CN113563618A - Polyethylene repeating film and preparation method thereof - Google Patents
Polyethylene repeating film and preparation method thereof Download PDFInfo
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- CN113563618A CN113563618A CN202110920744.5A CN202110920744A CN113563618A CN 113563618 A CN113563618 A CN 113563618A CN 202110920744 A CN202110920744 A CN 202110920744A CN 113563618 A CN113563618 A CN 113563618A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- 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
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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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a polyethylene repeating film and a preparation method thereof, wherein the polyethylene repeating film comprises the following raw materials in parts by weight: 100 parts of high-density polyethylene 609750-. In the invention, high-density polyethylene 6097 is used as a main material, low-density polyethylene 2420D with similar melting point is doped as a blending main material for increasing toughness and softness, and an antistatic agent, a color master batch and silicone oil are blended to form a film, so that the problems of sticking resistance and fresh keeping are solved; the preservation index of the rubber surface reaches the standard after more than 15-20 times of use, and the stripping viscosity is moderate.
Description
Technical Field
The invention relates to the technical field of plastic film manufacturing, in particular to a polyethylene repeating film and a preparation method thereof.
Background
The steel wire radial tire is a foreign production technology introduced in the last 80 th century of China. At present, China has become the first world manufacturing country for the production of radial tires of steel wires, and 7 hundred million radial tires are produced annually. The polyethylene isolating membrane is an essential auxiliary material in the production process of the radial tire, and belongs to a disposable consumable. According to the average calculation of the total output of the radial tires, about 6-7 million tons of isolating membranes are consumed in the radial tire industry in China every year, and the radial tire is an auxiliary material which occupies the greatest proportion of the manufacturing cost of the radial tire except for a framework material. The repeated film of the invention can be repeatedly used for about 20 times, and managed enterprises can be repeatedly used for more than 30 times, thus the cost can be reduced by 50-70% compared with the original disposable polyethylene isolation film, and the polyethylene resource can be saved by 6-7 kilotons every year.
Currently, the "polyethylene barrier films" used by tire manufacturers are disposable. It has high consumption and high cost. In addition, in the production of radial tires, the temperature of the barrier film is high when the barrier film is attached to the rubber, and is about 80 ℃. The temperature is very easy to activate polyethylene molecules, and the polyethylene molecules are difficult to peel off after being tightly attached to rubber. The anti-sticking agent is added into the disposable film to solve the problem of difficult peeling, but the anti-sticking agent influences the fresh-keeping effect of the isolating film.
Therefore, it is an urgent need to solve the problem of providing a polyethylene repeating film which can be repeatedly used and can solve the problem of difficult peeling, and a method for preparing the same.
Disclosure of Invention
In view of the above, the invention provides a polyethylene repeating film and a preparation method thereof, which can solve the problems that the existing disposable film has high viscosity and low melting point, and is deformed during peeling and cannot be reused.
In order to achieve the purpose, the invention adopts the following technical scheme: a polyethylene repeating film comprises the following raw materials in parts by weight: 100 parts of high-density polyethylene 609750-.
The invention has the beneficial effects that: in the invention, high-density polyethylene 6097 is used as a main material, low-density polyethylene 2420D with similar melting point is doped as a blending main material for increasing toughness and softness, and an antistatic agent, a color master batch and silicone oil are blended to form a film, so that the problems of sticking resistance and fresh keeping are solved; the preservation index of the rubber surface reaches the standard after more than 15-20 times of use, and the stripping viscosity is moderate.
Preferably, the feed comprises the following raw materials in parts by weight: 609750 parts of high-density polyethylene, 2420D 45 parts of low-density polyethylene, 2 parts of color master batch, 1 part of antistatic agent and 0.05 part of silicone oil.
The invention also provides a preparation method of the polyethylene repeating film, which comprises the following steps:
(1) weighing the raw materials according to the weight parts of the polyethylene repeated film, and mixing to obtain a mixture;
(2) and putting the mixture into a blowing, drawing and pressing integrated plastic film unit for film blowing, splitting, drawing, pressing and shaping, cooling and rolling to obtain the polyethylene repeated film.
Preferably, in the step (1), the mixing time is 15min, and the mixing speed is 110-.
Preferably, in the step (2), the specific operations of blowing and splitting are as follows: a host computer: 44r/min, current: 5.5A, the upward traction speed is 0.9-4.5m/min, the flattening tension is 3.5-7.5kg, the preheating speed is 1.1-4.7 m/min, and the temperature is 110-130 ℃.
