【摘要】：鋁顏料是由微納米級二維片狀金屬鋁基所組成的粉狀,具有著獨特性質(zhì)的金屬顏料,常常在涂料工業(yè)中制備汽車金屬閃光面漆,或在塑料工業(yè)中作為閃光顏料使用。然而,近些年來隨著國家及地方政府綠色環(huán)保政策的出臺以及人們環(huán)保觀念的逐漸增強(qiáng),以往使用的油性(即溶劑型)鋁顏料已不能滿足工業(yè)清潔生產(chǎn)環(huán)保、健康的需求,許多學(xué)者及公司開始致力于環(huán)保(即水性)鋁顏料的制備及研究。此外,相對于有機(jī)顏料而言,金屬顏料單一的顏色使得其應(yīng)用面較窄,鋁顏料的彩色化也是目前研究的一個重要方向。本文分別就鋁顏料的耐腐蝕性和著色對鋁顏料的片基粉體進(jìn)行雙層包覆改性,并對其作為聚丙烯(PP)抗UV光氧老化性能填料的應(yīng)用進(jìn)行相應(yīng)研究,具體的研究內(nèi)容由以下三個部分構(gòu)成:(1)本文首先通過硅烷偶聯(lián)劑(YSiR_3)與正硅酸乙酯(TEOS)作為前驅(qū)體,共水解縮聚后制備出SiO_2包覆的鋁顏料片基,并研究不同硅烷偶聯(lián)劑對鋁片基表面改性的影響。實驗中,分別使用短鏈硅烷偶聯(lián)劑3-氨丙基三乙氧基硅烷(APTES)、乙烯基三乙氧基硅烷(VTES)與長鏈硅烷偶聯(lián)劑十二烷基三甲氧基硅烷(DBES)來包覆改性鋁片基,并采用SEM、FTIR、粒徑分析等手段對硅烷偶聯(lián)劑包覆改性后的鋁片基進(jìn)行表征。研究結(jié)果表明:相比于短鏈硅烷偶聯(lián)劑,長鏈硅烷偶聯(lián)劑DBES與TEOS共水解縮聚可以在鋁顏料表面形成一層致密的SiO_2膜層,有效地提高了鋁片基的耐腐蝕性。同時,通過正交實驗的方法進(jìn)一步優(yōu)化確定了 DBES和TEOS共水解縮聚包覆鋁片基的反應(yīng)條件,結(jié)果表明在3份TEOS,1份DBES、6份氨水、8份去離子水的條件下,在50℃的恒溫水浴鍋反應(yīng)6h后,可以得到耐腐蝕性最佳的SiO_2包覆的鋁片基。(2)在制備出SiO_2包覆的鋁片基(Al/SiO_2)的基礎(chǔ)上,對其進(jìn)行著色改性,制備出有機(jī)酞菁顏料包覆的藍(lán)色鋁顏料。實驗中首先使用濃硫酸與酞菁藍(lán)(CuPc)進(jìn)行磺化反應(yīng),制備出CuPc-SO_3H有機(jī)顏料。再使用液相沉積法對Al/SiO_2片基進(jìn)行著色,即利用CuPc-SO_3H與沉淀劑BaCl_2反應(yīng)形成Ba(CuPc-SO_3)_2沉淀顆粒沉積在Al/SiO_2片基的表面上,起到著色的效果。通過SEM、FTIR、XRD等表征CuPc-SO_3H顏料的添加量、色淀劑添加量、表面活性劑種類、反應(yīng)時間等條件對著色鋁顏料的色澤影響,得到的結(jié)論是:相對鋁顏料Al/SiO_2,在CuPc-SO_3H添加量為5wt%,BaCl_2用量5wt%,以SDS作為表面活性劑反應(yīng)90min后,可以得到光澤度最高的藍(lán)色鋁顏料。(3)為了進(jìn)一步研究制備出的藍(lán)色顏料與樹脂的相容性及其耐UV光老化性能,將本實驗中制備出的Al/SiO_2/Ba(CuPc-S0_3)_2藍(lán)色鋁顏料與光穩(wěn)定劑UV-622、抗氧化劑1010同時加入到聚丙烯(PP)中,通過雙螺桿擠出、熱壓成型、注塑成型等方式制備出免噴涂藍(lán)色PP塑料,再使用紫外線加速老化燈對制備出的樣條進(jìn)行加速光老化處理。通過拉伸性能和光學(xué)性能測試表征研究光穩(wěn)定劑UV-622和抗氧化劑1010對PP著色塑料的抗老化作用。最終確定,在著色鋁顏料含量為0.6wt%,光穩(wěn)定劑UV622含量為0.8wt%,抗氧化劑1010含量為2.0 wt%的條件下,制備出的藍(lán)色PP塑料在紫外燈加速老化照射336h后,相對于UV光老化前其拉伸強(qiáng)度下降1.7MPa,斷裂伸長率下降5.8%,光學(xué)性能上總色差 △E 為 1.31。
[Abstract]:The aluminum pigment is a powder composed of micro-nano-scale two-dimensional sheet metal aluminum base, metal pigment with unique properties, automobile metal flash surface paint often prepared in the coating industry, or used as a flash pigment in the plastic industry. However, in recent years, along with the promulgation of green environmental protection policy of state and local government and the gradual enhancement of the concept of environmental protection, the oil-based (i.e. solvent-based) aluminum pigment used in the past can not meet the requirement of environmental protection and health of industrial cleaning. Many scholars and companies began to devote themselves to the preparation and research of environmental protection (water-based) aluminum pigment. In addition, with respect to the organic pigment, the single color of the metal pigment makes its application surface narrow, and the colorization of the aluminum pigment is also an important direction of the present research. In this paper, two-layer coating modification was carried out on the corrosion resistance and coloring of aluminum pigment, and the application of polypropylene (PP) anti-UV photo-oxygen aging performance filler was studied. The specific research content was composed of three parts: (1) The aluminum pigment flakes coated with SiO _ 2 were prepared by silane coupling agent (YSiR _ 3) and tetraethyl silicate (TEOS) as precursors, and the effects of different silane coupling agents on the surface modification of aluminum sheet were studied. In the experiment, short chain silane coupling agent 3-aminopropyltrimethoxysilane (APTES), vinyltriethoxy silane (VTES) and long chain silane coupling agent dodecyl trimethoxysilane (DBES) were used to coat the modified aluminum sheet group, and SEM and FTIR were used. The aluminum sheet base modified by silane coupling agent was characterized by particle size analysis. The results show that, compared with the short-chain silane coupling agent, the long-chain silane coupling agent DBES and TEOS co-hydrolytic polycondensation can form a dense SiO _ 2 film layer on the surface of the aluminum pigment, and the corrosion resistance of the aluminum sheet group is effectively improved. The reaction conditions of DBES and TEOS were further optimized by orthogonal experiment. The results showed that under the conditions of 3 parts TEOS, 1 parts of DBES, 6 parts of ammonia water and 8 parts of deionized water, the reaction conditions were carried out at 50 鈩，

本文編號：2284572