Preparation method of efficient shading super-soft film

Abstract

The invention relates to the technical field of shading films, and discloses an efficient shading super-soft film which is composed of graphene, polyurethane, an auxiliary agent, a coloring agent and tackifying master batch. Polyurethane and graphene are adopted as main materials, polyurethane is a flexible polymer and has good elasticity and flexibility, when polyurethane is combined with graphene, the flexibility of the film material can be further improved, and by adding graphene, the tensile strength and wear resistance of the shading film can be improved; graphene has excellent thermal conductivity and thermal stability, so that the performance of the shading film in a high-temperature environment is improved, the service life of the shading film is prolonged, the flexibility of the shading film can be further improved through a plasticizer in an auxiliary agent, and damage of light to the material can be reduced through addition of a light stabilizer and an ultraviolet light absorber; the shading film is protected from degradation caused by ultraviolet irradiation, and the service life of the product is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of light-shielding films, and in particular to a method for preparing a highly efficient light-shielding ultra-flexible film. Background Art

[0002] The shading film can be used to block light, achieving the effect of partial light transmission or complete light blocking, thereby achieving the control of light to meet specific shading needs. The base material of the shading film can be a polymer film such as a polyolefin film, a polyimide film or a polyurethane film. Among them, thermoplastic polyurethane is a polymer compound with carbamate as a repeating unit generated by the reaction of polyols and polyisocyanates. It has the characteristics of adjustable hardness, solvent resistance, and low temperature resistance, and has good adhesion to most materials. It is a polymer material with comprehensive properties, so it is widely used in tablecloths, shower curtains, curtains, furniture fabrics, coated fabrics and lining materials.

[0003] The existing shading films currently have the problem of poor flexibility, resulting in low flexibility of the shading films. At the same time, when used in some special environments, the thermal stability and strength of the shading films are also tested. Therefore, a method for preparing an efficient shading ultra-flexible film is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for preparing a highly efficient light-shielding ultra-flexible film in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a highly efficient light-shielding ultra-flexible film, which is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of the graphene is 30% to 40%, the weight percentage of the polyurethane is 30% to 40%, the weight percentage of the auxiliary agent is 5% to 10%, the weight percentage of the colorant is 3% to 8%, and the weight percentage of the viscosity-enhancing masterbatch is 8% to 12%.

[0006] A method for preparing a highly efficient light-shielding ultra-flexible film comprises the following steps: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and the tackifier masterbatch are mixed by high-speed stirring, so that the graphene, polyurethane and the tackifier masterbatch are evenly mixed; S2. Raw material melting The mixed graphene, polyurethane and viscosity-enhancing masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed liquid; S3, raw material mixing and plasticization Add the additives and colorants to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additives and mix them evenly, then add the colorants and mix them, and then plasticize them. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and then stretched and stretched after cooling to obtain a flat and thin film; S5, cooling and winding The film is cooled and then rolled up by a rolling device to obtain a finished film.

[0007] Preferably, the auxiliary agent includes a light stabilizer, an antioxidant, a slip agent, a plasticizer and a UV absorber.

[0008] Preferably, the mixing time in S1 is 15 to 20 minutes.

[0009] Preferably, the high-temperature melting temperature in S2 is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes, and then high-speed stirring for 10 to 15 minutes. The low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min.

[0010] Preferably, the mixing temperature in S3 is 120 to 180° C., and the mixing time is 20 to 40 minutes.

[0011] Preferably, the temperature of the main roller of the calender in S4 is required to be 180°C to 200°C.

[0012] Preferably, in S5, the winding tension is 0.1kg to 0.2kg, and the winding speed is 15m / min to 25m / min.

[0013] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The preparation method of the high-efficiency light-shielding ultra-flexible film adopts polyurethane and graphene as the main materials. Polyurethane itself is a flexible polymer with good elasticity and flexibility. When combined with graphene, the flexibility of the film material can be further improved. The addition of graphene can improve the tensile strength and wear resistance of the light-shielding film. Graphene has excellent thermal conductivity and thermal stability, which helps to improve the performance of the light-shielding film in high temperature environments, thereby increasing the service life of the light-shielding film.

