CN111560131A - Preparation method of low-temperature-resistant modified plastic - Google Patents
Preparation method of low-temperature-resistant modified plastic Download PDFInfo
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- CN111560131A CN111560131A CN202010445464.9A CN202010445464A CN111560131A CN 111560131 A CN111560131 A CN 111560131A CN 202010445464 A CN202010445464 A CN 202010445464A CN 111560131 A CN111560131 A CN 111560131A
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention discloses a preparation method of low-temperature-resistant modified plastic, which comprises the following steps: SO1, preparing raw materials; s02, preparing an additive; s03, adding the raw materials in the step S01 into a mixer, and uniformly stirring and mixing; s04, adding the additive in the step S02 into a mixer to continue stirring; s05, adding the mixture obtained in the step S04 into a double-screw extruder, and performing an extrusion process to prepare the modified material.
Description
Technical Field
The invention belongs to the technical field of modified plastic processing, and particularly relates to a preparation method of low-temperature-resistant modified plastic.
Background
With the development and progress of society and the increasing living standard of materials, people have higher requirements on living and working environments. Because the plastic has the advantages of light weight, no corrosion, good insulation, low cost and the like, plastic products are used in many links in various fields.
With the wide application of plastics in different fields, different properties are required, and when the plastics are used in some cold environments, high cold resistance and high toughness are required.
Disclosure of Invention
In order to overcome the problems that the plastic needs to have different performances when widely applied in different fields, and needs to have high cold resistance and high toughness when used in some cold environments, the invention provides a preparation method of low-temperature-resistant modified plastic, which adopts the following technical scheme:
a preparation method of low-temperature-resistant modified plastic comprises the following steps:
SO1, preparing raw materials in the following weight ratio: 50-70 parts of low-density polyethylene, 20-40 parts of chlorinated polyethylene, 10-30 parts of calcium carbonate, 2-10 parts of silicon dioxide, 5-15 parts of alkali-free glass fiber and 5-15 parts of polyacrylonitrile-based carbon fiber;
s02, preparing additives in the following weight ratio: 5-10 parts of a cold-resistant agent, 1-5 parts of a high-molecular toughening agent, 2-5 parts of an antioxidant, 1-5 parts of reduced iron powder, 5-15 parts of an auxiliary antioxidant, 5-15 parts of a light stabilizer, 5-10 parts of a fireproof flame retardant, 5-10 parts of a lubricant and 5-10 parts of a dispersing agent;
s03, adding the raw materials in the step S01 into a mixer, and uniformly stirring and mixing;
s04, adding the additive in the step S02 into a mixer to continue stirring;
s05, adding the mixture obtained in the step S04 into a double-screw extruder, and performing an extrusion process to prepare the modified material.
Further, the additive in step S02 is dried to a moisture content of less than 1%.
Further, in step S02, the polymer toughening agent is a maleic anhydride grafted ethylene-octene copolymer, the antioxidant is an antioxidant 1010, the auxiliary antioxidant is thioester, the light stabilizer is carbon black of an ultraviolet light shielding agent, the dispersant is absolute ethyl alcohol, and the lubricant is stearic acid.
Further, in step S03, the stirring temperature is 60-80 ℃, the stirring speed is 800-1200 rpm, and the stirring time is 20-45 minutes.
Further, in step S04, the stirring is continued for 15 to 20 minutes.
Further, in step S05, the processing temperature of the twin-screw extruder is 180-230 ℃, and the rotation speed of the screw is 50-70 r/min.
