3	周建锋，尚仁杰，范蕴蕴，等. 缓粘结预应力钢筋用胶粘剂材料的稳定性研究［J］. 工业建筑，2008，38（11）： 13⁃16.
	ZHOU J F， SHANG R J， FAN Y Y，et al. Stability study on adhesive material of retard⁃bonded prestressing strand ［J］. Industrial Construction，2008，38（11）：13⁃16.
4	蒋方新，李仙花，李佩勋. 环氧树脂掺量对缓凝粘合剂强度的影响［J］. 应用化工. 2022，51（3）：768⁃770.
	JIANG F X， LI X H， LI P X. The effect of epoxy resin content on the strength of the retarding adhesive ［J］. Applied Chemical Industry. 2022，51（3）：768⁃770.
5	吴转琴. 缓粘结预应力钢绞线：［S］. 中国标准出版社.
6	SUI W， WANG Z， ZHAO Z，et al. Failure mechanism and mechanical properties of a retard-bonded prestressed concrete girder while curing［J］. Advances in Civil Engineering，2019（2019）：14.
7	吴转琴，曾昭波，尚仁杰，等. 缓粘结预应力钢绞线摩擦系数试验研究［J］.工业建筑，2008（11）：20⁃23.
	WU Z Q， ZENG Z B， SHANG R J，et al. Experimental study on friction coefficient of retard⁃bonded prestressing strand ［J］. Industrial Construction，2008（11）：20⁃23.
8	熊小林，李金根，李一心.缓粘结预应力筋摩阻损失的试验研究［J］.建筑技术，2008，39（12）：943⁃946.
	XIONG X L， LI J G， LI Y X. Experimental study on frictional resistance of bond⁃retarded prestressed bars［J］.Architecture Technology，2008，39（12）：943⁃946.
9	Cao G H， Hu J X， Xiao M， et al. Ultimate bearing capacity test of retard⁃bonded prestressed concrete T⁃beams［C］//Applied Mechanics and Materials. Trans Tech Publications Ltd，2013，256： 769⁃774.
10	Zhao J， Li Y， Wang Q. Experimental research on a new type of bond⁃retarded prestressed system［J］. Journal of Building Structures，2005，26（2）： 52⁃59.
11	Zhang B， Ye J， Chen B，et al. Influence of curing temperature on performance of epoxy thermosets［J］. China Plastics Industry， 2009，37（9）： 64⁃66.
12	Zhou X Y， Feng X. Experimental research on crack width of retard⁃bonded partially prestressed concrete t⁃beams［J］. Journal of Highway and Transportation Research and Development， 2011， 28（1）： 56⁃61.
13	Zhang T， Visintin P， Oehlers D J，et al. Presliding shear failure in prestressed RC beams. I： partial⁃interaction mechanism［J］. Journal of Structural Engineering，2014，104（10）：890⁃914.
14	王占飞，胡正伟，曹少朋，等.缓粘结剂固化前后预应力筋应力损失及粘结性能［J］.辽宁工程技术大学学报（自然科学版），2017，36（6）：619⁃623.
	WANG Z F， HU Z W， CAO S P， et al. Stress loss and adhesive properties of retard⁃bonded PC tendons before and after retard⁃bonded adhesive cure［J］. Journal of Liaoning Technical University（Natural Science），2017，36（6）：619⁃623.
15	Banea M D， da Silva L F M. The effect of temperature on the mechanical properties of adhesives for the automotive industry［J］. Proceedings of the Institution of Mechanical Engineers， Part L： Journal of Materials： Design and Applications， 2010， 224（2）： 51⁃62.
16	Varley R J， Hodgkin J H， Simon G P. Toughening of trifunctional epoxy system. V. structure–property relationships of neat resin［J］. Journal of applied polymer science， 2000， 77（2）： 237⁃248.
17	Ziaee S， Palmese G R. Effects of temperature on cure kinetics and mechanical properties of vinyl–ester resins［J］. Journal of Polymer Science Part B： Polymer Physics， 1999， 37（7）： 725⁃744.
18	缓粘结预应力钢绞线专用粘合剂：［S］. 北京：中国标准出版社，2012．

