阅读说明：本技术 铜抗菌纤维及其制备方法 (Copper antibacterial fiber and preparation method thereof ) 是由 许荣 于 2021-07-20 设计创作，主要内容包括：本发明公开了铜抗菌纤维及其制备方法,属于功能纤维技术领域。它包括重量份计为5～10:88～95的铜抗菌母粒和纤维基料,所述铜抗菌母粒以重量份计,包括以下组分：纳米铜20～35份、PP 20～40份、玻璃纤维1～3份、二氧化硅1～3份、分散剂0.15～1份、表面改性剂0.15～1份。本发明中的纳米铜做防氧化处理,并与PP络合形成无色物质,再进行纺丝以形成白色的铜抗菌纤维,填补市场上的空白,并且纳米铜氧化处理后制成铜抗菌母粒,铜抗菌母粒作为原料直接与纤维基料混合纺丝成长丝纤维,制得后不容易起皱,并且耐洗涤性。(The invention discloses a copper antibacterial fiber and a preparation method thereof, belonging to the technical field of functional fibers. The antibacterial copper master batch comprises 5-10: 88-95 parts by weight of a copper antibacterial master batch and a fiber base material, wherein the copper antibacterial master batch comprises the following components in parts by weight: 20-35 parts of nano copper, 20-40 parts of PP (polypropylene), 1-3 parts of glass fiber, 1-3 parts of silicon dioxide, 0.15-1 part of dispersant and 0.15-1 part of surface modifier. The nano copper is subjected to anti-oxidation treatment and is complexed with PP to form a colorless substance, and then spinning is carried out to form white copper antibacterial fiber, so that the blank in the market is filled, the nano copper is subjected to oxidation treatment to prepare copper antibacterial master batches, the copper antibacterial master batches are directly mixed with a fiber base material as a raw material to be spun into the filament fiber, and the filament fiber is not easy to wrinkle after preparation and is washing-resistant.)

1. Copper antibacterial fiber, characterized in that: the antibacterial copper master batch comprises 5-10: 88-95 parts by weight of a copper antibacterial master batch and a fiber base material, wherein the copper antibacterial master batch comprises the following components in parts by weight: 20-35 parts of nano copper, 20-40 parts of PP (polypropylene), 1-3 parts of glass fiber, 1-3 parts of silicon dioxide, 0.15-1 part of dispersant and 0.15-1 part of surface modifier.

2. The copper antimicrobial fiber according to claim 1, wherein: the fiber base material is any one or combination of any two of terylene, chinlon, nylon, spandex and polypropylene.

3. The copper antimicrobial fiber according to claim 1, wherein: the particle size of the nano copper is 200-260 nm.

4. The preparation method of the copper antibacterial fiber is characterized by comprising the following steps: the method comprises the following steps:

step 1, mixing newly prepared nano copper into oleic acid, uniformly mixing, soaking for 30-40 min for passivation, and drying after passivation to obtain passivated nano copper;

step 2, weighing the nano copper, the silicon dioxide, the dispersing agent and the surface modifier according to the parts by weight, adding the weighed nano copper, the silicon dioxide, the dispersing agent and the surface modifier into deionized water for dispersing and mixing, and drying the mixture after mixing to obtain mixed powder;

step 3, weighing PP and glass fiber in parts by weight, and then placing the PP and the glass fiber in a mixing roll for mixing at the temperature of 130-150 ℃ for 10-20 min to obtain a molten mixture;

step 4, adding mixed powder into the molten mixture, adding 5-10 parts of antioxidant, stirring for 10-20 min at the rotating speed of 2000-3000 r/min in a high-speed stirrer at the temperature of 60-80 ℃, adding 5-10 parts of modifier into the high-speed stirrer during stirring to enable the PP and the mixed powder to generate a complex reaction, and putting the mixture into an extruder for internal granulation after stirring to obtain colorless or white copper antibacterial master batches;

and 5, mixing the copper antibacterial master batch and the fiber base material according to the parts by weight, and feeding the mixture into a spinning machine for spinning to obtain the copper antibacterial fiber.

5. The method for preparing the copper antibacterial fiber according to claim 4, characterized in that: the copper antibacterial fiber is spun by a wet spinning method to prepare filaments.

6. The method for preparing the copper antibacterial fiber according to claim 4, characterized in that: the antioxidant in the step 4 is any one or combination of an amine antioxidant, a phenol antioxidant, a thioester antioxidant and a phosphite antioxidant.

7. The method for preparing the copper antibacterial fiber according to claim 4, characterized in that: the modifier in the step 4 is ureide or unsaturated carboxylic acid.

Technical Field

The invention relates to a copper antibacterial fiber and a preparation method thereof, belonging to the technical field of functional fibers.

Background

With the rapid development of economic society and the continuous improvement of living standard of people, people pay more attention to their health, in daily life, a large amount of bacteria and fungi are hidden around people, and people can quickly reproduce and spread in the human body under proper conditions once contacting the bacteria and fungi, so that various diseases are caused and the health of the human body is damaged. In order to reduce the harm of bacteria and fungi to the health of people, the development of antibacterial textiles is important for improving the health level of people, and textiles with the functions of resisting bacteria, deodorizing, preventing mildew and the like have great potential market demands.

