CN114276575B - Plate layer frosted PVC sheet and preparation method thereof - Google Patents
Plate layer frosted PVC sheet and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of plastic sheets, in particular to a plate layer frosted PVC sheet and a preparation method thereof, the plate layer frosted PVC sheet comprises a PVC substrate film, a printing ink printing layer, a frosting layer and a scratch-resistant reinforced coating which are sequentially bonded, the frosting layer is formed by spraying a frosting material with a wear-resistant layer and cold-pressing frosting, and the frosting material with a wear-resistant layer comprises the following components: polypropylene, low-density polyethylene, polylactic acid, graft modified cassava starch, modified nano silicon dioxide, modified nano calcium carbonate, a compatilizer, a plasticizer, a heat stabilizer and an antioxidant. The PVC substrate film, the printing ink printing layer, the frosting layer and the scratch-resistant strengthening coating are sequentially bonded, the frosting layer is the wear-resistant frosting coating, the frosting texture and the soft light photosensitive effect which is lack of the existing bright PVC sheet are achieved, the wear-resistant effect can also be achieved, the wear resistance and the pollution resistance of the plate layer frosting PVC sheet are further improved under the strengthening effect of the scratch-resistant strengthening coating, and the service life of the plate layer frosting PVC sheet is prolonged.
Description
Technical Field
The invention relates to the technical field of plastic sheets, in particular to a plate layer frosted PVC sheet and a preparation method thereof.
Background
The plastic sheet is a plastic coil with a thickness of about 0.25-1.00mm which is extruded or calendered after plastic raw materials (particles) are heated and melted in a plastic extruder or plastic calender.
The existing PVC sheets are mostly bright, the requirements of consumers cannot be met, scratches and abrasion are easily generated on the surfaces of the PVC sheets in the using process, the quality problem is caused, and the service life of the PVC sheets is easily reduced.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the plate layer frosted PVC sheet, wherein a PVC substrate film, a printing ink printing layer, a frosting layer and a scratch-resistant strengthening coating are sequentially bonded, and the frosting layer is a wear-resistant frosting coating, so that not only is the frosting texture and the soft light photosensitive effect which is lacked by the existing bright PVC sheet achieved, but also the wear-resistant effect can be achieved, the wear resistance and the stain resistance of the plate layer frosted PVC sheet are further improved under the strengthening effect of the scratch-resistant strengthening coating, and the service life of the plate layer frosted PVC sheet is prolonged.
The invention also aims to provide a preparation method of the plate layer frosted PVC sheet, which has the advantages of simple operation, convenient control, high production efficiency and low production cost and can be used for large-scale production.
The purpose of the invention is realized by the following technical scheme: the utility model provides a dull polish PVC sheet of bed, is including PVC substrate film, printing ink printing layer, dull polish layer and the enhancement coating of resistant scraping that bonds in proper order, the dull polish layer drenches the membrane, colding pressing the dull polish by wear-resisting dull polish material and forms, wear-resisting dull polish material includes the composition of following parts by weight:
according to the plate layer frosted PVC sheet, the PVC substrate film, the printing ink printing layer, the frosting layer and the scratch-resistant strengthening coating are sequentially bonded, and the frosting layer is the wear-resistant frosting coating, so that not only are the frosting texture achieved and the soft light photosensitive effect which is lacked by the existing bright PVC sheet achieved, but also the wear-resistant effect can be achieved, the wear resistance and the stain resistance of the plate layer frosting PVC sheet are further improved under the strengthening effect of the scratch-resistant strengthening coating, and the service life of the plate layer frosting PVC sheet is prolonged. The wear-resistant abrasive material adopts polypropylene, low-density polyethylene and polylactic acid as main resins, ensures that the wear-resistant abrasive material has enough adhesive force after being coated and is combined with an ink printing layer on a PVC (polyvinyl chloride) base material film, is convenient for the degradation of the abrasive layer after the sheet is discarded due to the addition of the polylactic acid and the graft modified tapioca starch, improves the wear resistance, the dirt resistance and the toughness of the abrasive layer and ensures the transparency and the surface gloss of the abrasive layer, and the addition of the graft modified tapioca starch can not only keep certain toughness but also reduce the cost of raw materials. The scratch-resistant reinforced coating is formed by coating and drying a two-component waterborne polyurethane scratch-resistant wear-resistant PVC coating in example 1 with the patent application number of 202110892383.8.
