本文選題：超聲波　切入點(diǎn)：再生機(jī)理　出處：《青島科技大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：我國(guó)橡膠資源匱乏,將再生膠作為廢橡膠循環(huán)利用的主體,可代替原膠,彌補(bǔ)我國(guó)橡膠資源不足,但廢橡膠再生技術(shù)的研發(fā)相對(duì)滯后,傳統(tǒng)再生技術(shù)的高污染、高能耗和產(chǎn)品環(huán)保監(jiān)測(cè)不達(dá)標(biāo)以及再生性能不佳,嚴(yán)重制約我國(guó)再生膠工業(yè)發(fā)展。為了解決這些難題,實(shí)現(xiàn)廢橡膠高效、環(huán)保的高值化再生,本文在深入研究現(xiàn)有廢橡膠再生技術(shù)的機(jī)理和應(yīng)用的基礎(chǔ)上,通過(guò)查閱大量資料和進(jìn)行大量的實(shí)驗(yàn)研究,提出了將機(jī)械剪切與超聲波相結(jié)合的廢橡膠再生技術(shù)。本文對(duì)超聲波與機(jī)械法再生機(jī)理進(jìn)行分析,研發(fā)了超聲波與機(jī)械法再生實(shí)驗(yàn)機(jī)臺(tái)及核心部件、再生工藝及再生配合劑配方,并進(jìn)行了大量實(shí)驗(yàn)。具體工作如下:1.在對(duì)廢橡膠現(xiàn)有再生機(jī)理深入研究的基礎(chǔ)上,深入研究了超聲波與機(jī)械法再生機(jī)理。詳實(shí)分析了機(jī)械解聯(lián)作用原理、超聲波能對(duì)廢橡膠分子鏈的作用機(jī)理,為超聲波與機(jī)械法結(jié)合的研發(fā)思路的提供了理論支持。2.設(shè)計(jì)了超聲波與機(jī)械解聯(lián)相結(jié)合的再生技術(shù)研究方案,研制了超聲波與機(jī)械法再生實(shí)驗(yàn)機(jī)臺(tái)和適用于廢橡膠再生的新型六棱剪切轉(zhuǎn)子。通過(guò)超聲波發(fā)生系統(tǒng)與機(jī)械解聯(lián)系統(tǒng)的上下頂栓有機(jī)結(jié)合,在保證良好機(jī)械解聯(lián)性能的同時(shí),使超聲波的波能作用可以高效的傳遞到密煉室當(dāng)中,完成機(jī)械解聯(lián)與超聲波的結(jié)合,使再生效率大幅提高。3.采用POLYFLOW有限元分析軟件對(duì)廢橡膠在超聲波與機(jī)械法再生過(guò)程中的膠料流動(dòng)特征進(jìn)行模擬分析,給出了壓力場(chǎng)、速度場(chǎng)、速度矢量場(chǎng)、剪切應(yīng)力場(chǎng)、粘度場(chǎng)以及混合指數(shù)模擬分析結(jié)果。模擬結(jié)果表明,所研發(fā)裝備具有強(qiáng)剪切和高分散混合作用,機(jī)械剪切解聯(lián)效果優(yōu)異,通過(guò)模擬分析,進(jìn)一步優(yōu)化機(jī)臺(tái)設(shè)計(jì)。4.深入分析了多種再生配合劑對(duì)廢橡膠再生的作用機(jī)理,進(jìn)行了大量的實(shí)驗(yàn)探究,確定了適于超聲波與機(jī)械法再生的配合劑種類和添加量。并使用所研制的再生配合劑,對(duì)超聲波與機(jī)械法再生的工藝參數(shù)進(jìn)行實(shí)驗(yàn)研究,并確定了最佳工藝參數(shù)。開(kāi)展了采用本文所研發(fā)的再生技術(shù)制備的再生膠與市售和工廠采用優(yōu)質(zhì)再生膠的共混性能對(duì)比實(shí)驗(yàn)研究,證實(shí)了本文再生技術(shù)推廣應(yīng)用價(jià)值。5.通過(guò)檢測(cè)所制備再生膠的溶膠含量與交聯(lián)密度,采用Horik理論公式,證實(shí)了超聲波與機(jī)械剪切相配合時(shí)廢橡膠鉸鏈鍵可以選擇性斷鏈,并驗(yàn)證了超聲波作用時(shí)間與超聲波功率對(duì)斷鍵類型的影響。本文的理論分析和實(shí)驗(yàn)研究,將為廢橡膠的再生指出了新的研究方向,為實(shí)現(xiàn)廢橡膠高效、低成本、低污染的再生提供了可能,為我國(guó)再生膠行業(yè)的設(shè)備發(fā)展、技術(shù)更新起到了促進(jìn)作用,對(duì)于將超聲波技術(shù)運(yùn)用到的工業(yè)化應(yīng)用中有著重要的指導(dǎo)意義。
[Abstract]:Because of the shortage of rubber resources in China, reclaimed rubber as the main body of waste rubber recycling can replace raw rubber and make up for the shortage of rubber resources in our country. However, the research and development of waste rubber regeneration technology is relatively lagging, and the high pollution of traditional recycling technology. High energy consumption and product environmental protection monitoring are not up to the standard and the regeneration performance is not good, which seriously restricts the development of China's reclaimed rubber industry. In order to solve these problems, the high value recycling of waste rubber with high efficiency and environmental protection can be realized. On the basis of deeply studying the mechanism and application of the existing waste rubber regeneration technology, this paper makes a great deal of research by consulting a lot of data and carrying out a lot of experimental research. In this paper, the mechanism of ultrasonic and mechanical regeneration is analyzed, and the experimental machine and core components of ultrasonic and mechanical regeneration are developed. A lot of experiments were carried out on the regeneration process and the formula of the regenerative compounding agent. The specific work is as follows: 1. On the basis of the deep research on the existing regeneration mechanism of waste rubber, The mechanism of ultrasonic and mechanical regeneration was studied in depth. The mechanism of mechanical dissociation was analyzed in detail, and the mechanism of ultrasonic action on the molecular chain of waste rubber was analyzed in detail. It provides theoretical support for the research and development of the combination of ultrasonic and mechanical method. 