CN110878164A - PVC floor film with scratch self-repairing function and production process thereof - Google Patents
PVC floor film with scratch self-repairing function and production process thereof Download PDFInfo
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Abstract
The invention discloses a PVC floor film with scratch self-repairing function and a production process thereof, relating to the technical field of PVC film processing and being prepared from the following raw materials in parts by weight: 100-150 parts of PVC resin powder, 10-20 parts of nano filler, 10-20 parts of dioctyl terephthalate, 1-10 parts of fumed silica, 1-10 parts of dioctyl adipate, 1-10 parts of flame retardant and 0.5-5 parts of organic antimony stabilizer; the floor film prepared by the invention can basically disappear scratches after self-repairing for 48h at room temperature, and the self-repairing efficiency of the tensile strength reaches more than 95%, so that the use quality of the floor film is obviously improved, and the service life of the floor is prolonged.
Description
The technical field is as follows:
the invention relates to the technical field of PVC (polyvinyl chloride) film processing, in particular to a PVC floor film with a scratch self-repairing function and a production process thereof.
Background art:
the floor film is a packaging material widely applied in home decoration building materials at present, and is used for protecting the ground and protecting a finished floor from being damaged. The PVC floor film is a plastic decorative material, belongs to an economical floor material, and has the advantages of ultralightness, ultrathin property, wear resistance, scratch resistance, high elasticity, impact resistance, skid resistance, sound absorption, small joint, seamless welding, quick installation and construction, various colors and varieties and the like.
Since the floor film is exposed to a rubbing environment for a long time, scratches are easily generated, and the accumulation of scratches directly results in a reduction in service life. In order to solve the problem, the invention provides a PVC floor film with a scratch self-repairing function, which can self-repair scratches, prevent the accumulation of scratches from influencing the service quality of the floor film, and prolong the service life of the floor film.
The invention content is as follows:
the invention aims to provide a PVC floor film with a scratch self-repairing function and a production process thereof.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a PVC floor film with scratch self-repairing function is prepared from the following raw materials in parts by weight:
100-150 parts of PVC resin powder, 10-20 parts of nano filler, 10-20 parts of dioctyl terephthalate, 1-10 parts of fumed silica, 1-10 parts of dioctyl adipate, 1-10 parts of flame retardant and 0.5-5 parts of organic antimony stabilizer.
The flame retardant is selected from one or more of ammonium polyphosphate, pentaerythritol and melamine.
The nano filler is nano calcium carbonate.
The nano filler is prepared by modifying nano calcium carbonate, and the preparation method comprises the following steps: adding nano calcium carbonate into water, adding acrylamide, dimethyl magnesium acrylate and potassium persulfate after uniform dispersion, heating to a reflux state, carrying out heat preservation reaction, stopping heating after the acrylamide completely reacts, carrying out reduced pressure concentration to obtain a paste with the solid content of 70-80%, drying the paste, crushing the dried paste into micro powder, and finally grinding the micro powder to obtain the nano powder.
The molar weight of the nano calcium carbonate, the acrylamide, the dimethyl magnesium acrylate and the potassium persulfate is 5-15:1:1.1: 0.05-0.1.
The preparation principle of the nano-filler is as follows:
acrylamide and magnesium dimethacrylate are polymerized to generate a polymer under the action of an initiator, and the generated polymer is instantly fused into the structural pore canal of the nano calcium carbonate to form a nano filler of calcium carbonate and the polymer, so that the scratch self-repairing function of the prepared floor film is enhanced.
The production process of the PVC floor film comprises the following steps:
(1) mixing materials: adding all the raw materials into a high-speed stirrer, heating to 110-120 ℃ at a heating rate of 5-10 ℃/min, mixing at a high speed, cooling to 20-30 ℃ at a cooling rate of 5-10 ℃/min, and mixing at a high speed to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160 ℃ and 170 ℃, and then conveying the mixture into an open mill for open mixing at the temperature of 175 ℃ and 185 ℃;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder;
(5) rolling: the extruded material is sent to a calender to be pressed into a film.
