CN118307910A - PVC film and preparation process thereof - Google Patents
PVC film and preparation process thereof Download PDFInfo
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- CN118307910A CN118307910A CN202410422345.XA CN202410422345A CN118307910A CN 118307910 A CN118307910 A CN 118307910A CN 202410422345 A CN202410422345 A CN 202410422345A CN 118307910 A CN118307910 A CN 118307910A
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- Prior art keywords
- pvc film
- temperature
- mixing
- stabilizer
- raw materials
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 47
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 47
- 239000003381 stabilizer Substances 0.000 claims abstract description 34
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000004593 Epoxy Substances 0.000 claims abstract description 16
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000003607 modifier Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 150000002148 esters Chemical class 0.000 claims abstract description 5
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 229920000223 polyglycerol Polymers 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000032683 aging Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C08J2323/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
-
- 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
- C08J2400/00—Characterised by the use of unspecified polymers
-
- 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
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
-
- 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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- 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
- C08K5/00—Use of organic ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a PVC film and a preparation process thereof, wherein the structure of the PVC film comprises modified polyvinyl chloride resin, a calcium-zinc main stabilizer, an epoxy auxiliary stabilizer, a plasticizer, an antioxidant and a surface modifier. The beneficial effects are that: in the invention, the added surface modifier is a graft polymer, so that the compatibility of the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer can be realized when the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer are used together, the exudation phenomenon of the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer can be improved when the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer are used together, and the antioxidant is polyglycerol ester to regulate the hardness, softness, weather resistance and other properties of the PVC product; in the processing and manufacturing process, the raw materials are effectively mixed by controlling the temperature in the sequential adding process of the raw materials, and the effectiveness of stirring and mixing the raw materials is ensured.
Description
Technical Field
The invention relates to the field of PVC preparation, in particular to a PVC film and a preparation process thereof.
Background
PVC film is used as a common plastic film material and has wide application in the fields of building decoration, packaging, printing, medical treatment and the like. Its excellent mechanical properties, chemical stability and plasticity make it an indispensable material in many industries.
The surface of the finished product of the existing PVC film is rough, the compatibility of the stabilizer is poor, and the phenomena of aging and the like of the PVC film can occur after the PVC film is used.
Therefore, there is an urgent need for a PVC film and a process for preparing the same, which can achieve effective compatibility of PVC film components, improve the exudation phenomenon occurring during the use of the film, and improve the quality of the PVC film.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a PVC film and a preparation process thereof, so as to solve the defects that the surface of a finished product of the PVC film in the prior art is rough, the compatibility of a stabilizer is poor, and the phenomena of aging and the like of the PVC film can occur after the PVC film is used.
In order to achieve the above object, the present invention is realized by the following technical scheme:
a PVC film and a structure thereof, which comprises,
Modified polyvinyl chloride resin;
A calcium-zinc based main stabilizer;
An epoxy auxiliary stabilizer;
A plasticizer;
An antioxidant;
A surface modifying agent.
As a further aspect of the invention, silicate and carbon black are also added.
As a further proposal of the invention, the raw materials comprise, according to weight percent,
As a further proposal of the invention, the surface modifier is a graft polymer, which can realize the compatibility of the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer when in use, so as to improve the exudation phenomenon when in use.
As a further scheme of the invention, the antioxidant is polyglycerol ester, and the hardness, softness, weather resistance and other properties of the PVC product are regulated.
A preparation process of a PVC film comprises the following steps:
S1) mixing raw materials: after the temperature of a mixing drum in a mixer is controlled to be 160-200 ℃, firstly putting the modified polyvinyl chloride resin into the mixer for preliminary melt mixing, after 15min, adjusting the temperature in the mixing drum to be 150 ℃, and then adding the plasticizer, the antioxidant, the surface modifier and the modified polyvinyl chloride resin for continuous stirring and mixing for 1 hour; after mixing for 1 hour, regulating the temperature in the mixer to 180-200 ℃ again, and adding silicate and carbon black into the mixer for mixing and stirring;
S2) plasticizing extrusion: regulating the temperature of plasticizing extrusion equipment to 210 ℃, and gradually heating, melting and extruding the mixture after the mixing in the step S1 under the rotation of a screw rod of a plasticizing extruder;
s3) extrusion molding: after the step S2 is completed, the temperature of the extruder head is regulated to 220 ℃, and then the materials are uniformly extruded and molded;
S4) cooling and solidifying: after the temperature of the cooling roller is controlled to be 20-35 ℃, the film is uniformly cooled by the cooling roller after finishing the step S3, so that the film formation and dimensional stability are maintained.
According to the operation of the steps, the raw materials in the PVC film processing process can be effectively mixed in a temperature control manner, and the quality of a finished product is enhanced after the raw materials are processed.
As a further proposal of the invention, after the temperature adjustment in the step S1 approaches to uniform temperature, corresponding raw materials are added successively.
As a further aspect of the present invention, the extrusion heads in steps S2 and S3 are provided with temperature control alarm devices.
