Multilayer dressing for assisting wound healing
A protective layer and filling layer technology, applied in the chemical field, can solve problems such as inconvenient use, unbalanced force, and unfit dressings
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Embodiment 1
[0046] Embodiment 1: A kind of moist dressing and preparation method thereof
[0047] This embodiment provides a wet dressing, the preparation method of which is as follows:
[0048] Mix 0.5mol PPG6000 triol (weight-average molecular weight of 6000) with 2.5mol HDI, react at 80°C for 1 hour to obtain the reaction product; add 0.85mol PEG1000 (weight-average molecular weight of 1000), 0.85mol PEG2000 ( The weight average molecular weight is 2000) and 0.1mol hyaluronic acid (the weight average component is 1,000,000), cross-linking reaction at 80°C for 6 hours to obtain star-shaped hydrophilic polyurethane; 0.1mol sodium bicarbonate (foaming agent), 0.4 mol water, 0.5mol polydimethylsiloxane-polyoxyalkylene copolymer (surfactant), 0.1mol ethylenediamine and 0.1mol zinc isooctanoate (catalyst) are mixed to obtain a foaming component; the star-shaped hydrophilic After the permanent polyurethane and the foaming component were mixed uniformly according to the mass ratio of 1:2.5, t...
Embodiment 2
[0049] Embodiment 2: a kind of moist dressing and preparation method thereof
[0050] This embodiment provides a wet dressing, the preparation method of which is as follows:
[0051] On the basis of Example 1, by 0.1mol sodium bicarbonate (foaming agent), 0.4mol water, 0.5mol polydimethylsiloxane-polyoxyalkylene copolymer (surfactant), 0.1mol ethylenediamine and 0.1mol zinc isooctanoate (catalyst) is mixed and the foaming component is replaced by 0.1mol sodium bicarbonate (foaming agent), 0.4mol water, 0.5mol polydimethylsiloxane-polyoxyalkylene copolymer (interface active agent), 0.1mol ethylenediamine and 0.4mol dimethylethanolamine (catalyst) were mixed to obtain a foaming component, and wet dressing 2 was obtained.
Embodiment 3
[0052] Embodiment 3: a kind of moist dressing and preparation method thereof
[0053] This embodiment provides a wet dressing, the preparation method of which is as follows:
[0054] On the basis of Example 1, by 0.1mol sodium bicarbonate (foaming agent), 0.4mol water, 0.5mol polydimethylsiloxane-polyoxyalkylene copolymer (surfactant), 0.1mol ethylenediamine and 0.1mol of zinc isooctanoate (catalyst) is mixed and the foaming component is replaced by 0.1mol of sodium bicarbonate (foaming agent), 0.4mol of water, 0.5mol of polyoxyalkylene (surfactant), 0.2mol of butanediamine and 0.4 mol dimethylethanolamine (catalyst) was mixed to obtain a foaming component, and wet dressing 3 was obtained.
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