本文關(guān)鍵詞：杜仲膠基形狀記憶復(fù)合材料的制備與性能研究　出處：《青島科技大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 杜仲膠 形狀記憶 門尼粘度 填料 共混

【摘要】：形狀記憶聚合物是一種刺激響應(yīng)型智能材料,它們可以“記憶”一種或多種預(yù)先設(shè)定的形狀,在受到熱、電、磁、光、濕度或化學(xué)刺激等外界刺激時(shí),材料能夠發(fā)生較大的可回復(fù)變形。形狀記憶聚合物具有可回復(fù)形變量大,密度低,加工成型容易,性能可調(diào)節(jié)范圍大,回復(fù)行為可控性強(qiáng),成本低等優(yōu)點(diǎn),被廣泛應(yīng)用于生物醫(yī)用材料、航天航空、汽車、紡織以及自修復(fù)等領(lǐng)域。杜仲膠便是最典型的一種形狀記憶聚合物,以其為基體的新材料開發(fā)應(yīng)用具有很高的戰(zhàn)略意義。本文以杜仲橡膠為基體材料制備了一系列熱致型形狀記憶復(fù)合材料,并研究了材料的內(nèi)部結(jié)構(gòu)、組成與物理機(jī)械性能、形狀記憶性能之間的關(guān)系。本文的主要研究?jī)?nèi)容如下:首先,我們研究了門尼粘度對(duì)杜仲膠材料物理機(jī)械性能、形狀記憶性能的影響。結(jié)果表明:高門尼粘度的杜仲膠與低門尼粘度的杜仲膠相比,在硫化方面,高門尼粘度的杜仲膠的焦燒時(shí)間和硫化時(shí)間明顯較大,最小轉(zhuǎn)矩和最大轉(zhuǎn)矩也明顯提高,這說明高門尼材料的加工安全性比低門尼的好,但硫化時(shí)間較長(zhǎng);在物理機(jī)械性能方面,隨硫黃用量的增加,高、低門尼材料的撕裂強(qiáng)度、定伸應(yīng)力、扯斷伸長(zhǎng)率的變化趨勢(shì)類似,但拉伸強(qiáng)度變化正好相反;在熱性能方面,升、降溫曲線規(guī)律一致,但從材料的結(jié)晶、熔融焓來(lái)看,低門尼材料的結(jié)晶度要好;在形狀記憶方面,高門尼粘度材料的形狀回復(fù)率最高可達(dá)98.9%,而低門尼粘度材料的形狀回復(fù)率最高才達(dá)到81.4%。其次,我們研究了填料的種類和用量對(duì)杜仲膠材料物理機(jī)械性能、形狀記憶性能的影響,并研究了復(fù)合材料的單向和雙向形狀記憶行為。實(shí)驗(yàn)表明:隨甲殼素用量的增大,拉伸強(qiáng)度、撕裂強(qiáng)度、扯斷伸長(zhǎng)率和形狀回復(fù)率都有所降低;適當(dāng)?shù)募尤胩蓟杌蛱亢谔盍夏苊黠@提高TPI材料的力學(xué)性能和形狀記憶性能,加入碳化硅為10份時(shí)形狀回復(fù)率可達(dá)到95.6%,加入炭黑為5份時(shí)形狀回復(fù)率可達(dá)到90.4%。最后,我們采用共混的方法制備杜仲膠/聚丁二酸丁二醇酯(TPI/PBS)形狀記憶復(fù)合材料,我們研究了杜仲膠/聚丁二酸丁二醇酯共混比以及相容劑的加入對(duì)復(fù)合材料力學(xué)性能、形狀記憶性能的影響。結(jié)果表明:在共混比方面,隨PBS用量的增大,復(fù)合材料的力學(xué)性能有逐漸減小的趨勢(shì),熱刺激響應(yīng)溫度逐漸減小,材料的形狀回復(fù)率先增加后降低,當(dāng)共混比為90/10時(shí),形狀回復(fù)率最大,達(dá)到92.5%;在硫化體系方面,研究了硫黃(S)、過氧化物(DCP)、硫黃/過氧化物(S/DCP)并用對(duì)TPI/PBS形狀記憶復(fù)合材料性能的影響,結(jié)果表明:隨硫化劑用量的增大,材料的力學(xué)性能都有逐漸減小的趨勢(shì),但硫黃/過氧化物并用作硫化劑的體系的拉伸強(qiáng)度、撕裂強(qiáng)度、定伸應(yīng)力明顯比其他兩個(gè)體系好,拉伸強(qiáng)度提高了1-2MPa,撕裂強(qiáng)度提高了1-4KN/m,定伸應(yīng)力也提高了1-3MPa左右;從形狀記憶性能來(lái)看,在硫黃作硫化劑的復(fù)合材料中,當(dāng)硫黃用量為1.6phr時(shí),復(fù)合材料的形狀記憶性能最佳,在過氧化物作硫化劑的復(fù)合材料中,當(dāng)DCP用量為1.2phr時(shí),材料的形狀記憶性能最佳,在硫黃/過氧化物并用作硫化劑的復(fù)合材料中,當(dāng)DCP用量為0.4phr時(shí),復(fù)合材料的形狀記憶性能最佳。
[Abstract]:The shape memory polymer is a stimulus response type of smart materials, they can be "memory" of one or more predetermined shape by heat, electricity, magnetism, light, humidity or chemical stimulation of external stimuli, the material can occur large recoverable deformation. The shape memory polymer has the recovery of large deformation. Low density, easy processing, performance can be adjusted in a wide range, recovery behavior of strong controllability and low cost advantages, has been widely used in biomedical materials, aerospace, automotive, textile and other fields. The self repairing of Eucommia ulmoides gum is a kind of typical shape memory polymers, the new materials development and application of matrix has a high strategic significance. This paper prepared a series of thermally induced shape memory composite materials with eucommia rubber is studied and the internal structure of materials, and the physical and mechanical properties, shape memory The relation between energy. The main research contents of this paper are as follows: firstly, we study the Mooney viscosity on the mechanical performance of Eucommia rubber material physical properties, shape memory effect. The results showed that: compared with gutta percha gutta and low Mooney viscosity of high Mooney viscosity, curing, high Mooney viscosity of gutta percha and