本文關鍵詞：基于聚亞胺的仿生復合材料制備及性能研究　出處：《吉林大學》2017年博士論文　論文類型：學位論文

  更多相關文章： 聚亞胺 復合材料 仿生材料 機械性能 碳酸鈣 二氧化鋯 軟硬相間

【摘要】：聚亞胺,也被稱為希夫堿,是一種新型的熱固性聚合物,具有可塑性、可循環(huán)性、可自修復性等一系列非常獨特的性質,因此引起了廣泛的關注和研究�，F(xiàn)有關于聚亞胺的研究主要是將少量的聚亞胺材料添加進碳材料或其他聚合物制備復合材料,而基于聚亞胺自身的增強復合材料卻鮮有報道。本文合成了性能不同的聚亞胺基底材料,并基于動態(tài)共價化學反應制備了碳酸鈣(CaCO_3)增強聚亞胺仿生復合材料、二氧化鋯(ZrO_2)增強聚亞胺納米復合材料和軟硬相間聚亞胺仿生復合材料。對上述聚亞胺基底材料和三種復合材料分別進行了基本理化性能的表征和機械性能、熱學性能的檢測。本文由不同的二醛(對苯二甲醛和戊二醛)和二乙烯三胺、三乙烯四胺制備了兩種不同的聚亞胺基底材料,分別為含對苯二甲醛的PI-H和含戊二醛的PI-S。首先,PI-H和PI-S均具有良好的耐常見有機溶劑腐蝕性和46%左右的吸水率,而在其他性能上表現(xiàn)不同。但整體而言,PI-H和PI-S具有一些聚亞胺材料獨有的特性:加熱時具有可塑性,可循環(huán)使用性,且具有自修復性質。而兩種聚亞胺材料的各項機械性能保持較高數(shù)值,能與常見的塑料相媲美。本文將CaCO_3顆粒以不同的比例添加進聚亞胺基底粉末中,制備了一系列CaCO_3增強的聚亞胺仿生復合材料。由機械測試結果可知,CaCO_3增強的仿生聚亞胺復合材料的拉伸強度、韌性、彎曲強度和抗沖擊強度等機械性能相對于聚亞胺基底材料都有大幅度提高。特需指出,CaCO_3增強的仿生聚亞胺復合材料良好的結合了拉伸強度和韌性,使得兩者被同時增強。CaCO_3增強的仿生聚亞胺復合材料的不同機械性能達到最優(yōu)值時需要添加CaCO_3顆粒的量不同。同時,添加CaCO_3顆粒還對聚亞胺基底材料的熱穩(wěn)定性有一定程度的提升。本文還嘗試將ZrO_2納米粒子按不同的比例摻入聚亞胺基底材料中,通過X射線衍射(XRD)和傅里葉紅外(FT-IR)結果確認成功制備了一系列ZrO_2增強的聚亞胺納米復合材料。ZrO_2增強的聚亞胺納米復合材料的拉伸強度、韌性、抗沖擊強度、彎曲強度、斷裂伸長率等各項機械性能相對于聚亞胺基底均被顯著提高,但與添加CaCO_3顆粒的情況類似,ZrO_2增強的聚亞胺納米復合材料達到不同機械性能最大值時對應的Zr O_2納米粒子添加量不同。不同于常規(guī)的無機-有機復合材料,Zr O_2增強的聚亞胺納米復合材料的拉伸強度和韌性在相同的ZrO_2添加量下能被同時增大。同樣,添加ZrO_2納米粒子還能對復合材料的熱穩(wěn)定性有一定的提高。此外,本文利用亞胺的動態(tài)共價化學復分解反應,基于硬度不同的PI-H和PI-S兩種聚亞胺基底材料,通過簡便的熱壓方法制備了一系列軟硬相間聚亞胺仿生復合材料。本文制備的軟硬相間聚亞胺仿生復合材料可以實現(xiàn)兩種基底材料PI-H和PI-S從0%到100%的任意比例混合,并能產(chǎn)生協(xié)同作用。當PI-S添加量為25%時,軟硬相間聚亞胺仿生復合材料的摩擦系數(shù)、抗沖擊強度和拉伸彈性模量均出現(xiàn)極值。特需指出,軟硬相間仿生復合材料摩擦系數(shù)極值點所對應的PI-S添加量不隨摩擦速度改變而改變,但卻隨著負載變化而變化,說明對于軟硬相間復合材料摩擦性能起決定性作用的工況條件主要是負載。無論是在摩擦測試、抗沖擊測試或是原位拉伸測試中,軟硬相間聚亞胺仿生復合材料表現(xiàn)出的特性都是結合了PI-H和PI-S各自的性質。所以當PI-S以適當比例(25%)添加時,軟硬相間聚亞胺仿生復合材料的不同機械性能,包括摩擦系數(shù)、抗沖擊強度和拉伸彈性模量均出現(xiàn)最優(yōu)值,并都優(yōu)于兩種聚亞胺基底材料。本文為日后制備基于聚亞胺的復合材料提供了有效的參考和新的方法,并且也為聚合物復合材料中不同組分添加比例實現(xiàn)0-100%的任意比例調整提供了新的借鑒。同時,本文展示了一種價格低廉,操作簡便的制備聚亞胺增強復合材料的方法,為制備基于聚亞胺的增強復合材料提供了新思路,也為拓展聚亞胺材料的應用提供了更多的可能。
[Abstract]:Polyimide, also known as the Schiff base, is a kind of new thermosetting polymers, has plasticity, can be recycled, can self repair and a series of unique properties, it has aroused widespread concern and research. The existing research on polyimide is mainly the polyimide material adding a small amount of carbon. Preparation of composite materials or other polymer material, polyimide and its reinforced composite materials are rarely reported. Based on polyimide substrate materials with different properties have been synthesized, and dynamic covalent chemical reaction based on the preparation of calcium carbonate (CaCO_3) reinforced polyimide biomimetic composite materials, two zirconia (ZrO_2) reinforced polyimide nano composite materials and soft hard alternate polyimide biomimetic composite materials. The polyimide substrate material and three kinds of composites were studied and mechanical properties of basic physicochemical properties, thermal properties. This paper consists of detection Two different aldehydes (two of benzene formaldehyde and glutaraldehyde) and two ethylene amine three, three ethylene four amine was prepared by two different polyimide substrates, respectively containing two of benzene formaldehyde and glutaraldehyde containing PI-H PI-S. first, PI-H and PI-S have good resistance to water absorption of common organic solvent resistance and the rate of about 46%, while the performance of the other properties are different. But on the whole, PI-H and PI-S have some unique properties of polyimide materials: plastic heating, recycling, and self repairing properties. And two kinds of all the mechanical properties of polyimide materials can maintain a higher value, can compared with common plastic. The CaCO_3 particles with different proportion of added polyimide substrate powder, a series of polyimide biomimetic composites reinforced by CaCO_3 was prepared. The mechanical