Medical latex film and preparation method thereof
A film and latex technology, applied in the field of medical latex film and its preparation, can solve the problems of aging resistance, oil resistance, chemical resistance, temperature resistance, frost resistance, poor adhesion, etc., and achieves excellent mechanical properties and good compatibility. , the effect of easy modification
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Embodiment 1
[0035] A kind of medical latex film, comprises the composition of following parts by weight:
[0036] Nano silver 0.01kg;
[0037] Water-soluble chitosan 0.1kg;
[0038] Antioxidant 0.1kg;
[0039] Anti-slip agent 2kg;
[0040] Water-based polyurethane 5kg;
[0041] Natural latex 80kg.
[0042] The preparation method of medical latex film comprises the following steps:
[0043] (1) Put each component into the reaction kettle, heat to 90°C in a nitrogen atmosphere, stir continuously at a speed of 100r / min, and react for 2h to obtain a pre-finished product;
[0044] (2) Send the pre-finished product prepared in step (1) into a twin-screw extruder, the extrusion temperature is 175°C, the screw speed is 40-45Hz, the twin-screw extruded strip is water-cooled, air-dried, and pelletized to obtain masterbatch ;
[0045] (3) Extrude the masterbatch obtained in step (2) into a plastic film blowing machine to blow a film to obtain a medical film.
Embodiment 2
[0047] A kind of medical latex film, comprises following composition:
[0048] Nano silver 0.05kg;
[0049] Water-soluble chitosan 1kg;
[0050] Antioxidant 1kg;
[0051] Anti-slip agent 5kg;
[0052] Waterborne polyurethane 10kg;
[0053] Natural latex 90kg.
[0054] The preparation method of medical latex film comprises the following steps:
[0055] (1) Put each component into the reaction kettle, heat to 100°C in a nitrogen atmosphere, stir continuously at a speed of 120r / min, and react for 3h to obtain a pre-finished product;
[0056] (2) Send the pre-finished product prepared in step (1) into a twin-screw extruder, the extrusion temperature is 185°C, the screw speed is 40-45Hz, the twin-screw extruded strip is water-cooled, air-dried, and pelletized to obtain masterbatch ;
[0057] (3) Extrude the masterbatch obtained in step (2) into a plastic film blowing machine to blow a film to obtain a medical film.
Embodiment 3
[0059] A kind of medical latex film, comprises following composition:
[0060] Nano silver 0.03kg;
[0061] Water-soluble chitosan 0.5kg;
[0062] Antioxidant 0.5kg;
[0063] Anti-slip agent 3kg;
[0064] Water-based polyurethane 8kg;
[0065] 85 parts of natural latex.
[0066] The preparation method of medical latex film comprises the following steps:
[0067] (1) Put each component into the reaction kettle, heat to 100°C in a nitrogen atmosphere, stir continuously at a speed of 110r / min, and react for 3h to obtain a pre-finished product;
[0068](2) Send the pre-finished product prepared in step (1) into a twin-screw extruder, the extrusion temperature is 180°C, the screw speed is 40-45Hz, the twin-screw extruded strip is water-cooled, air-dried, and pelletized to obtain masterbatch ;
[0069] (3) Extrude the masterbatch obtained in step (2) into a plastic film blowing machine to blow a film to obtain a medical film.
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