本文選題：膨脹型防火涂料 + 阻燃體系��； 參考：《重慶科技學(xué)院》2017年碩士論文

【摘要】：當(dāng)前,各類建筑物中越來越廣泛的使用可燃、易燃的高分子聚合物材料,導(dǎo)致火災(zāi)頻發(fā)且常有重大火災(zāi)發(fā)生。對建筑物基材施涂防火涂料,是目前被廣泛應(yīng)用的一種防火保護(hù)方法。本論文以水性膨脹飾面型防火涂料為研究對象,分別向基礎(chǔ)涂料中加入不同粒徑和加量的納米氫氧化鋁(ATH)阻燃劑,研究納米ATH對防火涂料的影響規(guī)律和阻燃機(jī)理。主要開展了:1)確定基礎(chǔ)配方組分,通過正交試驗設(shè)計優(yōu)化防火涂料基礎(chǔ)配方;2)在防火涂料中添加不同粒徑不同比例的納米ATH,分別測試各防火涂料樣品的部分理化性能和燃燒性能,并對結(jié)果進(jìn)行分析;3)對高溫分解后形成的膨脹炭質(zhì)層進(jìn)行掃描電鏡分析和紅外分析,對防火涂料的熱解過程進(jìn)行熱重分析,結(jié)合實驗研究結(jié)果,分析納米ATH阻燃劑對防火涂料的影響規(guī)律和阻燃機(jī)理�，F(xiàn)得到以下結(jié)論:在確定防火涂料配方中基本組分的基礎(chǔ)上,采用()49L3正交試驗設(shè)計方法對乳液及膨脹阻燃體系進(jìn)行優(yōu)化,結(jié)合點燃時間測試結(jié)果分析得到阻燃效果最優(yōu)的涂料配方,該配方防火涂料在熱輻射強(qiáng)度為302/mkW,溫度為625℃條件下,其點燃時間為605 s,阻燃效果優(yōu)異。對基礎(chǔ)防火涂料樣品和添加了納米ATH的防火涂料樣品進(jìn)行理化性能測試和燃燒測試,綜合分析測試結(jié)果,得到MZ=100 nm ATH在加量為9%以內(nèi)的防火涂料性能較優(yōu),其中100-1和100-2阻燃效果最好,與基礎(chǔ)涂料8#相比阻燃性能顯著提升。從對防火涂料膨脹炭質(zhì)層的SEM-EDX分析中可以得出,MZ=100 nm ATH的加量在3%左右時形成的膨脹炭質(zhì)層是最理想的蜂窩狀結(jié)構(gòu)。通過紅外分析得到20-2、50-5、100-1的膨脹炭質(zhì)層內(nèi)增加了1300-1cm~1450-1cm波段內(nèi)出現(xiàn)的Si-O-Al強(qiáng)吸收不對稱伸縮振動峰,且在1100-1cm~1200-1cm波段處20-2、50-5、100-1比8#出現(xiàn)更多的3-4PO吸收特征峰,這些都促進(jìn)了膨脹炭質(zhì)層的形成,說明納米ATH對防火涂料的阻燃效果起到了促進(jìn)作用。從對防火涂料的TGA-DSC分析得到,加入納米ATH的防火涂料,無論是熱解溫度、熱解時間還是殘?zhí)苛烤鶅?yōu)于8#防火涂料,這些結(jié)論與錐形量熱儀測得點燃時間結(jié)果相符。同時說明納米ATH的加入提高了防火涂料的阻燃效果,且其脫水溫度和吸熱量與其粒徑、含量、加熱條件等有關(guān)。
[Abstract]:At present, combustible and flammable polymer materials are more and more widely used in all kinds of buildings, which lead to frequent and important fires. It is a widely used fire-proof protection method to apply fire-proof coatings to building substrates. In this paper, waterborne intumescent finishing fire resistant coatings were studied. Different particle size and amount of nano-aluminum hydroxide flame retardants were added to the basic coatings to study the influence of nano-sized ATH on the anti-fire coatings and the mechanism of flame retardancy. I mainly developed the: 1) to determine the basic formula components, The basic formula of anti-fire coating was optimized by orthogonal test design. Nano-ATHs with different particle sizes and different proportions were added to the anti-fire coatings, and some physicochemical properties and combustion properties of the samples were tested respectively. The results were analyzed by SEM and IR, and the pyrolysis process of fire resistant coatings was analyzed by thermogravimetry. The effect of nano ATH flame retardant on fire resistant coating and its flame retardant mechanism were analyzed. The conclusions are as follows: on the basis of determining the basic components in the formulation of fire resistant coatings, the emulsion and intumescent flame retardant system were optimized by using the orthogonal design method of Jianzhi49L3. In combination with the test results of ignition time, the best formulation of flame retardant coating was obtained. The flame retardant coating had excellent flame retardant effect under the condition of 302mkW of heat radiation intensity and 625 鈩，

本文編號：1775294