<***N style="mso-fareast-font-family: 宋體" lang=EN-US><***N style="mso-spacerun: yes">??? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">噴射印刷用墨水應(yīng)具有良好的穩(wěn)定性，在長時問連續(xù)運行噴射印刷時，不堵塞噴嘴。此外，也要求在停止噴射印刷時，沒有因殘留在噴嘴中的墨水干燥硬化而堵塞噴嘴的現(xiàn)象發(fā)生，不妨礙重復噴射，不影響噴射方向，能保持流暢的再噴射狀態(tài)。<***N style="mso-fareast-font-family: 宋體" lang=EN-US>

<***N style="mso-fareast-font-family: 宋體" lang=EN-US><***N style="mso-spacerun: yes">??? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在鋼筆和描寫式記錄器上使用的墨水，也有類似的要求。過去采用了乙二醇、二乙二醇、聚乙二醇、甘油等多元醇系列濕潤劑應(yīng)用于噴射印刷用墨水，在一定程度上能控制在停止噴射時墨水在噴嘴中的干燥固化。但長時間運行或長時間停止<***N style="mso-fareast-font-family: 宋體" lang=EN-US>(<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一周左右<***N style="mso-fareast-font-family: 宋體" lang=EN-US>)<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，在噴嘴出口處仍有染料堆積物，改變了噴射方向，甚至完全堵塞噴嘴，以致于得不到滿意的結(jié)果。<***N style="mso-fareast-font-family: 宋體" lang=EN-US>

<***N style="mso-fareast-font-family: 宋體" lang=EN-US><***N style="mso-spacerun: yes">??? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">采用<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">低分子量聚合物后<***N style="mso-fareast-font-family: 宋體" lang=EN-US>(<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">平均分子量在<***N style="mso-fareast-font-family: 宋體" lang=EN-US>400<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">左右<***N style="mso-fareast-font-family: 宋體" lang=EN-US>)<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，由于其不發(fā)揮性，又有良好的濕潤性和水溶性以及對染料、顏料的親和性，可以使油墨、墨水具有良好的分散穩(wěn)定性，在噴印、書寫及記錄時，具有流暢的重復噴射書寫性能，停一周后仍然能正常噴印。<***N style="mso-fareast-font-family: 宋體" lang=EN-US>

<***N style="mso-fareast-font-family: 宋體" lang=EN-US><***N style="mso-spacerun: yes">??? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">碳素墨水由于在貯存過程中極易發(fā)生炭黑的絮凝、沉淀，嚴重影響書寫質(zhì)量，經(jīng)常堵塞書寫工具，成為墨水行業(yè)幾十年未解決的難題之一。上海墨水廠采用浙江省化工院提供的低分子量<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">及<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PCM<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">進行了配方試驗、工藝試驗以及墨水的各項性能測試，證明低分子量<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">與墨水中其它組分互溶性好，對炭黑具有一定的分散能力及膠體保護能力，在加入<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">后的墨水書寫流利，手感潤滑，尤其是墨水的間歇書寫能力有較大的改善。該廠利用以上技術(shù)，研制成功了新一代“英雄”牌**墨水，縮短了與國外**碳素墨水的差距。<***N style="mso-fareast-font-family: 宋體" lang=EN-US>

<***N style="mso-fareast-font-family: 宋體" lang=EN-US><***N style="mso-spacerun: yes">??? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">另外，在圓珠筆用墨水及廣告畫顏料組成物中，<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP K17<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">或<***N style="mso-fareast-font-family: 宋體" lang=EN-US>K30<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">也可作為保護膠體和增稠劑。用<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">制得的圓珠筆用水性墨水既保持了炭黑墨水筆跡堅牢，無溢流、不褪色的優(yōu)點，又減輕了珠座的磨損，延長了使用壽命。<***N style="mso-fareast-font-family: 宋體" lang=EN-US>

<***N style="mso-fareast-font-family: 宋體" lang=EN-US><***N style="mso-spacerun: yes">??? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">從全球范圍看，<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在噴印墨水、涂料、照相乳液等行業(yè)作為分散穩(wěn)定劑、流變調(diào)節(jié)劑等的需求量約占<***N style="mso-fareast-font-family: 宋體" lang=EN-US>1500<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">噸左右，占<***N style="mso-fareast-font-family: 宋體" lang=EN-US>PVP<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">總需求量的<***N style="mso-fareast-font-family: 宋體" lang=EN-US>3.3%<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">?？傆昧坎凰愦螅谀承┊a(chǎn)品中則一直是不可或缺的，歷經(jīng)幾十年而不變。<***N style="mso-fareast-font-family: 宋體" lang=EN-US>