Outdoor high-temperature printing wood grain simulation outdoor membrane material and preparation method thereof

Abstract

The invention relates to the technical field of wood grain membrane material production, in particular to an outdoor high-temperature printing wood grain simulation outdoor membrane material and a preparation method thereof. The outdoor high-temperature printing wood grain simulation outdoor membrane material is prepared from the following raw materials in parts by weight: 100-120 parts of polyvinyl chloride, 3-6 parts of compound nano powder, 3-5 parts of a functional additive, 2-4 parts of a plasticizer, 2-4 parts of a stabilizer and 2-5 parts of titanium dioxide, the outdoor high-temperature printing wood grain simulation outdoor membrane material prepared by the preparation method disclosed by the invention not only has better mechanical properties, but also has excellent flame retardance and weather resistance, and the quality of the outdoor high-temperature printing wood grain simulation outdoor membrane material is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of wood grain film material production, in particular to an outdoor high-temperature printed wood grain simulation outdoor film material and a preparation method thereof. Background Art

[0002] PVC wood grain film is a typical calendered film that can be compounded with wood, plastic, aluminum plate, steel plate and other materials to make multifunctional decorative materials. It is widely used in home appliances, interior decoration, airplanes, ships, trains and billboards.

[0003] In the patent document with application number "CN202210561872.X" and titled "A solid waste-based PVC wear-resistant wood-grain film and its preparation method", it is recorded that "the wood-grain film includes polyvinyl chloride, plasticizer, stabilizer, titanium dioxide, steel slag ultrafine powder, desulfurization ash ultrafine powder, and silica ash ultrafine powder. The present invention utilizes an ultra-fine tire vertical mill and its heating device to form 2000 mesh steel slag ultrafine powder, 2500 mesh desulfurization ash ultrafine powder and 3000 mesh silica ash ultrafine powder, and then prepares the above-mentioned wood-grain film with polyvinyl chloride, plasticizer, stabilizer, and titanium dioxide. The present invention solves the industry bottlenecks of high price and large primary resource consumption in the production of PVC wood-grain film using titanium dioxide, activated nano-calcium carbonate, and wollastonite; the hardness and wear resistance of PVC wood-grain film need to be improved; the energy consumption of ball milling is high and the processed ultrafine powder forms a spherical morphology, which does not have the disadvantage of fiber characteristics. The present invention makes full use of solid waste and meets the current industrial development requirements of energy conservation, environmental protection, and circular economy."

[0004] Although the wood grain film produced by the above patent document has the advantages of wear resistance, its flame retardancy and aging resistance are relatively insufficient and still need further improvement. Based on this, the present invention provides an outdoor high temperature printed wood grain simulation outdoor film material and its preparation method to solve the above technical problems! Summary of the invention

[0005] The purpose of the present invention is to provide an outdoor high-temperature printed wood grain simulated outdoor film material and a preparation method thereof. The prepared outdoor high-temperature printed wood grain simulated outdoor film material not only has good mechanical properties, but also has excellent flame retardant and weather resistance, effectively ensuring its quality.

[0006] To achieve the above object, the present invention provides the following technical solutions: The first aspect of the present invention: also provides an outdoor high-temperature printed wood grain simulated outdoor film material, which is composed of the following raw materials in parts by weight: 100 to 120 parts of polyvinyl chloride, 3 to 6 parts of compound nanopowders, 3 to 5 parts of functional additives, 2 to 4 parts of plasticizers, 2 to 4 parts of stabilizers and 2 to 5 parts of titanium dioxide.

[0007] Furthermore, the composite nano powder is formed by mixing modified halloysite nanotubes and nano calcium silicate in a mass ratio of 1:0.5 to 0.8.