The screw rotating speed of the screw extruder is 15-25r/min, and the temperature is respectively as follows: the first zone is 150-.
The calender is a four-roller calender, the upper roller temperature is 145-155 ℃, the front roller temperature is 145-155 ℃, the middle roller temperature is 135-145 ℃, the lower roller temperature is 130-140 ℃, the pressure is 20-30kg, and the speed is 10-15 m/min.
The invention has the beneficial effects that:
(1) according to the invention, the self-made nano filler replaces the conventional nano calcium carbonate filler to ensure the mechanical strength of the prepared floor film and enhance the scratch self-repairing capability of the prepared floor film, so that the prepared floor film has an excellent scratch self-repairing function;
(2) according to the invention, through the addition of quick freezing treatment in the preparation process of the floor film, the scratch self-repairing capability of the prepared floor film is further improved, so that the prepared floor film can complete self-repairing at room temperature, and the requirement on the self-repairing condition is greatly reduced;
(3) the floor film prepared by the invention can basically disappear scratches after self-repairing for 48h at room temperature, and the self-repairing efficiency of the tensile strength reaches more than 95%, so that the use quality of the floor film is obviously improved, and the service life of the floor is prolonged.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
Production of PVC floor films:
(1) mixing materials: adding 150g of PVC resin powder, 10g of nano calcium carbonate, 15g of dioctyl terephthalate, 10g of fumed silica, 10g of dioctyl adipate, 5g of pentaerythritol and 1g of organic antimony stabilizer into a high-speed stirrer, heating to 115-120 ℃ at a heating rate of 5 ℃/min, mixing at a high speed, cooling to 25-30 ℃ at a cooling rate of 5 ℃/min, mixing at a high speed of 800r/min to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160-165 ℃ for 5min, and then conveying the mixture into an open mill for open mixing at the temperature of 175-180 ℃ for 5 min;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder, wherein the rotating speed of a screw of the screw extruder is 20r/min, and the temperatures are respectively as follows: the first zone is 155-160 ℃, the second zone is 165-170 ℃, the third zone is 170-175 ℃, the fourth zone is 175-180 ℃, the fifth zone is 170-175 ℃, the head temperature is 170-175 ℃, and the filtering mesh number is 120 meshes;
(5) rolling: and (3) conveying the extruded material to a calender to be pressed into a film, wherein the calender is a four-roller calender, and the upper roller temperature is 145-150 ℃, the front roller temperature is 150-155 ℃, the middle roller temperature is 140-145 ℃, the lower roller temperature is 135-140 ℃, the pressure is 25kg, and the speed is 12 m/min.
Example 2
Production of PVC floor films:
(1) mixing materials: adding 150g of PVC resin powder, 15g of nano calcium carbonate, 20g of dioctyl terephthalate, 5g of fumed silica, 5g of dioctyl adipate, 5g of pentaerythritol and 1g of organic antimony stabilizer into a high-speed stirrer, heating to 115-120 ℃ at a heating rate of 5 ℃/min, mixing at a high speed, cooling to 25-30 ℃ at a cooling rate of 5 ℃/min, mixing at a high speed of 800r/min to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160-165 ℃ for 5min, and then conveying the mixture into an open mill for open mixing at the temperature of 175-180 ℃ for 5 min;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder, wherein the rotating speed of a screw of the screw extruder is 20r/min, and the temperatures are respectively as follows: the first zone is 155-160 ℃, the second zone is 165-170 ℃, the third zone is 170-175 ℃, the fourth zone is 175-180 ℃, the fifth zone is 170-175 ℃, the head temperature is 170-175 ℃, and the filtering mesh number is 120 meshes;
(5) rolling: and (3) conveying the extruded material to a calender to be pressed into a film, wherein the calender is a four-roller calender, and the upper roller temperature is 145-150 ℃, the front roller temperature is 150-155 ℃, the middle roller temperature is 140-145 ℃, the lower roller temperature is 135-140 ℃, the pressure is 25kg, and the speed is 12 m/min.
Example 3
In contrast to example 2, example 3 was set up with the home-made nano-filler replacing the nano-calcium carbonate.
