CN113462079A - Light stabilizer 3853 master batch capable of preventing precipitation and blooming and preparation method thereof - Google Patents
Light stabilizer 3853 master batch capable of preventing precipitation and blooming and preparation method thereof Download PDFInfo
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- CN113462079A CN113462079A CN202110842750.3A CN202110842750A CN113462079A CN 113462079 A CN113462079 A CN 113462079A CN 202110842750 A CN202110842750 A CN 202110842750A CN 113462079 A CN113462079 A CN 113462079A
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- 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
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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
- 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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- 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
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- 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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Abstract
The invention belongs to the technical field of polymer material processing aids, and discloses a light stabilizer 3853 master batch capable of preventing precipitation and blooming and a preparation method thereof. The light stabilizer 3853 master batch comprises the following components in percentage by mass: light stabilizer 3853: 40% -50%; PP resin: 30% -50%; polypropylene wax: 2% -10%; polyethylene wax: 2% -10%; main antioxidant: 0.1 to 0.5 percent; auxiliary antioxidant: 0.1 to 0.2 percent. The 3853 master batch prepared by the invention can effectively avoid the problem that the conventional 3853PP5 master batch is easy to separate out to cause agglomeration, has continuity in production and high production efficiency, does not need to be transported by a cold vehicle, has good light aging resistant effect, is suitable for most polymers including PP products, TPO and the like, and can also be applied to products such as polyacetal, polyamide, styrene polymers, PUR and the like.
Description
Technical Field
The invention belongs to the technical field of polymer material processing aids, and particularly relates to a light stabilizer 3853 master batch capable of preventing precipitation and blooming and a preparation method thereof.
Background
In the case of outdoor exposure to sunlight, a series of complex phenomena occur due to the absorption of ultraviolet light, a process often referred to as photoaging, which is essentially the result of various physical and chemical changes occurring in the polymer chains. Photo-aging tends to cause various phenomena such as discoloration of the appearance, cracking of the surface, and deterioration of mechanical and electrical properties of the polymer material. Photo-aging is one of the important causes of aging phenomena in the application process of polymer materials. The light stabilizer is added in the polymerization and processing process of the high polymer material, so that the light aging of the high polymer material caused by ultraviolet irradiation can be effectively slowed down.
The light stabilizer UV-3853 is a novel hindered amine light stabilizer, the chemical name of which is 2,2,6, 6-tetramethyl-4-piperidine stearate, and the novel hindered amine light stabilizer is mainly applied to polyolefin plastics, polyurethane, ABS resin, coating, adhesive, rubber and the like, and has the advantages of excellent light stabilization effect, high efficiency, low toxicity and the like. Compared with other low-molecular-weight hindered amine light stabilizers, the light stabilizer 3853 has good compatibility with PP/PE materials in PP/PE products for automobiles, and the phenomena of precipitation and blooming are reduced. The light stabilizer 3853 has good synergistic effect when used together with other ultraviolet absorbers and hindered amine light stabilizers.
The light stabilizer UV-3853 has a low melting point, which is only about 28 ℃. In general, the light stabilizer UV-3853 is a white waxy solid during the colder winter season. In the summer with higher temperature, the light stabilizer UV-3853 turns into oily liquid with slightly yellow color. The light stabilizer UV-3853 has a low melting point and a high viscosity, which brings certain difficulties to the addition and processing in the polymer processing process, so the light stabilizer UV-3853 is generally used in the actual production process, and the end customer requires the addition in the form of master batch. 3853PP5 (or 3803PP5) sold in the market is an anti-aging master batch product prepared by taking PP as a carrier and adding about 50% of light stabilizer 3853, but most companies are difficult to solve the problem of precipitation of the low-melting-point light stabilizer 3853, so that the 3853PP5 produced by the companies is easy to agglomerate in the process of storage and transportation, and the normal use of the product is seriously influenced.