test results show that the bionic CaCO_3 reinforced polyimide composite material The tensile strength, toughness, mechanical properties, bending strength and impact strength relative to the polyimide substrate materials are greatly improved. The special CaCO_3 pointed out that the bionic reinforced polyimide composite material with good tensile strength and toughness, the amount of different mechanical properties reached the optimal value when the need to add CaCO_3 particles was also enhanced to make two bionic.CaCO_3 reinforced polyimide composites. At the same time, improved to a certain degree of addition of CaCO_3 particles of polyimide substrate material thermal stability. This paper also attempts to ZrO_2 nanoparticles with different proportion doped polyimide substrate material, by means of X ray diffraction (XRD) and Fourier transform infrared (FT-IR) results confirm a series of ZrO_2 reinforced poly.ZrO_2 imine nanometer composites reinforced polyimide nano composite material tensile strength, prepared toughness, impact strength, bending The strength, elongation and other mechanical properties of the polyimide substrate were compared with similar but significantly increased with the addition of CaCO_3 particles, polyimide nano composite material to different mechanical properties Zr content corresponding to the maximum value of O_2 nanoparticles enhanced ZrO_2 different. Different from the conventional inorganic organic composite materials, dosage of Zr O_2 reinforced polyimide nano composite material tensile strength and toughness under the same ZrO_2 can be increased at the same time. Similarly, added could improve the thermal stability of ZrO_2 nanoparticles but also on composite materials. In addition, this paper uses dynamic covalent chemistry imine metathesis reaction, two different hardness PI-H and PI-S polyimide substrate based on the simple method of preparation by pressing a series of hard and soft white polyimide biomimetic composite materials. In this paper, the preparation of polyimide composite bionic hard and soft white The material can achieve two kinds of base materials of PI-H and PI-S to any proportion of 100% from 0% mixed, and can produce synergistic effect. When the amount of PI-S is 25%, the friction coefficient of soft and hard alternated polyimide biomimetic composites, impact strength and tensile modulus were extreme. Special notes, hard and soft white biomimetic composite friction the corresponding coefficient of the extreme points of the addition of PI-S did not change with the change of friction speed, but as the load changes, that play a decisive role on the friction performance of composite hard and soft white conditions is the main load. Whether in the friction test, impact test or in-situ tensile test, hard and soft white polyimino bionic the composite materials exhibit all the characteristics of the combination of PI-H and PI-S of their respective properties. So when PI-S in proper proportion (25%) is added, hard and soft white polyimide composites of different bionic The mechanical properties, including friction coefficient, impact strength and tensile modulus were the optimal value, and is better than the two kinds of polyimide substrate material. The day after the preparation of composite polyimide based on reference effective and new methods, and also for the different components of polymer composite materials in proportion to achieve any ratio adjustment of 0-100% provides a new reference. At the same time, this paper presents a low price, simple preparation of polyimide reinforced composite method, provides a new idea for the preparation of composite materials based on polyimide, provides more possibilities for the development and application of polyimide materials.