[0008] Furthermore, the preparation process of the modified halloysite nanotubes is as follows: Ultrasonic dispersion of halloysite nanotubes in deionized water at a dosage of 0.005 to 0.01 g / mL, adding nano-cerium oxide thereto, and continuing ultrasonic dispersion for 20 to 30 minutes to obtain a first solution; Polyvinyl pyrrolidone is placed in ethylene glycol at a dosage ratio of 0.008 to 0.012 g / mL, and stirred for 12 to 14 minutes at a condition of 120 to 140 minutes to obtain a second solution; The first solution and the second solution are mixed at a mass ratio of 1:0.2-0.8 at 80-100 r / min for 10-16 min, and then heat-treated at 120-130° C. for 6-7 h. After centrifugation, the mixture is washed with deionized water for 2-4 times, and then dried in a vacuum drying oven at 80° C. to constant weight, and crushed to obtain modified halloysite nanotubes.

[0009] Furthermore, the added amount of the nano-cerium oxide is 0.14% to 0.24% of the mass of the halloysite nanotubes.

[0010] Furthermore, the preparation process of the functional additive is as follows: An appropriate amount of silicon nitride chopped fibers is placed in an appropriate amount of deionized water at a dosage ratio of 0.002 to 0.012 g / mL for ultrasonic dispersion for 20 to 30 minutes, and then boron nitride is added thereto, and the mixture is treated at 450 to 550 r / min and 60 to 70° C. for 30 to 40 minutes. After suction filtration, the obtained filter cake is placed at 1250 to 1300° C. for 70 to 80 minutes, and then ground after cooling to obtain a fiber base material; A suitable amount of fiber base material is placed in a suitable amount of the first modifier at a dosage ratio of 0.025 to 0.055 g / mL, and ultrasonically dispersed for 20 to 30 minutes, and then stirred at 82 to 88° C. and 240 to 340 r / min for 300 to 320 minutes. After suction filtration, the obtained filter cake is washed with deionized water for 2 to 4 times, and then placed in a vacuum drying oven at 80° C. to dry to constant weight, and crushed to obtain modified fiber; An appropriate amount of montmorillonite is placed in an appropriate amount of the second modifier at a dosage ratio of 0.025 to 0.055 g / mL, and ultrasonically dispersed for 40 to 50 minutes, and then stirred at 80 to 90° C. and 320 to 330 r / min for 360 to 400 minutes. After suction filtration, the obtained filter cake is washed with deionized water for 2 to 4 times, and then placed in a vacuum drying oven at 80° C. to dry to constant weight, and crushed to obtain modified montmorillonite; The modified fiber and the modified montmorillonite are fully mixed at a mass ratio of 1:0.8-1.2 to obtain a mixed base material, and then an appropriate amount of the mixed base material is placed in an appropriate amount of N,N-dimethylformamide at a dosage ratio of 0.12-0.22 g / mL and ultrasonically dispersed for 40-50 minutes.

[0011] Furthermore, the added amount of the boron nitride is 0.22% to 0.32% of the mass of the silicon nitride chopped fibers.

[0012] Furthermore, the first modifier is prepared by mixing anhydrous ethanol, γ-glycidyloxypropyltrimethoxysilane and deionized water in a mass ratio of 1:0.04-0.08:0.16-0.32.

[0013] Furthermore, the second modifier is prepared by mixing anhydrous ethanol, 3-aminopropyltriethoxysilane and deionized water in a mass ratio of 1:0.03-0.09:0.15-0.35.

[0014] Furthermore, the plasticizer is selected from any one of dioctyl phthalate and dioctyl sebacate, and the stabilizer is selected from any one of epoxidized soybean oil and hydrotalcite.