Aiming at the technical problems of 3853PP5 master batches, the main solution ideas of the anti-aging additive industry at present are as follows: (1) the coating performance of the PP carrier on the light stabilizer 3853 is improved by using other processing aids such as foaming agents and adsorbents, so that the aim of improving the precipitation of the light stabilizer 3853 is fulfilled; (2) foamed polypropylene is used as a carrier, and 3853 liquid is absorbed by the foamed polypropylene, so that the aim of improving the precipitation of the light stabilizer 3853 is fulfilled.
Patent CN 110041616 a discloses a masterbatch of anti-precipitation light stabilizer 3853 and a preparation method thereof, which effectively improves the precipitation problem of light stabilizer 3853 by adding a certain amount of adsorbent and foaming agent, but may have some adverse effects on the processing of polymer materials due to the introduction of a certain proportion of adsorbent and foaming agent. Patent CN 105647010a discloses a preparation method of an anti-blocking polypropylene-based light stabilizer masterbatch, which uses foamed polypropylene as a carrier, physically mixes the foamed polypropylene with a light stabilizer 3853 by a mechanical stirring manner, and absorbs liquid 3853 through the foamed polypropylene to prepare a light stabilizer masterbatch product. The method has the advantages of high production cost, low production efficiency, high requirement on the processing technology and no cost advantage. Patent CN 106633416 a discloses an antioxidant masterbatch, which uses ethylene/polar monomer copolymer with specific content as the blending matrix resin of polypropylene, and greatly improves the compatibility of polypropylene with heat stabilizer and light stabilizer, thereby ensuring that the heat stabilizer and light stabilizer are firmly bound in the matrix resin without precipitation, and the antioxidant masterbatch prepared has excellent antioxidant weather resistance and precipitation resistance. However, the ethylene/polar monomer copolymer has limited compatibility with polypropylene, may adversely affect the processability of the material, and is costly. Patent CN 104530558A discloses a modified light stabilizer masterbatch made of a second polypropylene resin, a light stabilizer, an alkaline compound and a heat stabilizer. However, the technical purpose of the patent is mainly to improve the weather resistance of the material and prevent the pulverization, and the problem of agglomeration caused by the precipitation and the blooming of the light stabilizer cannot be solved.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention mainly aims to provide the light stabilizer 3853 master batch capable of preventing precipitation and blooming. The anti-precipitation and anti-blooming light stabilizer 3853 master batch can be transported at normal temperature in the process of storage and transportation, is not easy to agglomerate, does not add a complex processing aid system, and has stable performance, lower cost and convenient use.
The invention also aims to provide a preparation method of the anti-precipitation and anti-blooming light stabilizer 3853 master batch.
The purpose of the invention is realized by the following technical scheme:
the light stabilizer 3853 master batch for preventing precipitation and blooming comprises the following components in percentage by mass:
the light stabilizer 3853 is a novel efficient hindered amine light stabilizer, the chemical name of which is 2,2,6, 6-tetramethyl-4-piperidine stearate, and the light stabilizer is suitable for most polymer materials, especially polyolefin polymer materials and products, and can also be used as a light stabilizer in polymer materials such as polyacetal, polyamide, styrene, TPO and the like.
Further, the PP resin is conventional homopolymerized PP resin, and the PP resin provided by the invention is used as a carrier of 3853 master batches.
Further, the polypropylene wax is a low crystalline metallocene polypropylene wax. The method is mainly applied to: dispersant, pigment and carrier of additive mother particles, lubricant suitable for plastics and hot-melt adhesive. But is rarely disclosed as being resistant to precipitation and blooming by light stabilizer 3853.
Further, the polyethylene wax is a conventional low density polyethylene wax. The method is mainly applied to: dispersant, pigment and carrier of additive mother particles, lubricant suitable for plastics and hot-melt adhesive. But is rarely disclosed as being resistant to precipitation and blooming by light stabilizer 3853.
Further, the main antioxidant is one or more of antioxidant 1790, antioxidant 245, antioxidant 1076 and antioxidant 1010, and the main function of the antioxidant is to prevent the master batch from thermal-oxidative aging caused by a high-temperature processing environment in the processing process.
