CN117924855A - Breathable black mask for automobile and preparation method thereof - Google Patents

Breathable black mask for automobile and preparation method thereof Download PDF

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CN117924855A
CN117924855A CN202410338073.5A CN202410338073A CN117924855A CN 117924855 A CN117924855 A CN 117924855A CN 202410338073 A CN202410338073 A CN 202410338073A CN 117924855 A CN117924855 A CN 117924855A
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breathable
zinc oxide
diatomite
black mask
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CN117924855B (en
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陈栋
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Guangzhou Lingyinhang Composite Material Co ltd
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Guangzhou Lingyinhang Composite Material Co ltd
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    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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    • C08J2475/04—Polyurethanes
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K2201/011—Nanostructured additives
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K5/00—Use of organic ingredients
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    • C08K5/10—Esters; Ether-esters
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    • C08K7/00—Use of ingredients characterised by shape
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract

The invention relates to the technical field of automobile films, and in particular discloses a breathable black mask for an automobile and a preparation method thereof, wherein the breathable black mask comprises the following raw materials in parts by weight: 25-30 parts of PVC master batch, 15-20 parts of TPU master batch, 2-5 parts of plasticizer, 1-3 parts of calcium stearate, 2-5 parts of carbon black, 5-10 parts of modified nano zinc oxide, 4-7 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560. According to the breathable black shielding film, PVC master batches, TPU master batches, plasticizers, calcium stearate, carbon black and a silane coupling agent KH560 are adopted, modified nano zinc oxide and diatomite agents are added, and the PVC master batches, the TPU master batches, the calcium stearate, the carbon black and the silane coupling agent KH560 are matched and synergistic together, so that the breathability, the glossiness and the scratch resistance of the obtained product can be improved in a coordinated manner.

Description

Breathable black mask for automobile and preparation method thereof
Technical Field
The invention relates to the technical field of automobile films, in particular to a breathable black shielding film for an automobile and a preparation method thereof.
Background
The black film is also called as black shielding film, belongs to one kind of functional automobile film, is used in the inner and outer frames, driving window, automobile body, etc. of automobile to replace paint for decoration, and may be used in expanding the vision of automobile window and driving window. In order to improve the air permeability of the product, the traditional black mask is easy to cause the reduction of the glossiness and scratch resistance of the product, and the performance coordination improvement of the product is difficult to realize, so that the use efficiency of the product is limited.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide a breathable black mask for an automobile and a method for preparing the same, so as to solve the problems set forth in the background art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a breathable black mask for an automobile, which comprises the following raw materials in parts by weight:
25-30 parts of PVC master batch, 15-20 parts of TPU master batch, 2-5 parts of plasticizer, 1-3 parts of calcium stearate, 2-5 parts of carbon black, 5-10 parts of modified nano zinc oxide, 4-7 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560.
Preferably, the breathable black mask for automobiles comprises the following raw materials in parts by weight:
27.5 parts of PVC master batch, 17.5 parts of TPU master batch, 3.5 parts of plasticizer, 2 parts of calcium stearate, 3.5 parts of carbon black, 7.5 parts of modified nano zinc oxide, 5.5 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560.
Preferably, the plasticizer is di (2-ethylhexyl) phthalate;
Preferably, the modification method of the modified nano zinc oxide comprises the following steps:
S101: the nano zinc oxide is irradiated for 10 to 15 minutes in a proton irradiation box, and then is stirred and mixed uniformly in a sufficient amount of 10 percent potassium permanganate solution, and finally, the zinc oxide agent is obtained after water washing and drying;
S102: adding 3-5 parts of chitosan solution and 1-3 parts of sodium dodecyl benzene sulfonate into 7-10 parts of lanthanum nitrate solution, then adding 1-3 parts of yttrium oxide, and stirring and mixing uniformly to obtain a modified liquid;
S103: and (3) stirring and modifying the zinc oxide agent and the modifying liquid according to the weight ratio of 2:5, and washing and drying after stirring is finished to obtain the modified nano zinc oxide.
Preferably, the irradiation power is 350-400W.
Preferably, the mass fraction of the chitosan solution is 4-7%; the mass fraction of the lanthanum nitrate solution is 2-5%.
Preferably, the stirring temperature of the stirring modification treatment is 48-52 ℃, the stirring rotation speed is 450-500r/min, and the stirring time is 35-40min.