Further, the wear-resistant abrasive material is prepared by mixing polypropylene, low-density polyethylene, polylactic acid, graft modified tapioca starch, modified nano-silica, modified nano-calcium carbonate, a compatilizer, a plasticizer, a heat stabilizer and an antioxidant in parts by weight, and then performing melt extrusion granulation at 190-210 ℃ by using a double-screw extruder.
Preferably, the polypropylene has a density of 0.90-0.93g/cm 3 And a copolymerized polypropylene having a melt flow rate of 8 to 15g/10min at 230 ℃/2.16kg load.
By adopting the technical scheme, the coating has high transparency, chemical resistance, heat resistance, high-strength mechanical property and good high-wear-resistance processing property.
Preferably, the low density polyethylene has a melt index of 1.5 to 2.5g/10min and a density of 0.918 to 0.928g/cm 3 。
By adopting the technical scheme, the high-transparency high-flexibility low-temperature-resistant heat-sealing material has high transparency, good heat-sealing property and forming processability, good flexibility, and good impact toughness and low temperature resistance.
Preferably, the preparation method of each part of the grafted and modified cassava starch comprises the following steps:
(R1) taking 100 parts of cassava starch, 0.01-0.02 part of phosphorus oxychloride, 2-8 parts of sodium chloride and 120-150 parts of water by weight for later use;
(R2) uniformly mixing the cassava starch, sodium chloride and water, adding an alkalinity regulator to regulate the pH value to 9.0-10.0, then adding phosphorus oxychloride at the temperature of 45-55 ℃, reacting for 40-60min, and then sequentially performing carbonation neutralization, washing, drying and crushing to obtain the graft modified cassava starch.
By adopting the technical scheme, the obtained graft modified cassava starch has the crosslinking degree of 32-40 percent and higher crosslinking degree, improves the compatibility of the graft modified cassava starch in a system, maintains the mechanical property of a frosted layer, saves the raw material cost for producing the frosted layer, can obtain the graft modified cassava starch with higher crosslinking degree by crosslinking at the temperature of 45-55 ℃ and the pH value of 9.0-10.0, keeps good whiteness, avoids gelatinization of the cassava starch and avoids influencing the sensory effect of the frosted layer. The added sodium chloride promotes the dissolution of the cassava starch, shortens the mixing time, improves the production efficiency and enables the reaction to be more uniform and effective; on the other hand, the cassava starch and the phosphorus oxychloride are promoted to carry out slight crosslinking reaction together with the alkalinity regulator at room temperature, so that the reaction process is facilitated.
Preferably, the alkalinity regulator is sodium hydroxide aqueous solution with the concentration of 3-5 wt%; the carbonic acid is saturated carbonic acid water solution.
By adopting the technical scheme, the pH value can be adjusted to 9.0-10.0 by adding a small amount of sodium hydroxide aqueous solution with the concentration of 3-5 wt%. The neutralization reaction of the carbonic acid and the alkalinity regulator is utilized to stop the cassava starch to continue to carry out the mild crosslinking reaction, compared with the hydrochloric acid, the strong permeability of chloride ions is avoided, the abrasion resistance effect of the grafted modified cassava starch and the frosted layer is not influenced, and the influence of the added carbonic acid on the system is small.
Preferably, the modified nano-silica is dried after being soaked in a hydrogen-containing silane coupling agent aqueous solution for 24 hours; the modified nano calcium carbonate is dried after being soaked in a hydrogen-containing silane coupling agent aqueous solution for 24 hours.
By adopting the technical scheme, the modified nano-silica and the modified nano-calcium carbonate can be improved in dispersibility in a system by soaking in the hydrogen-containing silane coupling agent aqueous solution for 24 hours and then drying, so that the light transmittance and the surface gloss of a frosted layer are improved, and the frosted effect is better. More preferably, the hydrogen-containing silane coupling agent is trimethoxysilane or methyldimethoxysilane.