At present, silver or copper and compounds thereof are generally used as antibacterial agents in the market, with the development of scientific research, silver ions are found to be accumulated in a human body to damage the health of the human body, and copper antibacterial agents are more and more emphasized in the industry in recent years due to lower cost and better antibacterial performance, and because copper particles are black or reddish brown and are easy to oxidize, the color of the prepared fiber is generally brown, and at present, white copper antibacterial fibers are not available in the market and are still required to be improved in washing resistance.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a copper antibacterial fiber and a preparation method thereof, which solves the problems that no white copper antibacterial fiber exists in the market at present and the washing fastness is still to be improved.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the copper antibacterial fiber comprises 5-10: 88-95 parts by weight of copper antibacterial master batch and a fiber base material, wherein the copper antibacterial master batch comprises the following components in parts by weight: 20-35 parts of nano copper, 20-40 parts of PP (polypropylene), 1-3 parts of glass fiber, 1-3 parts of silicon dioxide, 0.15-1 part of dispersant and 0.15-1 part of surface modifier.

As a preferable example, the fiber base material is any one or any two of terylene, chinlon, nylon, spandex and polypropylene.

As a preferable example, the particle size of the nano copper is 200-260 nm.

The preparation method of the copper antibacterial fiber comprises the following steps:

step 1, mixing newly prepared nano copper into oleic acid, uniformly mixing, soaking for 30-40 min for passivation, and drying after passivation to obtain passivated nano copper;

step 2, weighing the nano copper, the silicon dioxide, the dispersing agent and the surface modifier according to the parts by weight, adding the weighed nano copper, the silicon dioxide, the dispersing agent and the surface modifier into deionized water for dispersing and mixing, and drying the mixture after mixing to obtain mixed powder;

step 3, weighing PP and glass fiber in parts by weight, and then placing the PP and the glass fiber in a mixing roll for mixing at the temperature of 130-150 ℃ for 10-20 min to obtain a molten mixture;

step 4, adding mixed powder into the molten mixture, adding 5-10 parts of antioxidant, stirring for 10-20 min at the rotating speed of 2000-3000 r/min in a high-speed stirrer at the temperature of 60-80 ℃, adding 5-10 parts of modifier into the high-speed stirrer during stirring to enable the PP and the mixed powder to generate a complex reaction, and putting the mixture into an extruder for internal granulation after stirring to obtain colorless or white copper antibacterial master batches;

and 5, mixing the copper antibacterial master batch and the fiber base material according to the parts by weight, and feeding the mixture into a spinning machine for spinning to obtain the copper antibacterial fiber.

As a preferable example, the copper antibacterial fiber is spun by a wet spinning method to prepare a filament.

As a preferable example, the antioxidant in the step 4 is any one or any combination of two of amine antioxidant, phenol antioxidant, thioester antioxidant and phosphite antioxidant.

As a preferred example, the modifier in the step 4 is an acylurea or an unsaturated carboxylic acid.

The invention has the beneficial effects that:

1. the preparation method is simple, low in cost, environment-friendly and pollution-free, and is suitable for industrial production;

2. the nano copper is subjected to anti-oxidation treatment and is complexed with PP to form a colorless substance, and then spinning is carried out to form a white copper antibacterial fiber, so that the blank in the market is filled;

3. the nano copper is oxidized to prepare the copper antibacterial master batch, the copper antibacterial master batch is directly mixed with the fiber base material as a raw material to be spun into the filament fiber, and the filament fiber is not easy to wrinkle after being prepared and has strong washing resistance.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the embodiment.

Example one

The copper antibacterial fiber comprises 10:88 parts by weight of copper antibacterial master batch and a fiber base material, wherein the copper antibacterial master batch comprises the following components in parts by weight: 35 parts of nano copper, 40 parts of PP (polypropylene), 3 parts of glass fiber, 3 parts of silicon dioxide, 1 part of dispersant and 1 part of surface modifier.

The fiber base material is terylene.

The particle size of the nano copper is 250 nm.

The preparation method of the copper antibacterial fiber comprises the following steps:

step 1, mixing newly prepared nano copper into oleic acid, uniformly mixing, soaking for 40min for passivation, and drying after passivation to obtain passivated nano copper;

step 2, weighing the nano copper, the silicon dioxide, the dispersing agent and the surface modifier according to the parts by weight, adding the weighed nano copper, the silicon dioxide, the dispersing agent and the surface modifier into deionized water for dispersing and mixing, and drying the mixture after mixing to obtain mixed powder;

step 3, weighing PP and glass fiber in parts by weight, and then placing the PP and the glass fiber in a mixing roll for mixing at the temperature of 150 ℃ for 20min to obtain a molten mixture;

step 4, adding mixed powder into the molten mixture, adding 10 parts of antioxidant, stirring for 20min at the rotating speed of 3000r/min in a high-speed stirrer at the temperature of 80 ℃, adding 10 parts of modifier into the high-speed stirrer during stirring to enable the PP and the mixed powder to generate a complex reaction, and after stirring, putting the mixture into an extruder for granulation to obtain colorless copper antibacterial master batches;

and 5, mixing the copper antibacterial master batch and the fiber base material according to the parts by weight, and feeding the mixture into a spinning machine for spinning to obtain the copper antibacterial fiber.