Further, the auxiliary antioxidant is one or more of antioxidant 168, antioxidant 626 and antioxidant PEP-Q, and the main functions of the auxiliary antioxidant are to enhance the processing stability of the high molecular material in the master batch processing process and provide color retention.
The preparation method of the anti-precipitation and anti-blooming light stabilizer 3853 master batch comprises the following preparation steps:
the raw material components except the light stabilizer 3853 are stirred and mixed, and then are added into a hopper of a double-screw extruder, the light stabilizer 3853 is added through a liquid oiling pump, and is extruded and granulated through the double-screw extruder, and the light stabilizer 3853 master batch for preventing precipitation and blooming is obtained through screening and magnetic separation.
Further, the stirring and mixing means stirring at a stirring speed of 700rpm for 3min in a high speed mixer under normal temperature conditions.
Further, the conditions of extrusion granulation of the twin-screw extruder are as follows: the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, and strips obtained by extrusion of the double-screw extruder are cooled by tap water at normal temperature and are cut into granules after being dried by hot air.
Further, the screening and magnetic separation conditions are as follows: screening finished products with the particle diameter of 0.3-0.5mm and the length of 0.5-1mm by using the obtained particles through a vibrating screen, and recycling the particles with other sizes; the obtained particles with qualified size pass through a magnetic separator, unqualified particles containing trace metals are removed, and the light stabilizer 3853 master batch for preventing precipitation and blooming is obtained.
Compared with the prior art, the invention has the beneficial effects that:
the anti-precipitation and anti-frosting light stabilizer 3853 master batch has the advantages of simple and easy processing technology and low cost, can effectively solve the problems of adhesion, frosting and the like easily caused in the storage and transportation processes of 3853PP5 master batches, can be transported at normal temperature without adopting a cold vehicle for transportation like certain similar products, thereby causing the transportation cost to be greatly increased, the types of the processing aids added into the anti-precipitation and anti-frosting light stabilizer 3853 master batches are simple, the problem that the processing aids are complex and can bring uncertainty to the processing of high polymer materials is avoided, and the anti-precipitation and anti-frosting light stabilizer 3853 master batches are widely applied to the light aging resistance of most polymer high polymer materials.
Drawings
FIG. 1 is a diagram of a commercial light stabilizer 3853PP5 sample after baking in a forced air convection oven at 50 ℃ for 72 hours.
FIG. 2 is a diagram showing the state of a master batch sample of the light stabilizer 3853 for preventing precipitation and blooming, which is produced in example 4 of the present invention, after being baked in a forced air convection oven at 50 ℃ for 72 hours.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto. The raw materials used in the examples are all commercially available products.
Example 1
The anti-precipitation and anti-blooming light stabilizer 3853 master batch of the embodiment comprises the following components in percentage by mass:
the anti-precipitation and anti-blooming light stabilizer 3853 master batch is prepared by the following method:
(1) the components except the light stabilizer 3853 were mixed and stirred in a high-speed mixer at a stirring speed of 700rpm for 3 minutes at a temperature of 25 ℃.
(2) After the light stabilizer 3853 is heated to be in a liquid state, the liquid is added through a liquid oiling pump and enters a double-screw extruder to be granulated, the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, strips obtained by extrusion through the double-screw extruder are cooled through tap water at normal temperature, and the strips are cut into granules after being dried through hot air.
(3) Sieving the obtained granules with a vibrating screen to obtain finished products with the diameter of 0.3-0.5mm and the length of 0.5-1mm, and recycling the granules with other sizes.
(4) And (4) passing the particles with qualified sizes obtained in the step (3) through a magnetic separator, removing unqualified particles containing trace metals, and obtaining the light stabilizer 3853 master batch for preventing precipitation and blooming.
Example 2
The anti-precipitation and anti-blooming light stabilizer 3853 master batch comprises the following components in percentage by mass:
the anti-precipitation and anti-blooming light stabilizer 3853 master batch is prepared by the following method:
(1) the components except the light stabilizer 3853 were mixed and stirred in a high-speed mixer at a stirring speed of 700rpm for 3 minutes at a temperature of 25 ℃.
