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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>開放式硫變機(jī) Prescott歡迎咨詢,Prescott</p><p><span>***更新：</span>2020-06-16 05:12:43</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="btzgnev" 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="pcypgho" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="tg8zaxy" class="box"><p><p> （硫化儀流變性能測試簡介） </p> <p> 橡膠加工除硫化工序外，還有塑煉、混煉、壓延、擠出，開放式硫變機(jī) Prescott歡迎咨詢、成型、模壓、注壓等多種工序，這些工序中膠料在外力作用下產(chǎn)生流動或變形，橡膠分子間未交聯(lián)，這種現(xiàn)象稱為流變。膠料的流變性能也是橡膠加工過程中重要的工藝特性，其主要的工藝條件是加工溫度和剪切速率。 </p> <p> 硫化儀也可用于測定膠料硫化前的流變性能。一般硫化儀只能有1-2種剪切速率，不能滿足上述加工工序的多種剪切速率要求，同時(shí)其測量值的參考性有限。為此，以測試流變性能為目的的剪切式多功能流變儀得以產(chǎn)生并運(yùn)用。橡膠加工分析儀的模腔和兩模間的相對運(yùn)動形式與無轉(zhuǎn)子硫化儀無差異，但振動頻率和振幅范圍更大，測量和可輸出的參數(shù)更多（彈性轉(zhuǎn)矩，開放式硫變機(jī) Prescott歡迎咨詢、粘性轉(zhuǎn)矩、復(fù)合轉(zhuǎn)矩、彈性剪切模量等），它可根據(jù)實(shí)驗(yàn)條件設(shè)定溫度和剪切速率，可進(jìn)行頻率掃描、應(yīng)變掃描、溫度掃描，通過應(yīng)變、頻率和溫度變化表征膠料在密煉機(jī)、擠出機(jī)中流動的情況，辨別膠料加工性能、生熱和老化性能差異，模量不同速度下輪胎膠料的應(yīng)變性能，推測輪胎行駛狀況，開放式硫變機(jī) Prescott歡迎咨詢。 30、tan是描述膠料粘性模量與彈性模量關(guān)系的基本參數(shù)。開放式硫變機(jī) Prescott歡迎咨詢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="開放式硫變機(jī) Prescott歡迎咨詢,Prescott" src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861295898438/9461773.png"></div><p> （門尼焦燒測試簡介） </p> <p> 門尼焦燒、定義,焦燒是未硫化膠在工藝過程中產(chǎn)生早期硫化即由線型分子開始出現(xiàn)交聯(lián)的現(xiàn)象。衡量早期硫化速度的快慢,是用焦燒時(shí)間來度量的。由于橡膠具有熱累積效應(yīng),故實(shí)際焦燒時(shí)間包括操作焦燒時(shí)間和剩余焦燒時(shí)間兩部分。操作焦燒時(shí)間是指橡膠加工過程中由于熱累積效應(yīng)所消耗掉的焦燒時(shí)間,它取決于加工條件，如橡膠混煉、熱煉及壓延、壓出等條件。 </p> <p> 門尼焦燒測試的規(guī)定： </p> <p> 根據(jù)國標(biāo)GB1233規(guī)定，當(dāng)用大轉(zhuǎn)子轉(zhuǎn)動門尼粘度值下降到比較低點(diǎn)后再轉(zhuǎn)入上升35個門尼粘度值的時(shí)間T35 </p> <p> 硫化**△T30=T35-T5（用大轉(zhuǎn)子試驗(yàn)時(shí)） </p> <p> 硫化**可以表征硫化速度，硫化速度小，表示硫化速度快，硫化速度大，表示硫化速度慢。 Prescott物理實(shí)驗(yàn)室15、膠料硫化過程是一個在一定溫度和壓力作用下受力的過程。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="開放式硫變機(jī) Prescott歡迎咨詢,Prescott" src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861261240235/3303378.png"></div><p> 充氣的設(shè)置： </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 加壓的時(shí)機(jī)：對應(yīng)著抽空時(shí)間，因?yàn)閷τ谧詣舆\(yùn)行的層壓機(jī)來說抽真空后馬上對應(yīng)著上充氣，所以抽空時(shí)間對應(yīng)著加壓時(shí)機(jī)。加壓過早，EVA流動性還很好，容易使電池片位移，加壓過晚，交聯(lián)度已經(jīng)很高，對于EVA的增大密度作用不大。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 加壓的大?。簤毫Φ拇笮?yīng)著充氣時(shí)間的長短，充氣時(shí)間越長，壓力越大，可能導(dǎo)致電池片被壓碎，也容易導(dǎo)致EVA流動，造成太陽電池位移。壓力太小，對去除殘存的氣泡作用不大，EVA與TPT、EVA與玻璃之間的粘合力比較小。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 層壓時(shí)間：層壓時(shí)間主要關(guān)系到EVA***的交聯(lián)度。交聯(lián)度的測定由專門的方法，但是在設(shè)置層壓時(shí)間時(shí)可以參考Tc90. </p> <p> <br /> </p><p> （門尼測試需注意事項(xiàng)） </p> <p> 1、由于門尼粘度儀有二支轉(zhuǎn)子，及轉(zhuǎn)子可取出，所以當(dāng)更換轉(zhuǎn)子或轉(zhuǎn)子置放于機(jī)器外部時(shí)間較長時(shí)，于測試前需置入模內(nèi)預(yù)熱，以免影響測試結(jié)果。 </p> <p> 2、門尼粘度儀測試時(shí)需注意溫度是否穩(wěn)定。 </p> <p> 3、由于模腔較大，需有足夠的樣品可以充滿模腔。不同的模腔表面花紋會影響測試結(jié)果，故在做比對時(shí)需確定模腔表面花紋是否相同。 </p> <p> 4、當(dāng)轉(zhuǎn)子花紋模糊時(shí)需予更換，以免影響測試結(jié)果。轉(zhuǎn)子高度需調(diào)整于適當(dāng)高度位置，即于正中間位置。 </p> <p> 5、合模力需大于11.5kN，所以要注意壓縮空氣的供應(yīng)是否足夠。 </p> <p> 6、待測試樣需保存于標(biāo)準(zhǔn)規(guī)定環(huán)境中。剛混練出來，甚至還有高于常溫的溫度的混練膠不可直接測試。當(dāng)試片太薄時(shí)可堆棧幾塊，直至達(dá)到要求厚度止。 </p> <p> 6、門尼粘度儀密封圈需定期更新，以確保膠料不滲入，及不影響測試結(jié)果，當(dāng)密封圈損壞時(shí)則需即刻更新。 </p> <p> 7、門尼粘度儀需要定期校正，且需要定期的校驗(yàn)，以確保測試結(jié)果的正確性。 </p> <p> 8、由于未硫化橡膠容易沾黏，需隨時(shí)注意門尼粘度儀轉(zhuǎn)子及模具保持干凈，當(dāng)轉(zhuǎn)子或模腔表面有污染時(shí)，需注意不可用太硬的金屬去刮模腔及轉(zhuǎn)子表面，以免受損，可用銅刷、離型膠或置入可硫化的混練膠，然后將膠料加溫硫化將污染物粘掉。 51、門尼粘度計(jì)的基本結(jié)構(gòu)就是模腔和轉(zhuǎn)子.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="開放式硫變機(jī) Prescott歡迎咨詢,Prescott" src="https://tyunfile.71360.com/WaterMark/UploadFile/junyi/637211861296650391/5790067.png"></div><p> （門尼粘度計(jì)簡介） </p> <p> 門尼粘度計(jì)是用來測定生膠或混煉膠之門尼粘度的儀器，使用門尼粘度計(jì)測試的門尼粘度ML100(1+4)值是控制天然橡膠加工質(zhì)量的一個標(biāo)準(zhǔn)，是分子量大小的定性概念。