试样编号	固化温度/ ℃	拉伸剪切强度/ MPa	抗折强度/ MPa	抗压强度/ MPa	拉伸剪切强度变化率/%	抗折强度变化率/%	抗压强度变化率/%
试样1	25	15.51±0.85	21.52±0.60	64.23±0.78	0	0	0
	45	15.96±0.29	22.92±0.55	70.38±0.63	2.90	6.50	9.57
	65	16.00±0.22	24.37±0.36	81.59±0.78	3.16	13.24	27.02
	85	16.12±0.18	30.46±0.31	95.82±0.66	3.93	41.54	49.18
试样2	25	17.32±1.28	22.32±0.35	75.31±0.55	0	0	0
	45	17.58±0.93	23.96±0.22	86.44±0.34	1.50	7.34	14.77
	65	18.21±0.11	25.63±0.25	97.13±0.30	5.14	14.82	28.97
	85	18.30±0.21	32.33±0.30	110.22±0.32	5.66	44.84	46.35
试样3	25	22.24±0.14	25.65±0.53	80.69±0.61	0	0	0
	45	21.85±0.17	26.98±0.19	93.65±0.22	1.75	5.18	16.06
	65	22.35±0.14	28.56±0.33	109.56±0.45	0.49	11.34	35.77
	85	22.53±0.13	35.45±0.25	120.00±0.40	1.30	38.20	48.71

试样编号	固化温度/ ℃	拉伸剪切强度/ MPa	抗折强度/ MPa	抗压强度/ MPa	拉伸剪切强度变化率/%	抗折强度变化率/%	抗压强度变化率/%
试样1	25	15.51±0.85	21.52±0.60	64.23±0.78	0	0	0
	45	15.96±0.29	22.92±0.55	70.38±0.63	2.90	6.50	9.57
	65	16.00±0.22	24.37±0.36	81.59±0.78	3.16	13.24	27.02
	85	16.12±0.18	30.46±0.31	95.82±0.66	3.93	41.54	49.18
试样2	25	17.32±1.28	22.32±0.35	75.31±0.55	0	0	0
	45	17.58±0.93	23.96±0.22	86.44±0.34	1.50	7.34	14.77
	65	18.21±0.11	25.63±0.25	97.13±0.30	5.14	14.82	28.97
	85	18.30±0.21	32.33±0.30	110.22±0.32	5.66	44.84	46.35
试样3	25	22.24±0.14	25.65±0.53	80.69±0.61	0	0	0
	45	21.85±0.17	26.98±0.19	93.65±0.22	1.75	5.18	16.06
	65	22.35±0.14	28.56±0.33	109.56±0.45	0.49	11.34	35.77
	85	22.53±0.13	35.45±0.25	120.00±0.40	1.30	38.20	48.71

[1]	RUAN Fangtao, XIA Chenglong, ZHANG Baogen, CAO Ye, LIU Zhi, XU Zhenzhen, ZHANG Jincao. Axial compressive properties of aramid⁃coated carbon⁃fiber⁃reinforced epoxy resins [J]. China Plastics, 2022, 36(4): 19-23.
[2]	. Study on Preparation and Antistatic Performance of Polyurethane Materials Modified with Reduced Graphene Oxide [J]. China Plastics, 2018, 32(05): 116-119.
[3]	. Study on Solventless Epoxy/Imide/Anhydride Impregnated Resins [J]. China Plastics, 2012, 26(11): 39-43 .
[4]	Huijian Li Wei Yu . Study on the ratio of the hollow glass bead modified epoxy resin based on the uniform design [J]. China Plastics, 2009, 23(12): 48-51 .
[5]	KONG Zhen-Xing. Research on diallyl phthalate resin toughened by vinyl ester oligomers [J]. China Plastics, 2009, 23(04): 36-40 .