【摘要】：研究了鋪層參數(shù)對纖維增強塑料排煙筒內(nèi)襯偏軸拉伸性能的影響,從而為施工提供相應(yīng)的數(shù)據(jù)支持。采用單向玻璃纖維布(U)/短切玻璃纖維氈(C)/乙烯基酯樹脂制備層合板。設(shè)計7種不同的鋪層結(jié)構(gòu):[U/U/C]、[U/U/C]2、[U/U/C]3、[U/U/C]4、[C/U/U/U/U/C]、[U/C/U/U/C/U]、[U/U/C/C/U/U],[U/U/C]為基本結(jié)構(gòu)單元,[U/U/C]2、[U/U/C]3、[U/U/C]4分別為基本結(jié)構(gòu)單元[U/U/C]的2疊加結(jié)構(gòu)、3疊加結(jié)構(gòu)和4疊加結(jié)構(gòu)。采用手糊成型的方法制備板材,分別研究了基本結(jié)構(gòu)單元的疊加數(shù)以及鋪層順序?qū)?種鋪層結(jié)構(gòu)的偏軸拉伸性能的影響。結(jié)果表明:隨著偏軸角度的增加,7種鋪層結(jié)構(gòu)強度逐漸下降,7種鋪層結(jié)構(gòu)在偏軸角度為15°時的強度相對于0°強度分別下降了49.58%、37.00%、25.98%、25.24%、40.33%、40.93%、38.80%,纖維增強塑料排煙筒內(nèi)襯施工過程中造成的偏角應(yīng)控制在15°以內(nèi)。隨著基本結(jié)構(gòu)單元循環(huán)次數(shù)增加,[U/U/C]、[U/U/C]2、[U/U/C]3、[U/U/C]4四種鋪層結(jié)構(gòu)在0°方向的強度沒有明顯差異,在15°~90°偏角范圍內(nèi),偏軸拉伸強度逐漸增加;[C/U/U/U/U/C]、[U/C/U/U/C/U]、[U/U/C/C/U/U]三種對稱層合板在0°方向的強度比非對稱[U/U/C]2提高了13.43%、25.73%和27.84%;適當增加纖維增強塑料排煙筒內(nèi)襯基本結(jié)構(gòu)單元數(shù)和采用對稱鋪層可提高偏軸強度。
[Abstract]:The effect of laying parameters on the axial tensile properties of fiber reinforced plastic smoke exhaust tube lining was studied, which provided the corresponding data support for construction. Laminated plywood was prepared by using unidirectional glass fiber cloth (U) / short cut glass fiber felt (C) / vinyl ester resin. Seven different paving structures are designed: [U/C], [U/C] 2, [U/C] 3, [U/C] 4, [C/U/C], [U/C/U], [U/C/U/U], [U/C] is the basic structural unit, [U/C] 2, [U/C] 3, [U/C] 4 is the 2 superimposed structure, 3 superimposed structure and 4 superimposed structure of the basic structural unit [U/C], respectively. The effects of the superposition number of basic structural units and the order of lamination on the axial tensile properties of seven kinds of lamination structures were studied by hand paste molding. The results show that with the increase of offset angle, the strength of seven kinds of paving structures decreases gradually, and the strength of 7 kinds of paving structures decreases 49.58%, 37.00%, 25.98% and 25.24%, respectively, compared with 0 擄strength when the eccentric axis angle is 15 擄, and the strength of 7 kinds of paving structures decreases by 49.58%, 37.00%, 25.98% and 25.24%, respectively. 40.33%, 40.93%, 38.80%. The deflection angle caused by the construction of fiber reinforced plastic smoke exhaust pipe lining should be controlled within 15 擄. With the increase of cycle times of basic structural units, there is no significant difference in the strength of [U/C], [U/C] 2, [U/C] 3, [U/C] 4 in the direction of 0 擄, in the range of 15 擄~ 90 擄deflection angle. The tensile strength of eccentric axis increases gradually. The strength of [C/U/C], [U/C/U] and [U/C/U/U] three kinds of symmetric laminated plates in the direction of 0 擄is 13.43% higher than that of asymmetric [U/C] 2. 25.73% and 27.84%; The eccentric axial strength can be improved by properly increasing the number of basic structural units of fiber reinforced plastic smoke exhaust tube lining and adopting symmetrical paving.
【作者單位】： 華東理工大學(xué)材料科學(xué)與工程學(xué)院;中國電力工程顧問集團華東電力設(shè)計院有限公司;
【基金】：上海市科學(xué)技術(shù)委員會科研計劃項目(15DZ0504600)
【分類號】：TB332

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