[0014] 2. The preparation method of the high-efficiency light-shielding ultra-flexible film can improve the antistatic or electromagnetic shielding function of the light-shielding film by adding graphene, so that the light-shielding film can be applied to more scenarios. The plasticizer in the auxiliary agent can further improve the flexibility of the light-shielding film, and the addition of light stabilizers and ultraviolet absorbers can reduce the damage of light to the material, protect the light-shielding film from degradation caused by ultraviolet radiation, and extend the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the preparation process of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in 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. Embodiment 1

[0017] See also Figure 1 , one embodiment of the present invention is: a high-efficiency light-shielding ultra-flexible film, the film is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of graphene is 40%, the weight percentage of polyurethane is 40%, the weight percentage of additives is 10%, the weight percentage of colorants is 5%, and the weight percentage of viscosity-enhancing masterbatch is 5%.

[0018] Additives include light stabilizers, antioxidants, slip agents, plasticizers and UV absorbers.

[0019] A method for preparing a highly efficient light-shielding ultra-flexible film comprises the following steps: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and tackifier masterbatch are mixed by high-speed stirring to make the graphene, polyurethane and tackifier masterbatch uniformly mixed, and the mixing time is 15 to 20 minutes; S2. Raw material melting The mixed graphene, polyurethane and tackifying masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed solution, wherein the high temperature melting temperature is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes, and then high-speed stirring for 10 to 15 minutes, the low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min; S3, raw material mixing and plasticization Add the additive and colorant to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additive and mix it evenly, then add the colorant and mix it, and then plasticize it. The mixing temperature is 120-180°C and the mixing time is 20-40 minutes. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and after cooling, it is stretched and stretched to obtain a flat and thin film. The temperature of the main roller of the calender is required to be 180℃~200℃; S5, cooling and winding The film is cooled, and then rolled up by a rolling device to obtain a finished film, wherein the rolling tension is 0.1kg to 0.2kg, and the rolling speed is 15m / min to 25m / min. Embodiment 2

[0020] See also Figure 1 , one embodiment of the present invention is: a high-efficiency light-shielding ultra-flexible film, the film is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of graphene is 35%, the weight percentage of polyurethane is 40%, the weight percentage of additives is 5%, the weight percentage of colorants is 8%, and the weight percentage of viscosity-enhancing masterbatch is 12%.

[0021] Additives include light stabilizers, antioxidants, slip agents, plasticizers and UV absorbers.

[0022] A method for preparing a highly efficient light-shielding ultra-flexible film comprises the following steps: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and tackifier masterbatch are mixed by high-speed stirring to make the graphene, polyurethane and tackifier masterbatch uniformly mixed, and the mixing time is 15 to 20 minutes; S2. Raw material melting The mixed graphene, polyurethane and tackifying masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed solution, wherein the high temperature melting temperature is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes, and then high-speed stirring for 10 to 15 minutes, the low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min; S3, raw material mixing and plasticization Add the additive and colorant to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additive and mix it evenly, then add the colorant and mix it, and then plasticize it. The mixing temperature is 120-180°C and the mixing time is 20-40 minutes. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and after cooling, it is stretched and stretched to obtain a flat and thin film. The temperature of the main roller of the calender is required to be 180℃~200℃; S5, cooling and winding The film is cooled, and then rolled up by a rolling device to obtain a finished film, wherein the rolling tension is 0.1kg to 0.2kg, and the rolling speed is 15m / min to 25m / min. Embodiment 3

[0023] See also Figure 1 , one embodiment of the present invention is: a high-efficiency light-shielding ultra-flexible film, the film is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of graphene is 38%, the weight percentage of polyurethane is 35%, the weight percentage of additives is 10%, the weight percentage of colorants is 5%, and the weight percentage of viscosity-enhancing masterbatch is 12%.