[0015] The second aspect of the present invention: also provides a method for preparing the above-mentioned outdoor high-temperature printed wood grain simulated outdoor film material, comprising the following steps: Step 1: accurately weigh polyvinyl chloride, compound nano powder, functional additive, plasticizer, stabilizer and titanium dioxide, and put the raw materials into a mixing device for high-speed mixing, and then mix them in a double-roll open mill with a front and rear roller temperature of 160-170°C and a roller distance of 1mm for 15-20 minutes; Step 2: After the mixing is completed, hot pressing is performed on a flat press at 190-200° C. for 15-20 minutes, and after cooling, a base film is obtained; Step 3: Print wood grain on the surface of the base film according to the pattern requirements to obtain a finished outdoor high-temperature printed wood grain simulated outdoor film material.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, polyvinyl chloride, compounded nano powder, functional additives, plasticizers, stabilizers and titanium dioxide are used as raw materials. The raw materials are put into a mixing device for high-speed mixing, and then mixed using a double-roll open mill. After mixing, a flat press is used for hot pressing. After cooling, a base film is obtained. Finally, wood grain is printed on the surface of the base film according to the pattern requirements to obtain an outdoor high-temperature printed wood grain simulated outdoor film material. The outdoor high-temperature printed wood grain simulated outdoor film material prepared by the present invention not only has good mechanical properties, but also has excellent flame retardant properties and weather resistance, which effectively guarantees its quality. The outdoor high-temperature printed wood grain simulated outdoor film material and the preparation method thereof provided by the present invention have a broader market prospect and are more suitable for promotion. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1: This example also provides an outdoor high-temperature printed wood grain simulated outdoor film material, which is composed of the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 3 parts of compound nanopowder, 3 parts of functional additives, 2 parts of plasticizers, 2 parts of stabilizers and 2 parts of titanium dioxide.

[0019] The composite nano powder is prepared by mixing modified halloysite nanotubes and nano calcium silicate in a mass ratio of 1:0.5.

[0020] In this embodiment, it should be noted that the polyvinyl chloride was purchased from Dongguan Xuanyuan Plastic Co., Ltd.

[0021] Furthermore, the preparation process of the modified halloysite nanotubes is as follows: Halloysite nanotubes were ultrasonically dispersed in deionized water at a dosage of 0.005 g / mL, nano-cerium oxide was added thereto, and ultrasonic dispersion was continued for 20 minutes to obtain a first solution; Polyvinyl pyrrolidone was added to ethylene glycol at a dosage ratio of 0.008 g / mL, and the mixture was stirred for 12 min under the condition of 120 min to obtain a second solution; The first solution and the second solution were mixed at a mass ratio of 1:0.2 at 80 r / min for 10 min, and then heat-treated at 120°C for 6 h. After centrifugation, the mixture was washed twice with deionized water, dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified halloysite nanotubes.

[0022] Furthermore, the added amount of nano-cerium oxide is 0.14% of the mass of the halloysite nanotubes.

[0023] In this embodiment, it should be noted that the halloysite nanotubes were purchased from Angxing New Carbon Materials Changzhou Co., Ltd.

[0024] In addition, the preparation process of the functional additive is as follows: An appropriate amount of silicon nitride chopped fibers was placed in an appropriate amount of deionized water at a dosage ratio of 0.002 g / mL and ultrasonically dispersed for 20 minutes, and then boron nitride was added thereto, and treated at 450 r / min and 60° C. for 30 minutes. After suction filtration, the obtained filter cake was placed at 1250° C. for 70 minutes, and ground after cooling to obtain a fiber base material; An appropriate amount of fiber base material is placed in an appropriate amount of the first modifier at a dosage ratio of 0.025 g / mL, and ultrasonically dispersed for 20 minutes, and then stirred at 82°C and 240 r / min for 300 minutes. After suction filtration, the obtained filter cake is washed twice with deionized water, and then placed in a vacuum drying oven at 80°C to dry to constant weight, and crushed to obtain modified fiber; An appropriate amount of montmorillonite was placed in an appropriate amount of the second modifier at a dosage ratio of 0.025 g / mL, and ultrasonically dispersed for 40 minutes, and then stirred at 80°C and 320 r / min for 360 minutes. After suction filtration, the obtained filter cake was washed twice with deionized water, and then dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified montmorillonite; The modified fiber and the modified montmorillonite were fully mixed at a mass ratio of 1:0.8 to obtain a mixed base material, and then an appropriate amount of the mixed base material was placed in an appropriate amount of N,N-dimethylformamide at a dosage ratio of 0.12 g / mL and ultrasonically dispersed for 40 minutes.