Production of PVC floor films:
(1) mixing materials: adding 150g of PVC resin powder, 15g of nano filler, 20g of dioctyl terephthalate, 5g of fumed silica, 5g of dioctyl adipate, 5g of pentaerythritol and 1g of organic antimony stabilizer into a high-speed stirrer, heating to 115-120 ℃ at a heating rate of 5 ℃/min, mixing at a high speed, cooling to 25-30 ℃ at a cooling rate of 5 ℃/min, mixing at a high speed of 800r/min to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160-165 ℃ for 5min, and then conveying the mixture into an open mill for open mixing at the temperature of 175-180 ℃ for 5 min;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder, wherein the rotating speed of a screw of the screw extruder is 20r/min, and the temperatures are respectively as follows: the first zone is 155-160 ℃, the second zone is 165-170 ℃, the third zone is 170-175 ℃, the fourth zone is 175-180 ℃, the fifth zone is 170-175 ℃, the head temperature is 170-175 ℃, and the filtering mesh number is 120 meshes;
(5) rolling: and (3) conveying the extruded material to a calender to be pressed into a film, wherein the calender is a four-roller calender, and the upper roller temperature is 145-150 ℃, the front roller temperature is 150-155 ℃, the middle roller temperature is 140-145 ℃, the lower roller temperature is 135-140 ℃, the pressure is 25kg, and the speed is 12 m/min.
Preparing the nano filler: adding 15mol of nano calcium carbonate into water, adding 1mol of acrylamide, 1.1mol of magnesium dimethacrylate and 0.05mol of potassium persulfate after uniform dispersion, heating to a reflux state, carrying out heat preservation reaction, stopping heating after the acrylamide completely reacts, carrying out reduced pressure concentration to obtain a paste with the solid content of 75-80%, drying the paste, crushing the dried paste into micro powder, and finally grinding the micro powder to obtain nano powder.
Example 4
By contrast to example 2, example 4 in which the nano calcium carbonate is replaced by the self-made nano filler is set, and example 4 is different from example 3 in the amount of raw materials for preparing the nano calcium carbonate.
Production of PVC floor films:
(1) mixing materials: adding 150g of PVC resin powder, 15g of nano filler, 20g of dioctyl terephthalate, 5g of fumed silica, 5g of dioctyl adipate, 5g of pentaerythritol and 1g of organic antimony stabilizer into a high-speed stirrer, heating to 115-120 ℃ at a heating rate of 5 ℃/min, mixing at a high speed, cooling to 25-30 ℃ at a cooling rate of 5 ℃/min, mixing at a high speed of 800r/min to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160-165 ℃ for 5min, and then conveying the mixture into an open mill for open mixing at the temperature of 175-180 ℃ for 5 min;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder, wherein the rotating speed of a screw of the screw extruder is 20r/min, and the temperatures are respectively as follows: the first zone is 155-160 ℃, the second zone is 165-170 ℃, the third zone is 170-175 ℃, the fourth zone is 175-180 ℃, the fifth zone is 170-175 ℃, the head temperature is 170-175 ℃, and the filtering mesh number is 120 meshes;
(5) rolling: and (3) conveying the extruded material to a calender to be pressed into a film, wherein the calender is a four-roller calender, and the upper roller temperature is 145-150 ℃, the front roller temperature is 150-155 ℃, the middle roller temperature is 140-145 ℃, the lower roller temperature is 135-140 ℃, the pressure is 25kg, and the speed is 12 m/min.
Preparing the nano filler: adding 10mol of nano calcium carbonate into water, adding 1mol of acrylamide, 1.1mol of magnesium dimethacrylate and 0.05mol of potassium persulfate after uniform dispersion, heating to a reflux state, carrying out heat preservation reaction, stopping heating after the acrylamide completely reacts, carrying out reduced pressure concentration to obtain a paste with the solid content of 75-80%, drying the paste, crushing the dried paste into micro powder, and finally grinding the micro powder to obtain nano powder.
Comparative example 1
Comparative example 1 in which the gum was not subjected to the rapid freezing treatment was prepared by using example 1 as a control.
