Antibacterial and anti-mosquito XPE foam material and preparation method thereof

Abstract

The invention discloses an antibacterial anti-mosquito XPE foam material and a preparation method thereof, the material comprises the following components: polyethylene resin, an antibacterial master batch, an anti-mosquito master batch, a foaming agent master batch and a stabilizer, an antibacterial agent in the antibacterial master batch is nano-silver particles, an anti-mosquito agent in the anti-mosquito master batch is lemon eucalyptus oil, and an anti-mosquito agent in the foaming agent master batch is nano-silver particles. A foaming agent in the foaming agent master batch is azodicarbonamide, and a stabilizing agent is calcium stearate; by adding the mixture of nano-silver and quaternary ammonium salt as the antibacterial agent, growth of bacteria can be effectively inhibited, and the antibacterial property of the material is improved, so that the service life of the material is prolonged; the mixture of the lemon eucalyptus oil and the DEET is used as the anti-mosquito agent, so that mosquitoes can be effectively repelled, troubles caused by mosquito bites are reduced, and the mosquito repellent is particularly suitable for outdoor use or application in mosquito-prone areas.

Description

Technical Field

[0001] The invention relates to the technical field of polymer foam materials, in particular to an antibacterial and mosquito-proof XPE foam material and a preparation method thereof. Background Art

[0002] XPE material, namely chemically cross-linked polyethylene foam material, is a new type of environmentally friendly material. XPE is made of low-density polyethylene resin plus cross-linking agent and foaming agent through high-temperature continuous foaming. It has excellent durability, light resistance, physical impact resistance and other characteristics, and is chemically stable, not easy to decompose, odorless, and has good elasticity. Its fine independent bubble structure can effectively reduce the energy exchange caused by air convection, and has the properties of insulation, sound absorption, molding, and cushioning. It is non-toxic, odorless, resistant to drugs, oil, acid, halogen and other types of chemicals. It is very easy to process, can be cut arbitrarily, and can be bonded to a variety of materials. XPE is the preferred material for manufacturing crawling mats, sound insulation layers, thermal insulation layers, and car mats. It is also widely used in sports protective gear, handbags and luggage, aerospace, construction, footwear, toys, oil pipeline insulation and other fields.

[0003] However, the traditional XPE foam material has limited performance in antibacterial and anti-mosquito. With the improvement of people's living standards and the pursuit of a healthy environment, the demand for antibacterial and anti-mosquito functions is increasing. Especially in outdoor products, tents, mats and other application scenarios, antibacterial and anti-mosquito performance is particularly important. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the traditional XPE foam material has limited performance in antibacterial and anti-mosquito functions, and the demand for antibacterial and anti-mosquito functions is increasing with the improvement of people's living standards and the pursuit of a healthy environment.

[0005] The present invention achieves the above-mentioned purpose through the following technical scheme: to provide an antibacterial and mosquito-proof XPE foaming material, the material comprises the following components: polyethylene resin, antibacterial masterbatch, mosquito-proof masterbatch, foaming agent masterbatch and stabilizer, the antibacterial agent in the antibacterial masterbatch is nano silver particles, the mosquito-proof masterbatch is lemon eucalyptus oil, the foaming agent in the foaming agent masterbatch is azodicarbonamide, and the stabilizer is calcium stearate; the addition amount of the antibacterial agent in the antibacterial masterbatch is the amount of the polyethylene resin. The amount of the mosquito repellent in the mosquito repellent masterbatch is 0.1%-1.0% of the total mass of the polyethylene resin, and the amount of the foaming agent in the foaming agent masterbatch is 1.0% to 3.0% of the total mass of the polyethylene resin, and the amount of the stabilizer is 0.5% to 1.5% of the total mass of the polyethylene resin.

[0006] Furthermore, the polyethylene resin is a mixture of high-density polyethylene (HDPE) and low-density polyethylene (LDPE), and the mass ratio of HDPE to LDPE in the mixture is 3:7.