Preferably, the compatibilizer is an ethylene-acrylate-glycidyl acrylate terpolymer.
By adopting the technical scheme, the ethylene chain segment in the compatilizer is intertwined with the low-density polyethylene molecular chain and the polypropylene molecular chain, the epoxy group in the glycidyl acrylate chain segment in the compatilizer reacts with the terminal carboxyl or the terminal hydroxyl of the polylactic acid, and the interaction force is increased, so that the compatibility of the polylactic acid, the low-density polyethylene molecular chain and the polypropylene is promoted, and the function of the resin is fully exerted. More preferably, the compatibilizing agent is selected from AX8900.
Preferably, the plasticizer is at least one of polyethylene glycol, tributyl citrate or dioctyl terephthalate.
By adopting the technical scheme, the ductility, plasticity and flexibility of the system are increased, the processing performance is improved, and the spraying operation of the wear-resistant abrasive material is facilitated.
Preferably, the heat stabilizer is S9228 or S9228T; the antioxidant is antioxidant 1010 or antioxidant 1098.
By adopting the technical scheme, the thermal stability and the oxygen resistance of the system are improved, the decomposition rate of polypropylene, low-density polyethylene, polylactic acid and graft modified cassava starch under high-temperature melting is reduced, and the service life is prolonged.
The other purpose of the invention is realized by the following technical scheme: the preparation method of the laminated frosted PVC sheet comprises the following steps:
(S1) taking a PVC (polyvinyl chloride) substrate film, printing ink, a wear-resistant abrasive material and a scratch-resistant reinforced coating for later use;
(S2) coating printing ink on one surface of the PVC base material film, and forming an ink printing layer on one surface of the PVC base material film after drying;
(S3) after the surface of the printing ink printing layer is coated with the wear-resistant frosting material, the printing ink printing layer passes through a cooling pressing roller and a frosting roller, so that the wear-resistant frosting material is cooled to obtain frosted texture, and a frosted layer is formed;
and (S4) coating a scratch-resistant reinforced coating on the surface of the frosted layer, and drying to form a scratch-resistant reinforced coating to obtain the plate layer frosted PVC sheet.
The invention has the beneficial effects that: according to the laminated frosted PVC sheet, the PVC base material film, the printing ink printing layer, the frosting layer and the scratch-resistant strengthening coating are sequentially bonded, and the frosting layer is the wear-resistant frosting coating, so that the frosting texture and the soft light photosensitive effect which is lacked by the existing bright PVC sheet are achieved, the wear-resistant effect can be achieved, the wear resistance and the pollution resistance of the laminated frosted PVC sheet are further improved under the strengthening effect of the scratch-resistant strengthening coating, and the service life of the laminated frosted PVC sheet is prolonged. The wear-resistant abrasive material adopts polypropylene, low-density polyethylene and polylactic acid as main resin, ensures that the wear-resistant abrasive material has enough adhesive force after being coated and is combined with an ink printing layer on a PVC (polyvinyl chloride) base material film, is convenient for the sheet to be discarded after the polylactic acid and the graft modified tapioca starch are added, is more favorable for the degradation of the abrasive layer, improves the wear resistance, the dirt resistance and the toughness of the abrasive layer, ensures the transparency and the surface gloss of the abrasive layer, and can keep certain toughness and reduce the cost of raw materials by adding the graft modified tapioca starch.