[0025] Furthermore, the amount of boron nitride added is 0.22% of the mass of the silicon nitride chopped fibers.

[0026] The first modifier is prepared by mixing anhydrous ethanol, γ-glycidyloxypropyltrimethoxysilane and deionized water in a mass ratio of 1:0.04:0.16.

[0027] The second modifier is prepared by mixing anhydrous ethanol, 3-aminopropyltriethoxysilane and deionized water in a mass ratio of 1:0.03:0.15.

[0028] In this embodiment, it should be noted that the silicon nitride chopped fibers were purchased from Qinghe Chaotai Metal Materials Co., Ltd., and the montmorillonite was purchased from Zhejiang Fenghong New Materials Co., Ltd.

[0029] Among them, the plasticizer is dioctyl phthalate, and the stabilizer is epoxidized soybean oil.

[0030] In this embodiment, it should be noted that the epoxidized soybean oil was purchased from Shandong Chuangying Chemical Co., Ltd.

[0031] In addition, this embodiment also provides a method for preparing the outdoor high-temperature printed wood grain simulated outdoor film material, comprising the following steps: Step 1: accurately weigh polyvinyl chloride, compound nano powder, functional additives, plasticizers, stabilizers and titanium dioxide, and put the raw materials into a mixing device for high-speed mixing, and then mix them in a double-roll open mill with a front and rear roller temperature of 160°C and a roller distance of 1mm for 20 minutes; Step 2: After the mixing is completed, hot pressing is performed on a flat plate press at 200° C. for 20 minutes, and after cooling, a base film is obtained; Step 3: Print wood grain on the surface of the base film according to the pattern requirements to obtain a finished outdoor high-temperature printed wood grain simulated outdoor film material.

[0032] Example 2: The preparation method of the outdoor high temperature printed wood grain simulated outdoor film provided in this example is basically the same as that in Example 1, except that: the specific raw material composition and the specific preparation method of the outdoor high temperature printed wood grain simulated outdoor film in this example are different; the specific raw material composition and the specific preparation method of the outdoor high temperature printed wood grain simulated outdoor film in this example are as follows: An outdoor high-temperature printed wood grain simulated outdoor film material is composed of the following raw materials in parts by weight: 110 parts of polyvinyl chloride, 4 parts of compounded nano powder, 4 parts of functional additives, 3 parts of plasticizers, 3 parts of stabilizers and 4 parts of titanium dioxide.

[0033] The composite nano powder is prepared by mixing modified halloysite nanotubes and nano calcium silicate in a mass ratio of 1:0.6.

[0034] In this embodiment, it should be noted that the polyvinyl chloride was purchased from Dongguan Xuanyuan Plastic Co., Ltd.

[0035] Furthermore, the preparation process of the modified halloysite nanotubes is as follows: The halloysite nanotubes are ultrasonically dispersed in deionized water at a dosage ratio of 0.007 g / mL, and nano-cerium oxide is added thereto, and the ultrasonic dispersion is continued for 20 to 30 minutes to obtain a first solution; Polyvinyl pyrrolidone was added to ethylene glycol at a dosage ratio of 0.01 g / mL, and the mixture was stirred for 13 min under the condition of 130 min to obtain a second solution; The first solution and the second solution were mixed at a mass ratio of 1:0.5 at 90 r / min for 13 min, and then heat-treated at 125°C for 7 h. After centrifugation, the mixture was washed three times with deionized water, dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified halloysite nanotubes.

[0036] Furthermore, the added amount of nano-cerium oxide is 0.19% of the mass of the halloysite nanotubes.

[0037] In this embodiment, it should be noted that the halloysite nanotubes were purchased from Angxing New Carbon Materials Changzhou Co., Ltd.

