CN111793280A - Modified polypropylene with low temperature resistance and high toughness and preparation method thereof - Google Patents
Modified polypropylene with low temperature resistance and high toughness and preparation method thereof Download PDFInfo
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- CN111793280A CN111793280A CN202010801061.3A CN202010801061A CN111793280A CN 111793280 A CN111793280 A CN 111793280A CN 202010801061 A CN202010801061 A CN 202010801061A CN 111793280 A CN111793280 A CN 111793280A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a modified polypropylene with low temperature resistance and high toughness and a preparation method thereof, belonging to the technical field of polypropylene improvement, wherein the polypropylene comprises the following raw materials of, by weight, 80-120 parts of polypropylene, 50-70 parts of block copolymer, 15-30 parts of toughening agent, 12-22 parts of grafted polypropylene, 10-28 parts of antioxidant, 8-12 parts of lubricant and 5-10 parts of glass fiber, and finally the low temperature resistance of the polypropylene can be improved, the polypropylene is prevented from being broken at low temperature, the use range of the polypropylene is improved, and the service life of the polypropylene is prolonged.
Description
Technical Field
The invention relates to the technical field of polypropylene improvement, in particular to modified polypropylene with low temperature resistance and high toughness and a preparation method thereof.
Background
Polypropylene is a polymer obtained by addition polymerization of propylene. Is white wax-like material, and has transparent and light appearance. The density is 0.89-0.91 g/cm3, 1 is inflammable, the melting point is 165 ℃, the softening is carried out at about 155 ℃, and the using temperature is-30-140 ℃ 2. Can resist corrosion of acid, alkali, salt solution and various organic solvents at the temperature of below 80 ℃, and can be decomposed at high temperature and under the action of oxidation. The polypropylene is widely applied to the production of fiber products such as clothes, blankets and the like, medical instruments, automobiles, bicycles, parts, conveying pipelines, chemical containers and the like, and is also used for packaging foods and medicines.
The plastic pallet is a plastic pallet which is formed by one-time injection molding with international logistics rails, and gradually replaces a wood pallet or a steel pallet used by a forklift, and compared with the steel pallet and the wood pallet, the plastic pallet has the advantages of light weight, flatness, attractiveness, long service life, good integrity, no nail, no thorn, no odor, no toxicity, acid resistance, alkali resistance, corrosion resistance, easiness in washing and disinfection, no corrosion, no combustion supporting, no static spark, skid resistance, recoverability and the like, and the service life of the plastic pallet is about 10 times of that of the wood pallet. However, it is not suitable for use in a low temperature environment, and is liable to break, which affects the use.
Summary of the invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide modified polypropylene with low temperature resistance and high toughness and a preparation method thereof, which can improve the low temperature resistance of polypropylene, prevent the polypropylene from being broken at low temperature, improve the use range of the polypropylene and prolong the service life of the polypropylene.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
the modified polypropylene with low temperature resistance and high toughness comprises, by weight, 80-120 parts of polypropylene, 50-70 parts of block copolymer, 15-30 parts of toughening agent, 12-22 parts of grafted polypropylene, 10-28 parts of antioxidant, 8-12 parts of lubricant and 5-10 parts of glass fiber, and can improve the low temperature resistance of polypropylene, prevent the polypropylene from breaking at low temperature, improve the use range of polypropylene and prolong the service life of polypropylene.
In a preferred embodiment of the present invention, the block copolymer is a hydrogenated styrene-butadiene block copolymer.
As a preferred scheme of the invention, the toughening agent is prepared by mixing one or more of raw materials of carboxyl nitrile rubber, liquid nitrile rubber, polyvinyl butyral, polyether sulfone and polyphenylene ether ketone according to any proportion.
In a preferable scheme of the invention, the glass fiber is prepared by mixing one or more parts of raw materials of chopped glass fiber and continuous glass fiber in any proportion.
In a preferred embodiment of the present invention, the antioxidant is one or more of zinc dialkyl dithiophosphate and zinc dialkyl dithiocarbamate, which are mixed according to any proportion.
In a preferable scheme of the invention, the lubricant is prepared by mixing one or more of molybdenum disulfide, polytetrafluoroethylene, boron nitride and graphite fluoride according to any proportion.
As a preferred scheme of the invention, 81-119 parts of polypropylene, 51-69 parts of block copolymer, 16-29 parts of toughening agent, 13-21 parts of grafted polypropylene, 11-27 parts of antioxidant, 9-11 parts of lubricant and 6-9 parts of glass fiber.
As a preferred scheme of the invention, the polypropylene composite material comprises 100 parts of polypropylene, 60 parts of block copolymer, 22.5 parts of toughening agent, 17 parts of grafted polypropylene, 19 parts of antioxidant, 10 parts of lubricant and 7.5 parts of glass fiber.
