Modified high-blood-absorption polyurethane sponge as well as preparation method and application thereof

A polyurethane sponge, modified technology, applied in absorbent pads, bandages, medical science and other directions, can solve the problems of increased biological toxicity, poor absorption performance, poor use feeling, etc., to reduce the reduction of absorption capacity and improve blood absorption capacity , the effect of comfortable use experience

A polyurethane sponge, modified technology, applied in absorbent pads, bandages, medical science and other directions, can solve the problems of increased biological toxicity, poor absorption performance, poor use feeling, etc., to reduce the reduction of absorption capacity and improve blood absorption capacity , the effect of comfortable use experience

CN112266455AActive Publication Date: 2021-01-26WANHUA CHEM GRP CO LTD
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  • Modified high-blood-absorption polyurethane sponge as well as preparation method and application thereof
  • Modified high-blood-absorption polyurethane sponge as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] A. Weigh respectively by weight: a modified high blood-absorbing polyurethane sponge, made of the following raw materials by weight: 30 parts of isocyanate, wherein the mass ratio of methyl isocyanate to hexamethylene isocyanate is 6:4 , polylactic acid glycol 18 parts, PEG-2000 42 parts, fluff pulp 15 parts, super absorbent resin WHS 300 30 parts, chitosan 5 parts, water 90 parts, hydrophilic surfactant ( PE6400: 188=1:2) 5 parts, chain extender TMP 2 parts, inorganic filler 300 mesh diatomite 20 parts, antioxidant IRGASTAB PUR 68 0.3 part;

[0080] B. React isocyanate, polyether polyol, polyester polyol, polymer polyol, chain extender, and antioxidant at 80°C for 12 hours to obtain a polyol-modified prepolymer;

[0081] C. Mix fluff pulp fiber, chitosan, hydrophilic surfactant, inorganic filler and water to obtain white material, and keep it at 20±2°C;

[0082] D. Raise the temperature of the prepolymer to 40°C, then mix the super absorbent resin and the modified ...

Embodiment 2

[0086] A. Weigh respectively by weight: a modified high blood-absorbing polyurethane sponge, made of the following raw materials by weight: 30 parts of isocyanate, wherein the ratio of methyl isocyanate to hexamethylene isocyanate is 6:4, 36 parts of polylactic acid glycol, 84 parts of PEG-2000, 15 parts of fluff pulp, 30 parts of super absorbent resin WHS 300, 5 parts of chitosan, 90 parts of water, hydrophilic surfactant ( PE6400: 188=1:2) 5 parts, chain extender TMP 2 parts, inorganic filler 300 mesh diatomite 20 parts, antioxidant IRGASTAB PUR 68 0.3 part;

[0087] B. React isocyanate, polyether polyol, polyester polyol, polymer polyol, chain extender, and antioxidant at 80°C for 12 hours to obtain a polyol-modified prepolymer;

[0088] C. Mix fluff pulp fiber, chitosan, hydrophilic surfactant, inorganic filler and water to obtain white material, and keep it at 20±2°C;

[0089] D. Raise the temperature of the prepolymer to 40°C, then mix the super absorbent resin and t...

Embodiment 3

[0093] A. Weigh respectively by weight: a modified high blood-absorbing polyurethane sponge, made of the following raw materials by weight: 30 parts of isocyanate, wherein the ratio of methyl isocyanate to hexamethylene isocyanate is 6:4, 30 parts of polylactic acid glycol, 70 parts of PEG-2000, 15 parts of fluff pulp, 30 parts of super absorbent resin WHS 300, 15 parts of chitosan, 90 parts of water, hydrophilic surfactant ( PE6400: 188=1:2) 5 parts, chain extender TMP 2 parts, inorganic filler 300 mesh diatomite 20 parts, antioxidant IRGASTAB PUR 68 0.3 part;

[0094] B. React isocyanate, polyether polyol, polyester polyol, polymer polyol, chain extender, and antioxidant at 80°C for 12 hours to obtain a polyol-modified prepolymer;

[0095] C. Mix fluff pulp fiber, chitosan, hydrophilic surfactant, inorganic filler and water to obtain white material, and keep it at 20±2°C;

[0096] D. Raise the temperature of the prepolymer to 40°C, then mix the super absorbent resin and ...

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Abstract

The invention provides a modified high-blood-absorption polyurethane sponge as well as a preparation method and application thereof. The polyurethane sponge is prepared from the following raw materials: isocyanate, polyol, super absorbent resin, fluff pulp, cationic polysaccharide, water, a hydrophilic surfactant, a chain extender, an inorganic filler and an antioxidant. The prepared polyurethanesponge has the advantages of being high in liquid guiding performance, high in absorption foam utilization rate, high in blood absorption capacity, low in blood reverse osmosis rate, low in swelling rate after blood absorption and the like, high strength of the sponge can be maintained after blood absorption, and the polyurethane sponge is suitable for the field of disposable blood absorption hygienic products such as sanitary towels and medical dressings.

Description

technical field [0001] The invention relates to the field of polyurethane foam material products, in particular to a modified high blood-absorbing polyurethane sponge, a preparation method and its application in the medical and health field. Background technique [0002] With the improvement of people's living standards, people's demand for disposable sanitary products has gradually increased, and higher requirements have been put forward for the quality of disposable sanitary products. With the industrialization of acrylic-based superabsorbent resins, superabsorbent disposable sanitary products (including feminine hygiene products, baby diapers, etc.) filled with superabsorbent resins have developed rapidly, but there are many problems in the conventional carrier of superabsorbent resins, including dispersion Uneven, easy to cause problems such as gel clogging and poor comfort after absorbing liquid. At the same time, with the diversification of user experience, people's d...

Claims

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Application Information

Patent Timeline
26 Jan 2021
Publication
CN112266455A
IPC
C08G18/66; C08G18/48; C08G18/42; C08G18/62; C08G18/64; C08G18/32; C08G18/12; C08K7/26; A61L15/26; A61L15/42; A61L15/60; C08G101/00
CPC
C08G18/6611; C08G18/4081; C08G18/4833; C08G18/428; C08G18/6216; C08G18/6484; C08G18/3206; C08G18/12
Inventors
周伟琦; 尹金超