CN110819022A - High impact polystyrene material and preparation method thereof - Google Patents
High impact polystyrene material and preparation method thereof Download PDFInfo
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- CN110819022A CN110819022A CN201911246149.7A CN201911246149A CN110819022A CN 110819022 A CN110819022 A CN 110819022A CN 201911246149 A CN201911246149 A CN 201911246149A CN 110819022 A CN110819022 A CN 110819022A
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- impact polystyrene
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
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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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- Polymers & Plastics (AREA)
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Abstract
The invention provides a preparation method of a high impact polystyrene material, which comprises the following steps: firstly, initially mixing polystyrene and a lignin-based toughening agent in a high-speed mixer to obtain a premix; and step two, carrying out melt extrusion on the premix through a double-screw extruder to obtain the high impact polystyrene material. The invention also provides a high impact polystyrene material. The invention has the following beneficial effects: the compatibility problem is well solved; the impact resistance effect is obviously improved; and (4) ageing resistance.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of preparation of polystyrene materials, in particular to a high impact polystyrene material and a preparation method thereof.
[ background of the invention ]
Polystyrene (PS) is one of the third major varieties of general-purpose plastics, and is widely used in the industries of packaging, electronics, construction, automotive appliances, instruments, daily necessities, toys, and the like because of its advantages of good moldability, good rigidity, low hygroscopicity, and the like. But the polystyrene is brittle, has poor environmental stress cracking resistance and solvent resistance, and has relatively low thermal deformation temperature and low impact strength. In order to improve the impact resistance of PS, engineering plastics or general-purpose plastics with better toughness are usually selected to modify polystyrene. However, engineering plastics or general purpose plastics are not very compatible with PS, and the selection of appropriate solubilizers and processes adds to the cost.
[ summary of the invention ]
The high impact polystyrene material provided by the invention can solve the technical problems related to the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation method of a high impact polystyrene material comprises the following steps:
firstly, initially mixing polystyrene and a lignin-based toughening agent in a high-speed mixer to obtain a premix;
and step two, carrying out melt extrusion on the premix through a double-screw extruder to obtain the high impact polystyrene material.
Preferably, in the first step, the weight ratio of polystyrene: the polystyrene-lignin elastomer is 10: 1-10: 3.
preferably, in step two, the extrusion temperature: 160 ℃ in the first zone, 180 ℃ in the second zone, 200 ℃ in the third zone, 220 ℃ in the fourth zone, 230 ℃ in the fifth zone, 225 ℃ in the head and 100rpm in the main machine.
Preferably, the lignin-based toughening agent is prepared by the following method:
primarily mixing lignin maleate, butyl acrylate, styrene and organic benzoyl peroxide or azodiisobutyronitrile in a high-speed mixer to obtain a premix; and then the premix is extruded by a double-screw extruder to obtain the lignin-based toughening agent.
Preferably, the weight ratio of lignin maleate: butyl acrylate: styrene is 100: (10-30): (5-10).
Preferably, the dosage of the organic benzoyl peroxide or the azodiisobutyronitrile is 0.3 to 1 percent of the mass of the lignin maleate.
Preferably, the extrusion temperature: the first zone is 60 ℃, the second zone is 80 ℃, the third zone is 80 ℃, the fourth zone is 90 ℃, the fifth zone is 90 ℃, the sixth zone is 110 ℃, the head is 120 ℃, and the rotation speed of the main machine is 10 rpm.
Preferably, the lignin maleate is prepared by the following method:
adding 100 parts by mass of dry acid lignin and 30 parts by mass of maleic anhydride into a reactor filled with glycol dimethyl ether, carrying out condensation reflux at 85 ℃, stirring for reaction for 5 hours, cooling to room temperature, filtering and washing to obtain lignin maleic acid ester.
The invention also provides a high impact polystyrene material prepared by the preparation method of the high impact polystyrene material.
The invention has the following beneficial effects:
1. the compatibility problem is well solved, and the lignin-based toughening agent and polystyrene have very good compatibility because the lignin-based toughening agent contains styrene molecules;
2. the impact resistance effect is obviously improved, and the lignin-based toughening agent contains a large amount of flexible butyl acrylate, so that when the lignin-based toughening agent is acted by an external force, the lignin-based toughening agent consumes stress through deformation, and the impact resistance of the polystyrene substrate can be greatly improved;
3. the lignin can absorb ultraviolet light, so the introduction of the lignin also increases the ultraviolet resistance of the material, thereby having better aging resistance.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation method of a high impact polystyrene material, which comprises the following steps:
firstly, initially mixing polystyrene and a lignin-based toughening agent in a high-speed mixer to obtain a premix;
it is further noted that, by mass ratio, polystyrene: the polystyrene-lignin elastomer is 10: 1-10: 3.
the lignin-based toughening agent is prepared by the following method:
primarily mixing lignin maleate, butyl acrylate, styrene and organic benzoyl peroxide or azodiisobutyronitrile in a high-speed mixer to obtain a premix; and then the premix is extruded by a double-screw extruder to obtain the lignin-based toughening agent.
Specifically, according to the mass ratio, the lignin maleic acid ester: butyl acrylate: styrene is 100: (10-30): (5-10). The dosage of the organic benzoyl peroxide or the azodiisobutyronitrile accounts for 0.3 to 1 percent of the mass of the lignin maleate. Extrusion temperature: the first zone is 60 ℃, the second zone is 80 ℃, the third zone is 80 ℃, the fourth zone is 90 ℃, the fifth zone is 90 ℃, the sixth zone is 110 ℃, the head is 120 ℃, and the rotation speed of the main machine is 10 rpm.