The preparation method of the laminated frosted PVC sheet is simple to operate, convenient to control, high in production efficiency and low in production cost, and can be used for large-scale production.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
The utility model provides a bed dull polish PVC sheet, is including adhesive transparent PVC substrate membrane, printing ink printing layer, dull polish layer and resistant scraping intensive coating in proper order, the dull polish layer is drenched the membrane by wear-resisting dull polish material, is colded pressing the dull polish and formed, wear-resisting dull polish material includes the composition of following parts by weight:
the preparation method of the wear-resistant abrasive material comprises the steps of mixing polypropylene, low-density polyethylene, polylactic acid, grafted modified tapioca starch, modified nano-silica, modified nano-calcium carbonate, a compatilizer, a plasticizer, a heat stabilizer and an antioxidant in parts by weight, and then performing melt extrusion granulation by using a double-screw extruder to obtain the wear-resistant abrasive material, wherein the screw rotating speed of the double-screw extruder is 100r/min, and the length-diameter ratio of the double-screw extruder is 25; the first zone temperature of the twin-screw extruder is 192 ℃, the second zone temperature is 197 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 198 ℃, and the die head temperature is 192 ℃. The scratch-resistant reinforced coating is formed by coating and drying a two-component waterborne polyurethane scratch-resistant wear-resistant PVC coating in example 1 with the patent application number of 202110892383.8.
The density of the polypropylene is 0.92g/cm 3 And a melt flow rate of 12g/10min at 230 ℃/2.16kg load.
The low density polyethylene has a melt index of 2g/10min and a density of 0.920g/cm 3 。
The preparation method of each part of the grafted modified cassava starch comprises the following steps:
(R1) taking 100 parts by weight of cassava starch, 0.015 part by weight of phosphorus oxychloride, 4 parts by weight of sodium chloride and 130 parts by weight of water for later use;
(R2) uniformly mixing the cassava starch, sodium chloride and water, adding a 4wt% sodium hydroxide aqueous solution to adjust the pH value to 9.0, then adding phosphorus oxychloride at the temperature of 50 ℃, reacting for 50min, and then sequentially neutralizing, washing, drying and crushing the saturated carbonic acid aqueous solution to obtain the grafted modified cassava starch.
The modified nano silicon dioxide is dried after being soaked in 5wt% trimethoxy silane-water solution for 24 hours; the modified nano calcium carbonate is dried after being soaked in a 5wt% trimethoxy silane-water solution for 24 hours.
The plasticizer is polyethylene glycol.
The heat stabilizer is S9228; the antioxidant is antioxidant 1010.
The preparation method of the plate layer frosted PVC sheet comprises the following steps:
(S1) taking a transparent PVC (polyvinyl chloride) substrate film, printing ink, a wear-resistant abrasive material and a scratch-resistant reinforced coating for later use;
(S2) coating printing ink on one surface of the transparent PVC base material film, and forming an ink printing layer on one surface of the transparent PVC base material film after drying;
(S3) after the wear-resistant abrasive material is coated on the surface of the ink printing layer, the ink printing layer penetrates through a cooling pressing roller and a frosting roller, so that the wear-resistant abrasive material is cooled and frosted to obtain a frosted texture, and a frosted layer is formed;
and (S4) coating a scratch-resistant reinforced coating on the surface of the frosted layer, and drying to form a scratch-resistant reinforced coating to obtain the plate layer frosted PVC sheet.
Example 2
The utility model provides a dull polish PVC sheet of bed, is including adhesive transparent PVC substrate membrane, printing ink printing layer, dull polish layer and the enhancement coating of resistant scraping in proper order, the dull polish layer is drenched the membrane by wear-resisting dull polish material, is colded pressing the dull polish and forms, wear-resisting dull polish material includes the composition of following part by weight:
the preparation method of the wear-resistant abrasive material comprises the steps of mixing polypropylene, low-density polyethylene, polylactic acid, grafted modified tapioca starch, modified nano-silica, modified nano-calcium carbonate, a compatilizer, a plasticizer, a heat stabilizer and an antioxidant in parts by weight, and then carrying out melt extrusion granulation by a double-screw extruder to obtain the wear-resistant abrasive material, wherein the screw rotating speed of the double-screw extruder is 100r/min, and the length-diameter ratio of the double-screw extruder is 20; the temperature of the first zone of the double-screw extruder is 190 ℃, the temperature of the second zone is 195 ℃, the temperature of the third zone is 200 ℃, the temperature of the fourth zone is 195 ℃ and the temperature of the die head is 190 ℃. The scratch-resistant reinforced coating is formed by coating and drying a two-component waterborne polyurethane scratch-resistant wear-resistant PVC coating in the embodiment 1 with the patent application number of 202110892383.8.
