本发明涉及两亲性聚合物技术领域，特别涉及一种多嵌段共聚物、多嵌段两亲共聚物、多嵌段两亲聚合物及其制备方法，其中，所述多嵌段共聚物，包括，聚二甲基硅氧烷重复单元和聚乙二醇二甲基丙烯酸酯重复单元，该多嵌段共聚物的制备方法，由该多嵌段共聚物制备的多嵌段两亲共聚物以及多嵌段两亲聚合物。采用本发明提供的多嵌段共聚以及由该聚合物制备的涂料，同时具备良好的疏水性和疏油性，并且还具备优异的抗蛋白吸附能力和抗硅藻吸附性能，而在进入季铵盐基团后的共聚物，在保持前述性能的情况下，还兼具有抗菌能力，一定程度上强化了涂层在性能上的缺陷，具有广泛的市场应用前景。

The present invention relates to the field of amphiphilic polymer technology, in particular to a multi block copolymer, a multi block amphiphilic copolymer, a multi block amphiphilic polymer, and a preparation method thereof. The multi block copolymer comprises a polydimethylsiloxane repeating unit and a polyethylene glycol dimethylacrylate repeating unit, and a preparation method for the multi block copolymer, A multi block amphiphilic copolymer and a multi block amphiphilic polymer prepared from the multi block copolymer. The multi block copolymerization provided by the present invention and the coating prepared from the polymer have good hydrophobicity and oil repellency, as well as excellent protein adsorption resistance and diatom adsorption resistance. The copolymer after entering the quaternary ammonium salt group also has antibacterial ability while maintaining the aforementioned performance, which to some extent strengthens the performance defects of the coating and has broad market application prospects.