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</span><div id="k9lnvz3" class="searchbox"><div id="80pmtqc" class="searchLt"><div id="pstqn3w" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會</a></div><div id="3q8ovxz" class="clearfix searchWrap"><div id="shspm8w" class="searchInput"><input type="text" name="keywords" placeholder="請輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="l4nk3wy" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="yelsh8y" class="twoCol"><div id="v98jlxu" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_jlbzqj/">計(jì)量標(biāo)準(zhǔn)器具</a>?<a href="http://www.cdcfah.com/cp/third-jlbzqj_qtjlbzqj/">其他計(jì)量標(biāo)準(zhǔn)器具</a>?Prescott Watson硫化機(jī) 真誠推薦上海君宜化工供應(yīng)</p><div id="ntv8kh8" class="leftbox clearfix"><h1>Prescott Watson硫化機(jī) 真誠推薦上海君宜化工供應(yīng)</h1><div id="sxd4w7s" class="proBig"><div id="889yprt" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861296240235/7465367.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="vtlvxeb" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861296240235/7465367.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="84tprta" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>Prescott Watson硫化機(jī),Prescott</p><p><span>***更新：</span>2020-07-20 06:11:54</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="lphgnpr" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海君宜化工銷售中心（有限合伙）</a></p><p><span>聯(lián)系人：</span>蘇剛</p><p><span>郵箱: </span>sg@estrongchem.com</p><p><span>電話: </span>13524989551</p><p><span>傳真: </span>021_60823996 </p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-60826029</p><p><span>地址: </span>上海市浦東新區(qū)五星路676弄萬科御河10棟</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ey2f2w3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="nwoqxzg" class="box"><p><p> （應(yīng)力松弛簡介） </p> <p> 應(yīng)力松弛是指粘彈性材料在總應(yīng)變不變的條件下，由于內(nèi)部的粘性應(yīng)變（或粘塑性應(yīng)變）分量隨時(shí)間不斷增長，使回彈應(yīng)變分量隨時(shí)間逐漸降低，從而導(dǎo)致變形恢復(fù)力（回彈應(yīng)力）隨時(shí)間逐漸降低的現(xiàn)象。 </p> <p> 傳統(tǒng)之門尼粘度儀只提供門尼粘度值供加工之參考，但以現(xiàn)階段之加工要求這是不夠的，因?yàn)殚T尼粘度只是加熱之后橡膠的流動性，但是外力消失后之回復(fù)速度并無法得知，唯有透過應(yīng)力松弛曲線才得以更的控制加工物之尺寸。經(jīng)由實(shí)驗(yàn)證明有很多的合成物門尼粘度值一樣，但是加工之后尺寸仍不易控制，究其原因就是因?yàn)閼?yīng)力松弛之不同造成。 </p> <p> 門尼應(yīng)力松弛之定義有二種： </p> <p> 1）在門尼測試測量之后于同一試片上進(jìn)行的測試，是于測試完成轉(zhuǎn)子快速停止轉(zhuǎn)動后（0.1秒）一設(shè)定時(shí)間內(nèi)之門尼粘度輸出值之幕定律衰減，Prescott Watson硫化機(jī)。 </p> <p> 2）轉(zhuǎn)子快速停止轉(zhuǎn)動后30秒時(shí)所保持之門尼扭矩的百分讀數(shù)。 </p> <p> 其中提供的數(shù)據(jù)名詞解釋如下： </p> <p> a：應(yīng)力松弛斜率 </p> <p> A：應(yīng)力松弛測試開始之時(shí)間（t0）至結(jié)束之時(shí)間（tf）內(nèi)松弛曲線之投影面積，Prescott Watson硫化機(jī)，Prescott Watson硫化機(jī)。 </p> <p> k：為1s時(shí)之扭力值。 8、天然橡膠可以依據(jù)硫化儀測定的規(guī)范配方的后果來做分級。Prescott Watson硫化機(jī)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="Prescott Watson硫化機(jī),Prescott" src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861296240235/7465367.png"></div><p> （硫化反應(yīng)過程簡介）： </p> <p> 硫化反應(yīng)過程是化學(xué)反應(yīng)過程,它包含橡膠分子與硫化劑及其它配合劑之間發(fā)生的一系列化學(xué)反應(yīng)以及在形成網(wǎng)狀結(jié)構(gòu)時(shí)伴隨發(fā)生各種反應(yīng),在這眾多的反應(yīng)中,仍以橡膠分子與硫化劑之間的反應(yīng)為主,它是生成大分子網(wǎng)狀結(jié)構(gòu)的基本反應(yīng),對于大多數(shù)含有有機(jī)促進(jìn)劑(硫磺)的硫化體系的膠料來說,其硫化反應(yīng)歷程可大致如下: </p> <p> ***階段為誘導(dǎo)階段，在這個(gè)階段中首先是硫磺分子和促進(jìn)體系之間反應(yīng)生成一種活性更大的中間化合物 </p> <p> 第二階段進(jìn)一步引發(fā)橡膠分子鏈，行成可交聯(lián)的自由基（或離子）與橡膠分子鏈之間產(chǎn)生連鎖反應(yīng)，形成交聯(lián)鏈 </p> <p> 第三階段為網(wǎng)構(gòu)形成階段，在這一階段的前期交聯(lián)反應(yīng)已經(jīng)趨于完成，產(chǎn)生的交聯(lián)鏈發(fā)生重排和裂解等反應(yīng)，在這一階段的后期交聯(lián)反應(yīng)已基本停止，隨之而發(fā)生的是交聯(lián)重排和裂解等反應(yīng)，***得到網(wǎng)構(gòu)穩(wěn)定的硫化膠。普萊斯科 Prescott服務(wù)為先50、門尼粘度計(jì)反應(yīng)橡膠加工性能的好壞和分子量高低及分布范圍寬窄。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="Prescott Watson硫化機(jī),Prescott" src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861269248047/3647148.png"></div><p> （硫化儀工作原理簡介） </p> <p> 橡膠硫化時(shí)是在一定溫度、壓力和時(shí)間條件下分子鏈發(fā)生交聯(lián)，形成立體的網(wǎng)狀結(jié)構(gòu)，從而制約分子鏈相互一棟，使材料塑性消失，彈性增強(qiáng)，模量增大，從而改變材料的物理性能。 </p> <p> 為使膠料達(dá)到要求的性能，必須確定比較好的硫化條件。溫度、壓力、時(shí)間是膠料硫化的3個(gè)要素。硫化儀是對膠料硫化過程特性變化進(jìn)行連續(xù)測試的儀器總稱，它可表征膠料硫化全過程特性，測得硫化曲線和硫化特性參數(shù)。 </p> <p> 硫化儀測試具有連續(xù)、快捷、精確、方便和省料等優(yōu)點(diǎn)，其應(yīng)用***，并得到不斷改進(jìn)和完善，自動化程度和測控精度不斷提高。 </p> <p> 在膠料硫化過程中，隨著硫化時(shí)間延長，膠料的交聯(lián)程度增大，橡膠分子的移動性降低，膠料的模量增大，膠料在一定應(yīng)力下產(chǎn)生的應(yīng)變減小或產(chǎn)生一定應(yīng)變所需要的應(yīng)力增大，也就是說通過測定一定應(yīng)力下膠料產(chǎn)生的應(yīng)變或膠料產(chǎn)生一定的應(yīng)變所需要的應(yīng)力可反映膠料模量，從而得出膠料的交聯(lián)程度。硫化儀根據(jù)膠料的剪切應(yīng)力與交聯(lián)密度成正比或剪切應(yīng)變與交聯(lián)密度成反比的基本原理來測定膠料硫化特性。 </p><p> MDR工作原理： </p> <p> MDR配備的是無轉(zhuǎn)子雙錐形模板組件，上下模通過電加熱獲得精確的溫度控制效果，下模板以1.67HZ頻率，0.5°、1°、3°的振幅進(jìn)行振蕩，上模板固定并精確測量整個(gè)過程的扭矩。測試進(jìn)行時(shí)不同模溫下樣品施加的軸向載荷可以通過壓力傳感器獲得。 </p> <p> MDR不使用轉(zhuǎn)子，試樣截面較薄，試樣中的溫度均勻程度要更好?？砂丫€性剪切型硫化儀的傳熱快和振蕩圓盤式硫化儀的良好的重現(xiàn)性結(jié)合起來： </p> <p> 1）對實(shí)際的質(zhì)量差別更加敏感， </p> <p> 2）能測量膠樣的動態(tài)性能（ODR無法測量） </p> <p> 3）更快速的溫度恢復(fù)，能在較短的時(shí)間內(nèi)提供硫化信息 45、使用門尼粘度儀測試的門尼粘度ML(1+4)100℃值是控制天然橡膠加工質(zhì)量的一個(gè)標(biāo)準(zhǔn).