Preferably, the preparation method of the diatomite agent comprises the following steps:
S11: fully mixing diatomite in a sufficient amount of hydrochloric acid solution with the mass fraction of 2%, and finally washing and drying;
S12: then heating to 150-160 ℃ at a speed of 1-3 ℃/min, preserving heat for 2-5min, then heating to 320-330 ℃ at a speed of 2-5 ℃/min, preserving heat for 5-10min, and finally air-cooling to room temperature for standby;
S13: and adding the standby diatomite into a sufficient amount of sodium citrate solution with the mass fraction of 10% for ultrasonic dispersion treatment, and washing and drying after ultrasonic treatment to obtain the diatomite agent.
Preferably, the ultrasonic power of the ultrasonic dispersion treatment is 300-350W, and the ultrasonic time is 20-30min.
The invention also provides a preparation method of the breathable black mask for the automobile, which comprises the following steps:
Weighing raw materials according to parts by weight, sequentially and fully mixing the weighed raw materials, then adding the mixture into a double-screw extruder for extrusion, wherein the extrusion temperature is 155-165 ℃, and thus the breathable black mask is obtained.
Compared with the prior art, the invention has the following beneficial effects:
According to the breathable black shielding film disclosed by the invention, PVC master batches, TPU master batches are matched with plasticizers, calcium stearate, carbon black and silane coupling agents KH560, modified nano zinc oxide and diatomite agents are added to realize coordinated improvement on breathability, glossiness and scratch resistance of the obtained product, the nano zinc oxide is treated by proton irradiation and potassium permanganate solution, the activity efficiency of the nano zinc oxide is optimized, chitosan solution, sodium dodecyl benzene sulfonate, lanthanum nitrate solution and yttrium oxide are mutually blended, the modified liquid obtained by the coordinated improvement on the nano zinc oxide, so that the overall performance stability of the system is enhanced in a distribution system, the surface glossiness of the system is optimized, the diatomite agents are heated to 150-160 ℃ by adopting hydrochloric acid solution and a combined 1-3 ℃/min rate, the temperature is kept for 2-5min, then the temperature is raised to 320-330 ℃ by adopting the combined 1-3 ℃/min rate, the temperature is kept for 5-10min, and finally the air cooling is carried out to room temperature by adopting a series of process treatment, so that the synergistic effect of the diatomite agents and the modified zinc oxide is optimized, and the coordinated effect of the product on the glossiness and the scratch resistance is further enhanced.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The breathable black mask for the automobile comprises the following raw materials in parts by weight:
25-30 parts of PVC master batch, 15-20 parts of TPU master batch, 2-5 parts of plasticizer, 1-3 parts of calcium stearate, 2-5 parts of carbon black, 5-10 parts of modified nano zinc oxide, 4-7 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560.
The breathable black mask for automobiles of the embodiment comprises the following raw materials in parts by weight:
27.5 parts of PVC master batch, 17.5 parts of TPU master batch, 3.5 parts of plasticizer, 2 parts of calcium stearate, 3.5 parts of carbon black, 7.5 parts of modified nano zinc oxide, 5.5 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560.
The plasticizer of this example is di (2-ethylhexyl) phthalate;
The modification method of the modified nano zinc oxide in the embodiment comprises the following steps:
S101: the nano zinc oxide is irradiated for 10 to 15 minutes in a proton irradiation box, and then is stirred and mixed uniformly in a sufficient amount of 10 percent potassium permanganate solution, and finally, the zinc oxide agent is obtained after water washing and drying;
S102: adding 3-5 parts of chitosan solution and 1-3 parts of sodium dodecyl benzene sulfonate into 7-10 parts of lanthanum nitrate solution, then adding 1-3 parts of yttrium oxide, and stirring and mixing uniformly to obtain a modified liquid;
S103: and (3) stirring and modifying the zinc oxide agent and the modifying liquid according to the weight ratio of 2:5, and washing and drying after stirring is finished to obtain the modified nano zinc oxide.
The irradiation power of this example was 350-400W.
The mass fraction of the chitosan solution in the embodiment is 4-7%; the mass fraction of the lanthanum nitrate solution is 2-5%.
Preferably, the stirring temperature of the stirring modification treatment is 48-52 ℃, the stirring rotation speed is 450-500r/min, and the stirring time is 35-40min.
The preparation method of the diatomite agent in the embodiment comprises the following steps:
S11: fully mixing diatomite in a sufficient amount of hydrochloric acid solution with the mass fraction of 2%, and finally washing and drying;
S12: then heating to 150-160 ℃ at a speed of 1-3 ℃/min, preserving heat for 2-5min, then heating to 320-330 ℃ at a speed of 2-5 ℃/min, preserving heat for 5-10min, and finally air-cooling to room temperature for standby;
S13: and adding the standby diatomite into a sufficient amount of sodium citrate solution with the mass fraction of 10% for ultrasonic dispersion treatment, and washing and drying after ultrasonic treatment to obtain the diatomite agent.