【學位授予單位】：吉林大學
【學位級別】：博士
【學位授予年份】：2017
【分類號】：TQ317;TB33

【相似文獻】

相關期刊論文 前4條

1 ;仿生復合材料[J];化學工程師;1988年03期

2 陳斌,彭向和,范鏡泓;生物自然復合材料的結構特征及仿生復合材料的研究[J];復合材料學報;2000年03期

3 ;水剛度自適應彈性體粘土仿生復合材料[J];功能材料信息;2014年01期

4 王振林,閆玉華,萬濤;羥基磷灰石/膠原類骨仿生復合材料的制備及表征[J];復合材料學報;2005年02期

相關會議論文 前2條

1 劉彬;;泊松效應在生物/仿生復合材料中的作用(英文)[A];重慶大學2013復合材料力學研討會摘要集[C];2013年

2 王振林;閆玉華;萬濤;;類骨羥基磷灰石/膠原生物仿生復合材料的制備及表征[A];中國生物醫(yī)學工程學會第六次會員代表大會暨學術會議論文摘要匯編[C];2004年

相關博士學位論文 前2條

1 邵偉力;絲素納米纖維骨仿生復合材料的構建及應用[D];天津工業(yè)大學;2016年

2 張思;基于聚亞胺的仿生復合材料制備及性能研究[D];吉林大學;2017年

相關碩士學位論文 前3條

1 王艷;柞蠶絲絲素骨仿生復合材料的制備與研究[D];中原工學院;2011年

2 馬驍勇;三維打印貝殼仿生結構的力學性能研究[D];中國科學技術大學;2015年

3 楊建霞;冰模板法制備層狀多級孔仿生復合材料的研究[D];華中科技大學;2010年

，

本文編號：1434143