阅读说明：本技术 一种环保可降解一次性尿袋及其制备方法 (Environment-friendly degradable disposable diaper bag and preparation method thereof ) 是由 赵越 于 2019-07-31 设计创作，主要内容包括：本发明提供一种环保可降解一次性尿袋及其制备方法,涉及医疗用品生产技术领域。所述一次性尿袋由以下重量份的原料制成：聚乙烯40-50份、苯乙烯-苯基乙烯基酮共聚物20-25份、羧酸铁乙烯-一氧化碳共聚物15-20份、苯甲酮6-8份、安息香二甲醚3-5份、二硫代氨基甲酸锌5-7份、二茂铁2-4份、聚羟基脂肪酸酯4-6份、聚乙内酯5-8份、聚丁烯琥珀酸酯3-5份、蛋白质5-7份、壳聚糖2-4份。本发明克服了现有技术的不足,能够有效提升一次性尿袋的降解速度,使其在日照或微生物的作用下逐渐分解为低分子化合物,不仅有利于植物的生长,还可改良土壤环境,减少环境污染,一次性尿袋降解效果好,适宜推广。(The invention provides an environment-friendly degradable disposable diaper bag and a preparation method thereof, and relates to the technical field of medical supplies. The disposable diaper is prepared from the following raw materials in parts by weight: 40-50 parts of polyethylene, 20-25 parts of styrene-phenyl vinyl ketone copolymer, 15-20 parts of carboxylic acid iron ethylene-carbon monoxide copolymer, 6-8 parts of benzophenone, 3-5 parts of benzoin dimethyl ether, 5-7 parts of zinc dithiocarbamate, 2-4 parts of ferrocene, 4-6 parts of polyhydroxyalkanoate, 5-8 parts of polyethyl lactone, 3-5 parts of polybutene succinate, 5-7 parts of protein and 2-4 parts of chitosan. The invention overcomes the defects of the prior art, can effectively improve the degradation speed of the disposable urine bag, enables the disposable urine bag to be gradually decomposed into low molecular compounds under the action of sunlight or microorganisms, is beneficial to the growth of plants, can improve the soil environment, reduces the environmental pollution, has good degradation effect of the disposable urine bag, and is suitable for popularization.)

1. The environment-friendly degradable disposable diaper is characterized in that the disposable diaper is prepared from the following raw materials in parts by weight: 40-50 parts of polyethylene, 20-25 parts of styrene-phenyl vinyl ketone copolymer, 15-20 parts of carboxylic acid iron ethylene-carbon monoxide copolymer, 1-2 parts of coupling agent, 6-8 parts of benzophenone, 3-5 parts of benzoin dimethyl ether, 5-7 parts of zinc dithiocarbamate, 2-4 parts of ferrocene, 4-6 parts of polyhydroxyalkanoate, 5-8 parts of polyethylene lactone, 3-5 parts of polybutylene succinate, 5-7 parts of protein, 2-4 parts of chitosan, 2-4 parts of solubilizer and 3-5 parts of plasticizer.

2. The environmentally friendly degradable disposable diaper bag of claim 1, wherein the coupling agent is KH 550.

3. The environmentally friendly degradable disposable diaper bag of claim 1, wherein the solubilizer is formed by mixing polyethylene glycol and sodium salicylate in a mass ratio of 3: 2.

4. The environmentally degradable disposable diaper bag of claim 1, wherein the plasticizer is a mixture of dimethyl phthalate, diisobutyl phthalate and dicyclohexyl phthalate at a mass ratio of 5:4: 1.

5. The preparation method of the environment-friendly degradable disposable diaper is characterized by comprising the following steps:

(1) mixing styrene-phenyl vinyl ketone copolymer and iron carboxylate ethylene-carbon monoxide copolymer, adding the mixture into an internal mixer, heating to 240 ℃, keeping the temperature, mixing for 1-1.5h, adding a coupling agent, simultaneously boosting the pressure to 12-15MPa, maintaining the pressure, crosslinking for 40-60min, recovering to normal pressure, adding polyethylene, and continuing to keep the temperature, mixing for 2-3h to obtain a base material for later use;

