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src="https://tyunfile.71360.com/UploadFile/szjingsumi/637381781527958985/5347665.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="cmj8v8v" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>南京環(huán)氧聚酰胺,PA66</p><p><span>***更新：</span>2021-01-10 03:17:11</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="tnf2skm" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州晶塑米新材料有限公司</a></p><p><span>聯(lián)系人：</span>李麗</p><p><span>郵箱: </span>321260043@qq.com</p><p><span>電話: </span>15162619982</p><p><span>傳真: </span>151_</p><p><span>網(wǎng)址: </span>http://szjingsumi.shop.88360.com</p><p><span>手機: </span>151-62619982</p><p><span>地址: </span>陸家鎮(zhèn)陸豐東路3號仕泰隆模具城17-8號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="3tq32mc" class="page-proshow02"><p class="title">詳細說明</p><div id="r2k39g3" class="box"><p><p style="text-indent:25px">聚酰胺色譜的分離原理：聚酰胺分子中既有親水基團又有親脂基團，當用極性溶劑作為流動相時，聚酰胺中的烷基作為非極性固定相，其色譜行為類似于反相分配色譜，南京環(huán)氧聚酰胺，因黃酮苷的極性大于苷元，所以黃酮苷比苷元容易洗脫；當用非極性流動相時，聚酰胺則作為極性固定相，其色譜行為類似于正相分配色譜。黃酮苷元的極性小于黃酮苷，因而黃酮苷元易被洗脫，南京環(huán)氧聚酰胺。此即是聚酰胺色譜的雙重層析原理，南京環(huán)氧聚酰胺。聚酰胺對極性物質的吸附作用，是由于它能和被分離物之間形成氫鍵所致。這種氫鍵的強弱就決定了被分離物與聚酰胺薄膜之間的吸附能力的大小。聚酰胺需嚴格控制機筒溫度，熔體溫度太高會因降解而導致制品變色。南京環(huán)氧聚酰胺</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京環(huán)氧聚酰胺,PA66" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637381781527958985/5347665.png"></div><p style="text-indent:25px">聚酰胺的吸附原理及含水溶劑中吸附強弱的規(guī)律：色譜分析法基本原理：色譜法，又稱層析法。根據(jù)其分離原理，有吸附色譜、分配色譜、離子交換色譜與排阻色譜等方法。  吸附色譜是利用吸附劑對被分離物質的吸附能力不同，用溶劑或氣體洗脫，以使組分分離。常用的吸附劑有氧化鋁、硅膠、聚酰胺等有吸附活性的物質。  分配色譜是利用溶液中被分離物質在兩相中分配系數(shù)不同，以使組分分離。其中一相為液體，涂布或使之鍵合在固體載體上，稱固定相；另一相為液體或氣體，稱流動相。常用的載體有硅膠、硅藻土、硅鎂型吸附劑與纖維素粉等。  離子交換色譜是利用被分離物質在離子交換樹脂上的離子交換勢不同而使組分分離。常用的有不同強度的陽、陰離子交換樹脂，流動相一般為水或含有有機溶劑的緩沖液。  排阻色譜又稱凝膠色譜或凝膠滲透色譜，是利用被分離物質分子量大小的不同和在填料上滲透程度的不同，以使組分分離。常用的填料有分子篩、葡聚糖凝膠、微孔聚合物、微孔硅膠或玻璃珠等，可根據(jù)載體和試樣的性質，選用水或有機溶劑為流動相。南京水性PA66銷售聚酰胺可以耐弱酸、弱堿和大部分非極性溶劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京環(huán)氧聚酰胺,PA66" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637381781650859375/5845082.png"></div><p style="text-indent:25px">聚酰胺的優(yōu)點：（1）聚酰胺可以耐弱酸、弱堿和大部分非極性溶劑，但是聚酰胺不耐強酸、強堿、極性溶劑和含鹽的溶液。 (2)聚酰胺對于礦物油、動物油、植物油的穩(wěn)定性良好，在汽油中長期浸泡，性質不會發(fā)生變化，較大增重不超過2%，但耐氯甲烷稍差。（3)聚酰胺的綜合的機械性能較好，抗張強度在600?700公斤/平方厘米之間，抗沖擊値大部分為100公斤米/平方厘米(無缺口），只有聚酰胺-9較髙，可達250?300公斤?厘米/平方厘米,聚酰胺的蠕變值都比較大。 (4）聚酰胺的熔點不高，一般在140?280攝氏度之間，聚酰胺長期使用溫度一般不超過80攝氏度，短期使用溫度雖可達120攝氏度，但會使制品顏色變深. (6)聚酰胺人低溫性能好，在低溫下，強度降低很少。 (7)聚酰胺有自潤滑性能，耐磨性好。 (8)聚酰胺有吸音性。 (9）聚酰胺加工性能良好，幷可切削、鉆孔。 (10）聚酰胺制品無嗅、無味、無毒、不會霉爛。</p><p style="text-indent:25px">聚酰胺它的介紹：1.聚酰胺簡稱尼龍他的優(yōu)點很多，分類也很多，尼龍6 尼龍66 尼龍11 尼龍1010等很多，其中尼龍6的用途普遍，尼龍6的系列產(chǎn)量大，用量多，用途廣的品中之一，普遍應用于，汽車，電子，電器，機械，交通，紡織，化工，造紙，包裝等行業(yè)。 2.聚酰胺俗名尼龍，是一種工程材料，尼龍在工程領域尼龍6 和尼龍66用量多。用途廣，尼龍6為半通明或不透明的乳白色結晶形聚合物顆粒，熔點220攝氏度，熱分解溫度大于310攝氏度，相對密度1.14 具有優(yōu)良的耐磨性和自潤滑性，機械強度高，耐熱性，電絕緣性能好，低溫性能優(yōu)良，能自熄，耐化學藥品性好。使用溫度范圍寬，但吸水率較高，尺寸穩(wěn)定性差。 3.聚酰胺又稱尼龍，尼龍是人們都非常清楚的，尼龍可用多種成型方法加工，如注塑擠出，澆注，模壓等，尼龍分類很多尼龍6 尼龍66 尼龍610等，分的非常細，根據(jù)專業(yè)用途選擇不同的材質。聚酰胺的阻燃改性聚酰胺同大多數(shù)的聚合物一樣，容易燃燒。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京環(huán)氧聚酰胺,PA66" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637381781484511719/4536504.png"></div><p style="text-indent:25px">收斂法：收斂法是由樹枝狀聚合物由外向內合成的方法，反應是由生成樹枝型聚合物較外層結構的部分開始，與分支單元反應物反應得到一代分子，然后與分支單元反應物反應得到第二代分子，較后與中心連接得到樹枝狀大分子。收斂法每步反應只有少數(shù)幾個官能團參加反應，分離提純比較容易，這種方法可以合成出結構比較完美的樹枝狀大分子，能夠很好地控制表面端基的官能團結構。 1.3 發(fā)散收斂結合法發(fā)散收斂結合法是先采用發(fā)散法制備出低代數(shù)的聚酰胺 - 胺樹枝狀大分子作為活性中心；然后用收斂法制得一定代數(shù)的扇形分子，成為“支化單體”；較后將“支化單體”接到活性中心上，合成出聚酰胺-胺樹枝狀大分子。發(fā)散收斂結合法綜合了上述兩種方法的優(yōu)點，一方面使分離純化變得簡單，減少分子結構缺陷；另一方面是合成聚酰胺-胺樹枝狀大分子的產(chǎn)率提高，相對分子質量增加較快。但是目前國內對這種方法研究很少，國外采用發(fā)散收斂結合法合成聚酰胺-胺樹枝狀大分子的研究很多。聚酰胺烘干后制成切片，再送去紡絲。南京水性PA66銷售</p><p style="text-indent:25px">聚酰胺由二元酸和二元胺經(jīng)縮聚而得。南京環(huán)氧聚酰胺</p><p style="text-indent:25px">聚酰胺樹脂：聚酰胺樹脂是分子中具有一CONH 結構的縮聚型高分子化合物，它通常由二元酸和二元胺經(jīng)縮聚而得。聚酰胺樹脂較突出的優(yōu)點為軟化點的范圍特別窄,而不象其它熱塑性樹脂那樣,有一個逐漸固化或軟化的過程，當溫度稍低于熔點時就引起急速地固化。聚酰胺樹脂具有較好的耐藥品性,能抵抗酸堿和植物油、礦物油等。由于它分子中具有氨基、羰基、酰胺基等極性基,因此對于木材、陶器、紙、布、黃銅、鋁和酚醛樹脂、聚酯樹脂、聚乙烯等塑料都具有良好的膠合性能。南京環(huán)氧聚酰胺</p><p style="text-indent:25px">蘇州晶塑米新材料有限公司致力于橡塑，是一家貿(mào)易型公司。公司自成立以來，以質量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下PA66，PC，POM，PLA深受客戶的喜愛。公司將不斷增強企業(yè)重點競爭力，努力學習行業(yè)知識，遵守行業(yè)規(guī)范，植根于橡塑行業(yè)的發(fā)展。蘇州晶塑米憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務、眾多的成功案例積累起來的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2779017.html</p></div></div></div></div></div><div id="2szjaxz" class="page-right twoColRt"><div id="ga3wi8x" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="etanpbd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="zjqcp8e" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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