The density of the polypropylene is 0.90g/cm 3 And a copolymerized polypropylene having a melt flow rate of 8g/10min at 230 ℃/2.16kg load.
The low density polyethylene has a melt index of 1.5g/10min and a density of 0.918g/cm 3 。
The preparation method of each part of the grafted modified cassava starch comprises the following steps:
(R1) taking 100 parts of cassava starch, 0.01 part of phosphorus oxychloride, 2 parts of sodium chloride and 120 parts of water in parts by weight for later use;
(R2) uniformly mixing the cassava starch, sodium chloride and water, adding a 3wt% sodium hydroxide aqueous solution to adjust the pH value to 9.0, then adding phosphorus oxychloride at the temperature of 45 ℃, reacting for 40min, and then sequentially neutralizing, washing, drying and crushing the saturated carbonic acid aqueous solution to obtain the graft modified cassava starch.
The modified nano silicon dioxide is prepared by soaking the modified nano silicon dioxide in a trimethoxy silane-water solution with the concentration of 5wt% for 24 hours and then drying; the modified nano calcium carbonate is prepared by soaking the nano calcium carbonate in a 5wt% trimethoxy silane-water solution for 24 hours and then drying the nano calcium carbonate.
The plasticizer is tributyl citrate.
The heat stabilizer is S9228; the antioxidant is 1010.
The preparation method of the plate layer frosted PVC sheet comprises the following steps:
(S1) taking a transparent PVC (polyvinyl chloride) substrate film, printing ink, a wear-resistant abrasive material and a scratch-resistant reinforced coating for later use;
(S2) coating printing ink on one surface of the transparent PVC base material film, and forming an ink printing layer on one surface of the transparent PVC base material film after drying;
(S3) after the wear-resistant abrasive material is coated on the surface of the ink printing layer, the ink printing layer penetrates through a cooling pressing roller and a frosting roller, so that the wear-resistant abrasive material is cooled and frosted to obtain a frosted texture, and a frosted layer is formed;
and (S4) coating a scratch-resistant reinforced coating on the surface of the frosted layer, and drying to form a scratch-resistant reinforced coating, thereby obtaining the frosted PVC sheet of the plate layer.
Example 3
The utility model provides a dull polish PVC sheet of bed, is including adhesive transparent PVC substrate membrane, printing ink printing layer, dull polish layer and the enhancement coating of resistant scraping in proper order, the dull polish layer is drenched the membrane by wear-resisting dull polish material, is colded pressing the dull polish and forms, wear-resisting dull polish material includes the composition of following part by weight:
the preparation method of the wear-resistant abrasive material comprises the steps of mixing polypropylene, low-density polyethylene, polylactic acid, grafted modified tapioca starch, modified nano-silica, modified nano-calcium carbonate, a compatilizer, a plasticizer, a heat stabilizer and an antioxidant in parts by weight, and then carrying out melt extrusion granulation by a double-screw extruder to obtain the wear-resistant abrasive material, wherein the screw rotating speed of the double-screw extruder is 100r/min, and the length-diameter ratio of the double-screw extruder is 30; the first zone temperature of the double-screw extruder is 195 ℃, the second zone temperature is 200 ℃, the third zone temperature is 210 ℃, the fourth zone temperature is 200 ℃ and the die head temperature is 195 ℃. The scratch-resistant reinforced coating is formed by coating and drying a two-component waterborne polyurethane scratch-resistant wear-resistant PVC coating in the embodiment 1 with the patent application number of 202110892383.8.
The density of the polypropylene is 0.93g/cm 3 And inA copolymerized polypropylene having a melt flow rate of 15g/10min under a load of 230 ℃/2.16 kg.
