阅读说明：本技术 一种多功能抗老化聚碳酸酯纤维膜材料及其制备方法 (Multifunctional anti-aging polycarbonate fiber membrane material and preparation method thereof ) 是由 程志成 程勇 胥建平 于 2021-08-16 设计创作，主要内容包括：本发明具体公开了一种多功能抗老化聚碳酸酯纤维膜材料及其制备方法。该方法涉及氨基化氧化锌和三聚氯氰发生取代反应生成三聚氯氰接枝氧化锌,将其在碳酸钠水溶液中与三聚氯氰、乙二胺原位聚合反应得到胺基封端的超支化乙二胺三嗪聚合物接枝氧化锌,同时制备硅烷化LDHs,然后将胺基封端的超支化乙二胺三嗪聚合物接枝氧化锌、硅烷化LDHs和聚碳酸酯混合得到分散均匀的纺丝溶液,通过静电纺丝最后得到得到抗老化的聚碳酸酯纤维膜材料。本发明提供的一种多功能抗老化聚碳酸酯纤维膜材料,具有较高的抗紫外能力和韧性性能。(The invention particularly discloses a multifunctional anti-aging polycarbonate fiber membrane material and a preparation method thereof. The method relates to a method for producing cyanuric chloride grafted zinc oxide through substitution reaction of aminated zinc oxide and cyanuric chloride, the cyanuric chloride grafted zinc oxide is obtained through in-situ polymerization reaction of the aminated zinc oxide and cyanuric chloride and ethylenediamine in a sodium carbonate aqueous solution, amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide is obtained, silanized LDHs is prepared at the same time, then the amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide, silanized LDHs and polycarbonate are mixed to obtain a uniformly dispersed spinning solution, and finally the anti-aging polycarbonate fiber membrane material is obtained through electrostatic spinning. The multifunctional anti-aging polycarbonate fiber membrane material provided by the invention has higher ultraviolet resistance and toughness performance.)

1. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material is characterized by comprising the following steps:

(1) ultrasonically dispersing a certain amount of aminated zinc oxide in a tetrahydrofuran solvent, adding cyanuric chloride and triethylamine, stirring and mixing uniformly to generate substitution reaction, and then filtering, washing and drying to obtain cyanuric chloride grafted zinc oxide;

(2) adding cyanuric chloride grafted zinc oxide into an acetone solvent for ultrasonic dispersion, simultaneously adding cyanuric chloride and ethylenediamine into a certain amount of sodium carbonate aqueous solution to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly to perform in-situ polymerization, and then filtering, washing and drying to obtain amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide;

(3) adding layered double-hydroxyl composite metal hydroxide LDHs nano powder into deionized water for ultrasonic dispersion, then adding a certain amount of water-soluble silane coupling agent for stirring reaction, then standing for reaction, filtering and drying to obtain silanized LDHs;

(4) dispersing amino-terminated hyperbranched ethylenediamine triazine polymer grafted zinc oxide, silanized LDHs and polycarbonate in N-N-dimethylformamide, magnetically stirring for 12 hours at the temperature of 8 ℃ by using a constant-temperature magnetic stirrer, then performing ultrasound for 3 hours in a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution, performing electrostatic spinning to obtain a polycarbonate fiber membrane, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

2. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the mass ratio of zinc amide, cyanuric chloride and triethylamine in step (1) is 10:4.5-5.5: 3-4.

3. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the temperature of the substitution reaction in the step (1) is 0-5 ℃ and the reaction time is 4-6 h.

4. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the mass ratio of the cyanuric chloride grafted zinc oxide to the cyanuric chloride to the ethylenediamine to the sodium carbonate in the step (2) is 2:5-7:4-6: 2-3.

5. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the temperature of the in-situ polymerization reaction in step (2) is 15-40 ℃, and the time of the in-situ polymerization reaction is 6-12 h.

6. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the mass ratio of the LDHs to the silane coupling agent in the step (3) is 5: 2-4.

7. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein in the step (3), the stirring reaction temperature is 20-30 ℃, the stirring reaction time is 10-15min, and the standing reaction time is 30-60 min.

8. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the mass ratio of the amine-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide, the silanized LDHs, the polycarbonate and the N-N-dimethylformamide in the step (4) is 1-2:1-2:20: 100.