[0007] Furthermore, the antibacterial agent is a mixture of nanosilver and quaternary ammonium salt, and the mass ratio of nanosilver to quaternary ammonium salt in the mixture is 1:1 to 2:1.

[0008] Furthermore, the mosquito repellent is a mixture of DEET and lemon eucalyptus oil, and the mass ratio of DEET to lemon eucalyptus oil in the mixture is 1:1 to 3:1.

[0009] Furthermore, the foaming agent is a mixture of azodicarbonamide and sodium bicarbonate, and the mass ratio of AC to sodium bicarbonate in the mixture is 1:1 to 2:1.

[0010] Furthermore, the stabilizer is a mixture of calcium stearate and an antioxidant, and the mass ratio of calcium stearate to antioxidant in the mixture is 1:1 to 3:1.

[0011] Furthermore, a method for preparing an antibacterial and anti-mosquito XPE foam material comprises the following steps: S1, mixing a foaming agent and a polyethylene resin in a ratio of 1:2, mixing an anti-mosquito agent and a polyethylene in a ratio of 1:4, and mixing an antibacterial agent and a polyethylene resin in a ratio of 1:10, adding them to a mixer in batches for mixing, the mixing temperature is 110-120°C, and the time is 10min-20min; S2, the materials obtained after the internal mixing are plasticized, extruded and granulated in a single screw granulator in batches, the body temperature of the extruder is set to 110 ℃ -150 ℃, the screw speed is 10-20r / min, and the foaming agent masterbatch, mosquito repellent masterbatch and antibacterial masterbatch are respectively obtained; S3, polyethylene resin, foaming agent masterbatch, mosquito repellent masterbatch, antibacterial masterbatch, and stabilizer are mixed in proportion, and extruded into sheets through a single screw extruder, with a screw speed of 20-30r / min and an extrusion temperature of 120-125°C; S4. The extruded sheet is calendered, pulled, cooled and then enters a foaming furnace for foaming. The temperature of the foaming furnace is set at 180-220°C. After foaming, the material is cooled and rolled to obtain an antibacterial and insect repellent XPE foaming material.

[0012] Furthermore, the temperature of the extruder is controlled at 150-180° C., and the screw speed of the extruder is 50-100 rpm.

[0013] Furthermore, the antibacterial and anti-mosquito XPE foam material is cooled by water at a temperature of 10-20°C.

[0014] Furthermore, a certain amount of lubricant is added to S3, and the lubricant is selected from one or more of stearic acid and polyethylene glycol, and the added amount of the lubricant is 0.1% to 0.5% of the total mass of the polyethylene resin.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By adding a mixture of nano-silver and quaternary ammonium salts as an antibacterial agent, the growth of bacteria can be effectively inhibited, the antibacterial properties of the material can be improved, and the service life of the material can be extended; the anti-mosquito effect is significant: using a mixture of lemon eucalyptus oil and DEET as a mosquito repellent can effectively repel mosquitoes and reduce the troubles caused by mosquito bites. It is especially suitable for outdoor use or in mosquito-prone areas.

[0016] 2. Using a mixture of azodicarbonamide and sodium bicarbonate as a foaming agent can effectively promote the foaming process of the material, increase the foaming ratio, and make the material have better cushioning performance and resilience; using a mixture of calcium stearate and an antioxidant as a stabilizer can effectively improve the thermal stability and antioxidant properties of the material, and prevent the material from degradation and aging during processing and use.

