CN116622147A - Weather-resistant master batch UV-3864MB and application thereof in PE wood-plastic panel surface layer material - Google Patents

Weather-resistant master batch UV-3864MB and application thereof in PE wood-plastic panel surface layer material Download PDF

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CN116622147A
CN116622147A CN202310674807.2A CN202310674807A CN116622147A CN 116622147 A CN116622147 A CN 116622147A CN 202310674807 A CN202310674807 A CN 202310674807A CN 116622147 A CN116622147 A CN 116622147A
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weather
master batch
wood
resistant master
plastic panel
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王明虎
李青
王志龙
李昊桦
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Guangdong Bangying New Material Co ltd
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Guangdong Bangying New Material Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2397/00—Characterised by the use of lignin-containing materials
    • C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/134—Phenols containing ester groups
    • C08K5/1345—Carboxylic esters of phenolcarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
    • C08K5/3432—Six-membered rings
    • C08K5/3435—Piperidines
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3472—Five-membered rings
    • C08K5/3475—Five-membered rings condensed with carbocyclic rings
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/527—Cyclic esters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract

The invention belongs to the field of polymer material processing aids, and discloses weather-resistant master batch UV-3864MB and application thereof in PE wood-plastic panel surface layer materials. The weather-resistant master batch UV-3864MB comprises the following components in percentage by mass: triazine ultraviolet absorbers: 1% -5%; benzotriazole ultraviolet absorber: 1% -5%; light stabilizer UV-3853:5% -15%; light stabilizer UV-2908:5% -15%; hindered phenols primary antioxidant: 1% -3%; phosphite ester auxiliary antioxidant: 1% -3%; HDPE resin: 70% -85%. The formula of the invention mainly considers the adverse effect of UVB wave band in sunlight on the weather resistance of PE wood plastic panel surface material, and the formula is close to neutral and completely different from the conventional alkaline formula in the wood plastic panel industry, thereby improving the degree of freedom of the formula design of PE wood plastic panel surface material and having wide application prospect in related industries such as wood plastic panels and the like.

Description

Weather-resistant master batch UV-3864MB and application thereof in PE wood-plastic panel surface layer material
Technical Field
The invention belongs to the field of polymer material processing aids, and particularly relates to weather-resistant master batch UV-3864MB and application thereof in PE wood-plastic panel surface layer materials.
Background
The wood-plastic board is a high-tech green environment-friendly novel decorative material which is mainly prepared by taking wood (wood cellulose and plant cellulose) as a base material, thermoplastic polymer materials (plastics), processing aids and the like, uniformly mixing the materials, and then heating and extruding the materials through die equipment, has the performances and characteristics of the wood and the plastics, and is a novel composite material capable of replacing the wood and the plastics. The wood-plastic composite material originates in North America, and is increasingly applied to various aspects such as automobile interior materials, real estate industry, public facilities and the like in recent years along with the great progress and rapid development of new material development technology and processing technology, so that the wood-plastic composite material is a novel composite material with great heat in markets at home and abroad in recent years. Because the plastic-wood composite material contains plastic and plant fiber, the plastic-wood composite material has wood-like processing performance, is obviously superior to wood and other synthetic materials in mechanical performance, nail holding power, durability and the like, has strong plasticity, can be recycled and reproduced and the like, and has wide market application space. The wood-plastic composite material also relieves the problem of shortage of natural resources such as wood to a certain extent, and has great significance for protecting forest resources.
The wood-plastic panel is usually produced in a multi-layer co-extrusion mode, wherein the middle is a core layer, and the two sides are surface layers. Generally, the core layer is not required to resist aging. In contrast, when the surface layer material is exposed to sunlight, ultraviolet rays are likely to cause photo-aging, and the problems of discoloration, cracking, chalking and the like caused by light irradiation, high temperature or atmospheric pollutants are unavoidable. Therefore, the addition of an antioxidant and an anti-photoaging additive to the plastic-wood material has become a necessary option for solving the problems.