The copper antibacterial fiber is spun by a wet spinning method to prepare filaments.

And 4, the antioxidant in the step 4 is an amine antioxidant.

In the step 4, the modifier is ureide.

Example two

The copper antibacterial fiber comprises 10:90 parts by weight of copper antibacterial master batch and a fiber base material, wherein the copper antibacterial master batch comprises the following components in parts by weight: 30 parts of nano copper, 30 parts of PP, 2 parts of glass fiber, 2 parts of silicon dioxide, 0.75 part of dispersant and 0.75 part of surface modifier.

The fiber base material is nylon.

The particle size of the nano copper is 250 nm.

The preparation method of the copper antibacterial fiber comprises the following steps:

step 1, mixing newly prepared nano copper into oleic acid, uniformly mixing, soaking for 35min for passivation, and drying after passivation to obtain passivated nano copper;

step 2, weighing the nano copper, the silicon dioxide, the dispersing agent and the surface modifier according to the parts by weight, adding the weighed nano copper, the silicon dioxide, the dispersing agent and the surface modifier into deionized water for dispersing and mixing, and drying the mixture after mixing to obtain mixed powder;

step 3, weighing PP and glass fiber in parts by weight, and then placing the PP and the glass fiber in a mixing roll for mixing at the temperature of 140 ℃ for 15min to obtain a molten mixture;

step 4, adding mixed powder into the molten mixture, adding 8 parts of antioxidant, stirring for 15min at the rotating speed of 3000r/min in a high-speed stirrer at the temperature of 70 ℃, adding 7 parts of modifier into the high-speed stirrer during stirring to enable the PP and the mixed powder to generate a complex reaction, and after stirring, putting the mixture into an extruder for granulation to obtain colorless copper antibacterial master batches;

and 5, mixing the copper antibacterial master batch and the fiber base material according to the parts by weight, and feeding the mixture into a spinning machine for spinning to obtain the copper antibacterial fiber.

The copper antibacterial fiber is spun by a wet spinning method to prepare filaments.

And 4, the antioxidant is a phenolic antioxidant.

In the step 4, the modifier is ureide.

EXAMPLE III

The copper antibacterial fiber comprises 10:95 parts by weight of copper antibacterial master batch and a fiber base material, wherein the copper antibacterial master batch comprises the following components in parts by weight: 20 parts of nano copper, 20 parts of PP (polypropylene), 1 part of glass fiber, 1 part of silicon dioxide, 0.15 part of dispersant and 0.15 part of surface modifier.

The fiber base material is nylon.

The particle size of the nano copper is 200 nm.

The preparation method of the copper antibacterial fiber comprises the following steps:

step 1, mixing newly prepared nano copper into oleic acid, uniformly mixing, soaking for 30min for passivation, and drying after passivation to obtain passivated nano copper;

step 2, weighing the nano copper, the silicon dioxide, the dispersing agent and the surface modifier according to the parts by weight, adding the weighed nano copper, the silicon dioxide, the dispersing agent and the surface modifier into deionized water for dispersing and mixing, and drying the mixture after mixing to obtain mixed powder;

step 3, weighing PP and glass fiber in parts by weight, and then placing the PP and the glass fiber in a mixing roll for mixing at the temperature of 130 ℃ for 10min to obtain a molten mixture;

step 4, adding mixed powder into the molten mixture, adding 5 parts of antioxidant, stirring for 10min at the rotating speed of 2000r/min in a high-speed stirrer at the temperature of 60 ℃, adding 5 parts of modifier into the high-speed stirrer in the stirring process to enable the PP and the mixed powder to generate a complex reaction, and after stirring, putting the mixture into an extruder for granulation to obtain white copper antibacterial master batches;

and 5, mixing the copper antibacterial master batch and the fiber base material according to the parts by weight, and feeding the mixture into a spinning machine for spinning to obtain the copper antibacterial fiber.

The copper antibacterial fiber is spun by a wet spinning method to prepare filaments.

And 4, the antioxidant in the step 4 is any one or combination of any two of amine antioxidant, phenol antioxidant, thioester antioxidant and phosphite antioxidant.

In the step 4, the modifier is unsaturated carboxylic acid.

In the invention, ureide substances such as hydantoin or sulfonylurea compounds are introduced into the side chain of PP molecules, or added unsaturated carboxylic acid is contacted with the free radical of PP, so that the reaction activity is higher, PP grafted free radicals are formed, and the complexing effect with nano-copper can be realized to obtain colorless or white precipitates.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.