9. The preparation method of the multifunctional anti-aging polycarbonate fiber membrane material as claimed in claim 1, wherein the spinning voltage in the step (4) is +20.5kV, the distance from the needle to the receiving plate is 15cm, the surface of the receiving plate is coated with aluminum foil, the ambient room temperature is 25 ℃, the relative humidity is 30%, and the spinning time is 60-90 min.

10. A multifunctional anti-aging polycarbonate fiber membrane material, which is characterized by being prepared by the preparation method of any one of claims 1 to 9.

Technical Field

The invention relates to the field of Polycarbonate (PC) films, in particular to a multifunctional anti-aging fiber film material.

Background

The plastic products show a steady growth trend in the world economic development growth trend, the application field of the plastic products is continuously expanded, wherein the plastic packaging material is developed more and more rapidly in the globalization process, the status and the function of the plastic packaging industry in life and production are more and more obvious, the social demand is increased, the requirements on the quality and the quantity of the packaging plastic are greatly improved, and the polycarbonate plastic film is a green and environment-friendly packaging material due to the fact that the polycarbonate plastic film is non-toxic and harmless and is easy to recycle.

Polycarbonate films have many advantages and are widely used, but polycarbonate films have poor ultraviolet resistance, high tensile strength and poor toughness, and need to be modified correspondingly to improve the comprehensive performance.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems, the invention aims to provide a multifunctional anti-aging polycarbonate fiber membrane material and a preparation method thereof, and solves the problems of poor ultraviolet resistance and poor toughness of the traditional aging fiber membrane material.

(II) technical scheme

In order to realize the aim, the invention provides a preparation method of a multifunctional anti-aging polycarbonate fiber membrane material, which comprises the following steps:

(1) ultrasonically dispersing a certain amount of aminated zinc oxide in a tetrahydrofuran solvent, adding cyanuric chloride and triethylamine, stirring and mixing uniformly to generate substitution reaction, and then filtering, washing and drying to obtain cyanuric chloride grafted zinc oxide;

(2) adding cyanuric chloride grafted zinc oxide into an acetone solvent for ultrasonic dispersion, simultaneously adding cyanuric chloride and ethylenediamine into a certain amount of sodium carbonate aqueous solution to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly to perform in-situ polymerization, and then filtering, washing and drying to obtain amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide;

(3) adding layered double-hydroxyl composite metal hydroxide LDHs nano powder into deionized water for ultrasonic dispersion, then adding a certain amount of water-soluble silane coupling agent for stirring reaction, then standing for reaction, filtering and drying to obtain silanized LDHs;

(4) dispersing the amino-terminated hyperbranched ethylenediamine triazine polymer grafted zinc oxide, silanized LDHs and polycarbonate in N-N-dimethylformamide, magnetically stirring for 12 hours at the temperature of 8 ℃ by using a constant-temperature magnetic stirrer, and then performing ultrasound for 3 hours by using a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. And (3) obtaining a polycarbonate fiber membrane through electrostatic spinning, and finally, performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

Preferably, the mass ratio of the zinc oxide amide, the cyanuric chloride and the triethylamine in the step (1) is 10:4.5-5.5: 3-4.

Preferably, the temperature of the substitution reaction in the step (1) is 0-5 ℃, and the reaction time is 4-6 h.

Preferably, the mass ratio of the cyanuric chloride grafted zinc oxide to the cyanuric chloride to the ethylenediamine to the sodium carbonate in the step (2) is 2:5-7:4-6: 2-3.

Preferably, the temperature of the in-situ polymerization reaction in the step (2) is 15-40 ℃, and the time of the in-situ polymerization reaction is 6-12 h.

Preferably, the mass ratio of the LDHs to the silane coupling agent in the step (3) is 5: 2-4.

Preferably, in the step (3), the stirring reaction temperature is 20-30 ℃, the stirring reaction time is 10-15min, and the standing reaction time is 30-60 min.

Preferably, the mass ratio of the amine-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide, the silanized LDHs, the polycarbonate and the N-N-dimethylformamide in the step (4) is 1-2:1-2:20: 100.

Preferably, the spinning voltage in the step (4) is +20.5kV, the distance from the needle to the receiving plate is 15cm, the surface of the receiving plate is coated with aluminum foil, the ambient room temperature is 25 ℃, the relative humidity is 30%, and the spinning time is 60-90 min.

The invention also provides a multifunctional anti-aging polycarbonate fiber membrane material prepared by the method.

(III) advantageous technical effects

Compared with the prior art, the invention has the beneficial technical effects that:

a multifunctional anti-ageing polycarbonate fibre membrane material is prepared from the hyperbranched polymer (such as hyperbranched polyamine) containing a lot of flexible long chains for effectively improving the toughness of matrix, and the polycarbonate membrane obtained by mixing it with it has high anti-ultraviolet power and toughness. The hyperbranched ethylenediamine-triazine polymer has a three-dimensional network structure, the three-dimensional network structure contains a large number of flexible long chains, the toughness of a polycarbonate film of a matrix can be effectively improved, meanwhile, the tail end contains a large number of terminal amine groups with high activity, the mechanical property and compatibility of the matrix can be effectively improved, chemical micro-crosslinking is generated between the terminal amine groups and the matrix, and the hyperbranched triazine grafted zinc oxide modified polycarbonate film obtained after mixing has excellent ultraviolet resistance and toughness.

The zinc oxide is used as a third-generation semiconductor material, has a series of advantages of forbidden bandwidth, low price, environmental friendliness and the like, has good ultraviolet absorption capacity, and can improve the ultraviolet resistance of the polycarbonate film by using an organic ultraviolet absorbent triazine ultraviolet absorbent. The polycarbonate film can age under the irradiation of ultraviolet light to influence the performance of the polycarbonate film, the nano zinc oxide has the characteristic of forbidden bandwidth, electrons on a valence band of the nano zinc oxide can absorb the ultraviolet light and are excited on a conduction band to generate electron-hole pairs, the nano zinc oxide has scattering capacity on the ultraviolet light due to a nano size effect and plays an anti-ultraviolet role, the anti-ultraviolet capacity of a polycarbonate film matrix can be effectively enhanced due to the addition of a triazine ultraviolet absorbent, six-membered chelate rings are formed between hydroxyl groups on a benzene ring of the triazine ultraviolet absorbent and nitrogen atoms on adjacent triazine rings, and when the polycarbonate film is irradiated by the ultraviolet light, the chelate rings are opened and electrons jump to absorb a large amount of ultraviolet light.

Layered Double Hydroxide (LDHs) is an inorganic supramolecular material. The LDHs belongs to an anionic layered structure, and is a supermolecular material assembled by a main body laminate with positive charges and interlayer anions through the interaction of non-covalent bonds, the unique layered structure has a good shielding effect on ultraviolet light, and meanwhile, a hydrotalcite structure can form a penetrating cross-linked network with organic groups to shield ultraviolet light and improve the toughness and strength of a matrix.

A multifunctional anti-aging polycarbonate fiber membrane material is prepared by blending a functional liquid into a membrane by an electrostatic spinning method, and forming the membrane by blended polycarbonate fibers, so that the toughness and tensile strength of the membrane are integrally improved.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are fully described below, and the described embodiments are some, but not all, embodiments of the present invention; unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood in the art to which this invention belongs.

The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In this example, unless otherwise specified, commercially available products were generally used for each component.

The specific implementation mode is as follows:

example 1

(1) Ultrasonically dispersing 10g of aminated zinc oxide in 40g of tetrahydrofuran solvent, adding 4.5g of cyanuric chloride and 3g of triethylamine, stirring and mixing uniformly, carrying out substitution reaction at 0 ℃ for 4 hours, filtering, washing and drying to obtain cyanuric chloride grafted zinc oxide;

(2) adding 10g of cyanuric chloride grafted zinc oxide into 30g of acetone solvent for ultrasonic dispersion, simultaneously adding 25g of cyanuric chloride and 20g of ethylenediamine into 80g of sodium carbonate aqueous solution (wherein the mass of the sodium carbonate is 10g) to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly, carrying out in-situ polymerization reaction at 15 ℃ for 6h, filtering, washing and drying after the reaction is finished, thus obtaining the amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide;

(3) adding 5g of LDHs nano powder into 100g of deionized water for ultrasonic dispersion, then adding 2g of water-soluble silane coupling agent, stirring and reacting at 20 ℃ for 10min, standing and reacting for 30min, then filtering and drying to obtain silanized LDHs;

(4) 1g of amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide, 1g of silanized LDHs and 20g of polycarbonate are dispersed in 100g of N-N-dimethylformamide, magnetically stirred for 12h at 8 ℃ by a constant-temperature magnetic stirrer, and then subjected to ultrasonic treatment for 3h by a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. Setting the spinning voltage to be +20.5kV, setting the distance between a needle head and a receiving plate to be 15cm, covering aluminum foil on the surface of the receiving plate, enabling the ambient room temperature to be 25 ℃, the relative humidity to be 30%, spinning for 60min, obtaining a polycarbonate fiber membrane through a spinning machine, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