The first generation of surface layer plastic wood products in the wood-plastic industry has lower technical requirements, has lower service life requirements on wood-plastic boards, and many practitioners in the plastic-wood board industry often do not add anti-aging auxiliary agents or only add a small amount of light stabilizer for reducing the cost. However, with the increasing requirements of the wood-plastic panel industry, well-known enterprises such as American, green, national wind and the like in the industry can put higher weather-proof requirements on plastic-wood products under the flags, and often put requirements on the service life of the wood-plastic panel to be more than 10 years or even more than decades. Therefore, the development of a new generation of weather-resistant master batch with stronger applicability is a very significant matter.
Aiming at the ageing resistance problem of the wood-plastic plate industry, from the analysis of related data such as published papers, published patents, industry conferences and the like, the main technical thought is to add a certain ultraviolet absorbent and a light stabilizer into a skin material to solve the ageing resistance problem of the wood-plastic plate in an outdoor use environment, but the action mechanism of the ultraviolet absorbent and the light stabilizer in the ageing resistance process of the wood-plastic plate is not deeply researched in the current industry, so that the ageing resistance formula design of the existing wood-plastic plate industry is blind, the ageing resistance efficiency is low, the production cost is high, and the market application of ageing resistance master batches in the wood-plastic plate industry is not facilitated.
Patent CN111231469a discloses a method for preparing a PE wood-plastic panel, which is provided with a certain anti-aging property by adding a certain amount of ultraviolet absorber and light stabilizer, but the example of the patent mentions that the ultraviolet absorber is UV-531, the light stabilizer is UV-944, and the selection of the two weather-resistant auxiliary agents has some defects in practice. Firstly, the UV-944 is strong in alkalinity, and can react with certain weak acid components in the PE wood-plastic board formula to cause gradual failure of the light stabilizer. Secondly, the UV-531 UV absorber is more suitable for use in PVC wood-plastic panels than the UV absorber, and for PE wood-plastic panels, the criteria for finding the most suitable UV absorber is that the absorption band of the UV absorber is closer to that of HDPE, and it is known in the literature that the band of the PE material most sensitive to UV in sunlight is 300-340nm, which includes both UVA and UVB bands. Patent CN107933028A discloses a formulation of a PE double-layer co-extruded facing material, which also gives a problem of ageing to a wood-plastic panel by adding an ultraviolet absorbent, and the formulation has a defect larger than that of patent CN111231469a because only the ultraviolet absorbent lacks a light stabilizer in the formulation of patent CN107933028A, and the ultraviolet absorbent is known to be an auxiliary agent with small molecular weight, and after years, the weather-proof performance of the PE wood-plastic panel facing layer is greatly reduced due to precipitation, and then the PE molecular weight is broken due to sunlight irradiation, and the ageing of the PE wood-plastic panel facing layer cannot be prevented due to free radical capture by the light stabilizer.
In our earlier patent CN114479247a, the aging resistance of the PE wood-plastic panel is improved by the synergistic effect of the reinforcing agent TAIC with specific ultraviolet absorber and light stabilizer, but the formulation combination thereof has room for further optimization and improvement. In particular, how to achieve better anti-aging performance and suitability for wider application scenes through the synergistic effect of a specific ultraviolet absorber, a light stabilizer and an antioxidant without adding a specific reinforcing agent is a target pursued by a person skilled in the art.
Disclosure of Invention
In view of the above drawbacks and shortcomings of the prior art, a primary object of the present invention is to provide a weather resistant masterbatch, UV-3864MB.
The invention also aims to provide a preparation method of the weather-resistant master batch UV-3864MB.
The invention also aims to provide the application of the weather-resistant master batch UV-3864MB in PE wood-plastic panel surface laminates.
The invention provides a basic neutral anti-aging technical solution, improves the anti-aging performance of the PE wood-plastic plate in an outdoor application scene, and expands the application range of the PE wood-plastic plate.
The invention aims at realizing the following technical scheme:
the weather-resistant master batch UV-3864MB comprises the following components in percentage by mass:
further, the triazine ultraviolet absorbent is one or more of ultraviolet absorbent UV-479, ultraviolet absorbent UV-1577 and ultraviolet absorbent UV-1164, and the triazine ultraviolet absorbent has better absorption to UVA and UVB wave bands (280-320 nm) of ultraviolet rays in sunlight, and can effectively endow polyolefin materials with excellent outdoor weather resistance.