[0024] Additives include light stabilizers, antioxidants, slip agents, plasticizers and UV absorbers.

[0025] A method for preparing a highly efficient light-shielding ultra-flexible film comprises the following steps: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and tackifier masterbatch are mixed by high-speed stirring to make the graphene, polyurethane and tackifier masterbatch uniformly mixed, and the mixing time is 15 to 20 minutes; S2. Raw material melting The mixed graphene, polyurethane and tackifying masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed solution, wherein the high temperature melting temperature is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes, and then high-speed stirring for 10 to 15 minutes, the low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min; S3, raw material mixing and plasticization Add the additive and colorant to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additive and mix it evenly, then add the colorant and mix it, and then plasticize it. The mixing temperature is 120-180°C and the mixing time is 20-40 minutes. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and after cooling, it is stretched and stretched to obtain a flat and thin film. The temperature of the main roller of the calender is required to be 180℃~200℃; S5, cooling and winding The film is cooled, and then rolled up by a rolling device to obtain a finished film, wherein the rolling tension is 0.1kg to 0.2kg, and the rolling speed is 15m / min to 25m / min. Embodiment 4

[0026] See also Figure 1 , one embodiment of the present invention is: a high-efficiency light-shielding ultra-flexible film, the film is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of graphene is 40%, the weight percentage of polyurethane is 40%, the weight percentage of additives is 8%, the weight percentage of colorants is 4%, and the weight percentage of viscosity-enhancing masterbatch is 8%.

[0027] Additives include light stabilizers, antioxidants, slip agents, plasticizers and UV absorbers.

[0028] A method for preparing a highly efficient light-shielding ultra-flexible film comprises the following steps: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and tackifier masterbatch are mixed by high-speed stirring to make the graphene, polyurethane and tackifier masterbatch uniformly mixed, and the mixing time is 15 to 20 minutes; S2. Raw material melting The mixed graphene, polyurethane and tackifying masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed solution, wherein the high temperature melting temperature is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes, and then high-speed stirring for 10 to 15 minutes, the low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min; S3, raw material mixing and plasticization Add the additive and colorant to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additive and mix it evenly, then add the colorant and mix it, and then plasticize it. The mixing temperature is 120-180°C and the mixing time is 20-40 minutes. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and after cooling, it is stretched and stretched to obtain a flat and thin film. The temperature of the main roller of the calender is required to be 180℃~200℃; S5, cooling and winding The film is cooled, and then rolled up by a rolling device to obtain a finished film, wherein the rolling tension is 0.1kg to 0.2kg, and the rolling speed is 15m / min to 25m / min. Embodiment 5

[0029] See also Figure 1 , one embodiment of the present invention is: a high-efficiency light-shielding ultra-flexible film, the film is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of graphene is 40%, the weight percentage of polyurethane is 35%, the weight percentage of additives is 10%, the weight percentage of colorants is 8%, and the weight percentage of viscosity-enhancing masterbatch is 7%.

[0030] Additives include light stabilizers, antioxidants, slip agents, plasticizers and UV absorbers.

[0031] A method for preparing a highly efficient light-shielding ultra-flexible film comprises the following steps: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and tackifier masterbatch are mixed by high-speed stirring to make the graphene, polyurethane and tackifier masterbatch uniformly mixed, and the mixing time is 15 to 20 minutes; S2. Raw material melting The mixed graphene, polyurethane and tackifying masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed solution, wherein the high temperature melting temperature is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes, and then high-speed stirring for 10 to 15 minutes, the low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min; S3, raw material mixing and plasticization Add the additive and colorant to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additive and mix it evenly, then add the colorant and mix it, and then plasticize it. The mixing temperature is 120-180°C and the mixing time is 20-40 minutes. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and after cooling, it is stretched and stretched to obtain a flat and thin film. The temperature of the main roller of the calender is required to be 180℃~200℃; S5, cooling and winding The film is cooled, and then rolled up by a rolling device to obtain a finished film, wherein the rolling tension is 0.1kg to 0.2kg, and the rolling speed is 15m / min to 25m / min.