Preferably, in the step (2), the stretching is specifically performed by: the speed is 1.5-9.4m/min, and the temperature is 110-.
Preferably, in the step (2), the specific operation of press-setting is as follows: the speed is 1.5-9.4m/min, and the temperature is 110-.
Preferably, in the step (2), the cooling is carried out to 25-35 ℃, and the winding torque is 130-185V.
Preferably, the technical indexes of the polyethylene repeated film prepared in the step (2) are that the tensile strength is: the longitudinal direction is more than or equal to 48mpa, and the transverse direction is more than or equal to 22 mpa; elongation at break: longitudinal is more than or equal to 55 percent, and transverse is more than or equal to 250 percent; right angle tear strength: longitudinal more than or equal to 120N/mm, transverse more than or equal to 170N/mm, and melting point more than 100 ℃.
According to the technical scheme, compared with the prior art, the invention discloses and provides the polyethylene repeating film and the preparation method thereof, and the polyethylene repeating film has the beneficial effects that:
the problem that the existing disposable film is high in viscosity, low in melting point and incapable of being reused due to deformation during stripping is solved, the existing isolation cost can be reduced by over 50%, the macroscopic calculation can reduce the cost of about 4 million yuan per year for 7 million radial tires in China, the isolation amount of polyethylene can be reduced by about 5 million tons per year, and 6-7 kilotons of nonrenewable plastic resources can be saved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 plastic film blowing, drawing and pressing machine set in the following embodiments selects the device with the application number of 202021725392.5, which is named as a device integrating blowing, drawing and pressing into a whole plastic film machine set.
The color master batch is produced by Beijing cis-Tian plastic factories.
The antistatic agent is PE long-acting antistatic agent from Shandong polymer antistatic technology limited.
Example 1
The polyethylene repeating film comprises the following raw materials: 609750kg of high-density polyethylene, 2420D 45kg of low-density polyethylene, 0.8kg of color masterbatch, 0.5kg of antistatic agent and 50g of silicone oil;
the preparation method of the polyethylene repeating film comprises the following steps:
(1) weighing the raw materials according to the weight, putting the raw materials into a high-speed mixer with the capacity of 200kg, mixing for 15min to obtain a mixture, then putting the mixture into an extruder, and controlling the following parameters:
temperature of each zone of the extruder: zone 1 165 ℃, zone 2 170 ℃, zone 3 175 ℃, zone 4 180 ℃, zone 5 185 ℃, zone 6 ℃, zone 7 ℃, zone 187 ℃, zone 8 ℃, neck 190 ℃, neck mold 191 ℃;
(2) putting the mixture into a blowing, pulling and pressing integrated plastic film unit, and controlling the following parameters:
44r/min of a host, 90mm of the milling rod diameter, 30:1 of length-diameter ratio and 5.5A of current; upward traction is carried out for 4.5m/min, the flattening tension is 3.5kg, the preheating speed is 4.7m/min, and the temperature is 121 ℃; the drawing speed is 14m/min, and the temperature is 123 ℃; pressing and shaping at a speed of 14m/min and a temperature of 120 ℃ and a shaping width of 940 mm; synchronously cooling for 14m/min, wherein the cooling water temperature is 25 ℃; the width of the finished product is 840mm, the thickness is 0.095mm, and the rolling moment is 130V.
And (3) detecting physical properties of the finished product: tensile strength: longitudinal 48mpa, transverse 23 mpa; elongation at break: 70% in the longitudinal direction and 290% in the transverse direction. And (3) right-angle tearing: longitudinal 128N/mm, transverse 180N/mm, melting point 108 ℃.
The above-mentioned repeated film can be repeatedly used for 15-20 times when it is actually used.
Example 2
The polyethylene repeating film comprises the following raw materials: 6097100 kg of high-density polyethylene, 2420D20 kg of low-density polyethylene, 1.2kg of color masterbatch, 1.2kg of antistatic agent and 100g of silicone oil;
the preparation method of the polyethylene repeating film comprises the following steps:
(1) weighing the raw materials according to the weight, putting the raw materials into a high-speed mixer with the capacity of 200kg, mixing for 15min to obtain a mixture, then putting the mixture into an extruder, and controlling the following parameters:
the temperature of each zone of the extruder is 165 ℃ in a 1 zone, 170 ℃ in a 2 zone, 175 ℃ in a 3 zone, 180 ℃ in a 4 zone, 185 ℃ in a 5 zone, 186 ℃ in a 6 zone, 187 ℃ in a 7 zone, 188 ℃ in an 8 zone, 190 ℃ in a neck and 191 ℃ in a neck;
(2) putting the mixture into a blowing, pulling and pressing integrated plastic film unit, and controlling the following parameters:
host 44r/min, screw diameter 90mm, length-diameter ratio 30:1, current 5.5A; the upper traction is 1.0 m/min. Flattening tension is 7.5 kg; the preheating speed is 1.1m, and the temperature is 127 ℃; the drawing speed is 4.4m/min, and the temperature is 129 ℃; pressing and shaping at the temperature of 125 ℃ and the shaping width of 950mm for 4.5 m/min; synchronously cooling for 4.5m, wherein the cooling water temperature is 25 ℃; the width of the finished product is 850mm, the thickness is 0.3mm, and the rolling moment is 210V.