Production of PVC floor films:
(1) mixing materials: adding 150g of PVC resin powder, 10g of nano calcium carbonate, 15g of dioctyl terephthalate, 10g of fumed silica, 10g of dioctyl adipate, 5g of pentaerythritol and 1g of organic antimony stabilizer into a high-speed stirrer, heating to 115-120 ℃ at a heating rate of 5 ℃/min, mixing at a high speed, cooling to 25-30 ℃ at a cooling rate of 5 ℃/min, mixing at a high speed of 800r/min to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160-165 ℃ for 5min, and then conveying the mixture into an open mill for open mixing at the temperature of 175-180 ℃ for 5 min;
(3) and (3) filtering: extruding and filtering the rubber material obtained by open milling by an extruder, wherein the rotating speed of a screw of the screw extruder is 20r/min, and the temperature is respectively as follows: the first zone is 155-160 ℃, the second zone is 165-170 ℃, the third zone is 170-175 ℃, the fourth zone is 175-180 ℃, the fifth zone is 170-175 ℃, the head temperature is 170-175 ℃, and the filtering mesh number is 120 meshes;
(4) rolling: and (3) conveying the extruded material to a calender to be pressed into a film, wherein the calender is a four-roller calender, and the upper roller temperature is 145-150 ℃, the front roller temperature is 150-155 ℃, the middle roller temperature is 140-145 ℃, the lower roller temperature is 135-140 ℃, the pressure is 25kg, and the speed is 12 m/min.
Comparative example 2
In contrast to example 4, comparative example 2 was set up with nanofillers replaced by a mixture of nano calcium carbonate, acrylamide and magnesium dimethacrylate.
Production of PVC floor films:
(1) mixing materials: adding 150g of PVC resin powder, 15g of nano filler, 20g of dioctyl terephthalate, 5g of fumed silica, 5g of dioctyl adipate, 5g of pentaerythritol and 1g of organic antimony stabilizer into a high-speed stirrer, heating to 115-120 ℃ at a heating rate of 5 ℃/min, mixing at a high speed, cooling to 25-30 ℃ at a cooling rate of 5 ℃/min, mixing at a high speed of 800r/min to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160-165 ℃ for 5min, and then conveying the mixture into an open mill for open mixing at the temperature of 175-180 ℃ for 5 min;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder, wherein the rotating speed of a screw of the screw extruder is 20r/min, and the temperatures are respectively as follows: the first zone is 155-160 ℃, the second zone is 165-170 ℃, the third zone is 170-175 ℃, the fourth zone is 175-180 ℃, the fifth zone is 170-175 ℃, the head temperature is 170-175 ℃, and the filtering mesh number is 120 meshes;
(5) rolling: and (3) conveying the extruded material to a calender to be pressed into a film, wherein the calender is a four-roller calender, and the upper roller temperature is 145-150 ℃, the front roller temperature is 150-155 ℃, the middle roller temperature is 140-145 ℃, the lower roller temperature is 135-140 ℃, the pressure is 25kg, and the speed is 12 m/min.
Preparing the nano filler: is prepared by mixing 10mol of nano calcium carbonate, 1mol of acrylamide and 1.1mol of magnesium dimethacrylate.
PVC floor films with the thickness of 2mm are processed and produced by utilizing the examples 1-4 and the comparative examples 1-2 respectively, and the scratch self-repairing capability of the prepared PVC floor films is tested.
The PVC floor film was cut into a test piece having a length of 100mm and a width of 15 mm. The scratch tester of Switzerland CSM company is adopted, and the test conditions are as follows: the curvature radius of the tip of the diamond pressure head is 0.2mm, the cone angle is 120 degrees, the scratch speed is 5mm/min, the loading rate is 100N/min, the scratch length is 5mm, and the scratch can be automatically repaired for 48 hours at 25 ℃ after being generated.