As a preferable scheme of the invention, the preparation method of the modified polypropylene with low temperature resistance and high toughness performance comprises the following steps:
s1: sampling according to the parts by weight, namely sampling according to the parts by weight, adding the polypropylene, the block copolymer, the toughening agent, the grafted polypropylene, the antioxidant and the lubricant into a stirring pot for mixing, and stirring at the speed of 830r/min-950r/min for 20min-60min to obtain a first component for later use;
s2: sampling according to the weight part, adding the first component into a double-screw extruder, and extruding in the environment with the temperature of 235-250 ℃ and the vacuum degree of 0.04-0.08 MPa to obtain a second component for later use;
s3: sampling according to the weight parts, adding the glass fiber and the second component into a stirring pot, mixing, and stirring at the speed of 900r/min-1100r/min for 40min-110min to obtain a third component for later use;
s4: sampling according to the weight parts, adding the third component into cold water with the temperature of 5-12 ℃ for cooling for 0.5-1.5 min, and granulating the cooled third component in a cutter machine.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the toughening agent and the glass fiber are arranged in the scheme, and the toughness and the strength of the material can be effectively improved by mixing the toughening agent and the glass fiber.
(2) The lubricant is arranged in the scheme, and can improve the flowability of the polypropylene material, thereby being beneficial to processing and forming.
(3) The grafted polypropylene is arranged in the scheme, and the grafted polypropylene can effectively improve the compatibility of the material and effectively reserve the performance of the material.
(4) The scheme is provided with the antioxidant, and the antioxidant is beneficial to delaying the long-time use and oxidation of the material, so that the service life of the material is prolonged.
Drawings
FIG. 1 is a flow chart of a modified polypropylene with low temperature resistance and high toughness property and a preparation method thereof.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
the modified polypropylene with low temperature resistance and high toughness provided in this embodiment 1 comprises, by weight, 80 parts of polypropylene, 50 parts of a block copolymer, 15 parts of a toughening agent, 12 parts of grafted polypropylene, 10 parts of an antioxidant, 8 parts of a lubricant, and 5 parts of glass fiber.
In the embodiment, the toughening agent and the glass fiber are mixed for use, so that the toughness and the strength of the material can be effectively improved, the lubricant can improve the fluidity of the polypropylene material, the processing and the forming are facilitated, the compatibility of the material can be effectively improved by the grafted polypropylene, the antioxidant can be effectively reserved for the performance of the material, the long-term use and the oxidation of the material can be delayed, and the service life of the material is prolonged.
Specifically, the block copolymer is a hydrogenated styrene-butadiene block copolymer.
Specifically, the toughening agent is prepared by mixing one or more of carboxyl nitrile rubber, liquid nitrile rubber, polyvinyl butyral, polyether sulfone and polyphenylene ether ketone according to any proportion.
Specifically, the glass fiber is prepared by mixing one or more parts of raw materials of chopped glass fiber and continuous glass fiber according to any proportion.
Specifically, the antioxidant is prepared by mixing one or more of zinc dialkyl dithiophosphate and zinc dialkyl dithiocarbamate according to any proportion.
Specifically, the lubricant is prepared by mixing one or more of molybdenum disulfide, polytetrafluoroethylene, boron nitride and graphite fluoride according to any proportion
A preparation method of modified polypropylene with low temperature resistance and high toughness performance comprises the following steps:
s1: sampling according to the parts by weight, namely sampling according to the parts by weight, adding the polypropylene, the block copolymer, the toughening agent, the grafted polypropylene, the antioxidant and the lubricant into a stirring pot for mixing, and stirring at the speed of 830r/min-950r/min for 20min-60min to obtain a first component for later use;
s2: sampling according to the weight part, adding the first component into a double-screw extruder, and extruding in the environment with the temperature of 235-250 ℃ and the vacuum degree of 0.04-0.08 MPa to obtain a second component for later use;
s3: sampling according to the weight parts, adding the glass fiber and the second component into a stirring pot, mixing, and stirring at the speed of 900r/min-1100r/min for 40min-110min to obtain a third component for later use;
s4: sampling according to the weight parts, adding the third component into cold water with the temperature of 5-12 ℃ for cooling for 0.5-1.5 min, and granulating the cooled third component in a cutter machine.
Example 2:
the modified polypropylene with low temperature resistance and high toughness provided in this embodiment 2 comprises, by weight, 120 parts of polypropylene, 70 parts of a block copolymer, 30 parts of a toughening agent, 22 parts of grafted polypropylene, 28 parts of an antioxidant, 12 parts of a lubricant, and 10 parts of glass fiber.
The preparation process of example 2 is the same as in example 1 and will not be described here.