[0038] In addition, the preparation process of the functional additive is as follows: An appropriate amount of silicon nitride chopped fibers was placed in an appropriate amount of deionized water at a dosage ratio of 0.007 g / mL and ultrasonically dispersed for 25 minutes, and then boron nitride was added thereto, and treated at 500 r / min and 65° C. for 35 minutes. After suction filtration, the obtained filter cake was placed at 1275° C. for 75 minutes, and ground after cooling to obtain a fiber base material; An appropriate amount of fiber base material is placed in an appropriate amount of the first modifier at a dosage ratio of 0.04 g / mL, and ultrasonically dispersed for 25 minutes, and then stirred at 85°C and 290 r / min for 310 minutes. After suction filtration, the obtained filter cake is washed with deionized water for 3 times, and then placed in a vacuum drying oven at 80°C to dry to constant weight, and crushed to obtain modified fiber; An appropriate amount of montmorillonite was placed in an appropriate amount of the second modifier at a dosage ratio of 0.04 g / mL, and ultrasonically dispersed for 45 minutes, and then stirred at 85°C and 325 r / min for 380 minutes. After suction filtration, the obtained filter cake was washed with deionized water for 3 times, and then dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified montmorillonite; The modified fiber and the modified montmorillonite were fully mixed at a mass ratio of 1:1 to obtain a mixed base material, and then an appropriate amount of the mixed base material was placed in an appropriate amount of N,N-dimethylformamide at a dosage ratio of 0.17 g / mL and ultrasonically dispersed for 45 minutes.

[0039] Furthermore, the amount of boron nitride added is 0.27% of the mass of the silicon nitride chopped fibers.

[0040] The first modifier is prepared by mixing anhydrous ethanol, γ-glycidyloxypropyltrimethoxysilane and deionized water in a mass ratio of 1:0.06:0.21.

[0041] The second modifier is prepared by mixing anhydrous ethanol, 3-aminopropyltriethoxysilane and deionized water in a mass ratio of 1:0.05:0.25.

[0042] In this embodiment, it should be noted that the silicon nitride chopped fibers were purchased from Qinghe Chaotai Metal Materials Co., Ltd., and the montmorillonite was purchased from Zhejiang Fenghong New Materials Co., Ltd.

[0043] Wherein, dioctyl sebacate is selected as the plasticizer, and hydrotalcite is selected as the stabilizer.

[0044] In this embodiment, it should be noted that the hydrotalcite was purchased from Kaisima (Dandong) High-tech Materials Technology Co., Ltd.

[0045] In addition, this embodiment also provides a method for preparing the outdoor high-temperature printed wood grain simulated outdoor film material, comprising the following steps: Step 1: accurately weigh polyvinyl chloride, compound nano powder, functional additives, plasticizers, stabilizers and titanium dioxide, and put the raw materials into a mixing device for high-speed mixing, and then mix them in a double-roll open mill with a front and rear roller temperature of 165°C and a roller distance of 1mm for 17 minutes; Step 2: After the mixing is completed, hot pressing is performed on a flat press at 195°C for 17 minutes, and after cooling, a base film is obtained; Step 3: Print wood grain on the surface of the base film according to the pattern requirements to obtain a finished outdoor high-temperature printed wood grain simulated outdoor film material.

[0046] Example 3: The preparation method of the outdoor high temperature printed wood grain simulated outdoor film provided in this example is basically the same as that in Example 1, except that: the specific raw material composition and the specific preparation method of the outdoor high temperature printed wood grain simulated outdoor film in this example are different; the specific raw material composition and the specific preparation method of the outdoor high temperature printed wood grain simulated outdoor film in this example are as follows: An outdoor high-temperature printed wood grain simulated outdoor film material is composed of the following raw materials in parts by weight: 120 parts of polyvinyl chloride, 6 parts of compound nano powder, 5 parts of functional additives, 4 parts of plasticizers, 4 parts of stabilizers and 5 parts of titanium dioxide.

[0047] The composite nano powder is prepared by mixing modified halloysite nanotubes and nano calcium silicate in a mass ratio of 1:0.8.