(2) mixing benzophenone, benzoin dimethyl ether, zinc dithiocarbamate and ferrocene, adding into a stirrer, heating to 150-170 ℃, keeping the temperature and stirring for 0.5-1h, rapidly cooling to normal temperature, placing the mixture into a refrigerator, storing at low temperature of-20 ℃ to-15 ℃ for 1-1.5h, grinding at low temperature into powder, and continuously storing at low temperature for 1.5-2h to obtain an auxiliary material A for later use;

(3) adding protein and chitosan into a ball mill for mixing and grinding, then adding polyhydroxyalkanoate, polyethylene lactone and polybutylene succinate, pouring the mixture into an ultrasonic oscillator, heating to 180 ℃ and 200 ℃, and carrying out ultrasonic oscillation for 30-50min to obtain an auxiliary material B for later use;

(4) mixing the prepared auxiliary material A and the auxiliary material B, adding the mixture into the internal mixer in the step (1), adding a solubilizer and a plasticizer, and continuously keeping the temperature and mixing for 4-6 hours to obtain a raw material for later use;

(5) and (3) putting the prepared raw materials into an extruder, extruding and forming, and naturally cooling to room temperature to obtain the product.

6. The method for preparing the environment-friendly degradable disposable diaper bag as claimed in claim 5, wherein the rotation speed of the heat-preserving mixing in the step (1) is 130-150r/min, and the rotation speed of the heat-preserving stirring in the step (2) is 120-140 r/min.

7. The method for preparing the environment-friendly degradable disposable diaper bag according to claim 5, wherein the low temperature grinding in the step (2) is performed until the disposable diaper bag is sieved by a 200-mesh sieve, and the mixing grinding in the step (3) is performed until the disposable diaper bag is sieved by a 80-mesh sieve.

8. The method of claim 5 for making an environmentally friendly degradable disposable diaper bagThe preparation method is characterized in that the frequency of ultrasonic oscillation in the step (3) is 25-30kHz, and the ultrasonic sound intensity is 2-3W/cm²。

Technical Field

The invention relates to the technical field of medical product production, in particular to an environment-friendly degradable disposable diaper and a preparation method thereof.

Background

The urine bag is a urine collecting tool for some patients with dysuria, such as urinary incontinence, paraplegia, long-term bedridden and the like. Generally comprises a plastic bag, a drainage catheter, a hanging ring, a pagoda joint, a urine sleeve, a liquid discharge pipe and a plug. Urine bags are generally disposable and require periodic replacement. Indwelling catheterization brings about a series of complications, especially urinary infection.

The urine bag usually uses resin materials such as polyethylene as main materials, and the materials have extremely high stability, so the materials are also extremely difficult to degrade in natural environment. Meanwhile, the disposable urine bag is a disposable product, so that the production capacity is generally high, and the disposable urine bag brings convenience to patients, and simultaneously produces huge environmental pollution to the normal work and life of people. Therefore, an environmentally friendly degradable disposable diaper is a hot spot of research by researchers.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the environment-friendly degradable disposable urine bag and the preparation method thereof, the invention overcomes the defects of the prior art, can effectively improve the degradation speed of the disposable urine bag, and gradually decomposes the disposable urine bag into low molecular compounds under the action of sunlight or microorganisms, thereby being beneficial to the growth of plants, improving the soil environment, reducing the environmental pollution, having good degradation effect of the disposable urine bag and being suitable for popularization.

In order to achieve the above purpose, the technical scheme of the invention is realized by the following technical scheme:

the environment-friendly degradable disposable diaper is prepared from the following raw materials in parts by weight: 40-50 parts of polyethylene, 20-25 parts of styrene-phenyl vinyl ketone copolymer, 15-20 parts of carboxylic acid iron ethylene-carbon monoxide copolymer, 1-2 parts of coupling agent, 6-8 parts of benzophenone, 3-5 parts of benzoin dimethyl ether, 5-7 parts of zinc dithiocarbamate, 2-4 parts of ferrocene, 4-6 parts of polyhydroxyalkanoate, 5-8 parts of polyethylene lactone, 3-5 parts of polybutylene succinate, 5-7 parts of protein, 2-4 parts of chitosan, 2-4 parts of solubilizer and 3-5 parts of plasticizer.

Preferably, the coupling agent is KH 550.

