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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gvnue8u" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917296162110/8159038.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kew8xoa" 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>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>學(xué)生防毒面具品牌,防毒面具</p><p><span>***更新：</span>2021-01-04 00:27:27</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="uyaxz3g" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">中山市賽夫特勞保用品有限公司</a></p><p><span>聯(lián)系人：</span>陳小姐</p><p><span>郵箱: </span>ke.galabao@163.com</p><p><span>電話: </span>18124983196</p><p><span>傳真: </span>0760_86513681</p><p><span>網(wǎng)址: </span>http://saifutelaobao.shop.88360.com</p><p><span>手機(jī): </span>0760-86513681</p><p><span>地址: </span>中山市南區(qū)西環(huán)四路7號(hào)1-3樓、4樓之二(住所申報(bào)）;增設(shè)3處經(jīng)營(yíng)場(chǎng)所,具體為:1、中山市南區(qū)西環(huán)四路四號(hào)一、二樓;2、中山市南區(qū)西環(huán)四路10號(hào)三樓;3、中山市南區(qū)西環(huán)四路10號(hào)首層之二 </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="8oxulfb" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="0pbikr2" class="box"><p><p style="text-indent:25px">防毒面具應(yīng)用越來(lái)越普遍，而防毒面具的設(shè)計(jì)研發(fā)就非常重要，學(xué)生防毒面具品牌，特別是防毒面具的密合性。為什么這樣說(shuō)呢？使用到防毒面具的場(chǎng)合必定是含有毒物質(zhì)的，學(xué)生防毒面具品牌，如果被人直接吸到肺部，后果不堪設(shè)想。防毒面具雖然能夠有效過(guò)濾有毒物質(zhì)，但防毒面具本體與人體面部的密閉性好壞，將直接決定防護(hù)性能。根據(jù)物理學(xué)中氣流力體學(xué)原***流優(yōu)先流向阻力較小的方向，如果防毒面具與人體面部產(chǎn)生微小的縫隙，學(xué)生防毒面具品牌，因?yàn)槊婢邇?nèi)部壓力原因，吸進(jìn)人體的氣體并非是經(jīng)過(guò)濾毒盒過(guò)濾后的氣體，而是穿過(guò)縫隙的外界有毒氣體，所以說(shuō)防毒面具的沒(méi)有實(shí)際的防護(hù)效果。另外當(dāng)防毒面具本體與臉型不相吻合，也會(huì)造成佩戴者的不舒適感，影響用戶的體驗(yàn)。防毒面具的把關(guān)衛(wèi)士是過(guò)濾元件。學(xué)生防毒面具品牌</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學(xué)生防毒面具品牌,防毒面具" src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917296162110/8159038.png"></div><p style="text-indent:25px">防毒面具中的浸漬活性炭通過(guò)如下3種作用來(lái)達(dá)到防毒目的物理吸附作用。所謂吸附，是指流體分子在固體表面增稠或凝聚的現(xiàn)象。物理吸附是由吸附質(zhì)與吸附劑分子間的力相互吸引發(fā)生的，被吸附分子保持著原來(lái)的化學(xué)性質(zhì)，吸附熱較低，無(wú)選擇性，吸附和脫附速度較快，例如，活性炭對(duì)沙林、芥子氣、氯等毒劑蒸氣就是物理吸附作用。化學(xué)吸附作用。化學(xué)吸附是由吸附質(zhì)與吸附劑分子之間以類似化學(xué)鏈的力相吸發(fā)生的，吸附質(zhì)與吸附劑形成表面化合物，吸附熱較高，有選擇性，通常不可逆。浸漬炭借助于添加金屬氧化物來(lái)提高對(duì)難吸附毒劑的防毒能力。在浸漬炭吸附光氣時(shí)炭上的水分能與之發(fā)生水解反應(yīng)。所以，當(dāng)濾毒罐受潮后，對(duì)光氣的防護(hù)能力會(huì)有所提高。由于化學(xué)吸著作用是在炭上發(fā)生化學(xué)變化，所以過(guò)濾罐吸收**氫之類的毒劑失效以后，是不能用普通辦法使之再生的。而借助物理吸附作用進(jìn)行防護(hù)時(shí)，過(guò)濾罐失效以后還可以再生。上海防毒面具供應(yīng)廠家防毒面具防護(hù)范圍為粉塵、重?zé)?、霧滴、毒氣、毒蒸氣以及那些肉眼看不見(jiàn)的微小物質(zhì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學(xué)生防毒面具品牌,防毒面具" src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917289716797/3665729.png"></div><p style="text-indent:25px">防毒面具的阻塵效率。