[0032] By using polyurethane and graphene as the main materials, polyurethane itself is a flexible polymer with good elasticity and flexibility. When combined with graphene, the flexibility of the film material can be further improved. The addition of graphene can improve the tensile strength and wear resistance of the light-shielding film. Graphene has excellent thermal conductivity and thermal stability, which helps to improve the performance of the light-shielding film in high temperature environments, thereby increasing the service life of the light-shielding film. The addition of graphene can improve the anti-static or electromagnetic shielding function of the light-shielding film, making the light-shielding film suitable for more scenarios. The plasticizer in the additive can further improve the flexibility of the light-shielding film. The addition of light stabilizers and ultraviolet absorbers can reduce the damage of light to the material, protect the light-shielding film from degradation caused by ultraviolet radiation, and extend the service life of the product.

[0033] The present invention provides a method for preparing an efficient light-shielding ultra-flexible film. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A highly efficient light-shielding ultra-flexible film, characterized in that The film is composed of graphene, polyurethane, additives, colorants and viscosity-enhancing masterbatch; The weight percentage of the graphene is 30% to 40%, the weight percentage of the polyurethane is 30% to 40%, the weight percentage of the auxiliary agent is 5% to 10%, the weight percentage of the colorant is 3% to 8%, and the weight percentage of the viscosity-enhancing masterbatch is 8% to 12%.

2. A method for preparing a high-efficiency light-shielding ultra-flexible film according to claim 1, characterized in that: The following steps are involved: S1. High-speed blending of raw materials According to the ratio, the graphene, polyurethane and the tackifier masterbatch are mixed by high-speed stirring, so that the graphene, polyurethane and the tackifier masterbatch are evenly mixed; S2. Raw material melting The mixed graphene, polyurethane and viscosity-enhancing masterbatch are melted at high temperature, and stirred during the melting process to obtain a molten mixed liquid; S3, raw material mixing and plasticization Add the additives and colorants to the mixed solution according to the ratio, and heat and stir it. The adding process is to first add the additives and mix them evenly, then add the colorants and mix them, and then plasticize them. S4, extrusion molding The plasticized raw material is heated by an extruder and extruded at a uniform speed, and then sent to a calender to be calendered into a film, and then the film is sent to a flat stretching machine, and then stretched and stretched after cooling to obtain a flat and thin film; S5, cooling and winding The film is cooled and then rolled up by a rolling device to obtain a finished film.

3. The method for preparing the high-efficiency light-shielding ultra-flexible film according to claim 2, characterized in that: The auxiliary agents include light stabilizers, antioxidants, slip agents, plasticizers and ultraviolet absorbers.

4. The method for preparing the high-efficiency light-shielding ultra-flexible film according to claim 2, characterized in that: The mixing time in S1 is 15 to 20 minutes.

5. The method for preparing the high-efficiency light-shielding ultra-flexible film according to claim 2, characterized in that: The high temperature melting temperature in S2 is 180°C to 250°C, and the stirring process is low-speed stirring for 5 to 10 minutes and then high-speed stirring for 10 to 15 minutes. The low-speed stirring requirement is 600r / min to 800r / min, and the high-speed stirring requirement is 1400r / min to 1600r / min.

6. The method for preparing the high-efficiency light-shielding ultra-flexible film according to claim 2, characterized in that: The mixing temperature in S3 is 120 to 180° C., and the mixing time is 20 to 40 minutes.

7. The method for preparing the high-efficiency light-shielding ultra-flexible film according to claim 2, characterized in that: The temperature of the main roller of the calender in S4 is required to be 180°C to 200°C.

8. The method for preparing the high-efficiency light-shielding ultra-flexible film according to claim 2, characterized in that: In the S5, the winding tension is 0.1kg-0.2kg, and the winding speed is 15m / min-25m / min.

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