scorch time the curing time is relatively obvious, the minimum torque and the maximum torque is obviously improved, indicating that the processing safety of high Mooney material than low Mooney good, but the curing time longer; in the physical and mechanical properties, with the increase of amount of sulfur, high tear strength, low Mooney material, tensile stress, the change trend of elongation similar, but the tensile strength variation is on the contrary; in terms of thermal properties, rise, cooling curve, but the material from the crystallization, melting enthalpy, low Mooney material crystallinity in better shape memory; The shape of the material, high Mooney viscosity recovery rate up to 98.9%, while the low Mooney viscosity material shape recovery rate was the highest to 81.4%.. Secondly, we study on the mechanical properties of rubber materials physics of Eucommia type and amount of filler, influence the shape memory properties, and the research of composite unidirectional and bidirectional shape memory behavior. The experimental results show that with increasing chitin dosage of tensile strength, tear strength, elongation and shape recovery rate is reduced; amount of silicon carbide or carbon black filler can improve the mechanical properties and shape memory properties of TPI materials with silicon carbide, 10 was the shape recovery rate can reach 95.6%, the addition of carbon black was 5 phr the shape recovery rate can reach 90.4%.. Finally, we use the method of blending preparation of Eucommia ulmoides gum / poly butylene succinate (TPI/PBS) shape memory composite materials, we studied the Du Secondary glue / polybutylene succinate blend ratio and compatibilizer on properties of composite material mechanics, influence the shape memory properties. The results showed that: in the blend ratio, with the increase of PBS content, the mechanical properties of the composites has a gradually decreasing trend, Tottenham response temperature decreases, the shape of the material response the first increased and then decreased, when the blend ratio is 90/10, the shape recovery rate is the largest, reaching 92.5%; in the curing system, the influence of sulfur (S), peroxidase (DCP), peroxidase (S/DCP) and sulfur / write memory effect, the properties of the composite materials of TPI/PBS shape results show that with increasing the amount of curing agent that has gradually decreased the mechanical properties of the material, but the sulfur / peroxide and used as vulcanizing agent system, tensile strength, tear strength, tensile stress was significantly better than the other two systems, the tensile strength increased 1-2MPa, tear Improve the strength of 1-4KN/m, tensile stress also increased about 1-3MPa; from the point of view of shape memory properties, composite curing agent in sulfur, when the sulfur amount is 1.6phr, the composite shape memory performance, as a composite material in the peroxide vulcanizing agent, when the content of DCP is 1.2phr, material the shape memory performance is the best in the sulfur / peroxide and used as curing agent in composite materials, when the dosage of DCP was 0.4phr, the composite shape memory performance is the best.

【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TB381

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