Has the advantages that: the invention has the advantages of low price of raw materials, simple production process, low cost, super cold resistance and toughness, and prolonged service life of plastics in low-temperature environment.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions 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, 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 first embodiment is as follows:
as shown in fig. 1, a preparation method of low temperature resistant modified plastic comprises the following steps:
SO1, preparing raw materials in the following weight ratio: 50 parts of low-density polyethylene, 20 parts of chlorinated polyethylene, 10 parts of calcium carbonate, 2 parts of silicon dioxide, 5 parts of alkali-free glass fiber and 5 parts of polyacrylonitrile-based carbon fiber;
s02, preparing additives in the following weight ratio: 5 parts of a cold-resistant agent, 1 part of a high-molecular toughening agent, 2 parts of an antioxidant, 1 part of reduced iron powder, 5 parts of an auxiliary antioxidant, 5 parts of a light stabilizer, 5 parts of a fireproof flame retardant, 5 parts of a lubricant and 5 parts of a dispersing agent;
s03, adding the raw materials in the step S01 into a mixer, stirring and mixing uniformly, wherein the stirring temperature is 60 ℃, the stirring speed is 800 revolutions per minute, and the stirring time is 20 minutes;
s04, adding the additive in the step S02 into a mixer to continue stirring for 15 minutes;
s05, adding the mixture obtained in the step S04 into a double-screw extruder, and performing an extrusion process, wherein the processing temperature of the double-screw extruder is 180 ℃, and the rotating speed of a screw is 50 revolutions per minute, so that the modified material can be prepared.
Wherein the additive in the step S02 is dried until the water content is less than 1%, the high molecular toughening agent is maleic anhydride grafted ethylene-octene copolymer, the antioxidant is antioxidant 1010, the auxiliary antioxidant is thioester, the light stabilizer is carbon black of ultraviolet light shielding agent, the dispersant is absolute ethyl alcohol, and the lubricant is stearic acid.
Example two:
a preparation method of low-temperature-resistant modified plastic comprises the following steps:
SO1, preparing raw materials in the following weight ratio: 70 parts of low-density polyethylene, 40 parts of chlorinated polyethylene, 30 parts of calcium carbonate, 10 parts of silicon dioxide, 15 parts of alkali-free glass fiber and 15 parts of polyacrylonitrile-based carbon fiber;
s02, preparing additives in the following weight ratio: 10 parts of a cold-resistant agent, 5 parts of a high-molecular toughening agent, 5 parts of an antioxidant, 5 parts of reduced iron powder, 15 parts of an auxiliary antioxidant, 15 parts of a light stabilizer, 10 parts of a fireproof flame retardant, 10 parts of a lubricant and 10 parts of a dispersing agent;
s03, adding the raw materials in the step S01 into a mixer, stirring and mixing uniformly, wherein the stirring temperature is 80 ℃, the stirring speed is 1200 r/min, and the stirring time is 45 min;
s04, adding the additive in the step S02 into a mixer to continue stirring for 20 minutes;
s05, adding the mixture obtained in the step S04 into a double-screw extruder, and performing an extrusion process, wherein the processing temperature of the double-screw extruder is 230 ℃, and the rotating speed of a screw is 70 r/min, so that the modified material can be prepared.
Wherein the additive in the step S02 is dried until the water content is less than 1%, the high molecular toughening agent is maleic anhydride grafted ethylene-octene copolymer, the antioxidant is antioxidant 1010, the auxiliary antioxidant is thioester, the light stabilizer is carbon black of ultraviolet light shielding agent, the dispersant is absolute ethyl alcohol, and the lubricant is stearic acid.
The invention has the advantages of low price of raw materials, simple production process, low cost, super cold resistance and toughness, and prolonged service life of plastics in low-temperature environment.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A preparation method of low-temperature-resistant modified plastic is characterized by comprising the following steps: the method comprises the following steps:
SO1, preparing raw materials in the following weight ratio: 50-70 parts of low-density polyethylene, 20-40 parts of chlorinated polyethylene, 10-30 parts of calcium carbonate, 2-10 parts of silicon dioxide, 5-15 parts of alkali-free glass fiber and 5-15 parts of polyacrylonitrile-based carbon fiber;
s02, preparing additives in the following weight ratio: 5-10 parts of a cold-resistant agent, 1-5 parts of a high-molecular toughening agent, 2-5 parts of an antioxidant, 1-5 parts of reduced iron powder, 5-15 parts of an auxiliary antioxidant, 5-15 parts of a light stabilizer, 5-10 parts of a fireproof flame retardant, 5-10 parts of a lubricant and 5-10 parts of a dispersing agent;
s03, adding the raw materials in the step S01 into a mixer, and uniformly stirring and mixing;
s04, adding the additive in the step S02 into a mixer to continue stirring;
s05, adding the mixture obtained in the step S04 into a double-screw extruder, and performing an extrusion process to prepare the modified material.
