CN114292440A

CN114292440A - Composite light stabilizer, plastic-wood composite material composition and plastic-wood product

Info

Publication number: CN114292440A
Application number: CN202111675702.6A
Authority: CN
Inventors: 姚广; 安平; 罗海; 李海平
Original assignee: Rianlon Corp
Current assignee: Rianlon Corp
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-08
Anticipated expiration: 2041-12-31
Also published as: CN114292440B

Abstract

The invention provides a composite light stabilizer, a plastic-wood composite material composition and a plastic-wood product, and relates to the technical field of light stabilizers. The composite light stabilizer provided by the invention comprises: the ultraviolet light absorber and the hindered amine light stabilizer are used, and the mass ratio of the ultraviolet light absorber to the hindered amine light stabilizer is (10-80) to (60-10); wherein the ultraviolet absorbent is at least one selected from UV326, UV329, UV-P, UV-1164 and UV-2908; the hindered amine light stabilizer is at least one selected from the group consisting of UV-622, UV-944, UV-2020, and UV-3853. According to the invention, the specific ultraviolet absorber and the hindered amine light stabilizer are selected for compounding and added into the plastic-wood composite material, and the ultraviolet absorber and the hindered amine light stabilizer can be cooperatively matched with the plastic base material, so that the weather resistance of the plastic-wood composite material is obviously improved, the attractiveness of the plastic-wood composite material is maintained, and the service life of the plastic-wood composite material is prolonged.

Description

Composite light stabilizer, plastic-wood composite material composition and plastic-wood product

Technical Field

The invention relates to the technical field of light stabilizers, and particularly relates to a composite light stabilizer, a plastic-wood composite material composition and a plastic-wood product.

Background

The plastic-wood composite material is a basic material which is reversible, recyclable and diversified in morphological structure and is formed by processing and molding by using primary biomass materials such as sawdust, bamboo dust, wheat straw, bran coat, peanut shell and cotton straw as main materials and by using the characteristics of high molecular interface chemical principle and plastic filling modification and compounding a plastic base material in a certain proportion through a special process. As the plastic-wood composite material is used outdoors, the plastic-wood composite material is easy to be subjected to light aging after being irradiated for a long time, so that the problems of deformation, fracture, fading and the like are caused, and the use and the appearance are influenced.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention mainly aims to provide a composite light stabilizer for a plastic-wood composite material, a plastic-wood composite material composition and a plastic-wood product, so as to solve the problem that the plastic-wood composite material in the prior art is easy to age, deform, break and fade after being irradiated by light for a long time.

In order to achieve the above object, according to one aspect of the present invention, there is provided a composite light stabilizer including: the ultraviolet light absorber and the hindered amine light stabilizer are mixed according to the mass ratio of (10-80): (60-10);

wherein the ultraviolet absorber is at least one selected from 2- (2 '-hydroxy-3' -tert-butyl-5 '-methylphenyl) -5-chlorobenzotriazole, 2- (2' -hydroxy-5 '-tert-octylphenyl) benzotriazole, 2- (2' -hydroxy-5-methylphenyl) benzotriazole, 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol and hexadecyl 3, 5-bis (1, 1-dimethylethyl) -4-hydroxybenzoate; the hindered amine light stabilizer is selected from the group consisting of polymers of N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine with the reaction product of 2,4, 6-trichloro-1, 3, 5-triazine and N-butyl-1-butylamine with N-butyl-2, 2,6, 6-tetramethyl-4-piperidylamine, poly (4-hydroxy-2, 2,6, 6-tetramethyl-1-piperidylethanol) succinate, poly- { [6- [ (1,1,3, 3-tetramethylbutyl) -imino ] -1,3, 5-triazine-2, 4-diyl ] [2- (2,2,6, 6-tetramethylpiperidyl) -amino ] -hexylene- [4- (2,2,6, 6-tetramethylpiperidyl) -imino ] } or 2,2,6, 6-tetramethyl-4-piperidyl esterified product.

Further, the ultraviolet absorber is selected from 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol and/or 3, 5-bis (1, 1-dimethylethyl) -4-hydroxybenzoic acid hexadecyl ester; the hindered amine light stabilizer is selected from polymers of N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine with the reaction product of 2,4, 6-trichloro-1, 3, 5-triazine and N-butyl-1-butylamine with N-butyl-2, 2,6, 6-tetramethyl-4-piperidyl amine, and/or said 2,2,6, 6-tetramethyl-4-piperidyl esters.

Further, the mass ratio of the ultraviolet absorbent to the hindered amine light stabilizer is (40-50): (40-30).

Further, the composite light stabilizer also includes a light-shielding agent.

Further, the composite light stabilizer comprises, by mass, 10% to 30% of a light shielding agent, 10% to 80% of an ultraviolet absorber and 10% to 60% of a hindered amine light stabilizer.

Further, the composite light stabilizer includes: 10 to 30 percent of light-shielding agent, 40 to 50 percent of ultraviolet absorbent and 30 to 40 percent of hindered amine light stabilizer.

Further, the light-shielding agent includes nano-sized zinc oxide and/or nano-sized titanium dioxide.

According to another aspect of the present invention, there is provided a plastic wood composite composition comprising a plastic base material, a biomass material and a light stabilizer, the light stabilizer being any one of the composite light stabilizers provided above.

Further, the mass ratio of the plastic base material to the light stabilizer is 100 (0.05-1.2), and preferably 100 (0.1-1).

Further, the mass ratio of the plastic base material to the biomass material is 100 (5-20), and preferably 100 (8-12).

Further, the plastic base material comprises at least one of PE, PP, ASA, EVA or ASA-PVC copolymer.

Further, the biomass material comprises at least one of wood flour, bamboo dust, wheat straw, bran coat, peanut shell or cotton straw.

Further, the plastic-wood composite material composition also comprises an auxiliary agent, wherein the auxiliary agent comprises at least one of a lubricant, an antioxidant or a pigment.

According to a third aspect of the present invention, there is provided a wood-plastic product, at least the exposed surface of which comprises any one of the composite light stabilizers provided above.

Further, the wood-plastic product is a co-extruded wood-plastic product, which comprises a skin layer, wherein the skin layer is prepared from any one of the wood-plastic composite material compositions provided in the above.

By applying the technical scheme of the invention, the specific ultraviolet absorbent and the hindered amine light stabilizer are selected to be compounded and added into the plastic-wood composite material, and the ultraviolet absorbent and the hindered amine light stabilizer can be cooperatively matched with the plastic base material, so that the weather resistance of the plastic-wood composite material is obviously improved, the attractiveness of the plastic-wood composite material is maintained, and the service life of the plastic-wood composite material is prolonged.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to examples.

As analyzed in the background of the present application, the present application provides a composite light stabilizer, a plastic-wood composite composition and a plastic-wood product, in order to solve the problems that when the existing plastic-wood composite is used outdoors and is irradiated by light for a long time, the existing plastic-wood composite is easily subjected to light aging, so that the problems of deformation, fracture, fading and the like are caused, and the use and the appearance are affected.

In one exemplary embodiment of the present application, there is provided a composite light stabilizer comprising: the ultraviolet light absorber and the hindered amine light stabilizer are used, and the mass ratio of the ultraviolet light absorber to the hindered amine light stabilizer is (10-80) to (60-10); wherein the ultraviolet light absorber is selected from any one or a mixture of at least two of 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, 2- (2 ' -hydroxy-5 ' -tert-octylphenyl) benzotriazole, 2- (2 ' -hydroxy-5-methylphenyl) benzotriazole, 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol or hexadecyl 3, 5-bis (1, 1-dimethylethyl) -4-hydroxybenzoate, and the hindered amine light stabilizer is selected from N, N ' -bis (2,2,6, polymers of 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine with the reaction product of 2,4, 6-trichloro-1, 3, 5-triazine and N-butyl-1-butylamine with N-butyl-2, 2,6, 6-tetramethyl-4-piperidylamine, poly (4-hydroxy-2, 2,6, 6-tetramethyl-1-piperidylethanol) succinate, poly- { [6- [ (1,1,3, 3-tetramethylbutyl) -imino ] -1,3, 5-triazine-2, 4-diyl ] [2- (2,2,6, 6-tetramethylpiperidyl) -amino ] -hexylene- [4- (2,2,6, 6-tetramethylpiperidyl) -imino ] }, or 2,2,6, 6-tetramethyl-4-piperidyl esterified compound, or a mixture of at least two thereof.

In this application, 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole is CAS No.3896-11-5, abbreviated as UV-326; 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole is CAS NO.3147-75-9, abbreviated as UV-329; 2- (2' -hydroxy-5-methylphenyl) benzotriazole is CAS NO.2440-22-4, abbreviated as UV-P; 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol is CAS NO.2725-22-6, abbreviated as UV-1164; 3, 5-bis (1, 1-dimethylethyl) -4-hydroxybenzoic acid hexadecyl ester is CAS NO.67845-93-6, abbreviated as UV-2908; poly succinic acid (4-hydroxy-2, 2,6, 6-tetramethyl-1-piperidineethanol) ester is CAS NO.65447-77-0, abbreviated as UV-622; poly- { [6- [ (1,1,3, 3-tetramethylbutyl) -imino ] -1,3, 5-triazine-2, 4-diyl ] [2- (2,2,6, 6-tetramethylpiperidinyl) -amino ] -hexylene- [4- (2,2,6, 6-tetramethylpiperidinyl) -imino ] } is CAS No.70624-18-9, abbreviated as UV-944; the polymer of the reaction product of N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine with 2,4, 6-trichloro-1, 3, 5-triazine and N-butyl-1-butylamine and N-butyl-2, 2,6, 6-tetramethyl-4-piperidylamine is CAS No.192268-64-7, abbreviated as UV-2020; the esterified 2,2,6, 6-tetramethyl-4-piperidyl is CAS NO.167078-06-0, abbreviated as UV-3853.

The composite light stabilizer provided by the application selects a specific ultraviolet absorber and a hindered amine light stabilizer to be compounded, is added into the plastic-wood composite material, can be cooperatively matched with a plastic base material, obviously improves the weather resistance of the plastic-wood composite material, and prolongs the service life of the plastic-wood composite material while keeping the appearance of the plastic-wood composite material.

Typically, but not by way of limitation, the composite light stabilizer provided herein has a mass ratio of the ultraviolet absorber to the hindered amine light stabilizer of, for example, 10:60, 20:60, 30:60, 40:50, 40:40, 40:30, 50:20, 50:30, 50:40, 60:10, 60:20, 60:30, 70:10, 70:20, or 80: 10.

In some embodiments of the present application, the UV absorber is selected from UV-1164 and/or UV-2908 and the hindered amine light stabilizer is selected from UV-2020 and/or UV-3853, for example, when the light composite stabilizer is a composition of any one of UV-1164 and UV-2020, a composition of UV-1164 and UV-3853, a composition of UV-2908 and UV-2020, or a composition of any one of UV2908 and UV-3853, or a composition of at least two of them, it has longer aging resistance and service life and better weather resistance when added into the wood-plastic composite.

In some embodiments of the application, the mass ratio of the ultraviolet absorber to the hindered amine light stabilizer is (40-50): 40-30, and the optical composite stabilizer formed by the ultraviolet absorber and the hindered amine light stabilizer which are matched with each other has a more significant synergistic effect with the plastic base material after being added into the plastic-wood composite material, so that the weather resistance of the plastic-wood composite material can be more effectively improved.

In some embodiments of the present application, the composite light stabilizer further comprises a light shielding agent, and the light shielding agent is cooperated with a specific kind of ultraviolet absorber and a specific kind of hindered amine light stabilizer, so that the weather resistance of the plastic-wood composite material is further improved, and the service life of the plastic-wood composite material is prolonged.

In some embodiments herein, the composite light stabilizer comprises, in mass percent: when the light shielding agent is 10-30%, the ultraviolet absorbent is 10-80% and the hindered amine light stabilizer is 10-60%, the light shielding agent, the ultraviolet absorbent and the hindered amine light stabilizer are matched with each other by specific mass, the formed composite light stabilizer is added into the plastic-wood composite material, the weather resistance of the plastic-wood composite material is improved more obviously, and particularly when the content of the light shielding agent is 10-30%, the content of the ultraviolet absorbent is 40-50% and the content of the hindered amine light stabilizer is 30-40%, the weather resistance of the plastic-wood composite material is particularly excellent and the service life is longer after the composite light stabilizer is added into the plastic-wood composite material.

Typically, but not by way of limitation, in the composite light stabilizers provided herein, the light-shielding agent is present in an amount of, for example, 10%, 15%, 20%, 25%, or 30%; the content of the ultraviolet absorber is, for example, 10%, 20%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 70% or 80%; the hindered amine light stabilizer is present in an amount of, for example, 10%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, or 60%.

In some embodiments of the present application, any agent capable of light-shielding can be used as the light-shielding agent, but for some plastic-wood composite materials with color requirements, a light-colored or white light-shielding agent, such as a combination of one or both of nano titanium dioxide and nano zinc oxide, is preferably used.

In one exemplary embodiment of the present application, a plastic wood composite composition is provided, comprising a plastic base, a biomass material, and a light stabilizer, the light stabilizer being the composite light stabilizer provided above.

In the application, the biomass material refers to a new material which is processed and manufactured by taking woody plants, gramineous plants, lianas, processing residues and wastes thereof as raw materials and adopting high-tech means such as physics, chemistry, biology and the like to have excellent performance and high added value.

The plastic-wood composite material composition provided by the application adopts mutual cooperation of the light stabilizer, the plastic base material and the biomass material, so that the prepared plastic-wood composite material has excellent illumination resistance, the weather resistance of the plastic-wood composite material can be obviously improved, and the service life of the plastic-wood composite material is prolonged.

In some embodiments of the present application, the mass ratio of the plastic base material to the light stabilizer is 100 (0.05-1.2), the prepared wood-plastic composite material has excellent weather resistance, and especially, the weather resistance of the prepared wood-plastic composite material is better when the mass ratio of the plastic base material to the light stabilizer is 100 (0.1-1).

Typically, but not by way of limitation, in the wood-plastic composite compositions provided herein, the mass ratio of the plastic binder to the light stabilizer is, for example, 100:0.05, 100:0.1, 100:0.2, 100:0.5, 100:0.8, 100:1, or 100: 1.2.

In some embodiments of the present application, any polymer that can be used to make plastics can be used as the plastic base, including, but not limited to, any one or a mixture of PE (polyethylene), PP (polypropylene), ASA (terpolymer of acrylonitrile, styrene, and acrylate rubber), EVA (ethylene-vinyl acetate copolymer), or ASA-PVC (ASA-polyvinyl chloride) copolymer. When the plastic base material is ASA, EVA or ASA-PVC, the prepared plastic-wood composite material has more excellent weather resistance.

The number average molecular weight of the plastic base materials is not limited as long as the plastic base materials can be used for preparing plastic wood products, for example, the number average molecular weight of PE can be in the range of 5-80 ten thousand, and the melt index (210 ℃/2.16kg) of PP can be in the range of 1-1.5g/10 min.

In some embodiments of the present application, any biomass material can be used as a raw material of the plastic-wood composite material, and especially when the biomass material is wood flour, bamboo dust, wheat straw, bran coat, peanut shell or cotton straw, the raw material source is wider and the cost is lower.

In some embodiments of the present application, the mass ratio of the plastic base material to the biomass material in the plastic-wood composite composition is 100: (5-20), the prepared plastic-wood composite material is beautiful and good in weather resistance, and particularly when the mass ratio of the plastic base material to the biomass material is 100: (8-12), the prepared plastic-wood composite material is more beautiful and has better weather resistance.

Typically, but not by way of limitation, the mass of the plastic base material to the biomass material is, for example, 100:5, 100:7:100:8, 100:9, 100:10, 100:11, 100:12, 100:15, 100:18, or 100: 20.

Of course, in the plastic-wood composite material composition, the mass ratio of the plastic base material to the biomass material may also be 100: (100-200), when the mass ratio of the plastic base material to the biomass material is 100: (100-200), the plastic-wood composite material composition can be used for a base material of non-co-extruded wood or a base material of a co-extruded wood-plastic core layer.

In some embodiments of the present application, the plastic-wood composite composition further includes an auxiliary agent, the type of the auxiliary agent is not limited, and any auxiliary agent capable of improving the performance of the plastic-wood composite material can be added to the plastic-wood composite composition as a raw material. The assistant contains a lubricant in view of processability, an antioxidant in view of antioxidant performance, and a toner in view of aesthetics.

The toner is not particularly limited and may be commercially available, for example, HIFIFAST YELLOW HF4G from Setarian Chemicals, Inc. of Anshan, N550 from Cambot, Cinilex DPP Red SR2P from CINIC, or AEROXIDE P25 from winning or developing companies.

In an exemplary embodiment of the present application, a plastic-wood product is provided, at least the exposed surface of the plastic-wood product comprises any one of the composite light stabilizers provided above, and the composite light stabilizer provided in the present application is used to prepare the exposed surface of the plastic-wood product, so that the weather resistance of the plastic-wood product can be effectively improved.

At present, the plastic-wood products mainly include two main types of co-extruded wood products and common plastic-wood products, and the co-extruded wood products are the biggest difference from the common plastic-wood products in that a layer of surface layer is added on the common plastic-wood products, so that the co-extruded wood products have more excellent stain resistance and mildew resistance, and the application scenes are wider.

The plastic-wood product provided by the application comprises a co-extruded wood product and a common plastic-wood product, when the plastic-wood product is the co-extruded wood product, the composite light stabilizer provided by the above is included in the skin layer of the plastic-wood product, and when the plastic-wood product is the common plastic-wood product (non co-extruded wood product), the composite light stabilizer provided by the above is integrally included.

The application provides a plastic-wood product, the at least exposed surface is prepared by the plastic-wood composite composition that the aforesaid provided for the application provides when the plastic-wood product is used for the open air for a long time, have excellent resistant light nature, and weatherability is good, has effectively prolonged life.

In some embodiments of the application, the plastic-wood product is a co-extruded wood product, and when the skin layer of the co-extruded wood product is prepared from the plastic-wood composite material composition, the weather resistance, stain resistance and mildew resistance of the plastic-wood product are all more excellent, and the requirements of various application scenarios can be better met.

The advantageous effects of the present application will be further described below with reference to examples and comparative examples.

In the following examples and comparative examples, "%" and "parts" are each abbreviated as "wt%". The performance indexes or the manufacturer numbers of the raw materials used in the examples and comparative examples are shown in Table 1 below, and raw materials not shown in Table 1 can be obtained by commercially available raw materials.

TABLE 1 raw material performance index or manufacturer model table

Example 1

This example provides a color chip for use as a skin layer in a co-extruded wood product, prepared as follows:

(1) premixing 100 parts of polyethylene, 10 parts of wood powder, 0.1 part of lubricant ethylene distearate, 1 part of toner and 0.5 part of light stabilizer to obtain a premix, wherein the light stabilizer consists of UV-329 and UV-944, the content of the UV-329 is 50%, and the content of the UV-944 is 50%;

(2) feeding the premix into a double-screw extruder, and carrying out melt mixing granulation under the condition that the temperature of a charging barrel is 200 ℃ to obtain plastic-wood raw material particles;

(3) and carrying out injection molding on the plastic-wood raw material particles to obtain the color chips with the thickness of 2 mm.

Example 2

The embodiment provides a color chip, the structural shape of which is the same as that of the color chip provided in embodiment 1, and the difference between the color chip and embodiment 1 is that a light stabilizer is composed of UV-329, UV-944 and nano zinc oxide, the content of UV-329 is 50%, the content of UV-944 is 40%, the content of nano zinc oxide is 10%, and the rest of the raw materials and the preparation method are the same as those in embodiment 1, and are not described herein again.

Example 3

This example provides a color chip, the structural shape of which is the same as that of the color chip provided in example 1, and the difference from example 1 is that EVA is used to replace polyethylene, and the rest of the raw materials and the preparation method are the same as those in example 1, and are not described herein again.

Example 4

The embodiment provides a color chip, the structural shape of which is the same as that of the color chip provided in embodiment 3, and the difference between the color chip and embodiment 3 is that a light stabilizer is composed of UV-329, UV-944 and nano zinc oxide, the content of UV-329 is 50%, the content of UV-944 is 40%, the content of nano zinc oxide is 10%, and the rest of the raw materials and the preparation method are the same as those in embodiment 3, and are not described herein again.

Example 5

The present embodiment provides a color chip, the structural shape of which is the same as that of the color chip provided in embodiment 1, and the difference from embodiment 1 is that a light stabilizer is composed of UV-P and UV-622, the content of UV-P is 50%, the content of UV-622 is 50%, and the rest of the raw materials and the preparation method are the same as those in embodiment 1, and are not repeated herein.

Example 6

The present embodiment provides a color chip, which has the same structural shape as the color chip provided in embodiment 5, and the difference from embodiment 5 is that a light stabilizer is composed of UV-P, UV-622 and nano zinc oxide, the content of UV-P is 50%, the content of UV-622 is 40%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those in embodiment 5, and are not repeated herein.

Example 7

The embodiment provides a color chip, the structural shape of which is the same as that of the color chip provided in embodiment 1, and the difference from embodiment 1 is that ASA is used to replace polyethylene, a light stabilizer is composed of UV-P and UV-622, the content of UV-P is 50%, the content of UV-622 is 50%, and the rest of the raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 8

The present embodiment provides a color chip, which has the same structural shape as the color chip provided in embodiment 7, and the difference from embodiment 7 is that a light stabilizer is composed of UV-P, UV-622 and nano zinc oxide, the content of UV-P is 50%, the content of UV-622 is 40%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those in embodiment 7, and are not repeated herein.

Example 9

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that the light stabilizer is composed of UV-326 and UV-622, the content of UV-326 is 58%, the content of UV-622 is 42%, and the rest of the raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 10

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 9, and the difference from embodiment 9 is that the light stabilizer is composed of UV-326, UV-622, and nano zinc oxide, the content of UV-326 is 40%, the content of UV-622 is 30%, the usage amount of nano zinc oxide is 30%, and the remaining raw materials and the preparation method thereof are the same as those of embodiment 9, and are not described herein again.

Example 11

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that ASA-PVC is used to replace polyethylene, the light stabilizer is composed of UV-326 and UV-622, the content of UV-326 is 58%, the content of UV-622 is 42%, and the rest of the raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 12

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 11, and the difference from embodiment 11 is that a light stabilizer is composed of UV-326, UV-622, and nano zinc oxide, the content of UV-326 is 40%, the content of UV-622 is 30%, the usage amount of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as those of embodiment 11, and are not described herein again.

Example 13

The embodiment provides a color chip, the structural shape of the color chip is the same as that of the embodiment 1, and the difference from the embodiment 1 is that the light stabilizer consists of UV-531 and UV-944, the content of the UV-531 is 60%, the content of the UV-944 is 40%, and the rest raw materials and the preparation method are the same as those of the embodiment 1, and are not repeated herein.

Example 14

The embodiment provides a color chip, the structural shape of which is the same as that of embodiment 13, and the difference from embodiment 13 is that a light stabilizer is composed of UV-531, UV-944 and nano zinc oxide, the content of UV-531 is 40%, the content of UV-944 is 40%, the usage amount of nano zinc oxide is 20%, and the rest raw materials and the preparation method are the same as those of embodiment 13, and are not described again here.

Example 15

The present embodiment provides a color chip, the structural shape of the color chip is the same as that of embodiment 1, and the difference from embodiment 1 is that the light stabilizer is composed of UV-1164 and UV-2020, the content of UV-1164 is 50%, the usage amount of UV-2020 is 50%, and the rest of the raw materials and the preparation method are the same as those in embodiment 1, and are not repeated herein.

Example 16

The present embodiment provides a color chip, the structural shape of which is the same as that in embodiment 15, and the difference from embodiment 15 is that a light stabilizer is composed of UV-1164, UV-2020, and nano zinc oxide, the content of UV-1164 is 40%, the usage amount of UV-2020 is 40%, the content of nano zinc oxide is 20%, and the remaining raw materials and the preparation method are the same as those in embodiment 15, and are not described herein again.

Example 17

The present embodiment provides a color chip, the structural shape of which is the same as that in embodiment 15, and the difference from embodiment 15 is that a light stabilizer is composed of UV-1164, UV-2020, and nano zinc oxide, the content of UV-1164 is 50%, the usage amount of UV-2020 is 30%, the content of nano zinc oxide is 20%, and the remaining raw materials and the preparation method are the same as those in embodiment 1, and are not described herein again.

Example 18

The present embodiment provides a color chip, the structural shape of which is the same as that in embodiment 15, and the difference from embodiment 15 is that a light stabilizer is composed of UV-1164, UV-2020, and nano zinc oxide, the content of UV-1164 is 50%, the amount of UV-2020 is 40%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those in embodiment 15, and are not described herein again.

Example 19

The present embodiment provides a color chip, the structural shape of which is the same as that in embodiment 15, and the difference from embodiment 15 is that a light stabilizer is composed of UV-1164, UV-2020, and nano zinc oxide, the content of UV-1164 is 80%, the amount of UV-2020 is 10%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those in embodiment 15, and are not described herein again.

Example 20

The present embodiment provides a color chip, the structural shape of which is the same as that in embodiment 15, and the difference from embodiment 15 is that a light stabilizer is composed of UV-1164, UV-2020, and nano zinc oxide, the content of UV-1164 is 10%, the usage amount of UV-2020 is 60%, the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as those in embodiment 15, and are not described herein again.

Example 21

This example provides a color chip, the structural shape of the color chip is the same as that in example 15, and the difference from example 15 is that the light stabilizer is composed of UV-1164, UV-2020, and nano titanium dioxide, and the content of UV-1164 is 40%, the amount of UV-2020 is 40%, and the content of nano titanium dioxide is 20%, and the remaining raw materials and the preparation method are the same as those in example 15, and are not described again.

Example 22

The embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that the light stabilizer consists of UV-2908 and UV-3853, the content of UV-2908 is 50%, the content of UV-3853 is 50%, and the rest raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 23

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 22, and the difference from embodiment 22 is that a light stabilizer is composed of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 40%, the content of UV-3853 is 30%, the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as those of embodiment 22, and are not described herein again.

Example 24

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 22, and the difference from embodiment 22 is that a light stabilizer is composed of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 40%, the content of UV-3853 is 40%, the content of nano zinc oxide is 20%, and the remaining raw materials and the preparation method are the same as those of embodiment 22, and are not described herein again.

Example 25

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 22, and the difference from embodiment 22 is that a light stabilizer is composed of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 50%, the content of UV-3853 is 40%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those of embodiment 22, and are not described herein again.

Example 26

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 22, and the difference from embodiment 22 is that a light stabilizer is composed of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 10%, the content of UV-3853 is 60%, the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as those of embodiment 22, and are not described herein again.

Example 27

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 22, and the difference from embodiment 22 is that a light stabilizer is composed of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 80%, the content of UV-3853 is 10%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those of embodiment 22, and are not described herein again.

Example 28

The embodiment provides a color chip, the structural shape of which is the same as that of embodiment 22, and the difference from embodiment 22 is that the light stabilizer is composed of UV-2908, UV-3853 and nano titanium dioxide, the content of UV-2908 is 40%, the content of UV-3853 is 30%, the content of nano titanium dioxide is 30%, and the rest of the raw materials and the preparation method are the same as those of embodiment 22, and are not repeated herein.

Example 29

The embodiment provides a color chip, the structural shape of the color chip is the same as that of embodiment 1, and the difference from embodiment 1 is that the light stabilizer consists of UV2908 and UV-2020, the content of UV-2908 is 55%, the dosage of UV-2020 is 45%, and the rest raw materials and the preparation method are the same as those of embodiment 1 and are not repeated herein.

Example 30

This example provides a color chip, the structural shape of which is the same as in example 29, and the difference from example 29 is that the light stabilizer is composed of UV-2908, UV-2020, and nano zinc oxide, and the content of UV-2908 is 50%, the content of UV-2020 is 40%, and the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as in example 29, and are not described again.

Example 31

This example provides a color chip, the structural shape of which is the same as in example 29, and the difference from example 29 is that the light stabilizer is composed of UV-2908, UV-2020, and nano zinc oxide, the content of UV-2908 is 40%, the content of UV-2020 is 30%, the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as in example 29, and are not described again here.

Example 32

This example provides a color chip, the structural shape of which is the same as in example 29, and the difference from example 29 is that the light stabilizer is composed of UV-2908, UV-2020, and nano zinc oxide, and the content of UV-2908 is 40%, the content of UV-2020 is 40%, and the content of nano zinc oxide is 20%, and the remaining raw materials and the preparation method are the same as in example 29, and are not described again.

Example 33

This example provides a color chip, the structural shape of which is the same as in example 29, and the difference from example 29 is that the light stabilizer is composed of UV-2908, UV-2020, and nano zinc oxide, and the content of UV-2908 is 10%, the content of UV-2020 is 60%, and the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as in example 29, and are not described again.

Example 34

This example provides a color chip, the structural shape of which is the same as in example 29, and the difference from example 29 is that the light stabilizer is composed of UV-2908, UV-2020, and nano zinc oxide, and the content of UV-2908 is 80%, the content of UV-2020 is 10%, and the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as in example 29, and are not described again.

Example 35

This example provides a color chip, the structural shape of which is the same as that in example 29, and the difference from example 29 is that the light stabilizer is composed of UV-2908, UV-2020, and nano titanium dioxide, and the content of UV-2908 is 40%, the content of UV-2020 is 40%, and the content of nano titanium dioxide is 20%, and the remaining raw materials and the preparation method are the same as those in example 29, and are not described again.

Example 36

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that the light stabilizer is composed of UV-1164 and UV-3853, the content of UV-1164 is 50%, the content of UV-3853 is 50%, and the rest of the raw materials and the preparation method are all embodiment 1, and are not described herein again.

Example 37

The present embodiment provides a color chip, which has the same structural shape as that of embodiment 36, and is different from embodiment 36 in that a light stabilizer is composed of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 40%, the content of UV-3853 is 40%, the content of nano zinc oxide is 20%, and the remaining raw materials and the preparation method are the same as those of embodiment 36, and are not described herein again.

Example 38

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 36, and the difference from embodiment 36 is that a light stabilizer is composed of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 50%, the content of UV-3853 is 40%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those of embodiment 36, and are not described herein again.

Example 39

The present embodiment provides a color chip, which has the same structural shape as that of embodiment 36, and is different from embodiment 36 in that a light stabilizer is composed of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 40%, the content of UV-3853 is 30%, the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as those of embodiment 36, and are not described herein again.

Example 40

The present embodiment provides a color chip, which has the same structural shape as that of embodiment 36, and is different from embodiment 36 in that a light stabilizer is composed of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 10%, the content of UV-3853 is 60%, the content of nano zinc oxide is 30%, and the remaining raw materials and the preparation method are the same as those of embodiment 36, and are not described herein again.

EXAMPLE 41

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 36, and the difference from embodiment 36 is that a light stabilizer is composed of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 80%, the content of UV-3853 is 10%, the content of nano zinc oxide is 10%, and the remaining raw materials and the preparation method are the same as those of embodiment 36, and are not described herein again.

Example 42

The present embodiment provides a color chip, which has the same structural shape as that of embodiment 36, and is different from embodiment 36 in that a light stabilizer is composed of UV-1164, UV-3853 and nano titanium dioxide, the content of UV-1164 is 40%, the content of UV-3853 is 40%, the content of nano titanium dioxide is 20%, and the remaining raw materials and the preparation method are the same as those of embodiment 36, and are not repeated herein.

Example 43

The embodiment provides a color chip, the structural shape of the color chip is the same as that of embodiment 1, and the difference from embodiment 1 is that a light stabilizer consists of UV-329, UV-2020 and nano zinc oxide, the content of UV-329 is 40%, the content of UV-2020 is 40%, the content of nano zinc oxide is 20%, and the rest raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 44

The embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that a light stabilizer consists of UV-2908, UV-944 and nano zinc oxide, the content of UV-2908 is 40%, the content of UV-944 is 40%, the content of nano zinc oxide is 20%, and the rest raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 45

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that a light stabilizer is composed of UV-326, UV-3853 and nano zinc oxide, the content of UV-326 is 40%, the content of UV-3853 is 40%, the content of nano zinc oxide is 20%, and the remaining raw materials and the preparation method are the same as those of embodiment 1, and are not described herein again.

Example 46

The embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that a light stabilizer consists of UV-P, UV-2020 and nano zinc oxide, the content of UV-P is 40%, the content of UV-2020 is 40%, the content of nano zinc oxide is 20%, and the rest of the raw materials and the preparation method are the same as those of embodiment 1, and are not repeated herein.

Example 47

The embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that polypropylene is used to replace polyethylene, and the light stabilizer is composed of UV-1164, UV-2020 and nano zinc oxide, the content of UV-1164 is 40%, the content of UV-2020 is 40%, the content of nano zinc oxide is 20%, and the rest of the raw materials and the preparation method are the same as those of embodiment 1, and are not described again.

Example 48

This example provides a color chip, the structural shape of which is the same as that in example 47, and the difference from example 47 is that EVA is used to replace polyethylene, the EVA is the same batch as that in example 3, and the remaining raw materials and the preparation method are the same as those in example 47, and are not described again here.

Example 49

This example provides a color chip, which has the same structural shape as that of example 47, and differs from example 47 in that ASA is used instead of polyethylene, and ASA is the same batch as ASA in example 7, and the remaining raw materials and the preparation method are the same as those of example 47, which are not described again here.

Example 50

The present embodiment provides a color chip, which has the same structural shape as that of embodiment 47, and is different from embodiment 47 in that ASA-PVC is used to replace polyethylene, and other raw materials and the preparation method are the same as those of embodiment 47, and are not described herein again.

Example 51

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that polypropylene is used to replace polyethylene, and the light stabilizer is composed of UV-1164, UV-3853 and nano zinc oxide, and the content of UV-1164 is 40%, the content of UV-3853 is 40%, and the content of nano zinc oxide is 20%, the polypropylene and the polypropylene in embodiment 45 are in the same batch, and the remaining raw materials and the preparation method are the same as those in embodiment 1, and are not described again.

Example 52

This example provides a color chip, the structural shape of which is the same as that in example 51, and the difference from example 51 is that EVA is used to replace polyethylene, the EVA is the same batch as that in example 3, and the remaining raw materials and the preparation method are the same as those in example 51, and are not described again here.

Example 53

This embodiment provides a color chip, which has the same structural shape as that of embodiment 51, and is different from embodiment 51 in that ASA is used instead of polyethylene, and ASA is the same batch as ASA in embodiment 7, and other raw materials and preparation methods are the same as those of embodiment 51, and are not described again here.

Example 54

This embodiment provides a color chip, the structural shape of which is the same as that in embodiment 51, and the difference from embodiment 1 is that ASA-PVC is used instead of polyethylene, the ASA-PVC is the same batch as that in embodiment 51, and the remaining raw materials and the preparation method are the same as those in embodiment 51, and are not described herein again.

Example 55

This embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that polypropylene is used to replace polyethylene, and the light stabilizer is composed of UV-2908, UV-3853 and nano zinc oxide, and the content of UV-2908 is 40%, the content of UV-3853 is 40%, and the content of nano zinc oxide is 20%, the polypropylene and the polypropylene in embodiment 45 are in the same batch, and the remaining raw materials and the preparation method are the same as those in embodiment 1, and are not described again.

Example 56

This example provides a color chip, the structural shape of which is the same as that in example 55, and the difference from example 55 is that EVA is used to replace polyethylene, the EVA is the same batch as that in example 3, and the remaining raw materials and the preparation method are the same as those in example 55, and are not described again here.

Example 57

This embodiment provides a color chip, the structural shape of which is the same as that in embodiment 55, and the difference from embodiment 55 is that ASA is used instead of polyethylene, and ASA is the same batch as ASA in embodiment 7, and the remaining raw materials and the preparation method are the same as those in embodiment 55, and are not described again here.

Example 58

This embodiment provides a color chip, the structural shape of which is the same as that in embodiment 55, and the difference from embodiment 55 is that ASA-PVC is used instead of polyethylene, the ASA-PVC is the same batch as that in embodiment 48, and the remaining raw materials and the preparation method are the same as those in embodiment 55, and are not described again here.

Example 59

The present embodiment provides a color chip, the structural shape of which is the same as that of embodiment 1, and the difference from embodiment 1 is that polypropylene is used to replace polyethylene, and the light stabilizer is composed of UV-2908, UV-2020 and nano zinc oxide, and the content of UV-2908 is 40%, the content of UV-2020 is 40%, and the content of nano zinc oxide is 20%, the polypropylene and the polypropylene in embodiment 45 are in the same batch, and the remaining raw materials and the preparation method are the same as those in embodiment 1, and are not described again.

Example 60

This example provides a color chip, the structural shape of which is the same as that in example 59, and the difference from example 59 is that EVA is used to replace polyethylene, the EVA is the same batch as that in example 3, and the remaining raw materials and the preparation method are the same as those in example 59, and are not described again here.

Example 61

This example provides a color chip, the structural shape of which is the same as that in example 59, and the difference from example 59 is that ASA is used instead of polyethylene, and ASA is the same batch as ASA in example 7, and the remaining raw materials and the preparation method are the same as those in example 59, and are not described again here.

Example 62

This example provides a color chip, the structural shape of which is the same as that in example 59, and the difference from example 59 is that ASA-PVC is used instead of polyethylene, the ASA-PVC is the same batch as that in example 48, and the remaining raw materials and the preparation method are the same as those in example 59, and are not described again here.

Comparative example 1

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of the example 1, the difference between the color chip and the example 1 is that the light stabilizer is UV-1164, and the rest of the raw materials and the preparation method are the same as those of the example 1, and the details are not repeated.

Comparative example 2

This comparative example provides a color chip, the structure and shape of which are the same as those of example 1, and the difference from example 1 is that the light stabilizer is UV-2908, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not described again.

Comparative example 3

This comparative example provides a color chip, the structure and shape of which are the same as those of example 1, and the difference from example 1 is that the light stabilizer is UV-3853, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not described again.

Comparative example 4

This comparative example provides a color chip, the structure and shape of which are the same as those of example 1, and the difference from example 1 is that the light stabilizer is UV-2020, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not described again here.

Comparative example 5

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-1164 and nano zinc oxide, the content of UV-1164 is 70%, the content of nano zinc oxide is 30%, and the rest raw materials and the preparation method are the same as those of example 1 and are not repeated.

Comparative example 6

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-2908 and nano zinc oxide, the content of UV-2908 is 70%, the content of nano zinc oxide is 30%, and the rest raw materials and the preparation method are the same as those of example 1 and are not repeated.

Comparative example 7

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-3853 and nano zinc oxide, the content of UV-3853 is 70%, the content of nano zinc oxide is 30%, and the rest raw materials and the preparation method are the same as those of example 1 and are not repeated herein.

Comparative example 8

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-2020 and nano zinc oxide, the content of the UV-2020 is 70%, the content of the nano zinc oxide is 30%, and the rest of the raw materials and the preparation method are the same as those of example 1 and are not repeated.

