A kind of polyurethane blood absorption foam, preparation method and use thereof

A polyurethane and blood technology, applied in the field of foam material products, can solve the problems of reducing blood absorption capacity, affecting application, affecting user experience, etc.

Active Publication Date: 2022-07-12
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
  • A kind of polyurethane blood absorption foam, preparation method and use thereof
  • A kind of polyurethane blood absorption foam, preparation method and use thereof
  • A kind of polyurethane blood absorption foam, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

[0083] The obtained powder was dried in an oven at 50°C for 12 hours, and then calcined in a muffle furnace at 500°C for 4 hours to obtain diatomite-nano-silver / copper composite particles with a par...

Embodiment 2

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

[0087] A mixed aqueous solution of copper nitrate and silver nitrate was prepared, wherein the concentration of silver nitrate was 0.03 mol / L and the concentration of copper nitrate was 0.04 mol / L.

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

[0089] The obtained powder was dried in an oven at 40°C for 15 hours, and then calcined in a muffle furnace at 800°C for 2 hours to obtain diatomite-nanosilver / copper composite particles with a parti...

Embodiment 3

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

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

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

[0095] The obtained powder was dried in an oven at 60°C for 10 hours, and then calcined in a muffle furnace at 600°C for 3 hours to obtain diatomite-nanosilver / copper composite particles with a particle s...

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 size (mesh)aaaaaaaaaa
pore sizeaaaaaaaaaa
particle size (mesh)aaaaaaaaaa
Login to view more

Abstract

The invention provides a polyurethane blood-absorbing foam, a preparation method and use thereof. The raw materials of the polyurethane blood absorbing foam are isocyanate, polyol, chain extender, antioxidant, amino-containing polycarboxylic acid polymer, hydrophilic surfactant, diatomite-nano silver / copper composite particles, and water. In the present invention, by introducing amino-containing polycarboxylic acid polymer and diatomite-nano silver / copper composite material into the foaming material at the same time, the prepared polyurethane absorber foam has antibacterial and deodorizing properties, strong blood affinity, and inhibits blood coagulation. It has high safety and can quickly absorb fluid properties such as blood.

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 hygiene 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 the gel will be blocked after absorbing liquid, which will affect further absorption; in addition, the comfort of the material , the softness also affects the consumer's life experience. In addition, fluff pulp is mainly produced in masson pine materials in the Americas. As a forest wood resource, the output is limited, which limits the output of disposable hygiene prod...

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
Patent Type & Authority Patents(China)
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 Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap