Antibacterial medical drainage polyurethane foam and preparation method thereof
A polyurethane foam and foam stabilizer technology, applied in the field of medical materials, can solve the problems of increasing the burden on patients, multi-drug-resistant bacterial infection of patients, infection risks, etc., achieve good antibacterial and antibacterial performance, and solve the effect of anaerobic bacteria breeding
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Embodiment 1
[0023] The preparation method of antibacterial type medical drainage polyurethane foam 1 comprises the following steps:
[0024] 1) Weigh 50 parts of polyether polyols with a hydroxyl value of 55 mg KOH / g and a molecular weight of 4300 according to the ratio of parts by weight, 50 parts of polyether polyols with a hydroxyl value of 103 mg KOH / g and a molecular weight of 3700, and evenly 2.5 parts of foaming agent, 10 parts of dichloromethane, 55 parts of toluene diisocyanate, 0.5 parts of triethylenediamine, 0.5 parts of zinc catalyst, 5 parts of water, for later use;
[0025] 2) Mechanically mix polyether polyol, silicone foam stabilizer, methylene chloride, tannic acid, imidazolidinyl urea, silver sulfadiazine, chitosan and toluene diisocyanate to obtain a white material, which is the pre-mixture. Polymer;
[0026] 3) Pour triethylenediamine, zinc catalyst and water into the prepolymer, mechanically stir and mix evenly, pour into a mold to foam, mature at 80° C. for 24 hour...
Embodiment 2
[0028] The preparation method of antibacterial type medical drainage polyurethane foam 2 comprises the following steps:
[0029] 1) Weigh 50 parts of polyether polyols with a hydroxyl value of 55 mg KOH / g and a molecular weight of 4300 according to the ratio of parts by weight, 50 parts of polyether polyols with a hydroxyl value of 103 mg KOH / g and a molecular weight of 3700, and evenly 2 parts of foaming agent, 8 parts of cyclopentane, 0.5 part of tannic acid, 0.5 part of imidazolidinyl urea, 1 part of silver sulfadiazine, 6 parts of chitosan, 55 parts of toluene diisocyanate, 0.2 part of ethylenediamine, zinc 0.2 parts of catalyst, 4.5 parts of water, set aside;
[0030] 2) Mechanically mix polyether polyol, silicone foam stabilizer, cyclopentane, tannic acid, imidazolidinyl urea, silver sulfadiazine, chitosan and toluene diisocyanate to obtain a white material, which is the prepared Polymer;
[0031] 3) Pour ethylenediamine, zinc catalyst and water into the prepolymer, me...
Embodiment 3
[0033] The preparation method of antibacterial type medical drainage polyurethane foam 3 comprises the following steps:
[0034] 1) Weigh 30 parts of polyether polyols with a hydroxyl value of 55 mg KOH / g and a molecular weight of 4300 according to the ratio of parts by weight, 70 parts of polyether polyols with a hydroxyl value of 103 mg KOH / g and a molecular weight of 3700, and evenly 1.5 parts of foaming agent, 10 parts of cyclopentane, 0.1 part of tannic acid, 0.5 part of imidazolidinyl urea, 2 parts of silver sulfadiazine, 5 parts of chitosan, 45 parts of toluene diisocyanate, 0.3 part of triethylamine, zinc 0.2 parts of catalyst, 5 parts of water, spare;
[0035] 2) Mechanically mix polyether polyol, silicone foam stabilizer, cyclopentane, tannic acid, imidazolidinyl urea, silver sulfadiazine, chitosan and toluene diisocyanate to obtain a white material, which is the prepared Polymer;
[0036] 3) Pour triethylamine, zinc catalyst and water into the prepolymer, mechanic...
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