Comparative example 9

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-1164, UV-2020 and nano zinc oxide, the content of UV-1164 is 5%, the content of UV-2020 is 70%, the content of nano zinc oxide is 25%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 10

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-1164, UV-2020 and nano zinc oxide, the content of UV-1164 is 90%, the content of UV-2020 is 5%, the content of nano zinc oxide is 5%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 11

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 5%, the content of UV-3853 is 80%, the content of nano zinc oxide is 15%, and the rest raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 12

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-1164, UV-3853 and nano zinc oxide, the content of UV-1164 is 85%, the content of UV-2020 is 5%, the content of nano zinc oxide is 10%, and the rest raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 13

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-2908, UV-2020 and nano zinc oxide, the content of UV-2908 is 5%, the content of UV-2020 is 85%, the content of nano zinc oxide is 10%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 14

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-2908, UV-2020 and nano zinc oxide, the content of UV-2908 is 80%, the content of UV-2020 is 5%, the content of nano zinc oxide is 15%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 15

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 10%, the content of UV-2020 is 85%, the content of nano zinc oxide is 5%, and the rest raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 16

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-2908, UV-3853 and nano zinc oxide, the content of UV-2908 is 70%, the content of UV-3853 is 5%, the content of nano zinc oxide is 25%, and the rest raw materials and the preparation method are the same as those of example 1, and are not repeated.

Comparative example 17

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-327, UV-622 and nano zinc oxide, the content of UV-327 is 40%, the content of UV-622 is 40%, the content of nano zinc oxide is 20%, and the rest raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 18

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-328, UV-622 and nano zinc oxide, the content of UV-328 is 40%, the content of UV-622 is 40%, the content of nano zinc oxide is 20%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 19

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-531, UV-622 and nano zinc oxide, the content of the UV-531 is 40%, the content of the UV-622 is 40%, the content of the nano zinc oxide is 20%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Comparative example 20

The comparative example provides a color chip, the structure and the shape of the color chip are the same as those of example 1, and the difference from example 1 is that the light stabilizer consists of UV-326, UV-770 and nano zinc oxide, the content of UV-326 is 40%, the content of UV-770 is 40%, the content of nano zinc oxide is 20%, and the rest of the raw materials and the preparation method are the same as those of example 1, and are not repeated herein.

Test examples

The color chips provided in the examples and comparative examples were subjected to aging resistance tests under the following conditions: the xenon lamp is adopted for accelerated photo-aging, and the irradiance broadband is (300-400 nm)60 +/-2 w/m²The blackboard temperature is 63 +/-3 ℃, the test box temperature is 38 +/-3 ℃, and the relative humidity is 50 +/-10%; spraying for 18 minutes, wherein the irradiance wide band is (300-400 nm)60 +/-2 w/m²The color difference of weather resistance was measured for 1000h, 2000h, 3000h, 4000h, 5000h and 6000h, respectively, and the results are shown in table 1 below.

TABLE 1 color difference data table of different weather resisting time of color film

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the ultraviolet absorbent and the hindered amine light stabilizer of a specific kind are selected for compounding and added into the plastic-wood composite material, and the ultraviolet absorbent and the hindered amine light stabilizer can be cooperatively matched with the plastic base material, so that the weather resistance of the plastic-wood composite material is obviously improved, the attractiveness of the plastic-wood composite material is kept, and the service life of the plastic-wood composite material is prolonged.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite light stabilizer, characterized in that the composite light stabilizer comprises: the ultraviolet light absorber and the hindered amine light stabilizer are used, and the mass ratio of the ultraviolet light absorber to the hindered amine light stabilizer is (10-80) to (60-10);

2. The composite light stabilizer according to claim 1, characterized in that the UV absorber is selected from the group consisting of the 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol and/or the hexadecyl 3, 5-bis (1, 1-dimethylethyl) -4-hydroxybenzoate; the hindered amine light stabilizer is selected from the group consisting of polymers of the reaction product of said N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine with 2,4, 6-trichloro-1, 3, 5-triazine and N-butyl-1-butylamine and N-butyl-2, 2,6, 6-tetramethyl-4-piperidyl amine, and/or said 2,2,6, 6-tetramethyl-4-piperidyl esters;

preferably, the mass ratio of the ultraviolet absorber to the hindered amine light stabilizer is (40-50): 40-30.

3. The composite light stabilizer according to claim 1 or 2, characterized in that the composite light stabilizer further comprises a light-shielding agent.

4. The composite light stabilizer according to claim 3, characterized in that the composite light stabilizer comprises, in mass percent: 10-30% of the light shielding agent, 10-80% of the ultraviolet absorbent and 10-60% of the hindered amine light stabilizer;

preferably, the composite light stabilizer comprises: 10-30% of the light shielding agent, 40-50% of the ultraviolet absorbent and 30-40% of the hindered amine light stabilizer.

5. The composite light stabilizer according to claim 3 or 4, characterized in that the light-shielding agent comprises nanoscale zinc oxide and/or nanoscale titanium dioxide.

6. A plastic wood composite composition comprising a plastic base material, a biomass material and a light stabilizer, characterized in that the light stabilizer is the composite light stabilizer of any one of claims 1 to 5;

preferably, the mass ratio of the plastic base material to the light stabilizer is 100 (0.05-1.2), preferably 100:

(0.1-1)；

preferably, the mass ratio of the plastic base material to the biomass material is 100: (5-20), preferably 100:

(8-12)。

7. a wood-plastic composite composition according to claim 6, wherein the plastic binder comprises at least one of PE, PP, ASA, EVA or ASA-PVC copolymer;

preferably, the biomass material comprises at least one of wood flour, bamboo dust, wheat straw, rice bran, peanut hulls, or cotton straw.

8. The wood-plastic composite composition according to claim 6 or 7, further comprising an auxiliary agent, the auxiliary agent comprising at least one of a lubricant, an antioxidant, or a pigment.

9. A wood-plastic product, characterized in that at least the exposed surface of the wood-plastic product comprises the composite light stabilizer of any one of claims 1 to 5.

10. A wood-plastic product according to claim 9, wherein the wood-plastic product is a co-extruded wood product comprising a skin layer prepared from the wood-plastic composite composition according to any one of claims 6 to 8.