The low density polyethylene has a melt index of 2.5g/10min and a density of 0.928g/cm 3 。
The preparation method of each part of the grafted modified cassava starch comprises the following steps:
(R1) taking 100 parts of cassava starch, 0.02 part of phosphorus oxychloride, 8 parts of sodium chloride and 150 parts of water in parts by weight for later use;
(R2) uniformly mixing the cassava starch, sodium chloride and water, adding a 5wt% sodium hydroxide aqueous solution to adjust the pH value to 10.0, then adding phosphorus oxychloride at the temperature of 55 ℃, reacting for 60min, and then sequentially neutralizing, washing, drying and crushing the saturated carbonic acid aqueous solution to obtain the graft modified cassava starch.
The modified nano silicon dioxide is prepared by soaking the modified nano silicon dioxide in a trimethoxy silane-water solution with the concentration of 5wt% for 24 hours and then drying; the modified nano calcium carbonate is dried after being soaked in a 5wt% trimethoxy silane-water solution for 24 hours.
The plasticizer is dioctyl terephthalate.
The heat stabilizer is S9228T; the antioxidant is antioxidant 1098.
The preparation method of the plate layer frosted PVC sheet comprises the following steps:
(S1) taking a transparent PVC (polyvinyl chloride) substrate film, printing ink, a wear-resistant abrasive material and a scratch-resistant reinforced coating for later use;
(S2) coating printing ink on one surface of the transparent PVC base material film, and forming an ink printing layer on one surface of the transparent PVC base material film after drying;
(S3) after the wear-resistant abrasive material is coated on the surface of the ink printing layer, the ink printing layer penetrates through a cooling pressing roller and a frosting roller, so that the wear-resistant abrasive material is cooled and frosted to obtain a frosted texture, and a frosted layer is formed;
and (S4) coating a scratch-resistant reinforced coating on the surface of the frosted layer, and drying to form a scratch-resistant reinforced coating to obtain the plate layer frosted PVC sheet.
Example 4
The utility model provides a bed dull polish PVC sheet, is including adhesive transparent PVC substrate membrane, printing ink printing layer, dull polish layer and resistant scraping intensive coating in proper order, the dull polish layer is drenched the membrane by wear-resisting dull polish material, is colded pressing the dull polish and formed, wear-resisting dull polish material includes the composition of following parts by weight:
the preparation method of the wear-resistant abrasive material comprises the steps of mixing polypropylene, low-density polyethylene, polylactic acid, grafted modified tapioca starch, modified nano-silica, modified nano-calcium carbonate, a compatilizer, a plasticizer, a heat stabilizer and an antioxidant in parts by weight, and then carrying out melt extrusion granulation by a double-screw extruder to obtain the wear-resistant abrasive material, wherein the screw rotating speed of the double-screw extruder is 100r/min, and the length-diameter ratio of the double-screw extruder is 27; the first zone temperature of the double-screw extruder is 192 ℃, the second zone temperature is 199 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 198 ℃, and the die head temperature is 192 ℃. The scratch-resistant reinforced coating is formed by coating and drying a two-component waterborne polyurethane scratch-resistant wear-resistant PVC coating in the embodiment 1 with the patent application number of 202110892383.8.
The density of the polypropylene is 0.91g/cm 3 And a melt flow rate of 13g/10min at 230 ℃/2.16kg load.
The low-density polyethylene has a melt index of 2.3g/10min and a density of 0.923g/cm 3 。
The preparation method of each part of the grafted modified cassava starch comprises the following steps:
(R1) taking 100 parts of cassava starch, 0.018 parts of phosphorus oxychloride, 4 parts of sodium chloride and 130 parts of water by weight for later use;
(R2) uniformly mixing the cassava starch, sodium chloride and water, adding a 4wt% sodium hydroxide aqueous solution to adjust the pH value to 10.0, then adding phosphorus oxychloride at the temperature of 52 ℃, reacting for 55min, and then sequentially neutralizing, washing, drying and crushing the saturated carbonic acid aqueous solution to obtain the grafted modified cassava starch.
The modified nano silicon dioxide is dried after being soaked in 5wt% trimethoxy silane-water solution for 24 hours; the modified nano calcium carbonate is dried after being soaked in a 5wt% trimethoxy silane-water solution for 24 hours.
The plasticizer is polyethylene glycol and tributyl citrate according to the weight ratio of 1:1 and mixing.
The heat stabilizer is S9228; the antioxidant is antioxidant 1098.