Preferably, the solubilizer is formed by mixing polyethylene glycol and sodium salicylate according to the mass ratio of 3: 2.

Preferably, the plasticizer is prepared by mixing dimethyl phthalate, diisobutyl phthalate and dicyclohexyl phthalate in a mass ratio of 5:4: 1.

The preparation method of the disposable diaper comprises the following steps:

(1) mixing styrene-phenyl vinyl ketone copolymer and iron carboxylate ethylene-carbon monoxide copolymer, adding the mixture into an internal mixer, heating to 240 ℃, keeping the temperature, mixing for 1-1.5h, adding a coupling agent, simultaneously boosting the pressure to 12-15MPa, maintaining the pressure, crosslinking for 40-60min, recovering to normal pressure, adding polyethylene, and continuing to keep the temperature, mixing for 2-3h to obtain a base material for later use;

(2) mixing benzophenone, benzoin dimethyl ether, zinc dithiocarbamate and ferrocene, adding into a stirrer, heating to 150-170 ℃, keeping the temperature and stirring for 0.5-1h, rapidly cooling to normal temperature, placing the mixture into a refrigerator, storing at low temperature of-20 ℃ to-15 ℃ for 1-1.5h, grinding at low temperature into powder, and continuously storing at low temperature for 1.5-2h to obtain an auxiliary material A for later use;

(3) adding protein and chitosan into a ball mill for mixing and grinding, then adding polyhydroxyalkanoate, polyethylene lactone and polybutylene succinate, pouring the mixture into an ultrasonic oscillator, heating to 180 ℃ and 200 ℃, and carrying out ultrasonic oscillation for 30-50min to obtain an auxiliary material B for later use;

(4) mixing the prepared auxiliary material A and the auxiliary material B, adding the mixture into the internal mixer in the step (1), adding a solubilizer and a plasticizer, and continuously keeping the temperature and mixing for 4-6 hours to obtain a raw material for later use;

(5) and (3) putting the prepared raw materials into an extruder, extruding and forming, and naturally cooling to room temperature to obtain the product.

Preferably, the rotation speed of the heat preservation mixing in the step (1) is 130-150r/min, and the rotation speed of the heat preservation stirring in the step (2) is 120-140 r/min.

Preferably, the low-temperature grinding in the step (2) is carried out until the mixture is sieved by a 200-mesh sieve, and the mixing and grinding in the step (3) is carried out until the mixture is sieved by a 80-mesh sieve.

Preferably, the frequency of the ultrasonic vibration in the step (3) is 25-30kHz, and the ultrasonic sound intensity is 2-3W/cm²。

The invention provides an environment-friendly degradable disposable diaper and a preparation method thereof, and compared with the prior art, the disposable diaper has the advantages that:

(1) the invention adds the styrene-phenyl vinyl ketone copolymer and the carboxylic acid iron ethylene-carbon monoxide copolymer, and the styrene-phenyl vinyl ketone copolymer and the carboxylic acid iron ethylene-carbon monoxide copolymer are mutually crosslinked under the conditions of high temperature and high pressure, so that the photodegradable plastic base material can be prepared by utilizing the characteristics of the styrene-phenyl vinyl ketone copolymer and the carboxylic acid iron ethylene-carbon monoxide copolymer, the degradation speed of the disposable urine bag is further effectively improved, the prepared urine bag is gradually decomposed under the sunshine after being used, and the degradation speed is high;

(2) the invention also adds benzophenone, benzoin dimethyl ether, zinc dithiocarbamate and ferrocene, and can be matched with the base material by the modes of heat preservation stirring, low-temperature preservation, low-temperature grinding and low-temperature preservation, so as to further induce the photodegradation reaction of the urine bag under the illumination, further accelerate the degradation speed of the urine bag and reduce the environmental pollution;

(3) the invention also adds protein, chitosan, polyhydroxyalkanoate, polyethylene lactone and polybutylene succinate, the high molecular material protein and chitosan are mixed and ground firstly, and then are mixed with other components for ultrasonic oscillation, so that the prepared urine bag can be completely decomposed into low molecular compounds under the action of microorganisms, the degradation product of the urine bag is beneficial to the growth of plants, the soil environment can be improved, the degradation effect of the disposable urine bag is good, and the disposable urine bag is suitable for popularization.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.