(2) After the light stabilizer 3853 is heated to be in a liquid state, the liquid is added through a liquid oiling pump and enters a double-screw extruder to be granulated, the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, strips obtained by extrusion through the double-screw extruder are cooled through tap water at normal temperature, and the strips are cut into granules after being dried through hot air.
(3) Sieving the obtained granules with a vibrating screen to obtain finished products with the diameter of 0.3-0.5mm and the length of 0.5-1mm, and recycling the granules with other sizes.
(4) And (4) passing the particles with qualified sizes obtained in the step (3) through a magnetic separator, removing unqualified particles containing trace metals, and obtaining the light stabilizer 3853 master batch for preventing precipitation and blooming.
Example 3
The anti-precipitation and anti-blooming light stabilizer 3853 master batch comprises the following components in percentage by mass:
the anti-precipitation and anti-blooming light stabilizer 3853 master batch is prepared by the following method:
(1) the components except the light stabilizer 3853 were mixed and stirred in a high-speed mixer at a stirring speed of 700rpm for 3 minutes at a temperature of 25 ℃.
(2) After the light stabilizer 3853 is heated to be in a liquid state, the liquid is added through a liquid oiling pump and enters a double-screw extruder to be granulated, the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, strips obtained by extrusion through the double-screw extruder are cooled through tap water at normal temperature, and the strips are cut into granules after being dried through hot air.
(3) Sieving the obtained granules through a vibrating screen to obtain finished products with the diameter of 0.3-0.5mm and the length of 0.5-1mm, and recycling the granules with other sizes;
(4) and (4) passing the particles with qualified sizes obtained in the step (3) through a magnetic separator, removing unqualified particles containing trace metals, and obtaining the light stabilizer 3853 master batch for preventing precipitation and blooming.
Example 4
The anti-precipitation and anti-blooming light stabilizer 3853 master batch comprises the following components in percentage by mass:
the anti-precipitation and anti-blooming light stabilizer 3853 master batch is prepared by the following method:
(1) the components except the light stabilizer 3853 were mixed and stirred in a high-speed mixer at a stirring speed of 700rpm for 3 minutes at a temperature of 25 ℃.
(2) After the light stabilizer 3853 is heated to be in a liquid state, the liquid is added through a liquid oiling pump and enters a double-screw extruder to be granulated, the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, strips obtained by extrusion through the double-screw extruder are cooled through tap water at normal temperature, and the strips are cut into granules after being dried through hot air.
(3) Sieving the obtained granules with a vibrating screen to obtain finished products with the diameter of 0.3-0.5mm and the length of 0.5-1mm, and recycling the granules with other sizes.
(4) And (4) passing the particles with qualified sizes obtained in the step (3) through a magnetic separator, removing unqualified particles containing trace metals, and obtaining the light stabilizer 3853 master batch for preventing precipitation and blooming.
Example 5
The anti-precipitation and anti-blooming light stabilizer 3853 master batch comprises the following components in percentage by mass:
the anti-precipitation and anti-blooming light stabilizer 3853 master batch is prepared by the following method:
(1) the components except the light stabilizer 3853 were mixed and stirred in a high-speed mixer at a stirring speed of 700rpm for 3 minutes at a temperature of 25 ℃.
(2) After the light stabilizer 3853 is heated to be in a liquid state, the liquid is added through a liquid oiling pump and enters a double-screw extruder to be granulated, the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, strips obtained by extrusion through the double-screw extruder are cooled through tap water at normal temperature, and the strips are cut into granules after being dried through hot air.
(3) Sieving the obtained granules with a vibrating screen to obtain finished products with the diameter of 0.3-0.5mm and the length of 0.5-1mm, and recycling the granules with other sizes.
(4) And (4) passing the particles with qualified sizes obtained in the step (3) through a magnetic separator, removing unqualified particles containing trace metals, and obtaining the light stabilizer 3853 master batch for preventing precipitation and blooming.