The lignin maleate is prepared by the following method:
adding 100 parts by mass of dry acid lignin and 30 parts by mass of maleic anhydride into a reactor filled with glycol dimethyl ether, carrying out condensation reflux at 85 ℃, stirring for reaction for 5 hours, cooling to room temperature, filtering and washing to obtain lignin maleic acid ester.
And step two, carrying out melt extrusion on the premix through a double-screw extruder to obtain the high impact polystyrene material.
It is further noted that the extrusion temperature: 160 ℃ in the first zone, 180 ℃ in the second zone, 200 ℃ in the third zone, 220 ℃ in the fourth zone, 230 ℃ in the fifth zone, 225 ℃ in the head and 100rpm in the main machine.
The invention also provides a high impact polystyrene material prepared by the preparation method of the high impact polystyrene material.
The invention has the following beneficial effects:
1. the compatibility problem is well solved, and the lignin-based toughening agent and polystyrene have very good compatibility because the lignin-based toughening agent contains styrene molecules;
2. the impact resistance effect is obviously improved, and the lignin-based toughening agent contains a large amount of flexible butyl acrylate, so that when the lignin-based toughening agent is acted by an external force, the lignin-based toughening agent consumes stress through deformation, and the impact resistance of the polystyrene substrate can be greatly improved;
3. the lignin can absorb ultraviolet light, so the introduction of the lignin also increases the ultraviolet resistance of the material, thereby having better aging resistance.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described without departing from the generic concept as defined by the claims and the equivalents thereof.
Claims (9)
1. A preparation method of a high impact polystyrene material is characterized by comprising the following steps:
firstly, initially mixing polystyrene and a lignin-based toughening agent in a high-speed mixer to obtain a premix;
and step two, carrying out melt extrusion on the premix through a double-screw extruder to obtain the high impact polystyrene material.
2. The method for preparing a high impact polystyrene material as claimed in claim 1, wherein in the first step, the weight ratio of polystyrene: the polystyrene-lignin elastomer is 10: 1-10: 3.
3. the method for preparing a high impact polystyrene material as claimed in claim 1, wherein in step two, the extrusion temperature: 160 ℃ in the first zone, 180 ℃ in the second zone, 200 ℃ in the third zone, 220 ℃ in the fourth zone, 230 ℃ in the fifth zone, 225 ℃ in the head and 100rpm in the main machine.
4. The method for preparing a high impact polystyrene material as claimed in claim 1, wherein said lignin-based toughening agent is prepared by the following method:
primarily mixing lignin maleate, butyl acrylate, styrene and organic benzoyl peroxide or azodiisobutyronitrile in a high-speed mixer to obtain a premix; and then the premix is extruded by a double-screw extruder to obtain the lignin-based toughening agent.
5. The method for preparing a high impact polystyrene material as claimed in claim 4, wherein the weight ratio of lignin maleate: butyl acrylate: styrene is 100: (10-30): (5-10).
6. The method for preparing a high impact polystyrene material as claimed in claim 4, wherein the amount of said organic benzoyl peroxide or azobisisobutyronitrile is 0.3-1% by mass of lignin maleate.
7. The method for preparing a high impact polystyrene material as claimed in claim 4, wherein the extrusion temperature is: the first zone is 60 ℃, the second zone is 80 ℃, the third zone is 80 ℃, the fourth zone is 90 ℃, the fifth zone is 90 ℃, the sixth zone is 110 ℃, the head is 120 ℃, and the rotation speed of the main machine is 10 rpm.
8. The method for preparing a high impact polystyrene material as claimed in claim 4, wherein said lignin maleate is prepared by the following method:
adding 100 parts by mass of dry acid lignin and 30 parts by mass of maleic anhydride into a reactor filled with glycol dimethyl ether, carrying out condensation reflux at 85 ℃, stirring for reaction for 5 hours, cooling to room temperature, filtering and washing to obtain lignin maleic acid ester.
9. A high impact polystyrene material, characterized in that it is obtained by the process for the preparation of a high impact polystyrene material according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911246149.7A CN110819022A (en) | 2019-12-08 | 2019-12-08 | High impact polystyrene material and preparation method thereof |
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| CN201911246149.7A CN110819022A (en) | 2019-12-08 | 2019-12-08 | High impact polystyrene material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775558A (en) * | 2012-08-03 | 2012-11-14 | 杭州恩光合成革新材料有限公司 | Plant powder modifying material, and preparation method thereof |
| CN107513252A (en) * | 2016-06-16 | 2017-12-26 | 江南大学 | A kind of toughened thermosetting composite and preparation method based on modified starch |
| CN107513246A (en) * | 2016-06-16 | 2017-12-26 | 江南大学 | One kind is based on modified starch toughened thermoplastic composite and preparation method |
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2019
- 2019-12-08 CN CN201911246149.7A patent/CN110819022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775558A (en) * | 2012-08-03 | 2012-11-14 | 杭州恩光合成革新材料有限公司 | Plant powder modifying material, and preparation method thereof |
| CN107513252A (en) * | 2016-06-16 | 2017-12-26 | 江南大学 | A kind of toughened thermosetting composite and preparation method based on modified starch |
| CN107513246A (en) * | 2016-06-16 | 2017-12-26 | 江南大学 | One kind is based on modified starch toughened thermoplastic composite and preparation method |
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