2. The research scheme of regeneration technology combined with ultrasonic and mechanical decomposition is designed. An experimental machine for ultrasonic and mechanical regeneration and a new type of hexagonal shearing rotor suitable for waste rubber regeneration were developed. By combining the ultrasonic generating system with the top and bottom plug of the mechanical decoupling system, the good mechanical uncoupling performance was ensured at the same time. So that the wave energy of ultrasonic wave can be transferred to the chamber efficiently, and the combination of mechanical uncoupling and ultrasonic wave can be completed. The flow characteristics of waste rubber during ultrasonic and mechanical regeneration are simulated and analyzed by using POLYFLOW finite element analysis software, and the pressure field, velocity field, velocity vector field and shear stress field are given. The simulation results of viscosity field and mixing index show that the developed equipment has strong shear and high dispersion mixing and excellent mechanical shear uncoupling effect. Further optimize the design of the machine. 4. The mechanism of the regeneration of waste rubber was analyzed, and a large number of experiments were carried out. The types and the amount of the compounding agents suitable for ultrasonic and mechanical regeneration were determined, and the technological parameters of ultrasonic and mechanical regeneration were experimentally studied by using the regenerative coordination agent developed by the paper. And the optimum technological parameters were determined. The comparative experimental study on the blending properties of the reclaimed rubber prepared by the regeneration technology developed in this paper and the high quality reclaimed rubber prepared in the market and in the factory was carried out. It is proved that the regeneration technology in this paper can be popularized and applied. 5. By detecting the sol content and crosslinking density of the reclaimed rubber, using the Horik formula, it is proved that the hinge bond of waste rubber can break the chain selectively when the ultrasonic wave and mechanical shear are combined. The influence of ultrasonic action time and ultrasonic power on broken bond type is verified. The theoretical analysis and experimental study in this paper will point out a new research direction for the regeneration of waste rubber, in order to realize the high efficiency and low cost of waste rubber. The low pollution regeneration provides the possibility for the equipment development and the technological renewal of the reclaimed rubber industry in China. It has important guiding significance for the application of ultrasonic technology in the industrial application.
【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】：2016
【分類號(hào)】：TQ335;X705

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