Further, the benzotriazole ultraviolet absorber is one or more of ultraviolet absorber UV-326, ultraviolet absorber UV-328 and ultraviolet absorber UV-5411, is a common high-performance ultraviolet absorber in the market, has good absorption performance to UVA wave bands in ultraviolet rays in sunlight, and can endow polyolefin materials with excellent outdoor weather resistance.
The light stabilizer UV-3853 is a novel efficient hindered amine light stabilizer, has the chemical name of 2, 6-tetramethyl-4-piperidyl stearate, is suitable for most polymer high molecular materials, especially polyolefin high molecular materials and products, and can also be used as a light stabilizer in polyacetal, polyamide, styrene, TPO and other polymer materials.
The light stabilizer UV-2908 is a hindered benzoate light stabilizer and a high-efficiency ultraviolet-resistant free radical capturing agent, has the chemical name of 3, 5-di-tert-butyl-4-hydroxybenzoic acid n-hexadecyl ester, and has the advantages of gas-smoke fading resistance, low alkalinity, low volatility, low colorability, good chemical stability, acid resistance and alkali resistance. Has wide application prospect in polyolefin products, flat wires, round wires, plates, pipes and other fields.
Further, the hindered phenol main antioxidant is one or more of an antioxidant 1010, an antioxidant 1076 and an antioxidant 245, and has the main functions of preventing the thermal oxidation aging of the master batch caused by the high-temperature processing environment in the processing process and the problem of air-fumigation yellowing in the storage and use processes of the master batch.
Further, the phosphite ester auxiliary antioxidant is one or more of an antioxidant 168 and an antioxidant 626, and has the main effects of enhancing the processing stability of the polymer material in the processing process of the master batch and providing color retention.
Further, the HDPE resin is a luxuriant and petrochemical 5502 which is used as a carrier of UV-3864MB master batch.
The preparation method of the weather-resistant master batch UV-3864MB comprises the following preparation steps:
and (3) stirring and mixing all raw material components except the light stabilizer UV-3853, adding the raw material components into a hopper of a double-screw extruder, adding the light stabilizer UV-3853 through a liquid oil pump, extruding and granulating through the double-screw extruder, screening, and magnetically separating to obtain the weather-resistant master batch UV-3864MB.
Further, the stirring and mixing means stirring in a high-speed mixer at a stirring speed of 600-800 rpm for 2-10 min under normal temperature conditions.
Further, the conditions for extrusion granulation by the twin-screw extruder are as follows: the temperature of the rear section of the charging barrel of the extruder is set to be 200-240 ℃, the temperature of the middle section of the charging barrel of the extruder is set to be 190-230 ℃, the temperature of the front section of the charging barrel of the extruder is set to be 180-210 ℃, and the strip obtained by extrusion of the double-screw extruder is cooled by tap water at normal temperature, dried by hot air and pelletized.
Further, the screening refers to that the obtained particles pass through a vibrating screen to be screened to obtain finished products with the particle diameter of 0.1-0.3 mm and the length of 0.5-0.7 mm, and the particles with other sizes are recycled; the magnetic separation means that the obtained particles with qualified size are passed through a magnetic separator to remove disqualified particles containing trace metals.
The application of the weather-resistant master batch UV-3864MB in PE wood-plastic panel surface layer material comprises the following steps: the weather-resistant master batch UV-3864MB is added into the production process of the PE wood-plastic panel surface layer material according to the addition amount of 3-5% by mass percent.
Compared with the prior art, the invention has the beneficial effects that:
(1) The raw materials of the weather-resistant master batch formula are basically neutral, so that the formula of the weather-resistant master batch has higher freedom of formula design in the subsequent improvement process.
(2) The invention firstly provides the adverse effect of UVB wave band in ultraviolet on the weather resistance of PE wood plastic panel surface material, and the weather resistance effect of the whole formula can be improved by combining specific ultraviolet absorbers in the formula.
(3) Light stabilizers UV-3853 and UV-2908 are introduced into the wood-plastic board industry as weather-proof technical solutions for the first time in the wood-plastic industry, and a new direction is provided for weather-proof technical solutions of subsequent wood-plastic industries.