The ultrasonic power of the ultrasonic dispersion treatment of the embodiment is 300-350W, and the ultrasonic time is 20-30min.
The preparation method of the breathable black mask for the automobile comprises the following steps:
Weighing raw materials according to parts by weight, sequentially and fully mixing the weighed raw materials, then adding the mixture into a double-screw extruder for extrusion, wherein the extrusion temperature is 155-165 ℃, and thus the breathable black mask is obtained.
Example 1
The breathable black mask for the automobile comprises the following raw materials in parts by weight:
25 parts of PVC master batch, 15 parts of TPU master batch, 2 parts of plasticizer, 1 part of calcium stearate, 2 parts of carbon black, 5 parts of modified nano zinc oxide, 4 parts of diatomite agent and 1 part of silane coupling agent KH 560.
The plasticizer of this example is di (2-ethylhexyl) phthalate;
The modification method of the modified nano zinc oxide in the embodiment comprises the following steps:
S101: the nano zinc oxide is firstly irradiated for 10min in a proton irradiation box, then is stirred and mixed uniformly in a sufficient amount of potassium permanganate solution with the mass fraction of 10%, and finally is washed with water and dried to obtain a zinc oxide agent;
S102: adding 3 parts of chitosan solution and 1 part of sodium dodecyl benzene sulfonate into 7 parts of lanthanum nitrate solution, then adding 1 part of yttrium oxide, and stirring and mixing uniformly to obtain a modified liquid;
S103: and (3) stirring and modifying the zinc oxide agent and the modifying liquid according to the weight ratio of 2:5, and washing and drying after stirring is finished to obtain the modified nano zinc oxide.
The irradiation power of this example was 350W.
The mass fraction of the chitosan solution of this example was 4%; the mass fraction of the lanthanum nitrate solution is 2%.
The stirring temperature for the stirring modification treatment in this example was 48℃and the stirring speed was 450r/min, and the stirring time was 35min.
The preparation method of the diatomite agent in the embodiment comprises the following steps:
S11: fully mixing diatomite in a sufficient amount of hydrochloric acid solution with the mass fraction of 2%, and finally washing and drying;
S12: then heating to 150 ℃ at a speed of 1 ℃/min, preserving heat for 2min, heating to 320 ℃ at a speed of 2 ℃/min, preserving heat for 5min, and finally air-cooling to room temperature for later use;
S13: and adding the standby diatomite into a sufficient amount of sodium citrate solution with the mass fraction of 10% for ultrasonic dispersion treatment, and washing and drying after ultrasonic treatment to obtain the diatomite agent.
The ultrasonic power of the ultrasonic dispersion treatment in this embodiment was 300W, and the ultrasonic time was 20min.
The preparation method of the breathable black mask for the automobile comprises the following steps:
Weighing raw materials according to parts by weight, sequentially and fully mixing the weighed raw materials, then adding the mixture into a double-screw extruder for extrusion, wherein the extrusion temperature is 155 ℃, and obtaining the breathable black mask.
Example 2
The breathable black mask for the automobile comprises the following raw materials in parts by weight:
30 parts of PVC master batch, 20 parts of TPU master batch, 5 parts of plasticizer, 3 parts of calcium stearate, 5 parts of carbon black, 10 parts of modified nano zinc oxide, 7 parts of diatomite agent and 2 parts of silane coupling agent KH 560.
The plasticizer of this example is di (2-ethylhexyl) phthalate;
The modification method of the modified nano zinc oxide in the embodiment comprises the following steps:
S101: the nano zinc oxide is irradiated for 15min in a proton irradiation box, and then is stirred and mixed uniformly in a sufficient amount of potassium permanganate solution with the mass fraction of 10%, and finally is washed with water and dried to obtain a zinc oxide agent;
S102: adding 5 parts of chitosan solution and 3 parts of sodium dodecyl benzene sulfonate into 10 parts of lanthanum nitrate solution, then adding 3 parts of yttrium oxide, and stirring and mixing uniformly to obtain a modified liquid;
S103: and (3) stirring and modifying the zinc oxide agent and the modifying liquid according to the weight ratio of 2:5, and washing and drying after stirring is finished to obtain the modified nano zinc oxide.
The irradiation power of this example was 400W.