The preparation method of the laminated frosted PVC sheet comprises the following steps:
(S1) taking a transparent PVC (polyvinyl chloride) substrate film, printing ink, a wear-resistant abrasive material and a scratch-resistant reinforced coating for later use;
(S2) coating printing ink on one surface of the transparent PVC base material film, and forming an ink printing layer on one surface of the transparent PVC base material film after drying;
(S3) after the wear-resistant abrasive material is coated on the surface of the ink printing layer, the ink printing layer penetrates through a cooling pressing roller and a frosting roller, so that the wear-resistant abrasive material is cooled and frosted to obtain a frosted texture, and a frosted layer is formed;
and (S4) coating a scratch-resistant reinforced coating on the surface of the frosted layer, and drying to form a scratch-resistant reinforced coating to obtain the plate layer frosted PVC sheet.
Comparative example 1
This comparative example differs from example 1 in that:
the grafted and modified cassava starch is replaced by thermoplastic starch EcoCyco (TM).
Comparative example 2
This comparative example differs from example 1 in that:
the compatilizer is PE-g-MAH.
Comparative example 3
This comparative example differs from example 1 in that:
in the preparation method of the grafted and modified cassava starch, the reaction temperature is controlled at 30 ℃.
Comparative example 4
This comparative example differs from example 1 in that:
the modified nano silicon dioxide is replaced by nano silicon dioxide.
Comparative example 5
This comparative example differs from example 1 in that:
the weight portion of the modified nano silicon dioxide is 0 portion.
And (3) performance testing:
the abrasion-resistant abrasives of examples 1 to 4 and comparative examples 1 to 5 were measured for light transmittance, abrasion resistance and impact strength by the following methods:
light transmittance: injection molding the abrasion resistant grit material into a 2.0mm thick, 100 x 100 square plate using an injection molding machine, and testing the light transmittance according to ASTM D1003-61 (1997);
wear resistance: adopting an injection molding machine to injection mold the wear-resistant abrasive material into a square plate with the thickness of 2.0mm and the thickness of 100 x 100, testing the initial friction coefficient and the wear friction coefficient by adopting a GB3960 test method, and testing the wear friction coefficient by taking the surface of the square plate subjected to load 180N, sliding speed of 0.3m/s and dry friction for 4 hours as a test object to test the abrasive wheel: 45 steel, 42-45HRC; the wear rate is the volume worn under unit load in unit length, namely, the wear rate = the wear volume after being worn by adopting the method divided by the accumulated friction work, and the unit is cm 3 /(N·m)。
Impact strength: carrying out impact test on the A-shaped notch of the simply supported beam at the temperature of 25 ℃ by adopting a GB/T1043.1-2008 test method;
the test results are shown in the following table:
the wear-resistant abrasive material disclosed by the invention has the advantages that polypropylene, low-density polyethylene and polylactic acid are used as main resins, sufficient adhesive force is ensured to be combined with an ink printing layer on a PVC (polyvinyl chloride) base material film after the wear-resistant abrasive material is sprayed, the polylactic acid and the graft modified tapioca starch are added, the sheet can be conveniently discarded, the degradation of the abrasive layer is facilitated, the added graft modified tapioca starch, the modified nano-silica, the modified nano-calcium carbonate, the compatilizer, the plasticizer, the heat stabilizer and the antioxidant are used for improving the wear resistance, the dirt resistance and the toughness of the abrasive layer and ensuring the transparency and the surface gloss of the abrasive layer, and the added graft modified tapioca starch can maintain certain toughness and also reduce the raw material cost.