(4) The invention has low cost and excellent weather-proof effect, is a weather-proof product with high cost performance and wide market prospect, and is applied to PE wood-plastic panel surface layer materials.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Example 1
The weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material comprises the following components in percentage by mass:
the weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material is prepared by the following method:
(1) The components of the light-removing agent UV-3853 are mixed and stirred in a high-speed mixer for 2-10 min at a stirring speed of 600-800 rpm under the condition of 25 ℃.
(2) After the light stabilizer UV-3853 is heated to be liquid, adding the liquid into a double-screw extruder through a liquid oil filling pump, granulating, setting the temperature of the rear section of a charging barrel of the extruder to be 200-240 ℃, setting the temperature of the middle section of the charging barrel of the extruder to be 190-230 ℃, setting the temperature of the front section of the charging barrel of the extruder to be 180-210 ℃, cooling the strip obtained by extrusion of the double-screw extruder by tap water at normal temperature, drying by hot air, and granulating.
(3) The obtained particles pass through a vibrating screen, the diameter of the particles is 0.1-0.3 mm, the length of the particles is 0.5-0.7 mm, and the particles with other sizes are recycled.
(4) And (3) passing the qualified-sized particles obtained in the step (3) through a magnetic separator to remove the unqualified particles containing trace metals, thereby obtaining weather-resistant master batch UV-3864MB applied to PE wood-plastic panel surface layer materials.
Example 2
The weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material comprises the following components in percentage by mass:
the weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material is prepared by the following method:
(1) The components of the light-removing agent UV-3853 are mixed and stirred in a high-speed mixer for 2-10 min at a stirring speed of 600-800 rpm under the condition of 25 ℃.
(2) After the light stabilizer UV-3853 is heated to be liquid, adding the liquid into a double-screw extruder through a liquid oil filling pump, granulating, setting the temperature of the rear section of a charging barrel of the extruder to be 200-240 ℃, setting the temperature of the middle section of the charging barrel of the extruder to be 190-230 ℃, setting the temperature of the front section of the charging barrel of the extruder to be 180-210 ℃, cooling the strip obtained by extrusion of the double-screw extruder by tap water at normal temperature, drying by hot air, and granulating.
(3) The obtained particles pass through a vibrating screen, the diameter of the particles is 0.1-0.3 mm, the length of the particles is 0.5-0.7 mm, and the particles with other sizes are recycled;
(4) And (3) passing the qualified-sized particles obtained in the step (3) through a magnetic separator to remove the unqualified particles containing trace metals, thereby obtaining weather-resistant master batch UV-3864MB applied to PE wood-plastic panel surface layer materials.
Example 3
The weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material comprises the following components in percentage by mass:
the weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material is prepared by the following method:
(1) The components of the light-removing agent UV-3853 are mixed and stirred in a high-speed mixer for 2-10 min at a stirring speed of 600-800 rpm under the condition of 25 ℃.
(2) After the light stabilizer UV-3853 is heated to be liquid, adding the liquid into a double-screw extruder through a liquid oil filling pump, granulating, setting the temperature of the rear section of a charging barrel of the extruder to be 200-240 ℃, setting the temperature of the middle section of the charging barrel of the extruder to be 190-230 ℃, setting the temperature of the front section of the charging barrel of the extruder to be 180-210 ℃, cooling the strip obtained by extrusion of the double-screw extruder by tap water at normal temperature, drying by hot air, and granulating.
(3) The obtained particles pass through a vibrating screen, the diameter of the particles is 0.1-0.3 mm, the length of the particles is 0.5-0.7 mm, and the particles with other sizes are recycled.
(4) And (3) passing the qualified-sized particles obtained in the step (3) through a magnetic separator to remove the unqualified particles containing trace metals, thereby obtaining weather-resistant master batch UV-3864MB applied to PE wood-plastic panel surface layer materials.
Comparative example 1
The comparative example simulates a weather-resistant formula of a certain Huadong known functional master batch company, and comprises the following components in percentage by mass:
the weather-resistant master batch of the comparative example is prepared by the following method:
(1) The components are fully mixed and stirred in a high-speed mixer for 2 to 10 minutes at the stirring speed of 600 to 800rpm under the condition of the temperature of 25 ℃. Then the mixture enters a double-screw extruder for granulation, the temperature of the rear section of a charging barrel of the extruder is set to be 200-240 ℃, the temperature of the middle section of the charging barrel of the extruder is set to be 190-230 ℃, the temperature of the front section of the charging barrel of the extruder is set to be 180-210 ℃, and the strip obtained by extrusion of the double-screw extruder is cooled by running water at normal temperature, dried by hot air and granulated.