The master batch of the light stabilizer 3853 for preventing precipitation and blooming, which is prepared in the above example, is put 50g of a sample in an open beaker, the beaker is sealed by a round piece with a diameter slightly larger than that of the beaker, the round piece is baked in a forced air convection oven at 50 ℃, and then a performance test is performed, and the results are shown in the following table 1:
TABLE 1
The state diagrams of the commercial light stabilizer 3853PP5 sample and the anti-precipitation and anti-blooming light stabilizer 3853 master batch sample produced in example 4 after being placed in a forced air convection oven at 50 ℃ and baked for 72 hours are shown in FIG. 1 and FIG. 2, respectively.
From the above results, it can be seen that: the anti-precipitation and anti-frosting light stabilizer 3853 master batch is good in anti-precipitation performance, and is baked in a forced air convection oven at the temperature of 50 ℃ for 72 hours, and the master batch is taken out without any adhesion, precipitation or frosting phenomenon. The preparation and addition operations of the master batch are simple, the cost is low, and the master batch can be widely applied to industrial production.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The light stabilizer 3853 master batch for preventing precipitation and blooming is characterized by comprising the following components in percentage by mass:
2. the masterbatch of claim 1, wherein the PP resin is a homopolymer PP resin.
3. The masterbatch of claim 1, wherein the polypropylene wax is a low crystalline metallocene polypropylene wax.
4. The masterbatch of claim 1, wherein the polyethylene wax is a low density polyethylene wax.
5. The anti-precipitation and anti-blooming light stabilizer 3853 master batch according to claim 1, wherein the main antioxidant is one or more of antioxidant 1790, antioxidant 245, antioxidant 1076 and antioxidant 1010.
6. The anti-precipitation and anti-blooming light stabilizer 3853 master batch according to claim 1, wherein the auxiliary antioxidant is one or more of antioxidant 168, antioxidant 626 and antioxidant PEP-Q.
7. The preparation method of the anti-precipitation and anti-blooming light stabilizer 3853 master batch as claimed in any one of claims 1 to 6, wherein the preparation method comprises the following steps:
the raw material components except the light stabilizer 3853 are stirred and mixed, and then are added into a hopper of a double-screw extruder, the light stabilizer 3853 is added through a liquid oiling pump, and is extruded and granulated through the double-screw extruder, and the light stabilizer 3853 master batch for preventing precipitation and blooming is obtained through screening and magnetic separation.
8. The method for preparing the anti-precipitation and anti-blooming light stabilizer 3853 masterbatch according to claim 7, wherein the stirring and mixing is performed in a high speed mixer at a stirring speed of 700rpm for 3min under normal temperature conditions.
9. The preparation method of the anti-precipitation and anti-blooming light stabilizer 3853 master batch according to claim 7, wherein the extrusion granulation conditions of the twin-screw extruder are as follows: the temperature of the rear section of a material cylinder of the extruder is set to be 210-230 ℃, the temperature of the middle section of the material cylinder of the extruder is set to be 190-200 ℃, the temperature of the front section of the material cylinder of the extruder is set to be 170-190 ℃, and strips obtained by extrusion of the double-screw extruder are cooled by tap water at normal temperature and are cut into granules after being dried by hot air.
10. The method for preparing the anti-precipitation and anti-blooming light stabilizer 3853 masterbatch according to claim 7, wherein the screening and magnetic separation conditions are as follows: screening finished products with the particle diameter of 0.3-0.5mm and the length of 0.5-1mm by using the obtained particles through a vibrating screen, and recycling the particles with other sizes; the obtained particles with qualified size pass through a magnetic separator, unqualified particles containing trace metals are removed, and the light stabilizer 3853 master batch for preventing precipitation and blooming is obtained.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539677A (en) * | 2021-12-31 | 2022-05-27 | 安徽星贝达新材料科技有限公司 | Light stabilizer composite material and preparation method thereof |
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| CN111205545A (en) * | 2020-03-20 | 2020-05-29 | 宿迁联盛科技股份有限公司 | Method for preventing auxiliary agent in polyethylene aging-resistant master batch from being separated out |
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| CN114539677A (en) * | 2021-12-31 | 2022-05-27 | 安徽星贝达新材料科技有限公司 | Light stabilizer composite material and preparation method thereof |
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