</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="Prescott Watson硫化機(jī),Prescott" src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861261240235/3303378.png"></div><p style="text-indent:25px">門尼粘度試驗(yàn)機(jī)一直是對生膠和混煉膠進(jìn)行表征的*有zui常用的實(shí)驗(yàn)，據(jù)有關(guān)數(shù)據(jù)計(jì)算表明，門尼粘度與生膠的平均分子量有著直接關(guān)系。用門尼粘度實(shí)驗(yàn)機(jī)測出的相對數(shù)據(jù)是操控安穩(wěn)性的一個(gè)手法，只需曲線走向，轉(zhuǎn)矩改變不多，那么膠料的安穩(wěn)性就能確保。蘇州力高門尼粘度儀用于測定未合作的或已合作的未硫化天然橡膠，組成橡膠及再生橡膠的粘度。該設(shè)備具有升溫快，溫度及數(shù)據(jù)安穩(wěn)性好的特性。具有主動校準(zhǔn)設(shè)備，每次實(shí)驗(yàn)主動進(jìn)行數(shù)據(jù)校準(zhǔn)。17、有轉(zhuǎn)子硫化儀的擺角應(yīng)為1°或3°；無轉(zhuǎn)子硫化儀的擺動角度應(yīng)為1°或0.5°.普萊斯科 Prescott服務(wù)為先</p><p style="text-indent:25px">56、門尼轉(zhuǎn)子應(yīng)選用熱變形小，經(jīng)處理后硬度不低于HRC60、五鍍層的鋼材制成.Prescott Watson硫化機(jī)</p><p> （硫化儀在橡膠測試中的應(yīng)用） </p> <p> 凡已添加了硫化體系的橡膠，始終處于硫化進(jìn)行狀態(tài)的過程之中。無論從技術(shù)還是工藝的角度，技術(shù)人員都想找到**理想的硫化狀態(tài)。如果偏差則會導(dǎo)致欠硫或過硫，意味著硫化錯(cuò)過了比較好時(shí)機(jī)。過去，配方設(shè)計(jì)人員盡管明白掌握比較好硫化的重要性，但卻沒有合適的方法和手段來確定，只能定出幾個(gè)時(shí)間點(diǎn)，測定每個(gè)時(shí)間點(diǎn)上的某項(xiàng)性能（通常是定伸應(yīng)力，因?yàn)樗苯臃从辰宦?lián)密度），然后，把各個(gè)點(diǎn)連接成曲線，從中找出比較高（比較好）點(diǎn)所對應(yīng)的硫化時(shí)間。此方法符合硫化原理，但定點(diǎn)太多，費(fèi)時(shí)耗工，而定的太少，又怕準(zhǔn)確性不夠。自硫化儀出現(xiàn)后，**簡化了硫化曲線繪制選點(diǎn)，計(jì)算和點(diǎn)繪的工作量。因?yàn)?，每批膠料都有特定的硫化曲線，而且曲線上的每一個(gè)點(diǎn)都**相應(yīng)的性能值。曲線本身就是硫化過程扭矩的軌跡，是連續(xù)的，而不是靠幾個(gè)孤立點(diǎn)來連接，其準(zhǔn)確性能也是無可置疑的。曲線不*如實(shí)的呈現(xiàn)了整個(gè)硫化過程的走向，而且能一目了然的找到正硫化點(diǎn)的位置。所以，通過使用硫化儀，可連續(xù)、動態(tài)的提供膠料硫化狀態(tài)的全貌，對確定生產(chǎn)工藝具有重要意義。 Prescott Watson硫化機(jī)</p><p style="text-indent:25px">上海君宜化工銷售中心（有限合伙）創(chuàng)建于2013-11-19，注冊資金 2000-3000萬元，是一家專注化工原料及產(chǎn)品（除危險(xiǎn)化學(xué)品，監(jiān)控化學(xué)品，煙花爆竹，民用物品，易制毒化學(xué)品），橡塑制品，輪胎，五金交電，日用百貨，化妝品，健身器材，儀器儀表，機(jī)械設(shè)備，機(jī)電設(shè)備，計(jì)算機(jī)，軟件及輔助設(shè)備銷售，從事化工，健身器材科技領(lǐng)域內(nèi)的技術(shù)開發(fā)，技術(shù)咨詢，技術(shù)服務(wù)，技術(shù)轉(zhuǎn)讓，電器工程安裝，自動化控制設(shè)備安裝，調(diào)試，維修，機(jī)電安裝建設(shè)工程施工，工程自動化設(shè)備安裝維修及，工業(yè)自動化控制系統(tǒng)工程，商務(wù)信息咨詢。的公司。公司目前擁有高技術(shù)人才51~100人人，以不斷增強(qiáng)企業(yè)核心競爭力，加快企業(yè)技術(shù)創(chuàng)新，實(shí)現(xiàn)穩(wěn)健生產(chǎn)經(jīng)營。誠實(shí)、守信是對企業(yè)的經(jīng)營要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***的[ "化工原料及產(chǎn)品", "橡膠，炭黑", "色母粒，彈性體" ]。公司憑著雄厚的技術(shù)力量、飽滿的工作態(tài)度、扎實(shí)的工作作風(fēng)、良好的職業(yè)道德，樹立了優(yōu)良的[ "化工原料及產(chǎn)品", "橡膠，炭黑", "色母粒，彈性體" ]形象，贏得了社會各界的信任和認(rèn)可。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/657523.html</p></div></div></div></div></div><div id="bkc83f2" class="page-right twoColRt"><div id="qpmerif" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kzwy283" class="recomPic likePro"><a 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