And (3) detecting physical properties of the finished product: tensile strength: longitudinal 58mpa, lateral 28 mpa; elongation at break: longitudinal direction is 60%, and transverse direction is 260%; and (3) right-angle tearing: the longitudinal direction is 121N/mm, and the transverse direction is 198N/mm; melting point: 109 ℃.
The polyethylene repeated film for calendering the innerliner of the tire can be repeatedly used for more than 300 times in actual use.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The polyethylene repeating film is characterized by comprising the following raw materials in parts by weight: 100 parts of high-density polyethylene 609750-.
2. The polyethylene repeating film as claimed in claim 1, comprising the following raw materials in parts by weight: 609750 parts of high-density polyethylene, 2420D 45 parts of low-density polyethylene, 2 parts of color master batch, 1 part of antistatic agent and 0.05 part of silicone oil.
3. A preparation method of a polyethylene repeating film is characterized by comprising the following steps:
(1) weighing the raw materials according to the parts by weight of the polyethylene repeating film as defined in claim 1 or 2, and mixing to obtain a mixture;
(2) and putting the mixture into a blowing, drawing and pressing integrated plastic film unit for film blowing, splitting, drawing, pressing and shaping, cooling and rolling to obtain the polyethylene repeated film.
4. The method as claimed in claim 3, wherein in step (1), the mixing time is 15min and the mixing speed is 110-140 r/min.
5. The method for preparing a polyethylene repeating film as claimed in claim 3, wherein in the step (2), the specific operation of blowing and splitting is as follows: a host computer: 44r/min, current: 5.5A, the upward traction speed is 0.9-4.5m/min, the flattening tension is 3.5-7.5kg, the preheating speed is 1.1-4.7 m/min, and the temperature is 110-130 ℃.
6. The method for preparing a polyethylene repeating film according to claim 3, wherein in the step (2), the stretching is specifically performed by: the speed is 1.5-9.4m/min, and the temperature is 110-.
7. The method for preparing a polyethylene repeating film as claimed in claim 3, wherein in the step (2), the specific operation of press-setting is as follows: the speed is 1.5-9.4m/min, and the temperature is 110-.
8. The method as claimed in claim 3, wherein the cooling temperature in step (2) is 25-35 ℃, and the rolling torque is 130-185V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110920744.5A CN113563618A (en) | 2021-08-11 | 2021-08-11 | Polyethylene repeating film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110920744.5A CN113563618A (en) | 2021-08-11 | 2021-08-11 | Polyethylene repeating film and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5091228A (en) * | 1987-07-13 | 1992-02-25 | Mitsubishi Kasei Corporation | Linear polyethylene film and process for producing the same |
| CN1468896A (en) * | 2003-06-11 | 2004-01-21 | 卢建忠 | Preserving isolation plastic film for rubber |
| CN103373030A (en) * | 2012-04-25 | 2013-10-30 | 上海优珀斯材料科技有限公司 | Hydrophilic anti-adherent film and preparation method |
| CN213353611U (en) * | 2020-08-18 | 2021-06-04 | 黑龙江省穆棱塑料有限公司 | Plastic film unit integrating blowing, pulling and pressing |
-
2021
- 2021-08-11 CN CN202110920744.5A patent/CN113563618A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5091228A (en) * | 1987-07-13 | 1992-02-25 | Mitsubishi Kasei Corporation | Linear polyethylene film and process for producing the same |
| CN1468896A (en) * | 2003-06-11 | 2004-01-21 | 卢建忠 | Preserving isolation plastic film for rubber |
| CN103373030A (en) * | 2012-04-25 | 2013-10-30 | 上海优珀斯材料科技有限公司 | Hydrophilic anti-adherent film and preparation method |
| CN213353611U (en) * | 2020-08-18 | 2021-06-04 | 黑龙江省穆棱塑料有限公司 | Plastic film unit integrating blowing, pulling and pressing |
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