防毒面具的阻塵效率的高低是以其對(duì)微細(xì)粉塵，尤其對(duì)5微米以下的呼吸性粉塵的阻隔效率為標(biāo)準(zhǔn)。因?yàn)檫@一粒徑的粉塵能直接入肺泡，對(duì)人體健康造成的影響較大。一般的紗布防毒面具，其阻塵原理是機(jī)械式過(guò)濾，就是當(dāng)粉塵沖撞到紗布時(shí)，經(jīng)過(guò)—層層的阻隔,將一些大顆粒粉塵阻隔在沙布中。但是，對(duì)一些微細(xì)粉塵，尤其是小于5微米的粉塵，就會(huì)從紗布的網(wǎng)眼中穿過(guò)去，進(jìn)入呼吸系統(tǒng)。現(xiàn)國(guó)外有一些防毒面具，其濾料由充上長(zhǎng)久靜電的纖維組成，那些小于 5微米的呼吸性粉塵在穿過(guò)此種濾料的過(guò)程中，被靜電吸引而吸附在濾料捕獲到微細(xì)粉塵，真正起到阻塵作用。防毒面具里面只能放一張濾棉。</p><p style="text-indent:25px">防毒面具分為過(guò)濾式防毒面具和隔絕式防毒面具，民用的防毒面具一般是過(guò)濾式防毒面具，只具有防護(hù)一定類別有毒氣體的能力，對(duì)生化戰(zhàn)劑的防護(hù)能力很差。防毒面具則是屬于全封閉、隔絕型防毒面具，和很多模型愛(ài)好者戴著的噴漆用過(guò)濾式防毒面具有著天壤之別。采用了橡膠制成的面具，可以將整個(gè)頭罩進(jìn)去，即隔絕外界受沾染空氣進(jìn)入，也隔絕內(nèi)部氣體排出，密封性非常好，如果戴上不打開濾毒罐進(jìn)氣口的話，毫無(wú)疑問(wèn)會(huì)把自己給悶死。能不能過(guò)濾完全取決于這個(gè)濾毒罐。GP5的濾毒罐中是石棉，可以達(dá)到很高的過(guò)濾級(jí)別，過(guò)濾核輻射環(huán)境下的各種有害氣體，對(duì)也有過(guò)濾和吸附作用。但是，由于石棉本身就具有毒性，因此要保證濾毒罐的完好，否則可能傷害自身。防毒面具在霧霾、光化學(xué)煙霧較嚴(yán)重的城市也能起到比較重要的個(gè)人呼吸系統(tǒng)保護(hù)作用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學(xué)生防毒面具品牌,防毒面具" src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917321708985/5238077.png"></div><p style="text-indent:25px">防毒面具過(guò)濾層的防毒原理過(guò)濾層是專門用來(lái)濾除有害氣溶膠的。各種毒煙（固體微粒）、毒霧（液體微粒）、放射性灰塵和含細(xì)菌、病毒的配劑微粒等，均稱為有害氣溶膠。我們現(xiàn)在關(guān)注的霧霾，也可視為一種有害氣溶膠，加裝過(guò)濾層的防毒面具防它較有效。過(guò)濾層與有害氣溶膠的過(guò)濾過(guò)程和化學(xué)性質(zhì)關(guān)系不大，主要與其物理性質(zhì)、運(yùn)動(dòng)特性有關(guān)。氣溶膠微粒的大小范圍是0.001～ 100微米，隨著微粒大小的變化，它的物理性質(zhì)和運(yùn)動(dòng)規(guī)律都將發(fā)生變化，處在不斷的無(wú)規(guī)則運(yùn)動(dòng)狀態(tài)，它周圍的空氣分子呈不規(guī)則的熱運(yùn)動(dòng)。微粒越大，擴(kuò)散距離越小。一般半徑為0.1～0.5微米的微粒，移動(dòng)距離約為10～20微米/秒。吸附劑層中炭粒之間的距離約為400微米左右，氣流通過(guò)吸附劑層的時(shí)間不到1秒，所以氣溶膠除了極少部分的微?？赡芘鲎苍谔苛１砻姹蛔枇敉?，絕大多數(shù)的微粒將穿過(guò)浸漬炭吸附劑層。這就是浸漬炭吸附劑層不能防護(hù)有害氣溶膠的原因。佩戴時(shí)應(yīng)注意不要讓頭帶和頭發(fā)壓在面罩密合框內(nèi)，也不能讓面罩的頭帶彎向面罩內(nèi)。上海防毒面具供應(yīng)廠家</p><p style="text-indent:25px">防毒面具主要用來(lái)阻斷經(jīng)呼吸道產(chǎn)生毒性的毒氣，對(duì)于生物毒劑的防護(hù)，也有一定的作用。學(xué)生防毒面具品牌</p><p style="text-indent:25px">從誕生到現(xiàn)在防毒面具已經(jīng)經(jīng)歷了好幾代更替，防毒面具也從逐步擴(kuò)展到了各個(gè)領(lǐng)域到工業(yè)防護(hù)、勞動(dòng)保護(hù)和應(yīng)急救援等領(lǐng)域。隨著人們生活水平不斷提高，自我保護(hù)意識(shí)不斷增強(qiáng)，對(duì)防毒面具的需求量也越來(lái)越大。尤其是在新型冠形**產(chǎn)生后，很多軍迷都紛紛曬出了自己的防毒面具，那么防毒面具能夠防嗎？防毒面具可以分為兩種：一種是過(guò)濾式防毒面具另一種為隔絕式防毒面具。后者毋庸置疑肯定是防的，其本身就是多在極其惡劣的條件下使用，面具使用自身的儲(chǔ)氧設(shè)備進(jìn)行供氣，與外界空氣是完全隔絕的。而我們?cè)谏钪薪?jīng)常見(jiàn)到的往往是前者過(guò)濾式防毒面具，所以我們重點(diǎn)看一下后者。過(guò)濾式防毒面具與外界的空氣相交換，其對(duì)氧氣濃度、溫度、毒氣濃度都有一定要求。學(xué)生防毒面具品牌</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2689056.html</p></div></div></div></div></div><div id="1g38uw3" class="page-right twoColRt"><div id="n3zgdac" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nx8lxew" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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