(2) The obtained particles pass through a vibrating screen, the diameter of the particles is 0.1-0.3 mm, the length of the particles is 0.5-0.7 mm, and the particles with other sizes are recycled.
(3) And (3) passing the qualified-sized particles obtained in the step (2) through a magnetic separator to remove the unqualified particles containing trace metals, thereby obtaining the weather-resistant master batch of the comparative example applied to PE wood-plastic panel surface layer materials.
Comparative example 2
The comparative example simulates a weather-resistant formula of a functional master batch company of a certain known name in south China, and comprises the following components in percentage by mass:
the weather-resistant master batch of the comparative example is prepared by the following method:
(1) The components are fully mixed and stirred in a high-speed mixer for 2 to 10 minutes at the stirring speed of 600 to 800rpm under the condition of the temperature of 25 ℃. Then the mixture enters a double-screw extruder for granulation, the temperature of the rear section of a charging barrel of the extruder is set to be 200-240 ℃, the temperature of the middle section of the charging barrel of the extruder is set to be 190-230 ℃, the temperature of the front section of the charging barrel of the extruder is set to be 180-210 ℃, and the strip obtained by extrusion of the double-screw extruder is cooled by running water at normal temperature, dried by hot air and granulated.
(2) The obtained particles pass through a vibrating screen, the diameter of the particles is 0.1-0.3 mm, the length of the particles is 0.5-0.7 mm, and the particles with other sizes are recycled;
(3) And (3) passing the qualified-sized particles obtained in the step (2) through a magnetic separator to remove the unqualified particles containing trace metals, thereby obtaining the weather-resistant master batch of the comparative example applied to PE wood-plastic panel surface layer materials.
The weather-resistant master batch for PE wood-plastic panel surface layer materials prepared in the examples and the comparative examples is added into the wood-plastic panel surface layer materials according to the addition amount of 4% to extrude a finished product, and the color is standard iron red. The blank is a finished product directly extruded without adding any weather-proof master batch in the direct wood-plastic panel surface layer material, and the color is the same as the standard iron red. Then, for all wood-plastic board samples, the color difference value test is carried out after 2000 hours according to the xenon lamp aging condition in the manual accelerated aging test suggested by the national standard GB/T24508-2020 of the wood-plastic board industry, and the result is shown in the following table 1:
TABLE 1
From the above results, it can be seen that: the weather-resistant master batch UV-3864MB applied to the PE wood-plastic panel surface layer material has better ageing resistance than similar products in the market, and is mainly characterized in that the selection of an ultraviolet absorber (the ultraviolet absorber needs to have better absorption on UVA and UVB wave bands of ultraviolet rays in sunlight) and the matched use of the ultraviolet absorber and specific light stabilizers UV-3853 and UV-2908 are very critical. The weathering effect of the invention cannot be achieved in comparative example 1 by the combination of different light stabilizers UV-944 and comparative example 2 by the combination of different UV absorbers UV-531 and light stabilizers UV-944. The weather-resistant master batch is simple to prepare and add, low in cost and capable of being widely applied to outdoor application scenes of PE wood-plastic boards.
To further demonstrate the synergistic interaction of the UV absorbers and light stabilizers according to the invention, the following comparative examples were set up:
comparative example 3
In this comparative example, the amounts of the ultraviolet absorbers UV-1164 and UV-326 were adjusted to 3.5% and 10.5%, respectively, as compared with example 1, without adding the light stabilizers UV-3853 and UV-2908.
Comparative example 4
In this comparative example, the amounts of light stabilizers UV-3853 and UV-2908 were adjusted to 7% and 7%, respectively, in comparison with example 1, without adding UV absorbers UV-1164 and UV-326.
The results of the xenon lamp aging test of the weather-resistant master batches obtained in comparative examples 3 and 4 applied to PE wood-plastic panel laminates are shown in the following table 2:
TABLE 2
As can be seen from the results in Table 2, the weather-resistant effect of the present invention could not be achieved by adding only the ultraviolet absorber of the present invention and adding only the light stabilizer of the present invention in combination with the antioxidant under the same addition amount. The specific ultraviolet absorber and the light stabilizer have good synergistic effect.