Example 3:
the modified polypropylene with low temperature resistance and high toughness provided in this embodiment 3 comprises, by weight, 81 parts of polypropylene, 51 parts of a block copolymer, 16 parts of a toughening agent, 13 parts of grafted polypropylene, 11 parts of an antioxidant, 9 parts of a lubricant, and 6 parts of glass fiber.
The preparation process of example 3 is the same as in example 1 and will not be described here.
Example 4:
the modified polypropylene with low temperature resistance and high toughness provided in this embodiment 4 comprises, by weight, 119 parts of polypropylene, 69 parts of a block copolymer, 29 parts of a toughening agent, 21 parts of grafted polypropylene, 27 parts of an antioxidant, 11 parts of a lubricant, and 9 parts of glass fiber.
The preparation process of example 4 is the same as in example 1 and will not be described here.
Example 5:
the modified polypropylene provided in this embodiment 5 with low temperature resistance and high toughness includes, by weight, 100 parts of polypropylene, 60 parts of block copolymer, 22.5 parts of toughening agent, 17 parts of grafted polypropylene, 19 parts of antioxidant, 10 parts of lubricant, and 7.5 parts of glass fiber.
The preparation process of example 5 is the same as in example 1 and will not be described here.
Example 6:
the modified polypropylene provided in this embodiment 6 with low temperature resistance and high toughness includes, by weight, 80.1 parts of polypropylene, 50.1 parts of block copolymer, 15.1 parts of toughening agent, 12.1 parts of grafted polypropylene, 10.1 parts of antioxidant, 8.1 parts of lubricant, and 5.1 parts of glass fiber.
The preparation process of example 6 is the same as in example 1 and will not be described here.
Example 7:
the modified polypropylene provided in this embodiment 7 with low temperature resistance and high toughness includes, by weight, 119.9 parts of polypropylene, 69.9 parts of block copolymer, 29.9 parts of toughening agent, 21.9 parts of grafted polypropylene, 27.9 parts of antioxidant, 11.9 parts of lubricant, and 9.9 parts of glass fiber.
The preparation process of example 7 is the same as in example 1 and will not be described here.
Example 8:
the modified polypropylene provided in this embodiment 8 with low temperature resistance and high toughness includes, by weight, 81.1 parts of polypropylene, 51.1 parts of a block copolymer, 16.1 parts of a toughening agent, 13.1 parts of grafted polypropylene, 11.1 parts of an antioxidant, 9.1 parts of a lubricant, and 6.1 parts of glass fiber.
The preparation process of example 8 is the same as in example 1 and will not be described here.
Example 9:
the modified polypropylene with low temperature resistance and high toughness provided in this embodiment 9 comprises, by weight, 118.9 parts of polypropylene, 68.9 parts of a block copolymer, 28.9 parts of a toughening agent, 20.9 parts of grafted polypropylene, 26.9 parts of an antioxidant, 10.9 parts of a lubricant, and 8.9 parts of glass fibers.
The preparation process of example 9 is the same as in example 1 and will not be described here.
Example 10:
the modified polypropylene with low temperature resistance and high toughness provided in this embodiment 10 comprises, by weight, 80.5 parts of polypropylene, 50.5 parts of a block copolymer, 15.5 parts of a toughening agent, 12.5 parts of grafted polypropylene, 10.5 parts of an antioxidant, 8.5 parts of a lubricant, and 5.5 parts of glass fibers.
The preparation process of example 10 is the same as in example 1 and will not be described here.
Example 11:
the modified polypropylene provided in this embodiment 11 with low temperature resistance and high toughness includes, by weight, 119.5 parts of polypropylene, 69.5 parts of block copolymer, 29.5 parts of toughening agent, 21.5 parts of grafted polypropylene, 27.5 parts of antioxidant, 11.5 parts of lubricant, and 9.5 parts of glass fiber.
The preparation process of example 11 is the same as in example 1 and will not be described here.
Example 12:
the modified polypropylene provided in this embodiment 12 with low temperature resistance and high toughness includes, by weight, 81.5 parts of polypropylene, 51.5 parts of a block copolymer, 16.5 parts of a toughening agent, 13.5 parts of grafted polypropylene, 11.5 parts of an antioxidant, 9.5 parts of a lubricant, and 6.5 parts of glass fiber.
The preparation process of example 12 is the same as in example 1 and will not be described herein.
Example 13:
the modified polypropylene provided in this embodiment 13 with low temperature resistance and high toughness includes, by weight, 118.5 parts of polypropylene, 68.5 parts of block copolymer, 28.5 parts of toughening agent, 20.5 parts of grafted polypropylene, 26.5 parts of antioxidant, 10.5 parts of lubricant, and 8.5 parts of glass fiber.