[0048] In this embodiment, it should be noted that the polyvinyl chloride was purchased from Dongguan Xuanyuan Plastic Co., Ltd.

[0049] Furthermore, the preparation process of the modified halloysite nanotubes is as follows: Halloysite nanotubes are ultrasonically dispersed in deionized water at a dosage of 0.01 g / mL, nano-cerium oxide is added thereto, and ultrasonic dispersion is continued for 20 to 30 minutes to obtain a first solution; Polyvinyl pyrrolidone was added to ethylene glycol at a dosage ratio of 0.012 g / mL, and the mixture was stirred for 14 min at a temperature of 140 min to obtain a second solution; The first solution and the second solution were mixed at a mass ratio of 1:0.8 at 100 r / min for 16 min, and then heat-treated at 120-130°C for 7 h. After centrifugation, the mixture was washed four times with deionized water, dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified halloysite nanotubes.

[0050] Furthermore, the added amount of nano-cerium oxide is 0.24% of the mass of the halloysite nanotubes.

[0051] In this embodiment, it should be noted that the halloysite nanotubes were purchased from Angxing New Carbon Materials Changzhou Co., Ltd.

[0052] In addition, the preparation process of the functional additive is as follows: An appropriate amount of silicon nitride chopped fibers was placed in an appropriate amount of deionized water at a dosage ratio of 0.012 g / mL and ultrasonically dispersed for 30 minutes, and then boron nitride was added thereto, and treated at 550 r / min and 70° C. for 40 minutes. After suction filtration, the obtained filter cake was placed at 1300° C. for 80 minutes, and ground after cooling to obtain a fiber base material; An appropriate amount of fiber base material was placed in an appropriate amount of the first modifier at a dosage ratio of 0.055 g / mL, and ultrasonically dispersed for 30 minutes, and then stirred at 88°C and 340 r / min for 320 minutes. After suction filtration, the obtained filter cake was washed with deionized water for 4 times, and then dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified fiber; An appropriate amount of montmorillonite was placed in an appropriate amount of the second modifier at a dosage ratio of 0.055 g / mL, and ultrasonically dispersed for 50 minutes, and then stirred at 90°C and 330 r / min for 400 minutes. After suction filtration, the obtained filter cake was washed with deionized water for 4 times, and then dried in a vacuum drying oven at 80°C to constant weight, and crushed to obtain modified montmorillonite; The modified fiber and the modified montmorillonite were fully mixed at a mass ratio of 1:1.2 to obtain a mixed base material, and then an appropriate amount of the mixed base material was placed in an appropriate amount of N,N-dimethylformamide at a dosage ratio of 0.22 g / mL and ultrasonically dispersed for 50 minutes.

[0053] Furthermore, the addition amount of boron nitride is 0.32% of the mass of the silicon nitride chopped fibers.

[0054] The first modifier is prepared by mixing anhydrous ethanol, γ-glycidyloxypropyltrimethoxysilane and deionized water in a mass ratio of 1:0.08:0.32.

[0055] The second modifier is prepared by mixing anhydrous ethanol, 3-aminopropyltriethoxysilane and deionized water in a mass ratio of 1:0.09:0.35.

[0056] In this embodiment, it should be noted that the silicon nitride chopped fibers were purchased from Qinghe Chaotai Metal Materials Co., Ltd., and the montmorillonite was purchased from Zhejiang Fenghong New Materials Co., Ltd.

[0057] Among them, the plasticizer is dioctyl phthalate, and the stabilizer is epoxidized soybean oil.

[0058] In this embodiment, it should be noted that the epoxidized soybean oil was purchased from Shandong Chuangying Chemical Co., Ltd.

