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Polyurethane foam dressing and preparation method thereof

A technology of polyurethane foam and foaming agent, which is used in medical science, absorbent pads, bandages, etc., can solve the problem of inability to achieve long-term bacteriostasis, and achieve the effect of improving antibacterial and anti-inflammatory effects, good air permeability, and promoting wound healing.

Active Publication Date: 2022-08-05
山东万容生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyurethane dressings cannot achieve long-term antibacterial

Method used

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  • Polyurethane foam dressing and preparation method thereof
  • Polyurethane foam dressing and preparation method thereof
  • Polyurethane foam dressing and preparation method thereof

Examples

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Effect test

preparation example Construction

[0035] A preparation method of a polyurethane foam dressing, comprising the following steps:

[0036] Mix usnic acid, grapefruit essential oil, shea butter and yarrow essential oil, and gelatinize at 100-120° C. for 10-20 min. During the gelatinization process, keep stirring at 40-50 rpm to obtain a premix; Ethylene glycol, toluene diisocyanate, bamboo fiber and foaming agent are mixed, and glycerin, benzoyl peroxide and deionized water are added. Stir at 5000rpm for 30-50s, then place it in a foaming mold at 60-70°C for 30-40min, then perform plasma surface modification treatment for 50-100s, demould, and let stand for 1-2h under ultraviolet light conditions, that is, A polyurethane foam dressing is obtained.

[0037] Mix usnic acid, grapefruit essential oil, shea butter and yarrow essential oil, and gelatinize at 100-120℃ for 10-20min. Gelatinization can reduce the viscosity of each component, so that the mixing effect of several components is better. During gelatinizatio...

Embodiment 1

[0041] A polyurethane foam dressing comprising the following components: 20g polyethylene glycol, 15g toluene diisocyanate, 10g bamboo fiber, 5g usnic acid, 10g grapefruit essential oil, 5g shea butter, 1g yarrow essential oil and 1g foam agent.

[0042] A preparation method of a polyurethane foam dressing, comprising the following steps:

[0043] Preparation of premix: Usnic acid, grapefruit essential oil, shea butter and yarrow essential oil were mixed and gelatinized at 100°C for 10 min.

[0044] Preparation of polyurethane foam dressing: Mix polyethylene glycol, toluene diisocyanate, bamboo fiber and foaming agent, add glycerin, benzoyl peroxide and deionized water, at room temperature, first stir at 100 rpm for 5 minutes, then add the premix Stir at 4500 rpm for 30 s, then place in a foaming mold to keep warm, and demold.

[0045] In this embodiment, the foaming agent is an alkyl polyglycoside.

Embodiment 2

[0047] A polyurethane foam dressing comprising the following components: 30g polyethylene glycol, 25g toluene diisocyanate, 20g bamboo fiber, 15g usnic acid, 25g grapefruit essential oil, 10g shea butter, 5g yarrow essential oil and 5g foam agent.

[0048] A preparation method of a polyurethane foam dressing, comprising the following steps:

[0049] Preparation of premix: Usnic acid, grapefruit essential oil, shea butter and yarrow essential oil were mixed and gelatinized at 120°C for 20 min.

[0050] Preparation of polyurethane foam dressing: Mix polyethylene glycol, toluene diisocyanate, bamboo fiber and foaming agent, add glycerin, benzoyl peroxide and deionized water, at room temperature, first stir at 150 rpm for 10 minutes, then add the premix Stir at 5000rpm for 50s, then place in a foaming mold to keep warm, and demold.

[0051] In this embodiment, the foaming agent is tea saponin.

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Abstract

The invention provides a polyurethane foam dressing and a preparation method thereof, and relates to the technical field of medical dressings. The polyurethane foam dressing is prepared from the following components in parts by weight: 20 to 30 parts of polyethylene glycol, 15 to 25 parts of toluene diisocynate, 10 to 20 parts of bamboo fiber, 5 to 15 parts of usnic acid, 10 to 25 parts of grapefruit essential oil, 5 to 10 parts of shea butter, 1 to 5 parts of yarrow essential oil and 1 to 5 parts of a foaming agent. The polyurethane foam dressing has a long-acting bacteriostatic effect, can repair skin injury and promote wound healing, is easy to remove and does not cause secondary injury. The preparation method is simple, the synergistic effect of all the components is improved, the use effect of the dressing is better, in addition, the preparation operation is simple and rapid, and the dressing is suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of medical dressings, in particular to a polyurethane foam dressing and a preparation method thereof. Background technique [0002] As the largest organ of the human body, the skin plays an important role in sensing external stimuli, regulating body temperature, regulating water evaporation loss, protecting various tissues and organs in the body from physical and chemical damage, and resisting the invasion of pathogenic microorganisms. When the skin is damaged in a large area, it will cause many local and even systemic problems, and even life-threatening in severe cases. Therefore, it is extremely important to cover the surface of the skin with medical dressings for repair in the case of large-area defects or difficult to heal. [0003] Medical dressings are medical hygienic materials used to temporarily cover various wounds and wound surfaces. They can be used as a temporary substitute for the skin to prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/26A61L15/20A61L15/40A61L15/28A61L15/24A61L15/42A61L15/46
CPCA61L15/26A61L15/20A61L15/40A61L15/28A61L15/24A61L15/425A61L15/42A61L15/46A61L2300/30A61L2300/404A61L2300/41A61L2300/412A61L2400/04A61L2300/602A61L2300/216A61L2300/236A61L2400/18C08L75/04C08L71/02C08L5/08C08L1/284C08L29/04C08L5/00Y02W90/10
Inventor 徐会军卢聪聪宋雪卞婉君
Owner 山东万容生物科技有限公司
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