[0017] 3. By optimizing the temperature and screw speed of the extruder and adopting water cooling, the processing performance of the material can be effectively improved to ensure that the material maintains a good shape and structure during the extrusion and foaming process; Environmental protection and safety are improved: the use of materials such as lemon eucalyptus oil and nano silver from natural sources reduces the harm to the environment and human body, improves the environmental protection and safety performance of the material, and is suitable for a variety of application scenarios. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Example 1 An antibacterial and mosquito-proof XPE foaming material, comprising the following components: polyethylene resin, antibacterial masterbatch, mosquito-proof masterbatch, foaming agent masterbatch and stabilizer, wherein the antibacterial agent in the antibacterial masterbatch is nano silver particles, the mosquito-proof agent in the mosquito-proof masterbatch is lemon eucalyptus oil, the foaming agent in the foaming agent masterbatch is azodicarbonamide, and the stabilizer is calcium stearate; the antibacterial agent in the antibacterial masterbatch is added in an amount of 0.5% to 2.0% of the total mass of the polyethylene resin, and the two are mixed and granulated to obtain the material; the mosquito-proof agent in the mosquito-proof masterbatch is added in an amount of 0.1% to 1.0% of the total mass of the polyethylene resin, and the two are mixed and granulated to obtain the material; the foaming agent in the foaming agent masterbatch is added in an amount of 1.0% to 3.0% of the total mass of the polyethylene resin, and the two are mixed and granulated to obtain the material; the stabilizer is added in an amount of 0.5% to 1.5% of the total mass of the polyethylene resin; The polyethylene resin is a mixture of high-density polyethylene (HDPE) and low-density polyethylene (LDPE), and the mass ratio of HDPE to LDPE in the mixture is 3:7; The antibacterial agent is a mixture of nano silver and quaternary ammonium salt, wherein the mass ratio of nano silver to quaternary ammonium salt in the mixture is 1:1 to 2:1; The mosquito repellent is a mixture of DEET and lemon eucalyptus oil, wherein the mass ratio of DEET to lemon eucalyptus oil in the mixture is 1:1 to 3:1; The foaming agent is a mixture of azodicarbonamide and sodium bicarbonate, wherein the mass ratio of AC to sodium bicarbonate in the mixture is 1:1 to 2:1; The stabilizer is a mixture of calcium stearate and an antioxidant, wherein the mass ratio of calcium stearate to antioxidant in the mixture is 1:1 to 3:1; A method for preparing an antibacterial and anti-mosquito XPE foam material, comprising the following steps: S1, mixing a foaming agent and a polyethylene resin in a ratio of 1:2, mixing a mosquito repellent and a polyethylene in a ratio of 1:4, and mixing an antibacterial agent and a polyethylene resin in a ratio of 1:10, adding the mixture into a mixer in batches for mixing, the mixing temperature is 110°C, and the mixing time is 20 minutes; S2, the materials obtained after the internal mixing were plasticized, extruded and granulated in a single screw granulator in batches, the body temperature of the extruder was set to 110 ° C, the screw speed was 10r / min, and the foaming agent masterbatch, mosquito repellent masterbatch and antibacterial masterbatch were obtained respectively; S3, polyethylene resin, foaming agent masterbatch, mosquito repellent masterbatch, antibacterial masterbatch, stabilizer are mixed in proportion, and extruded into sheets through a single screw extruder, with a screw speed of 20r / min and an extrusion temperature of 120°C; S4. The extruded sheet is calendered, pulled, cooled and then enters the foaming furnace for foaming. The temperature of the foaming furnace is set to 180°C. After the material is foamed, it is cooled and rolled to obtain the antibacterial and mosquito repellent XPE foaming material.

[0021] The temperature of the extruder is controlled at 150-180°C, and the screw speed of the extruder is 50-100 rpm.

[0022] The cooling method of the antibacterial and anti-mosquito XPE foam material is water cooling, and the water cooling temperature is 10-20℃.

[0023] A certain amount of lubricant is also added to S3. The lubricant is selected from one or more of stearic acid and polyethylene glycol. The amount of lubricant added is 0.1% to 0.5% of the total mass of the polyethylene resin.