[0059] In addition, this embodiment also provides a method for preparing the outdoor high-temperature printed wood grain simulated outdoor film material, comprising the following steps: Step 1: accurately weigh polyvinyl chloride, compound nano powder, functional additives, plasticizers, stabilizers and titanium dioxide, and put the raw materials into a mixing device for high-speed mixing, and then mix them in a double-roll open mill with a front and rear roller temperature of 170°C and a roller distance of 1mm for 20 minutes; Step 2: After the mixing is completed, hot pressing is performed on a flat plate press at 200° C. for 20 minutes, and after cooling, a base film is obtained; Step 3: Print wood grain on the surface of the base film according to the pattern requirements to obtain a finished outdoor high-temperature printed wood grain simulated outdoor film material.

[0060] Comparative Example 1: The difference from Example 1 is that this example does not contain composite nanopowder.

[0061] Comparative Example 2: The difference from Example 1 is that in this example, an equal amount of halloysite nanotubes is used instead of the compound nanopowder.

[0062] Comparative Example 3: The difference from Example 1 is that in this example, an equal amount of silicon nitride chopped fibers is used to replace the functional additive.

[0063] Performance test: The outdoor high temperature printed wood grain simulated outdoor film samples provided in Examples 1 to 3 and Comparative Examples 1 to 3 are marked as Examples 1 to 3 and Comparative Examples 1 to 3, respectively; and the relevant properties of the outdoor high temperature printed wood grain simulated outdoor film materials provided in Examples 1 to 3 and Comparative Examples 1 to 3 are tested as follows: 1. Mechanical test: The test method is GB / T1040.1-2018 (tensile properties), GB / T2411-2008 (Shore hardness).

[0064] 2. Heat resistance test: The test method is: press the film onto a high-temperature (160°C) metal plate coated with glue, and observe the texture changes after pressing. No obvious change is defined as level 1, change but texture exists is defined as level 2, and texture disappearance is defined as level 3.

[0065] 3. Flame retardant test: The test method is: GB / T2406-1993.

[0066] 4. Aging resistance test: The test method is: use QUV340nm to treat for 1000 hours, the light intensity is 0.8W / cm 2 .

[0067] The obtained test data are recorded in Tables 1 to 4 below.

[0068]

[0069]

[0070]

[0071]

[0072] By comparing and analyzing the relevant data in Tables 1 to 4, it can be seen that the outdoor high-temperature printed wood grain simulated outdoor film prepared by the present invention not only has good mechanical properties, but also has excellent flame retardant properties and weather resistance, effectively ensuring its quality. This shows that the outdoor high-temperature printed wood grain simulated outdoor film and the preparation method thereof provided by the present invention have a broader market prospect and are more suitable for promotion.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An outdoor high temperature printed wood grain simulated outdoor film material, characterized in that: The invention is composed of the following raw materials in parts by weight: 100-120 parts of polyvinyl chloride, 3-6 parts of compound nano powder, 3-5 parts of functional additives, 2-4 parts of plasticizers, 2-4 parts of stabilizers and 2-5 parts of titanium dioxide.

2. The outdoor high temperature printed wood grain simulated outdoor film material according to claim 1, characterized in that: The composite nano powder is prepared by mixing modified halloysite nanotubes and nano calcium silicate in a mass ratio of 1:0.5-0.

8.

3. The outdoor high temperature printed wood grain simulated outdoor film material according to claim 2, characterized in that: The preparation process of the modified halloysite nanotubes is as follows: Ultrasonic dispersion of halloysite nanotubes in deionized water at a dosage of 0.005-0.01 g / mL, adding nano-cerium oxide thereto, and continuing ultrasonic dispersion for 20-30 minutes to obtain a first solution; Polyvinyl pyrrolidone is placed in ethylene glycol at a dosage ratio of 0.008 to 0.012 g / mL, and stirred for 12 to 14 minutes at a condition of 120 to 140 minutes to obtain a second solution; The first solution and the second solution are mixed at a mass ratio of 1:0.2-0.8 at 80-100 r / min for 10-16 min, and then heat-treated at 120-130° C. for 6-7 h. After centrifugation, the mixture is washed with deionized water for 2-4 times, and then dried in a vacuum drying oven at 80° C. to constant weight, and crushed to obtain modified halloysite nanotubes.

