Shanghai Daoqin Plastics Co., Ltd.

         high water property resin is types can absorption quality 几十倍甚至几千倍 water polymer/macromolecule material, its tool has crosslinked structure. due to its tool has excellent water property can, therefore in 生理卫生, 农林农业, material and other tool has application. in application in, due to its in water speed degree relatively slow phenomenon, generally need several small 时甚至几天才 can to solvent balanced, 不利于实际 production application. is solution water property resin solvent relatively slow issues, commonly used methods has: powder formed more small pellets, water property resin internal more structure, surface modified and other methods improve/increase water property resin water speed degree. currently water property resin large more using/adopting carbon acid hydrogen 钠/ carbon acid 钠– acid system made more water property resin, this type of methods reaction speed degree relatively fast, easy control. is more good control more water property resin combined formed, 华东理工 large 学 using/adopting water solvent liquid polymerization method, in front combined formed 实验 基础 upper, acrylic (AA) is mono 体, 以 硫 acid 钾(KPS)–亚硫 acid hydrogen 钠(NaHSO3) is oxidation also 原引发 agent, N, N–亚甲基 di propylene amine (NNMBA) is crosslinked agent, 羧甲基 fiber 素钠(CMC-Na) is increase agent, 泊洛沙姆 is surface active property agent, separation using/adopting water alcohol (C2H5OH) and carbon acid hydrogen 氨(NH4HCO3) is agent, utilizing material and chemical principle made water rate high more polypropylene (PP) acid high water property resin, for 150～300 μm high water property resin use ethylene glycol sink marks ether (C8H14O4), water combined acid aluminum [Al2(SO4)3·18H2O]以 and poly ethylene glycol (400) di acrylic ester (PEG-400-DA)配 made mixed combined solvent liquid surface modified, through absorption property can testing, 傅立叶变换红 outer light 谱(FTIR), electronics micro 镜(SEM), hot heavy (TG) analysis and other methods for its table/sheet testing.

        1, 实验 using/adopting main/primary Raw Materials

        AA: analysis pure, Shanghai 麦克林生化科技 has company;

         hydrogen oxidation 钠(NaOH): excellent grade pure, chemical 科技(江苏) has company;

        泊洛沙姆: F127, molecular weight is 10 000～12 000, 盘锦研峰科技 has company;

        C2H5OH, NH4HCO3: analysis pure, Shanghai 泰坦科技 corporation has company;

        PEG-400-DA: chemical pure, made has machine chemical industrial 株式会社;

        C8H14O4: ring oxygen value is 0.7 mol/(100 g), 阿达玛试 agent (Shanghai) has company;

        KPS, NaHSO3 and chlorine 化钠(NaCl): analysis pure, Shanghai chemical agent has company;

        NNMBA, CMC-Na, Al2(SO4)3·18H2O: analysis pure, group chemical agent has company.

        2, sample made 备

        (1)普通 high water property resin made 备.

        称取30 g AA mono 体, water conditions lower add 入NaOH至 in and degree is 90%, again add 入AA mono quality separation 数0.02% NNMBA solvent liquid, 0.07% KPS solvent liquid and NaHSO3 solvent liquid 　(KPS and NaHSO3 material amount ratio is 2∶1), add amount water, make AA mono concentrated degree is 33%, 搅拌10 min rear, 于60℃ lower reaction 2 h, formed fine long strip/profile rear, in 105℃ lower dry, powder 碎, separation, use.

        (2) more high water property resin made and modified.

        称取30 g AA mono 体, add amount good CMC-Na, 泊洛沙姆于250 mL 三口烧 bottle in, 搅拌, separation solvent understanding;冰 water conditions lower add 入NaOH至 in and degree is 90%, again add 入AA mono quality separation 数0.02% NNMBA solvent liquid, 0.07% KPS solvent liquid rear, separation add 入致孔 agent C2H5OH and NH4HCO3, most rear add 入NaHSO3 solvent liquid (KPS and NaHSO3 material amount ratio is 2∶1), add 入适当 离子 water, make AA mono concentrated degree is 33%, 搅拌10 min rear, 于60℃ lower reaction 2 h, formed fine long strip/profile rear, in 105℃ lower meanwhile dry, will dry rear water property resin powder 碎, separation, use. separation rear 150～300 μm吸 water property resin use 含0.035 g C8H14O4, 0.345 g Al2(SO4)3·18H2O以 and 0.345 g PEG-400-DA配 made mixed combined solvent liquid surface crosslinked modified.

        3, property can summary

        (1) using/adopting water solvent liquid polymerization method, 以KPS–NaHSO3 is oxidation also 原引发 agent, NNMBA is crosslinked agent, CMC-Na is increase agent, 泊洛沙姆 is surface active property agent, C2H5OH is material 理致孔 agent, NH4HCO3 is chemical agent, separation made more high water property resin, to most excellent more high water property resin combined formed conditions is: CMC-Na use amount is 0.8%, 泊洛沙姆 use amount is 0.1%, C2H5OH use amount is 10%, NH4HCO3 use amount is 10%. C2H5OH致孔 high water property resin water rate relatively NH4HCO3致孔 more high, 且二者 吸 离子 water speed degree versus large, in 15 min left right to saturated and.

        (2) through FTIR, SEM, TG for water property resin table/sheet table/sheet 明, already formed made more high water property resin, C2H5OH is agent more high water property resin relatively NH4HCO3 is agent more high water property resin distribution and large small more add uniform, 致密. through for C2H5OH致孔 high water property resin surface modified 发现, modified rear more water property resin water speed degree obvious improve/increase, heat stabilized property has improve/increase, water rate decline.