The preparation process of example 13 is the same as in example 1 and will not be described here.
The 13 kinds of the above-mentioned embodiments have the same preparation method, but the weight parts of the raw materials are different; the mixed use of the toughening agent and the glass fiber can effectively improve the toughness and the strength of the material, the lubricant can improve the fluidity of the polypropylene material, the processing and the forming are facilitated, the grafted polypropylene can effectively improve the compatibility of the material, the antioxidant can be effectively reserved on the performance of the material, the long-time use and the oxidation of the material can be delayed, and the service life of the material is prolonged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The modified polypropylene with low temperature resistance and high toughness comprises the following raw material formula in parts by weight, and is characterized in that: 80-120 parts of polypropylene, 50-70 parts of block copolymer, 15-30 parts of toughening agent, 12-22 parts of grafted polypropylene, 10-28 parts of antioxidant, 8-12 parts of lubricant and 5-10 parts of glass fiber.
2. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 1, wherein: the block copolymer is a hydrogenated styrene-butadiene block copolymer.
3. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 2, wherein: the toughening agent is prepared by mixing one or more of carboxyl nitrile rubber, liquid nitrile rubber, polyvinyl butyral, polyether sulfone and polyphenylene ether ketone according to any proportion.
4. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 3, wherein: the glass fiber is prepared by mixing one or more parts of raw materials of chopped glass fiber and continuous glass fiber in any proportion.
5. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 4, wherein: the antioxidant is prepared by mixing one or more of zinc dialkyl dithiophosphate and zinc dialkyl dithiocarbamate according to any proportion.
6. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 5, wherein: the lubricant is prepared by mixing one or more of molybdenum disulfide, polytetrafluoroethylene, boron nitride and graphite fluoride according to any proportion.
7. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 6, wherein: 81-119 parts of polypropylene, 51-69 parts of block copolymer, 16-29 parts of toughening agent, 13-21 parts of grafted polypropylene, 11-27 parts of antioxidant, 9-11 parts of lubricant and 6-9 parts of glass fiber.
8. The modified polypropylene with low temperature resistance and high toughness as claimed in claim 7, wherein: 100 parts of polypropylene, 60 parts of block copolymer, 22.5 parts of toughening agent, 17 parts of grafted polypropylene, 19 parts of antioxidant, 10 parts of lubricant and 7.5 parts of glass fiber.
9. The preparation method for preparing the modified polypropylene with low temperature resistance and high toughness property as claimed in any one of claims 1-8, is characterized by comprising the following steps:
s1: sampling according to the parts by weight, namely sampling according to the parts by weight, adding the polypropylene, the block copolymer, the toughening agent, the grafted polypropylene, the antioxidant and the lubricant into a stirring pot for mixing, and stirring at the speed of 830r/min-950r/min for 20min-60min to obtain a first component for later use;
s2: sampling according to the weight part, adding the first component into a double-screw extruder, and extruding in the environment with the temperature of 235-250 ℃ and the vacuum degree of 0.04-0.08 MPa to obtain a second component for later use;
s3: sampling according to the weight parts, adding the glass fiber and the second component into a stirring pot, mixing, and stirring at the speed of 900r/min-1100r/min for 40min-110min to obtain a third component for later use;
s4: sampling according to the weight parts, adding the third component into cold water with the temperature of 5-12 ℃ for cooling for 0.5-1.5 min, and granulating the cooled third component in a cutter machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010801061.3A CN111793280A (en) | 2020-08-11 | 2020-08-11 | Modified polypropylene with low temperature resistance and high toughness and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010801061.3A CN111793280A (en) | 2020-08-11 | 2020-08-11 | Modified polypropylene with low temperature resistance and high toughness and preparation method thereof |
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| CN202010801061.3A Withdrawn CN111793280A (en) | 2020-08-11 | 2020-08-11 | Modified polypropylene with low temperature resistance and high toughness and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778633A (en) * | 2020-12-29 | 2021-05-11 | 无锡市宏佳华新材料有限公司 | High-toughness cold-resistant PP plate and production process thereof |
| CN114957857A (en) * | 2022-06-20 | 2022-08-30 | 安徽亿鸿新材料科技有限公司 | High-toughness BOPP film and manufacturing method thereof |
-
2020
- 2020-08-11 CN CN202010801061.3A patent/CN111793280A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778633A (en) * | 2020-12-29 | 2021-05-11 | 无锡市宏佳华新材料有限公司 | High-toughness cold-resistant PP plate and production process thereof |
| CN114957857A (en) * | 2022-06-20 | 2022-08-30 | 安徽亿鸿新材料科技有限公司 | High-toughness BOPP film and manufacturing method thereof |
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Application publication date: 20201020 |