Test specimens for tensile strength A before scratch production according to ASTM D882-20121And tensile strength A after scratch repair2And calculating the self-repairing efficiency of the tensile strength, wherein the calculation formula is A2/A1。
Table 1 self-healing efficiency of flooring films made in the examples
| Group of | A1/MPa | A2/MPa | Self-repair efficiency/%) |
| Example 1 | 28.7 | 26.4 | 91.99 |
| Example 2 | 29.1 | 26.9 | 92.44 |
| Example 3 | 28.7 | 27.3 | 95.12 |
| Example 4 | 28.9 | 27.8 | 96.19 |
| Comparative example 1 | 26.4 | 22.5 | 85.23 |
| Comparative example 2 | 27.5 | 23.9 | 86.91 |
As can be seen from Table 1, the preparation and use of the nano-filler and the application of the rapid freezing treatment can obtain the technical effect of remarkably improving the self-repairing efficiency of the prepared floor film.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a PVC floor film with mar self repair function which characterized in that: the feed is prepared from the following raw materials in parts by weight:
100-150 parts of PVC resin powder, 10-20 parts of nano filler, 10-20 parts of dioctyl terephthalate, 1-10 parts of fumed silica, 1-10 parts of dioctyl adipate, 1-10 parts of flame retardant and 0.5-5 parts of organic antimony stabilizer.
2. The PVC flooring film with scratch self-repair function according to claim 1, wherein: the flame retardant is selected from one or more of ammonium polyphosphate, pentaerythritol and melamine.
3. The PVC flooring film with scratch self-repair function according to claim 1, wherein: the nano filler is nano calcium carbonate.
4. The process for producing a PVC flooring film having a scratch self-repair function according to claim 1, wherein: the method comprises the following steps:
(1) mixing materials: adding all the raw materials into a high-speed stirrer, heating to 110-120 ℃ at a heating rate of 5-10 ℃/min, mixing at a high speed, cooling to 20-30 ℃ at a cooling rate of 5-10 ℃/min, and mixing at a high speed to obtain a mixture;
(2) plasticizing: conveying the mixture into an internal mixer for internal mixing at the temperature of 160 ℃ and 170 ℃, and then conveying the mixture into an open mill for open mixing at the temperature of 175 ℃ and 185 ℃;
(3) freezing: transferring the rubber material obtained by open milling into an environment with the temperature of minus 5-0 ℃ for quick freezing treatment;
(4) and (3) filtering: extruding and filtering the frozen rubber material by an extruder;
(5) rolling: the extruded material is sent to a calender to be pressed into a film.
5. The process for producing a PVC flooring film with scratch self-repair function according to claim 4, wherein: the screw rotating speed of the screw extruder is 15-25r/min, and the temperature is respectively as follows: the first zone is 150-.
6. The process for producing a PVC flooring film with scratch self-repair function according to claim 4, wherein: the calender is a four-roller calender, the upper roller temperature is 145-155 ℃, the front roller temperature is 145-155 ℃, the middle roller temperature is 135-145 ℃, the lower roller temperature is 130-140 ℃, the pressure is 20-30kg, and the speed is 10-15 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910513028.8A CN110878164A (en) | 2019-06-14 | 2019-06-14 | PVC floor film with scratch self-repairing function and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910513028.8A CN110878164A (en) | 2019-06-14 | 2019-06-14 | PVC floor film with scratch self-repairing function and production process thereof |
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| CN111925605A (en) * | 2020-07-23 | 2020-11-13 | 安徽嘉阳新材料科技有限公司 | PVC hard floor film and processing technology thereof |
| RU2779275C1 (en) * | 2022-02-07 | 2022-09-05 | Общество с ограниченной ответственностью "НФГрупп" | Method for producing polyvinyl chloride decorative film for furniture and vinyl floor coverings with a protective layer |
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| RU2779275C1 (en) * | 2022-02-07 | 2022-09-05 | Общество с ограниченной ответственностью "НФГрупп" | Method for producing polyvinyl chloride decorative film for furniture and vinyl floor coverings with a protective layer |
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Inventor after: Zhu Jiachen Inventor after: Chen Jianhua Inventor after: Zhu Jin Inventor after: Xiao Dianye Inventor before: Xiao Dianye Inventor before: Rao Baodong Inventor before: Huang Jitao Inventor before: Xiao Dianfei |
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Application publication date: 20200313 |