To further demonstrate the effect of the combination of uv absorbers of the present invention on the weathering effect of the overall formulation, the following comparative examples were set up: comparative example 5
In this comparative example, the amount of ultraviolet absorber UV-326 was adjusted to 4% as compared with example 1 without adding ultraviolet absorber UV-1164.
Comparative example 6
In this comparative example, the amount of ultraviolet absorber UV-1164 was adjusted to 4% as compared with example 1 without adding ultraviolet absorber UV-326.
The results of the xenon lamp aging test of the weather-resistant master batches obtained in comparative examples 5 and 6 applied to PE wood-plastic panel laminates are shown in the following table 3:
TABLE 3 Table 3
As can be seen from the results of Table 3 in comparison with the results of example 1, the present invention can improve the weathering effect of the overall formulation by employing a combination of specific UV absorbers that absorb both the UVA and UVB bands of the UV light in sunlight.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims (10)

1. The weather-resistant master batch UV-3864MB is characterized by comprising the following components in percentage by mass:
2. the weather-resistant master batch UV-3864MB according to claim 1, wherein the triazine ultraviolet absorbent is one or more of ultraviolet absorbent UV-479, ultraviolet absorbent UV-1577 and ultraviolet absorbent UV-1164.
3. The weather-resistant master batch UV-3864MB according to claim 1, wherein the benzotriazole ultraviolet absorber is one or more of ultraviolet absorber UV-326, ultraviolet absorber UV-328 and ultraviolet absorber UV-5411.
4. The weather-resistant master batch UV-3864MB according to claim 1, wherein the hindered phenol primary antioxidant is one or more of an antioxidant 1010, an antioxidant 1076 and an antioxidant 245.
5. The weather-resistant master batch UV-3864MB according to claim 1, wherein the phosphite ester auxiliary antioxidant is one or more of an antioxidant 168 and an antioxidant 626.
6. The weatherable masterbatch UV-3864MB according to claim 1, wherein said HDPE resin is a bushed 5502.
7. The method for preparing the weather-resistant master batch UV-3864MB according to any one of claims 1 to 6, comprising the following preparation steps:
and (3) stirring and mixing all raw material components except the light stabilizer UV-3853, adding the raw material components into a hopper of a double-screw extruder, adding the light stabilizer UV-3853 through a liquid oil pump, extruding and granulating through the double-screw extruder, screening, and magnetically separating to obtain the weather-resistant master batch UV-3864MB.
8. The method for preparing weather-resistant master batch UV-3864MB according to claim 7, wherein the stirring and mixing are performed in a high-speed mixer at a stirring speed of 600-800 rpm for 2-10 min under normal temperature conditions; the conditions of extrusion granulation of the double-screw extruder are as follows: the temperature of the rear section of the charging barrel of the extruder is set to be 200-240 ℃, the temperature of the middle section of the charging barrel of the extruder is set to be 190-230 ℃, the temperature of the front section of the charging barrel of the extruder is set to be 180-210 ℃, and the strip obtained by extrusion of the double-screw extruder is cooled by tap water at normal temperature, dried by hot air and pelletized.
9. The method for preparing weather-resistant master batch UV-3864MB according to claim 7, wherein the screening is to screen the obtained particles with the diameter of 0.1-0.3 mm and the length of 0.5-0.7 mm by a vibrating screen to obtain finished products, and recycling the particles with other sizes; the magnetic separation means that the obtained particles with qualified size are passed through a magnetic separator to remove disqualified particles containing trace metals.
10. The application of the weather-resistant master batch UV-3864MB in PE wood-plastic panel surface layer materials according to any one of claims 1 to 6, which is characterized in that the application method is as follows: the weather-resistant master batch UV-3864MB is added into the production process of the PE wood-plastic panel surface layer material according to the addition amount of 3-5% by mass percent.
CN202310674807.2A 2023-06-08 2023-06-08 Weather-resistant master batch UV-3864MB and application thereof in PE wood-plastic panel surface layer material Pending CN116622147A (en)

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