Medical non-woven fabric composite and preparation method and application thereof
A technology of composite materials and non-woven fabrics, applied in application, melt spinning, non-woven fabrics, etc., can solve problems such as single function, achieve short process flow, long-lasting radiation protection effect, and good broad-spectrum antibacterial effect
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[0022] Example 1
[0023] A method for preparing a medical non-woven fabric composite material includes the following steps:
[0024] (1) Weigh 30 parts of polyadipate / butylene terephthalate, 20 parts of polybutylene terephthalate and 30 parts of polycarbonate according to parts by weight and mix them thoroughly to obtain mixture A;
[0025] (2) Blend the mixture in step (1) with 2 parts of sodium dodecylbenzene sulfonate and 1 part of silver-loaded titanium dioxide, and then extrude and pelletize through a twin-screw extruder to obtain a blend , The extrusion temperature is 230℃;
[0026] (3) The blend in step (2) was vacuum dried at 100°C for 32 hours to make the moisture content less than 120ppm. The dried blend was heated by a screw extruder, melted at 260°C, and extruded into a melt. When the melt is extruded from the orifice of the die, it is blown by a high-pressure hot air flow with a flow rate of 90m / sec on both sides of the orifice and a temperature of 260°C. The melt of th...
Example Embodiment
[0028] Example 2
[0029] A method for preparing a medical non-woven fabric composite material includes the following steps:
[0030] (1) Weigh 40 parts of polyadipate / butylene terephthalate, 30 parts of polybutylene terephthalate and 40 parts of polycarbonate according to parts by weight, and mix them thoroughly to obtain mixture A;
[0031] (2) Blend the mixture in step (1) with 3 parts of sodium dodecylbenzene sulfonate and 1 part of ε-polylysine, and then extrude and pelletize through a twin-screw extruder to obtain Blend, extrusion temperature is 230℃;
[0032] (3) The blend in step (2) was vacuum dried at 110°C for 36 hours to make the moisture content less than 100ppm. The dried blend was heated by a screw extruder, melted at 280°C, and extruded into a melt. When the melt is extruded from the orifice of the die, it is blown by a high-pressure hot air flow with a flow rate of 100m / sec on both sides of the orifice and a temperature of 280℃. The melt of the blend is stretched int...
Example Embodiment
[0034] Example 3
[0035] A method for preparing a medical non-woven fabric composite material includes the following steps:
[0036] (1) Weigh 50 parts of polyadipate / butylene terephthalate, 30 parts of polybutylene terephthalate and 40 parts of polycarbonate according to parts by weight, and mix them thoroughly to obtain mixture A;
[0037] (2) Blend the mixture in step (1) with 4 parts of sodium dodecylbenzene sulfonate and 2 parts of silver-loaded titanium dioxide, and then extrude and pelletize through a twin-screw extruder to obtain a blend , The extrusion temperature is 250℃;
[0038] (3) The blend in step (2) was vacuum dried at 120°C for 20 hours to make the moisture content less than 110ppm. The dried blend was heated by a screw extruder, melted at 250°C, and extruded into a melt. When the melt is extruded from the orifice of the die, it is blown by a high-pressure hot air flow with a flow rate of 120m / sec on both sides of the orifice and a temperature of 270℃. The melt of ...
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