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<p><p>　　一種聚氨酯篩網的生產工藝，包括以下步驟:</p><p>　　(I)、原料準備</p><p>　　a、將聚氨酯的預聚體置于75-85°C的烘箱中預熱12_16h；</p><p>　　b、將步驟a預熱好的預聚體放入A料儲料罐中，A料儲料罐溫度為75-85°C；</p><p>　　C、通過真空栗使預聚體在-0.08----0.1MPa真空度下攪拌脫泡30_40min ；</p><p>　　d、稱取4，4’ - 二氨基-3，3’ - 二氯二苯甲烷使用烘箱加熱融化，然后加入B料反應釜，在110-115°C下保溫處理；</p><p>　　(2 )、金屬骨架的加工、噴砂及涂刷粘合劑</p><p>　　a、使用鋼絲繩制成金屬骨架，</p><p>　　b、對金屬骨架進行噴砂處理，處理時，噴射材料為粒度為20-40目的金剛砂，壓縮空氣的壓力為0.5-0.7MPa，噴砂處理時，噴槍與金屬骨架的距離為180_220mm ；</p><p>　　C、將噴砂處理后的金屬骨架使用二氯甲烷進行脫脂處理，然后使用Chemlok218粘合劑涂刷金屬骨架表面，涂刷時使用甲苯和二異丙醇按體積比1:1作為稀釋劑，稀釋劑與chemlok218按體積比1:1混合使用；</p><p>　　(3)、使用聚氨酯澆注</p><p>　　a、將處理好的金屬骨架放入模具，使用步驟(I)中保溫的預聚體和4，4’-二氨基_3，3’ - 二氯二苯甲烷進行澆注，澆注時壓強為0.6-0.8MPa，模具溫度為80-100°C，澆注完成后進行固話處理，固化溫度100°C，固化處理時間24-28h。</p><p>　　一種聚氨酯篩網的生產工藝，包括以下步驟:<br/></p><p>　　(I)、原料準備</p><p>　　a、將聚氨酯的預聚體置于75-85°C的烘箱中預熱12_16h；</p><p>　　b、將步驟a預熱好的預聚體放入A料儲料罐中，A料儲料罐溫度為75-85°C；</p><p>　　C、通過真空栗使預聚體在-0.08----0.1MPa真空度下攪拌脫泡30_40min ；</p><p>　　d、稱取4，4’ - 二氨基-3，3’ - 二氯二苯甲烷使用烘箱加熱融化，然后加入B料反應釜，在110-115°C下保溫處理；</p><p>　　(2 )、金屬骨架的加工、噴砂及涂刷粘合劑</p><p>　　a、使用鋼絲繩制成金屬骨架，</p><p>　　b、對金屬骨架進行噴砂處理，處理時，噴射材料為粒度為20-40目的金剛砂，壓縮空氣的壓力為0.5-0.7MPa，噴砂處理時，噴槍與金屬骨架的距離為180_220mm ；</p><p>　　C、將噴砂處理后的金屬骨架使用二氯甲烷進行脫脂處理，然后使用Chemlok218粘合劑涂刷金屬骨架表面，涂刷時使用甲苯和二異丙醇按體積比1:1作為稀釋劑，稀釋劑與chemlok218按體積比1:1混合使用；</p><p>　　(3)、使用聚氨酯澆注</p><p>　　a、將處理好的金屬骨架放入模具，使用步驟(I)中保溫的預聚體和4，4’-二氨基_3，3’ - 二氯二苯甲烷進行澆注，澆注時壓強為0.6-0.8MPa，模具溫度為80-100°C，澆注完成后進行固話處理，固化溫度100°C，固化處理時間24-28h。</p><p>　　對比例的聚氨酯使用如下方法合成:聚醚多元醇、聚酯多元醇和多異氰酸酯以NC0/0H當量比為1.1?3.0進行反應后，使其含有0.01?5質量％的胺系固化促進劑而成，聚醚多元醇/聚酯多元醇的質量比為95/5?75/25，上述聚醚多元醇為聚丁二醇-聚乙二醇共聚物，上述胺系固化促進劑為選自二氮雜雙環十一碳烯和二氮雜雙環壬烯中的至少I種胺系化合物。</p><p style="text-align: center;"><img src="/uploads/ueditor/20200915/1-200915114130627.jpg" title="聚氨酯篩網的固化工藝" alt="聚氨酯篩網的固化工藝" width="450" height="450" border="0" vspace="0" style="width: 450px; height: 450px;"/></p><p>　　一種聚氨酯篩網的生產工藝，包括以下步驟：（1）、原料準備；（2）、金屬骨架的加工、噴砂及涂刷粘合劑；（3）、使用聚氨酯澆注；本發明提供的聚氨酯篩網的生產工藝通過在對聚氨酯的預聚體及固化劑在澆注前進行處理，提升了聚合的均勻性，使聚合時各位置的聚氨酯均勻聚合，從而防止局部出現缺陷造成篩網整體穩定性下降，通過在澆注前對金屬骨架表面進行處理，進一步提升聚氨酯與金屬骨架粘結的強度，改善由于材料不同造成的耐冷熱沖擊不均勻引起的聚氨酯與金屬骨架脫落的現象。</p><p>　　<a href="http://www.tap-swipe-pinch.com" target="_blank" title="聚氨酯篩網">聚氨酯篩網</a>、篩板俗稱牛筋篩，采用優質聚酯多元醇合成體澆注生產，高溫硫化。</p><p>　　產品孔徑為梯形篩孔，篩分過程中不易堵料，孔徑規格0.2毫米以上均能生產。</p><p>　　產品特點：篩分效果好，質量穩定，噪音小，耐磨性能強，使用周期長達6-10個月。</p><p>　　長緊式篩網兩側設有彈性張緊鉤，整體重量輕，柔性好，運輸保管容易，安裝拆卸方便，適用于掛鉤式振動篩設備；骨架式篩板內附鋼板焊接骨架支持，篩板支撐力強，螺絲固定，安裝方便，適用于各種篩機。</p><p>　　聚氨酯骨架式篩板：脫水篩網聚氨酯彈性篩板充分地利用了聚氨酯彈性體卓越的耐磨性能，寬廣硬度范圍內的高強度，高伸長和高彈性，良好的減震性能以及耐油，耐低溫，耐熱老化，抗輻射，電絕緣等性能，加上其合理篩孔結構和安裝結構設計，從而使聚氨酯篩板具有如下特點：</p><p>　　條封聚氨酯篩板：可以做到0.2mm—13mm，脫水篩板一次可用6個月—12個月以上。</p><p><br/></p><p><br/></p><p style="box-sizing: border-box; margin-top: 0px; margin-bottom: 10px; padding: 0px; color: rgb(68, 68, 68); font-family: "microsoft yahei"; font-size: 15px; white-space: normal; background-color: rgb(255, 255, 255);">推薦閱讀：</p><p 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