門尼粘度曲線的高低轉(zhuǎn)矩，測定橡膠膠料的可塑性，是測橡膠膠料硫化過程中的一個相對值。其測試原理是在一定的溫度、時(shí)間和壓力下，測量試樣對轉(zhuǎn)子轉(zhuǎn)動所產(chǎn)生的剪切阻力，以扭矩大小的不同來表示膠料可塑度的大小。用門尼粘度測試儀測出來的相對值。是控制穩(wěn)定性的一個手段。只要曲線走向、轉(zhuǎn)矩變化不多。那么膠料的穩(wěn)定性就能保證。 </p> <p> 通常提供了三種測定數(shù)據(jù)，一是門尼粘度的測定，二為應(yīng)力松弛特性的測定，三為焦燒時(shí)間的測定。 </p> <p> 高精度傳感器、控制系統(tǒng)、旋轉(zhuǎn)系統(tǒng)、控溫系統(tǒng)、數(shù)據(jù)傳輸方式、顯示方式、轉(zhuǎn)子、測控方式等均是門尼粘度計(jì)的主要技術(shù)指標(biāo)。 41、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.開放式硫變機(jī) Prescott歡迎咨詢</p><p style="text-indent:25px">18、無轉(zhuǎn)子硫化儀測得的硫化曲線***地用于原材料和配方的研究,為加工生產(chǎn)提供數(shù)據(jù).開放式硫變機(jī) Prescott歡迎咨詢</p><p> （門尼模腔構(gòu)造簡介） </p> <p> 模腔內(nèi)部花紋目前有二種，這兩種方式目前都有人使用，一種為格子狀（Serrated）一種為放射狀（Radial Grooved），格子狀日系設(shè)備用的比較多，但其它國家則是放射狀用的較多，一般而言花紋會影響扭力，由于模子結(jié)構(gòu)也可能會有不同，模腔溫度也會有些許不同，對測試結(jié)果也會有所影響，所以要比對數(shù)據(jù)時(shí)也要注意到所使用的花紋的型式。新式的門尼粘度儀由于結(jié)構(gòu)設(shè)計(jì)的改善及控制技術(shù)的進(jìn)步，回溫速度較快，且升溫時(shí)溫度超越設(shè)定值也很小，約0.3℃，可更精確的控制溫度，所量測得出的門尼值也更精確，但是相對的測試結(jié)果也會和舊式粘度儀的測試結(jié)果會有所不同。 </p> <p> 模腔的上、下模體應(yīng)選用熱變形小、經(jīng)處理后硬度不低于HRC60、無鍍層的鋼材制成。為了獲得良好的導(dǎo)熱性能，每個模體比較好用一塊材料制成。表面上應(yīng)制出徑向V型槽，間隔為20°。上模體的V槽應(yīng)從直徑47mm處外圓延伸至直徑7mm的內(nèi)圓處，下模體的V型槽應(yīng)從直徑47mm處延伸至距離中心孔1.5mm圓周處。各槽道角度為90°，槽面寬度為1.0mm（偏差0.1mm）開放式硫變機(jī) Prescott歡迎咨詢</p><p style="text-indent:25px">上海君宜化工銷售中心（有限合伙）創(chuàng)立于2013-11-19，是一家貿(mào)易型公司。上海君宜化工致力于為客戶提供質(zhì)量的[ "化工原料及產(chǎn)品", "橡膠，炭黑", "色母粒，彈性體" ]，一切以用戶需求為中心,深受廣大客戶的歡迎。公司將不斷增強(qiáng)企業(yè)核心競爭力，努力學(xué)習(xí)行業(yè)先進(jìn)知識，遵守行業(yè)規(guī)范，植根于橡塑行業(yè)的發(fā)展。公司自成立以來發(fā)展迅速，業(yè)務(wù)不斷發(fā)展壯大，年?duì)I業(yè)額度達(dá)到1億元以上，未來我們將不斷進(jìn)行創(chuàng)新和改進(jìn)，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: 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