The mass fraction of the chitosan solution of this example was 7%; the mass fraction of the lanthanum nitrate solution is 5%.
The stirring temperature for the stirring modification treatment in this example was 52℃and the stirring speed was 500r/min, and the stirring time was 40min.
The preparation method of the diatomite agent in the embodiment comprises the following steps:
S11: fully mixing diatomite in a sufficient amount of hydrochloric acid solution with the mass fraction of 2%, and finally washing and drying;
S12: then heating to 160 ℃ at the speed of 3 ℃/min, preserving heat for 5min, heating to 330 ℃ at the speed of 5 ℃/min, preserving heat for 10min, and finally air-cooling to room temperature for later use;
S13: and adding the standby diatomite into a sufficient amount of sodium citrate solution with the mass fraction of 10% for ultrasonic dispersion treatment, and washing and drying after ultrasonic treatment to obtain the diatomite agent.
The ultrasonic power of the ultrasonic dispersion treatment in this embodiment was 350W and the ultrasonic time was 30min.
The preparation method of the breathable black mask for the automobile comprises the following steps:
Weighing raw materials according to parts by weight, sequentially and fully mixing the weighed raw materials, then adding the mixture into a double-screw extruder for extrusion, wherein the extrusion temperature is 165 ℃, and obtaining the breathable black mask.
Example 3
The breathable black mask for the automobile comprises the following raw materials in parts by weight:
27.5 parts of PVC master batch, 17.5 parts of TPU master batch, 3.5 parts of plasticizer, 2 parts of calcium stearate, 3.5 parts of carbon black, 7.5 parts of modified nano zinc oxide, 5.5 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560.
The plasticizer of this example is di (2-ethylhexyl) phthalate;
The modification method of the modified nano zinc oxide in the embodiment comprises the following steps:
S101: the nano zinc oxide is irradiated for 12 minutes in a proton irradiation box, then is stirred and mixed uniformly in a sufficient amount of 10% potassium permanganate solution, and finally is washed and dried to obtain a zinc oxide agent;
s102: adding 4 parts of chitosan solution and 2 parts of sodium dodecyl benzene sulfonate into 8.5 parts of lanthanum nitrate solution, then adding 2 parts of yttrium oxide, and stirring and mixing uniformly to obtain a modified liquid;
S103: and (3) stirring and modifying the zinc oxide agent and the modifying liquid according to the weight ratio of 2:5, and washing and drying after stirring is finished to obtain the modified nano zinc oxide.
The irradiation power of this example was 370W.
The mass fraction of the chitosan solution of the embodiment is 5.5%; the mass fraction of the lanthanum nitrate solution is 3.5%.
The stirring temperature for the stirring modification treatment in this example was 50℃and the stirring speed was 4700r/min, and the stirring time was 37min.
The preparation method of the diatomite agent in the embodiment comprises the following steps:
S11: fully mixing diatomite in a sufficient amount of hydrochloric acid solution with the mass fraction of 2%, and finally washing and drying;
S12: then heating to 155 ℃ at the speed of 2 ℃/min, preserving heat for 3.5min, then heating to 325 ℃ at the speed of 3.5 ℃/min, preserving heat for 7.5min, and finally air-cooling to room temperature for later use;
S13: and adding the standby diatomite into a sufficient amount of sodium citrate solution with the mass fraction of 10% for ultrasonic dispersion treatment, and washing and drying after ultrasonic treatment to obtain the diatomite agent.
The ultrasonic power of the ultrasonic dispersion treatment in this example was 325W and the ultrasonic time was 25min.
The preparation method of the breathable black mask for the automobile comprises the following steps:
Weighing raw materials according to parts by weight, sequentially and fully mixing the weighed raw materials, then adding the mixture into a double-screw extruder for extrusion, wherein the extrusion temperature is 160 ℃, and obtaining the breathable black mask.
Comparative example 1.
The difference from example 3 is that no modified nano zinc oxide was added.
Comparative example 2.
The difference from example 3 is that the modified nano zinc oxide is replaced with nano zinc oxide.
Comparative example 3.
The difference from example 3 is that no modification liquid treatment is used in the preparation of the modified nano zinc oxide.
Comparative example 4.
The difference from example 3 is that yttrium oxide and chitosan solution are not added in the preparation of the modified liquid.
Comparative example 5.
The difference from example 3 is that no diatomite agent was added.
Comparative example 6.
The difference from example 3 is that the diatomaceous earth preparation was not treated with the step S12.