Advantageous effects of the invention
Compared with the traditional PVC film and the preparation process thereof, the PVC film has the following beneficial effects:
In the invention, the added surface modifier is a graft polymer, so that the compatibility of the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer can be realized when the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer are used together, the exudation phenomenon of the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer can be improved when the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer are used together, and the antioxidant is polyglycerol ester to regulate the hardness, softness, weather resistance and other properties of the PVC product;
in the processing and manufacturing process, the raw materials are effectively mixed by controlling the temperature in the sequential adding process of the raw materials, and the effectiveness of stirring and mixing the raw materials is ensured.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Examples:
The invention provides a PVC film and a technical scheme of a preparation process thereof:
A PVC film, comprising:
modified polyvinyl chloride resin;
A calcium-zinc based main stabilizer;
An epoxy auxiliary stabilizer;
A plasticizer;
An antioxidant;
A surface modifying agent.
Silicate and carbon black are also added.
The raw materials of the composition comprise, according to weight percent,
The surface modifier is a grafted polymer, and can realize the compatibility of the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer when the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer are used together, so as to improve the exudation phenomenon when the epoxy auxiliary stabilizer and the calcium-zinc main stabilizer are used together.
The antioxidant is polyglycerol ester, and can regulate hardness, softness, weather resistance, etc. of PVC product.
A preparation process of a PVC film comprises the following steps:
S1) mixing raw materials: after the temperature of a mixing drum in a mixer is controlled to be 160-200 ℃, firstly putting the modified polyvinyl chloride resin into the mixer for preliminary melt mixing, after 15min, adjusting the temperature in the mixing drum to be 150 ℃, and then adding the plasticizer, the antioxidant, the surface modifier and the modified polyvinyl chloride resin for continuous stirring and mixing for 1 hour; after mixing for 1 hour, regulating the temperature in the mixer to 180-200 ℃ again, and adding silicate and carbon black into the mixer for mixing and stirring;
S2) plasticizing extrusion: regulating the temperature of plasticizing extrusion equipment to 210 ℃, and gradually heating, melting and extruding the mixture after the mixing in the step S1 under the rotation of a screw rod of a plasticizing extruder;
s3) extrusion molding: after the step S2 is completed, the temperature of the extruder head is regulated to 220 ℃, and then the materials are uniformly extruded and molded;
S4) cooling and solidifying: after the temperature of the cooling roller is controlled to be 20-35 ℃, the film is uniformly cooled by the cooling roller after finishing the step S3, so that the film formation and dimensional stability are maintained.
According to the operation of the steps, the raw materials in the PVC film processing process can be effectively mixed in a temperature control manner, and the quality of a finished product is enhanced after the raw materials are processed.
After each temperature adjustment in the step S1 is towards uniform temperature, corresponding raw materials are sequentially added.
And the extrusion heads in the steps S2 and S3 are provided with temperature control alarm equipment, so that the temperature during extrusion can be strictly controlled.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics 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.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The PVC film is characterized by comprising the following raw materials:
modified polyvinyl chloride resin;
A calcium-zinc based main stabilizer;
An epoxy auxiliary stabilizer;
A plasticizer;
An antioxidant;
A surface modifying agent.
2. The PVC film of claim 1, wherein: silicate and carbon black are also added.
3. The PVC film according to claim 1, wherein the raw materials comprise, in weight percent,
4. The PVC film of claim 1, wherein: the surface modifier is a graft polymer.
5. The PVC film of claim 1, wherein: the antioxidant is polyglycerol ester.
6. A process for the preparation of a PVC film according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
S1) mixing raw materials: after the temperature of a mixing drum in a mixer is controlled to be 160-200 ℃, firstly putting the modified polyvinyl chloride resin into the mixer for preliminary melt mixing, after 15min, adjusting the temperature in the mixing drum to be 150 ℃, and then adding the plasticizer, the antioxidant, the surface modifier and the modified polyvinyl chloride resin for continuous stirring and mixing for 1 hour; after mixing for 1 hour, regulating the temperature in the mixer to 180-200 ℃ again, and adding silicate and carbon black into the mixer for mixing and stirring;
S2) plasticizing extrusion: regulating the temperature of plasticizing extrusion equipment to 210 ℃, and gradually heating, melting and extruding the mixture after the mixing in the step S1 under the rotation of a screw rod of a plasticizing extruder;
s3) extrusion molding: after the step S2 is completed, the temperature of the extruder head is regulated to 220 ℃, and then the materials are uniformly extruded and molded;
S4) cooling and solidifying: after the temperature of the cooling roller is controlled to be 20-35 ℃, the film is uniformly cooled by the cooling roller after finishing the step S3, so that the film formation and dimensional stability are maintained.
7. The process for preparing a PVC film according to claim 6, wherein: after the temperature adjustment in the step S1 is carried out to be uniform, corresponding raw materials are sequentially added.
8. The process for preparing a PVC film according to claim 6, wherein: the extrusion heads of the steps S2 and S3 are provided with temperature control alarm equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410422345.XA CN118307910A (en) | 2024-04-09 | 2024-04-09 | PVC film and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410422345.XA CN118307910A (en) | 2024-04-09 | 2024-04-09 | PVC film and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118307910A true CN118307910A (en) | 2024-07-09 |
Family
ID=91730435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410422345.XA Pending CN118307910A (en) | 2024-04-09 | 2024-04-09 | PVC film and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118307910A (en) |
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2024
- 2024-04-09 CN CN202410422345.XA patent/CN118307910A/en active Pending
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