Example 2

(1) Ultrasonically dispersing 10g of aminated zinc oxide in 40g of tetrahydrofuran solvent, adding 4.8g of cyanuric chloride and 3.4g of triethylamine, stirring and mixing uniformly, carrying out substitution reaction for 4 hours at 2 ℃, and then filtering, washing and drying to obtain cyanuric chloride grafted zinc oxide;

(2) adding 10g of cyanuric chloride grafted zinc oxide into 30g of acetone solvent for ultrasonic dispersion, simultaneously adding 28g of cyanuric chloride and 24g of ethylenediamine into 80g of sodium carbonate aqueous solution (wherein the mass of the sodium carbonate is 13g) to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly, carrying out in-situ polymerization reaction at 20 ℃ for 8h, filtering, washing and drying to obtain amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide;

(3) adding 5g of LDHs nano powder into 100g of deionized water for ultrasonic dispersion, then adding 3g of water-soluble silane coupling agent, stirring and reacting for 10min at 20 ℃, standing and reacting for 30min, filtering and drying to obtain silanized LDHs;

(4) dispersing 2g of amino-terminated hyperbranched ethylenediamine triazine polymer grafted zinc oxide, 1g of silanized LDHs and 20g of polycarbonate in 100g of N-N-dimethylformamide, magnetically stirring for 12h at 8 ℃ by using a constant-temperature magnetic stirrer, and then performing ultrasonic treatment for 3h by using a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. Setting the spinning voltage to be +20.5kV, setting the distance between a needle head and a receiving plate to be 15cm, covering aluminum foil on the surface of the receiving plate, enabling the ambient room temperature to be 25 ℃, the relative humidity to be 30%, spinning for 70min, obtaining a polycarbonate fiber membrane through a spinning machine, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

Example 3

(1) Ultrasonically dispersing 10g of aminated zinc oxide in 40g of tetrahydrofuran solvent, adding 5g of cyanuric chloride and 3.6g of triethylamine, stirring and mixing uniformly, carrying out substitution reaction at 4 ℃ for 3h, filtering, washing and drying to obtain cyanuric chloride grafted zinc oxide;

(2) adding 10g of cyanuric chloride grafted zinc oxide into 30g of acetone solvent for ultrasonic dispersion, simultaneously adding 33g of cyanuric chloride and 28g of ethylenediamine into 80g of sodium carbonate aqueous solution (wherein the mass of the sodium carbonate is 14g) to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly, carrying out in-situ polymerization reaction at 30 ℃ for 10 hours, and after the reaction is finished, carrying out suction filtration, washing and drying to obtain the amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide;

(3) adding 5g of LDHs nano powder into 100g of deionized water for ultrasonic dispersion, then adding 3g of water-soluble silane coupling agent, stirring and reacting for 10min at 30 ℃, standing and reacting for 30min, filtering and drying to obtain silanized LDHs;

(4) 1g of amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide, 2g of silanized LDHs and 20g of polycarbonate are dispersed in 100g of N-N-dimethylformamide, magnetically stirred for 12h at 8 ℃ by a constant-temperature magnetic stirrer, and then ultrasonically treated for 3h by a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. Setting the spinning voltage to be +20.5kV, setting the distance between a needle head and a receiving plate to be 15cm, covering aluminum foil on the surface of the receiving plate, enabling the ambient room temperature to be 25 ℃, the relative humidity to be 30%, spinning for 80min, obtaining a polycarbonate fiber membrane through a spinning machine, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

Example 4

(1) Ultrasonically dispersing 10g of aminated zinc oxide in 40g of tetrahydrofuran solvent, adding 5.5g of cyanuric chloride and 4.0g of triethylamine, stirring and mixing uniformly, carrying out substitution reaction at 5 ℃ for 6 hours, and then filtering, washing and drying to obtain cyanuric chloride grafted zinc oxide;

(2) adding 10g of cyanuric chloride grafted zinc oxide into 30g of acetone solvent for ultrasonic dispersion, simultaneously adding 35g of cyanuric chloride and 30g of ethylenediamine into 80g of sodium carbonate aqueous solution (wherein the mass of the sodium carbonate is 15g) to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly, carrying out in-situ polymerization reaction at 40 ℃ for 12h, after the reaction is finished, carrying out suction filtration, washing and drying to obtain the amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide;