[0024] Example 2 A method for preparing an antibacterial and mosquito-proof XPE foam material comprises the following steps: S1. Mix the foaming agent and polyethylene resin in a ratio of 1:2, the mosquito repellent and polyethylene in a ratio of 1:4, and the antibacterial agent and polyethylene resin in a ratio of 1:10, and add them to the internal mixer in batches for internal mixing. The mixing temperature is 113°C and the time is 15 minutes; S2, the materials obtained after the internal mixing were plasticized, extruded and granulated in a single screw granulator in batches, the body temperature of the extruder was set to 120 ° C, the screw speed was 15r / min, and the foaming agent masterbatch, mosquito repellent masterbatch and antibacterial masterbatch were obtained respectively; S3, polyethylene resin, foaming agent masterbatch, mosquito repellent masterbatch, antibacterial masterbatch, stabilizer are mixed in proportion, and extruded into sheets through a single screw extruder, with a screw speed of 20r / min and an extrusion temperature of 120°C; S4. The extruded sheet is calendered, pulled, cooled and then enters the foaming furnace for foaming. The temperature of the foaming furnace is set to 190°C. After the material is foamed, it is cooled and rolled to obtain the antibacterial and mosquito repellent XPE foaming material.

[0025] Example 3 A method for preparing an antibacterial and mosquito-proof XPE foam material comprises the following steps: S1. Mix the foaming agent and polyethylene resin in a ratio of 1:2, the mosquito repellent and polyethylene in a ratio of 1:4, and the antibacterial agent and polyethylene resin in a ratio of 1:10, and add them to the internal mixer in batches for internal mixing. The internal mixing temperature is 116°C and the time is 18 minutes; S2, the materials obtained after the internal mixing were plasticized, extruded and granulated in a single screw granulator in batches, the body temperature of the extruder was set to 135 ° C, the screw speed was 15r / min, and the foaming agent masterbatch, mosquito repellent masterbatch and antibacterial masterbatch were obtained respectively; S3, polyethylene resin, foaming agent masterbatch, mosquito repellent masterbatch, antibacterial masterbatch, and stabilizer are mixed in proportion, and extruded into a sheet through a single screw extruder, with a screw speed of 25r / min and an extrusion temperature of 122°C; S4. The extruded sheet is calendered, pulled, cooled and then enters the foaming furnace for foaming. The temperature of the foaming furnace is set to 200°C. After the material is foamed, it is cooled and rolled to obtain the antibacterial and mosquito repellent XPE foaming material.

[0026] Example 4 A method for preparing an antibacterial and mosquito-proof XPE foam material comprises the following steps: S1. Mix the foaming agent and polyethylene resin in a ratio of 1:2, the mosquito repellent and polyethylene in a ratio of 1:4, and the antibacterial agent and polyethylene resin in a ratio of 1:10, and add them to the internal mixer in batches for internal mixing at a temperature of 120°C for 20 minutes; S2, the materials obtained after the internal mixing were plasticized, extruded and granulated in a single screw granulator in batches, the body temperature of the extruder was set to 150 ° C, the screw speed was 20r / min, and the foaming agent masterbatch, mosquito repellent masterbatch and antibacterial masterbatch were obtained respectively; S3, polyethylene resin, foaming agent masterbatch, mosquito repellent masterbatch, antibacterial masterbatch, and stabilizer are mixed in proportion, and extruded into a sheet through a single screw extruder, with a screw speed of 30r / min and an extrusion temperature of 125°C; S4. The extruded sheet is calendered, pulled, cooled and then enters the foaming furnace for foaming. The temperature of the foaming furnace is set to 220°C. After the material is foamed, it is cooled and rolled to obtain the antibacterial and mosquito repellent XPE foaming material.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An antibacterial and anti-mosquito XPE foam material, characterized in that: The material comprises the following components: polyethylene resin, antibacterial masterbatch, mosquito repellent masterbatch, foaming agent masterbatch and stabilizer, the antibacterial agent in the antibacterial masterbatch is nano silver particles, the mosquito repellent in the mosquito repellent masterbatch is lemon eucalyptus oil, the foaming agent in the foaming agent masterbatch is azodicarbonamide, and the stabilizer is calcium stearate; The antibacterial agent in the antibacterial masterbatch is added in an amount of 0.5%-2.0% of the total mass of the polyethylene resin, and the two are mixed and granulated to obtain the antibacterial masterbatch; The amount of the mosquito repellent in the mosquito repellent masterbatch is 0.1%-1.0% of the total mass of the polyethylene resin, and the two are mixed and granulated to obtain the product; The foaming agent in the foaming agent masterbatch is added in an amount of 1.0% to 3.0% of the total mass of the polyethylene resin, and the two are mixed and granulated to obtain the foaming agent. The stabilizer is added in an amount of 0.5% to 1.5% of the total mass of the polyethylene resin.