The products of examples 1-3 and comparative examples 1-6 were tested for performance, gloss according to GB/T8807 standard, moisture permeability was measured using a moisture permeameter, and the products were scratched 50 times, scratch stability was measured, and the test results are shown in Table 1;
Table 1, gloss, moisture permeability test table:
As can be seen from comparative examples 1 to 6 and examples 1 to 3; the glossiness and moisture permeability of the product can be improved in a coordinated manner, and the scratch resistance and stability effects of the product are obvious;
According to the invention, one of modified nano zinc oxide and diatomite agent is not added, the product has a trend of deterioration in glossiness and moisture permeability, meanwhile, the scratch resistance and stability effects of the product are a trend of deterioration, the modified nano zinc oxide is replaced by nano zinc oxide, modified liquid treatment is not adopted in the preparation of the modified nano zinc oxide, yttrium oxide, chitosan solution and diatomite agent are not added in the preparation of the modified liquid, S12 step treatment is not adopted in the preparation of the diatomite agent, the product has a trend of deterioration in performance, and the modified nano zinc oxide and diatomite agent prepared by the method have the most remarkable performance effects.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (9)

1. The breathable black shielding film for the automobile is characterized by comprising the following raw materials in parts by weight:
25-30 parts of PVC master batch, 15-20 parts of TPU master batch, 2-5 parts of plasticizer, 1-3 parts of calcium stearate, 2-5 parts of carbon black, 5-10 parts of modified nano zinc oxide, 4-7 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560; the modification method of the modified nano zinc oxide comprises the following steps:
S101: the nano zinc oxide is irradiated for 10 to 15 minutes in a proton irradiation box, and then is stirred and mixed uniformly in a sufficient amount of 10 percent potassium permanganate solution, and finally, the zinc oxide agent is obtained after water washing and drying;
S102: adding 3-5 parts of chitosan solution and 1-3 parts of sodium dodecyl benzene sulfonate into 7-10 parts of lanthanum nitrate solution, then adding 1-3 parts of yttrium oxide, and stirring and mixing uniformly to obtain a modified liquid;
S103: and (3) stirring and modifying the zinc oxide agent and the modifying liquid according to the weight ratio of 2:5, and washing and drying after stirring is finished to obtain the modified nano zinc oxide.
2. The breathable black mask for automobiles according to claim 1, wherein the breathable black mask for automobiles comprises the following raw materials in parts by weight:
27.5 parts of PVC master batch, 17.5 parts of TPU master batch, 3.5 parts of plasticizer, 2 parts of calcium stearate, 3.5 parts of carbon black, 7.5 parts of modified nano zinc oxide, 5.5 parts of diatomite agent and 1-2 parts of silane coupling agent KH 560.
3. A breathable black mask for automobiles according to claim 1, wherein the plasticizer is di (2-ethylhexyl) phthalate.
4. A breathable black mask for automobiles according to claim 1, wherein the irradiation power is 350 to 400W.
5. A breathable blackout film for automobiles according to claim 1, wherein the mass fraction of the chitosan solution is 4-7%; the mass fraction of the lanthanum nitrate solution is 2-5%.
6. The breathable black mask for automobiles according to claim 1, wherein the stirring temperature of the stirring modification treatment is 48-52 ℃, the stirring speed is 450-500r/min, and the stirring time is 35-40min.
7. The breathable black mask for automobiles according to claim 1, wherein the diatomaceous earth preparation method comprises:
S11: fully mixing diatomite in a sufficient amount of hydrochloric acid solution with the mass fraction of 2%, and finally washing and drying;
S12: then heating to 150-160 ℃ at a speed of 1-3 ℃/min, preserving heat for 2-5min, then heating to 320-330 ℃ at a speed of 2-5 ℃/min, preserving heat for 5-10min, and finally air-cooling to room temperature for standby;
S13: and adding the standby diatomite into a sufficient amount of sodium citrate solution with the mass fraction of 10% for ultrasonic dispersion treatment, and washing and drying after ultrasonic treatment to obtain the diatomite agent.
8. The breathable black mask for automobiles according to claim 7, wherein the ultrasonic power of the ultrasonic dispersion treatment is 300-350W and the ultrasonic time is 20-30min.
9. A method for producing a breathable black mask for automobiles according to any one of claims 1 to 8, comprising the steps of:
Weighing raw materials according to parts by weight, sequentially and fully mixing the weighed raw materials, then adding the mixture into a double-screw extruder for extrusion, wherein the extrusion temperature is 155-165 ℃, and thus the breathable black mask is obtained.
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