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                                                                        上海保立佳化工股份有限公司

                                                                        中文 English

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                                                                        Q2技術分享,創造更高價值

                                                                        在紙制品用水性涂料中占絕對優勢的是苯丙乳液類涂料,其耐候性較好、附著力強、流平性佳。在乳液聚合過程中,乳膠粒直徑是乳液合成質量的重要指標之一,乳液涂膜的吸水率又是乳液性能的重要標志。乳膠粒直徑越小、分布越窄,乳液的表面張力越低,成膜流平性越好,對底材具有良好的滲透性和潤濕性,附著力越強。


                                                                        乳液涂膜的吸水率越低,涂布后的產品耐水性越強。影響膠粒直徑及吸水率的因素很多,例如:乳化劑種類、用量及配比,引發劑用量,酸堿單體的影響,固含量,種子乳液中的單體比例等因素,都會對膠粒直徑和涂膜吸水率產生明顯的影響。同時上述因素之間又相互關聯。了解這些影響因素,對于研究和掌握乳液聚合技術具有重要的指導作用。本研究對上 述影響因素逐一進行了實驗,并在一定范圍內得到某些規律性的結果。


                                                                        甲基丙烯酸甲酯(MMA):分析純,北京益利精細化學品有限公司;丙烯酸丁酯(BA)、苯乙烯(St)、丙烯酸(AA):化學純,汕頭市西隴化工廠(使用前蒸餾除去阻聚劑);

                                                                                                  
                                                                                                  

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                                                                                                                                              快三买大小单双技巧

                                                                                                                                                                        
                                                                                                                                                                        

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