2. The antibacterial and anti-mosquito XPE foam material according to claim 1, characterized in that: The polyethylene resin is a mixture of high-density polyethylene (HDPE) and low-density polyethylene (LDPE), and the mass ratio of HDPE to LDPE in the mixture is 3:

7.

3. The antibacterial and anti-mosquito XPE foam material according to claim 1 or 2, characterized in that: The antibacterial agent is a mixture of nano silver and quaternary ammonium salt, and the mass ratio of the nano silver to the quaternary ammonium salt in the mixture is 1:1 to 2:

1.

4. The antibacterial and anti-mosquito XPE foam material according to claim 1 or 2, characterized in that: The mosquito repellent is a mixture of DEET and lemon eucalyptus oil, wherein the mass ratio of DEET to lemon eucalyptus oil in the mixture is 1:1 to 3:

1.

5. The antibacterial and anti-mosquito XPE foam material according to claim 1 or 2, characterized in that: The foaming agent is a mixture of azodicarbonamide and sodium bicarbonate, and the mass ratio of AC to sodium bicarbonate in the mixture is 1:1 to 2:

1.

6. The antibacterial and anti-mosquito XPE foam material according to claim 1 or 2, characterized in that: The stabilizer is a mixture of calcium stearate and an antioxidant, and the mass ratio of calcium stearate to antioxidant in the mixture is 1:1 to 3:

1.

7. A method for preparing an antibacterial and anti-mosquito XPE foam material, characterized in that: The following steps are involved: S1, the foaming agent and polyethylene resin are mixed in a ratio of 1:2, the mosquito repellent and polyethylene resin are mixed in a ratio of 1:4, and the antibacterial agent and polyethylene resin are mixed in a ratio of 1:10, and added to the internal mixer in batches for internal mixing at a temperature of 110-120°C for 10min-20min; S2, the materials obtained after the internal mixing are plasticized, extruded and granulated in a single screw granulator in batches, the body temperature of the extruder is set to 110 ℃ -150 ℃, the screw speed is 10-20r / min, and the foaming agent masterbatch, mosquito repellent masterbatch and antibacterial masterbatch are respectively obtained; S3, polyethylene resin, foaming agent masterbatch, mosquito repellent masterbatch, antibacterial masterbatch, and stabilizer are mixed in proportion, and extruded into sheets through a single screw extruder, with a screw speed of 20-30r / min and an extrusion temperature of 120-125°C; S4. The extruded sheet is calendered, pulled, cooled and then enters a foaming furnace for foaming. The temperature of the foaming furnace is set at 180-220°C. After foaming, the material is cooled and rolled to obtain an antibacterial and insect repellent XPE foaming material.

8. The method for preparing the antibacterial and anti-mosquito XPE foam material according to claim 7, characterized in that: The temperature of the extruder is controlled at 150-180° C., and the screw speed of the extruder is 50-100 rpm.

9. The preparation method according to claim 7, characterized in that: The cooling method of the antibacterial and anti-mosquito XPE foam material is water cooling, and the water cooling temperature is 10-20℃.

10. The method for preparing the antibacterial and anti-mosquito XPE foam material according to claim 7, characterized in that: A certain amount of lubricant is also added to the S3, the lubricant is selected from one or more of stearic acid and polyethylene glycol, and the amount of the lubricant added is 0.1% to 0.5% of the total mass of the polyethylene resin.