Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyurethane blood absorption foam, preparation method and application of polyurethane blood absorption foam

A polyurethane and blood technology, applied in the field of foam material products, can solve problems such as affecting application, infection, and easy blood coagulation

Active Publication Date: 2021-11-12
WANHUA CHEM GRP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent uses organotin as a catalyst and dichloromethane as a foaming agent. The residues of the two chemicals will increase the biological toxicity and affect its application in the medical and health field; on the other hand, after absorbing blood such as menstrual blood, itself and Under the induction of microorganisms, it is easy to release unpleasant odors, which greatly affects the user experience
[0006] Invention patent CN110577627A discloses a method for preparing an absorbent material with high absorption capacity. The polyols used in this method are all polyether polyols, and the obtained polyurethane foam will swell severely after sucking blood, and its mechanical properties will drop significantly, which will affect User experience; at the same time, the blood is easy to coagulate after sucking blood, which further reduces the blood absorption capacity
[0008] In addition, after the blood-absorbing foam absorbs blood, it will decompose under the action of itself and bacteria to produce odorous and irritating gases such as ammonia and trimethylamine. At the same time, the high pH will activate some enzyme activities and cause irritation to the skin and mucous membranes. Under multiple stimuli, it is easy to cause wound inflammation, infection, itching, erythema and other inflammatory reactions
Therefore, there is an urgent need to develop effective antibacterial and deodorizing functions for existing high-efficiency blood-absorbing products, and when ensuring the antibacterial and deodorizing functions, it is also necessary to ensure the safety of medical and sanitary products and reduce harm to the human body

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyurethane blood absorption foam, preparation method and application of polyurethane blood absorption foam
  • Polyurethane blood absorption foam, preparation method and application of polyurethane blood absorption foam
  • Polyurethane blood absorption foam, preparation method and application of polyurethane blood absorption foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Preparation of diatomite-nanometer silver / copper composite particles:

[0081] Prepare a mixed aqueous solution of copper nitrate and silver nitrate, wherein the concentration of silver nitrate is 0.1mol / L, and the concentration of copper nitrate is 0.1mol / L.

[0082] Take a mixed aqueous solution of 10g of diatomite (400 mesh in particle size) and 100g of copper nitrate and silver nitrate and stir it for 10 minutes in the dark to make it fully infiltrated, then place it in an ultrasonic cleaner and ultrasonically vibrate for 10 minutes. 40kHz, so that silver nitrate and copper nitrate can effectively enter the interior of the diatomite, and fully couple with the inner surface of the diatomite, then take it out and wash it quickly in the Buchner funnel with clean water.

[0083] Dry the obtained powder in an oven at 50°C for 12h to dryness, and then place it in a muffle furnace environment at 500°C for calcination for 4h to obtain diatomite-nanometer silver / copper compo...

Embodiment 2

[0086] Preparation of diatomite-nanometer silver / copper composite particles:

[0087] Prepare a mixed aqueous solution of copper nitrate and silver nitrate, wherein the concentration of silver nitrate is 0.03mol / L, and the concentration of copper nitrate is 0.04mol / L.

[0088] Take 20g of diatomite (particle size 300 mesh) and 160g of copper nitrate and silver nitrate mixed aqueous solution and stir for 10min under dark conditions to make it fully infiltrated, then place it in an ultrasonic cleaner and ultrasonically vibrate for 5min. 30kHz, so that the silver nitrate and copper nitrate can effectively enter the interior of the diatomite, and fully couple with the inner surface of the diatomite, then take it out and wash it quickly in the Buchner funnel with clean water.

[0089] Dry the obtained powder in an oven at 40°C for 15 hours to dryness, and then place it in a muffle furnace environment at 800°C for 2 hours to obtain diatomite-nano silver / copper composite particles wi...

Embodiment 3

[0092] Preparation of diatomite-nanometer silver / copper composite particles:

[0093] Prepare a mixed aqueous solution of copper nitrate and silver nitrate, wherein the concentration of silver nitrate is 0.2mol / L, and the concentration of copper nitrate is 0.3mol / L.

[0094] Take 5g of diatomite (500 mesh in particle size) and 100g of copper nitrate and silver nitrate mixed aqueous solution and stir for 10min under dark conditions to make it fully infiltrated, then place it in an ultrasonic cleaner and ultrasonically vibrate for 15min. 40kHz, so that silver nitrate and copper nitrate can effectively enter the interior of the diatomite, and fully couple with the inner surface of the diatomite, then take it out and wash it quickly in the Buchner funnel with clean water.

[0095] Dry the obtained powder in an oven at 60°C for 10h to dryness, and then place it in a muffle furnace environment at 600°C for 3h to obtain diatomite-nanometer silver / copper composite particles with a par...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Apertureaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides polyurethane blood absorption foam, a preparation method and application of the polyurethane blood absorption foam. The polyurethane blood absorption foam is prepared from the following raw materials: isocyanate, polyol, a chain extender, an antioxidant, an amino-containing polycarboxylic acid polymer, a hydrophilic surfactant, diatomite-nano silver / copper composite particles and water. The amino-containing polycarboxylic acid polymer and the diatomite-nano-silver / copper composite material are introduced into a foaming material at the same time, so that the prepared polyurethane absorber foam has the fluid characteristics of being antibacterial, deodorizing, being high in blood affinity, inhibiting blood coagulation, being high in safety, being capable of rapidly absorbing blood and the like.

Description

technical field [0001] The invention relates to the field of foam material products, in particular to a novel polyurethane blood-absorbing foam, a preparation method and its application in the medical and health field. Background technique [0002] With the improvement of people's living standards, disposable sanitary products, as a daily essential product, have greatly improved their usage and quality requirements. Traditional disposable hygiene products are mainly based on the composite of fluff pulp and high-absorbent resin, but there are also some problems, such as SAP cannot be effectively dispersed, and after absorbing liquid, it will cause gel blockage and affect further absorption; in addition, the comfort of the material , The softness also affects the life experience of consumers. In addition, fluff pulp is mainly produced in the Masson pine material in the Americas. As a forest timber resource, the output is limited, which limits the output of disposable sanitary...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61L15/26A61L15/18A61L15/42A61L15/44A61L15/46C08G18/48C08G101/00
CPCC08G18/4833A61L15/26A61L15/46A61L15/44A61L15/425A61L15/18C08G2110/0083A61L2300/102A61L2300/45A61L2300/10A61L2300/404A61L2300/624C08L75/04
Inventor 周伟琦田云牛晓菲范梦杰
Owner WANHUA CHEM GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com