4. The outdoor high temperature printed wood grain simulated outdoor film material according to claim 3, characterized in that: The added amount of the nano-cerium oxide is 0.14% to 0.24% of the mass of the halloysite nanotubes.

5. The outdoor high temperature printed wood grain simulated outdoor film material according to claim 1, characterized in that: The preparation process of the functional additive is as follows: An appropriate amount of silicon nitride chopped fibers is placed in an appropriate amount of deionized water at a dosage ratio of 0.002 to 0.012 g / mL for ultrasonic dispersion for 20 to 30 minutes, and then boron nitride is added thereto, and the mixture is treated at 450 to 550 r / min and 60 to 70° C. for 30 to 40 minutes. After suction filtration, the obtained filter cake is placed at 1250 to 1300° C. for 70 to 80 minutes, and then ground after cooling to obtain a fiber base material; A suitable amount of fiber base material is placed in a suitable amount of the first modifier at a dosage ratio of 0.025 to 0.055 g / mL, and ultrasonically dispersed for 20 to 30 minutes, and then stirred at 82 to 88° C. and 240 to 340 r / min for 300 to 320 minutes. After suction filtration, the obtained filter cake is washed with deionized water for 2 to 4 times, and then placed in a vacuum drying oven at 80° C. to dry to constant weight, and crushed to obtain modified fiber; An appropriate amount of montmorillonite is placed in an appropriate amount of the second modifier at a dosage ratio of 0.025 to 0.055 g / mL, and ultrasonically dispersed for 40 to 50 minutes, and then stirred at 80 to 90° C. and 320 to 330 r / min for 360 to 400 minutes. After suction filtration, the obtained filter cake is washed with deionized water for 2 to 4 times, and then placed in a vacuum drying oven at 80° C. to dry to constant weight, and crushed to obtain modified montmorillonite; The modified fiber and the modified montmorillonite are fully mixed at a mass ratio of 1:0.8-1.2 to obtain a mixed base material, and then an appropriate amount of the mixed base material is placed in an appropriate amount of N,N-dimethylformamide at a dosage ratio of 0.12-0.22 g / mL and ultrasonically dispersed for 40-50 minutes.

6. The outdoor high temperature printed wood grain simulated outdoor membrane material according to claim 5, characterized in that: The added amount of the boron nitride is 0.22% to 0.32% of the mass of the silicon nitride chopped fibers.

7. The outdoor high temperature printed wood grain simulated outdoor film material according to claim 5, characterized in that: The first modifier is prepared by mixing anhydrous ethanol, γ-glycidyloxypropyltrimethoxysilane and deionized water in a mass ratio of 1:0.04-0.08:0.16-0.

32.

8. The outdoor high temperature printed wood grain simulated outdoor membrane material according to claim 5, characterized in that: The second modifier is prepared by mixing anhydrous ethanol, 3-aminopropyltriethoxysilane and deionized water in a mass ratio of 1:0.03-0.09:0.15-0.

35.

9. The outdoor high temperature printed wood grain simulated outdoor film material according to claim 1, characterized in that: The plasticizer is selected from any one of dioctyl phthalate and dioctyl sebacate, and the stabilizer is selected from any one of epoxidized soybean oil and hydrotalcite.

10. The method for preparing an outdoor high-temperature printed wood grain simulated outdoor film material according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: accurately weigh polyvinyl chloride, compound nano powder, functional additive, plasticizer, stabilizer and titanium dioxide, and put the raw materials into a mixing device for high-speed mixing, and then mix them in a double-roll open mill with a front and rear roller temperature of 160-170°C and a roller distance of 1mm for 15-20 minutes; Step 2: After the mixing is completed, hot pressing is performed on a flat press at 190-200° C. for 15-20 minutes, and after cooling, a base film is obtained; Step 3: Print wood grain on the surface of the base film according to the pattern requirements to obtain a finished outdoor high-temperature printed wood grain simulated outdoor film material.

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