2. The method for preparing low temperature resistant modified plastic according to claim 1, wherein the method comprises the following steps: and drying the additive in the step S02 until the water content is less than 1%.
3. The method for preparing low temperature resistant modified plastic according to claim 1, wherein the method comprises the following steps: in the step S02, the polymer toughening agent is a maleic anhydride grafted ethylene-octene copolymer, the antioxidant is antioxidant 1010, the auxiliary antioxidant is thioester, the light stabilizer is carbon black of an ultraviolet light shielding agent, the dispersant is absolute ethyl alcohol, and the lubricant is stearic acid.
4. The method for preparing low temperature resistant modified plastic according to claim 1, wherein the method comprises the following steps: in the step S03, the stirring temperature is 60-80 ℃, the stirring speed is 800-1200 rpm, and the stirring time is 20-45 minutes.
5. The method for preparing low temperature resistant modified plastic according to claim 1, wherein the method comprises the following steps: in the step S04, the stirring is continued for 15 to 20 minutes.
6. The method for preparing low temperature resistant modified plastic according to claim 1, wherein the method comprises the following steps: in the step S05, the processing temperature of the twin-screw extruder is 180-230 ℃, and the rotation speed of the screw is 50-70 r/min.
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| CN202010445464.9A CN111560131A (en) | 2020-05-24 | 2020-05-24 | Preparation method of low-temperature-resistant modified plastic |
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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 |
| CN113416359A (en) * | 2021-08-06 | 2021-09-21 | 安徽强茗塑业科技有限公司 | Preparation method of low-temperature-resistant modified plastic |
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| CN109401266A (en) * | 2018-10-19 | 2019-03-01 | 桐城市鸿江包装有限公司 | A kind of preparation method of low temperature resistant flame retardant plastic packaging material |
| CN109679184A (en) * | 2018-12-05 | 2019-04-26 | 高邮市汉升高分子材料有限公司 | A kind of corrosion resistant modified plastics and preparation method thereof |
| CN109679332A (en) * | 2018-12-26 | 2019-04-26 | 聚威工程塑料(上海)有限公司 | Flexible PA6 of a kind of low temperature resistant HI high impact height and preparation method thereof |
| CN110698829A (en) * | 2019-09-12 | 2020-01-17 | 苏州通亿利模具实业有限公司 | Low-temperature-resistant high-toughness composite material |
| CN111057285A (en) * | 2019-11-26 | 2020-04-24 | 泗阳金拓驰环保科技有限公司 | Preparation method of corrosion-resistant modified plastic |
-
2020
- 2020-05-24 CN CN202010445464.9A patent/CN111560131A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109401266A (en) * | 2018-10-19 | 2019-03-01 | 桐城市鸿江包装有限公司 | A kind of preparation method of low temperature resistant flame retardant plastic packaging material |
| CN109679184A (en) * | 2018-12-05 | 2019-04-26 | 高邮市汉升高分子材料有限公司 | A kind of corrosion resistant modified plastics and preparation method thereof |
| CN109679332A (en) * | 2018-12-26 | 2019-04-26 | 聚威工程塑料(上海)有限公司 | Flexible PA6 of a kind of low temperature resistant HI high impact height and preparation method thereof |
| CN110698829A (en) * | 2019-09-12 | 2020-01-17 | 苏州通亿利模具实业有限公司 | Low-temperature-resistant high-toughness composite material |
| CN111057285A (en) * | 2019-11-26 | 2020-04-24 | 泗阳金拓驰环保科技有限公司 | Preparation method of corrosion-resistant modified plastic |
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 |
| CN113416359A (en) * | 2021-08-06 | 2021-09-21 | 安徽强茗塑业科技有限公司 | Preparation method of low-temperature-resistant modified plastic |
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