(3) adding 5g of LDHs nano powder into 100g of deionized water for ultrasonic dispersion, then adding 4g of water-soluble silane coupling agent, stirring and reacting for 15min at 30 ℃, standing and reacting for 60min, filtering and drying to obtain silanized LDHs;

(4) dispersing 2g of amino-terminated hyperbranched ethylenediamine triazine polymer grafted zinc oxide, 2g of silanized LDHs and 20g of polycarbonate in 100g of N-N-dimethylformamide, magnetically stirring for 12h at 8 ℃ by using a constant-temperature magnetic stirrer, and then performing ultrasonic treatment for 3h by using a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. Setting the spinning voltage to be +20.5kV, setting the distance between a needle head and a receiving plate to be 15cm, covering aluminum foil on the surface of the receiving plate, enabling the ambient room temperature to be 25 ℃, the relative humidity to be 30%, spinning for 90min, obtaining a polycarbonate fiber membrane through a spinning machine, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

Comparative example 1

(1) Adding 5g of LDHs nano powder into 100g of deionized water for ultrasonic dispersion, then adding 2g of water-soluble silane coupling agent, stirring and reacting for 10min at 20 ℃, standing and reacting for 30min, then filtering and drying to obtain silanized LDHs;

(2) dispersing 1g of zinc oxide, 1g of silanized LDHs and 20g of polycarbonate in 100g N-N-dimethylformamide, magnetically stirring for 12h at 8 ℃ by using a constant-temperature magnetic stirrer, and then performing ultrasonic treatment for 3h by using a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. Setting the spinning voltage to be +20.5kV, setting the distance between a needle head and a receiving plate to be 15cm, covering aluminum foil on the surface of the receiving plate, enabling the ambient room temperature to be 25 ℃, the relative humidity to be 30%, spinning for 60min, obtaining a polycarbonate fiber membrane through a spinning machine, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

Comparative example 2

(1) Ultrasonically dispersing 10g of aminated zinc oxide in 40g of tetrahydrofuran solvent, adding 4.5g of cyanuric chloride and 3g of triethylamine, stirring and mixing uniformly, carrying out substitution reaction at 0 ℃ for 4 hours, filtering, washing and drying after the reaction is finished, thus obtaining cyanuric chloride grafted zinc oxide;

(2) adding 10g of cyanuric chloride grafted zinc oxide into 30g of acetone solvent for ultrasonic dispersion, simultaneously adding 25g of cyanuric chloride and 20g of ethylenediamine into 80g of sodium carbonate (wherein the mass of the sodium carbonate is 10g) aqueous solution to form a mixed solution, slowly adding the mixed solution into the cyanuric chloride grafted zinc oxide solution, stirring and mixing uniformly, carrying out in-situ polymerization reaction at 15 ℃ for 6 hours, after the reaction is finished, carrying out suction filtration, washing and drying to obtain amino-terminated hyperbranched ethylenediamine triazine polymer grafted zinc oxide;

(3) 1g of amino-terminated hyperbranched ethylenediamine-triazine polymer grafted zinc oxide and 20g of polycarbonate are dispersed in 100g N-N-dimethylformamide, magnetically stirred for 12 hours at the temperature of 8 ℃ by a constant-temperature magnetic stirrer, and then ultrasonically treated for 3 hours by a numerical control ultrasonic cleaner to obtain a uniformly dispersed spinning solution. Setting the spinning voltage to be +20.5kV, setting the distance between a needle head and a receiving plate to be 15cm, covering aluminum foil on the surface of the receiving plate, enabling the ambient room temperature to be 25 ℃, the relative humidity to be 30%, spinning for 60min, obtaining a polycarbonate fiber membrane through a spinning machine, and finally performing vacuum drying to obtain the anti-aging polycarbonate fiber membrane material.

The polycarbonate fiber films applied to ultraviolet aging resistance obtained in examples 1 to 4 and comparative examples 1 to 2 were placed in an ultraviolet aging box of 128W and irradiated for 30 days, and the aged wood plastic foam board was photographed under natural light by using a digital camera of 2000 ten thousand pixels, and the results were as follows.

The polycarbonate fiber films applied to ultraviolet aging resistance obtained in examples 1 to 4 and comparative examples 1 to 2 were placed in an ultraviolet aging oven of 128W and irradiated for 30 days, and the impact strength before and after aging of the polycarbonate fiber films applied to ultraviolet aging resistance obtained in examples and comparative examples was tested using a pendulum impact tester of type JB-300B, and the results are as follows.

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 attributes 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.