The above-described embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Claims (7)
1. The utility model provides a dull polish PVC sheet of bed, its characterized in that: including PVC substrate membrane, printing ink printing layer, dull polish layer and the enhancement coating of resistant scraping that bonds in proper order, the dull polish layer is drenched the membrane by wear-resisting dull polish material, is colded pressing the dull polish and forms, wear-resisting dull polish material includes the following weight of parts's composition:
30-50 parts of polypropylene
25-40 parts of low-density polyethylene
20-25 parts of polylactic acid
10-20 parts of graft modified cassava starch
20-30 parts of modified nano silicon dioxide
5-15 parts of modified nano calcium carbonate
1-2 parts of compatilizer
0.1 to 0.5 portion of plasticizer
1-5 parts of heat stabilizer
4-8 parts of an antioxidant;
the preparation method of each part of the grafted modified cassava starch comprises the following steps:
(R1) taking 100 parts of cassava starch, 0.01-0.02 part of phosphorus oxychloride, 2-8 parts of sodium chloride and 120-150 parts of water by weight for later use;
(R2) uniformly mixing the cassava starch, sodium chloride and water, adding an alkalinity regulator to regulate the pH value to 9.0-10.0, then adding phosphorus oxychloride at the temperature of 45-55 ℃, reacting for 40-60min, and then sequentially performing carbonation neutralization, washing, drying and crushing to obtain the graft modified cassava starch;
the modified nano silicon dioxide is dried after being soaked in a hydrogen-containing silane coupling agent aqueous solution for 24 hours; the modified nano calcium carbonate is dried after being soaked in a hydrogen-containing silane coupling agent aqueous solution for 24 hours;
the compatilizer is ethylene-acrylate-glycidyl acrylate terpolymer.
2. A ply-frosted PVC sheet as claimed in claim 1, wherein: the density of the polypropylene is 0.90-0.93g/cm 3 And a copolymerized polypropylene having a melt flow rate of 8 to 15g/10min at 230 ℃/2.16kg load.
3. A ply-frosted PVC sheet as claimed in claim 1, wherein: the low density polyethylene has a melt index of 1.5-2.5g/10min and a density of 0.918-0.928g/cm 3 。
4. A sheet of dull-polished PVC according to claim 1, characterized in that: the alkalinity regulator is sodium hydroxide aqueous solution with the concentration of 3-5 wt%; the carbonic acid is saturated carbonic acid water solution.
5. A ply-frosted PVC sheet as claimed in claim 1, wherein: the plasticizer is at least one of polyethylene glycol, tributyl citrate or dioctyl terephthalate.
6. A ply-frosted PVC sheet as claimed in claim 1, wherein: the heat stabilizer is S9228 or S9228T; the antioxidant is antioxidant 1010 or antioxidant 1098.
7. A method of making a laminated matte PVC sheet according to any one of claims 1-6, wherein: the method comprises the following steps:
(S1) taking a PVC (polyvinyl chloride) substrate film, printing ink, a wear-resistant abrasive material and a scratch-resistant reinforced coating for later use;
(S2) coating printing ink on one surface of the PVC base material film, and forming an ink printing layer on one surface of the PVC base material film after drying;
(S3) after the wear-resistant abrasive material is coated on the surface of the ink printing layer, the ink printing layer penetrates through a cooling pressing roller and a frosting roller, so that the wear-resistant abrasive material is cooled and frosted to obtain a frosted texture, and a frosted layer is formed;
and (S4) coating a scratch-resistant reinforced coating on the surface of the frosted layer, and drying to form a scratch-resistant reinforced coating to obtain the plate layer frosted PVC sheet.
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| CN108690286A (en) * | 2018-05-29 | 2018-10-23 | 芜湖创科新材料科技有限公司 | A kind of scratch-resistant modified PVC material of high rigidity and preparation method thereof |
| CN110804250A (en) * | 2019-12-04 | 2020-02-18 | 苏州炜隆灿防静电包装有限公司 | Improved high-strength scratch-resistant polypropylene material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5288540A (en) * | 1991-06-21 | 1994-02-22 | Formica Technology Delaware | Damage resistant decorative laminate having excellent appearance and cleanability and methods of producing same |
| CN105419156A (en) * | 2015-11-30 | 2016-03-23 | 蚌埠市华科机电有限责任公司 | Wear-resistant modified plastic |
| CN106398087A (en) * | 2016-09-29 | 2017-02-15 | 中广核高新核材集团（东莞）祈富新材料有限公司 | Highly-flame-retardant scratch-resistant frosting TPE sheathing material |
| CN107652458B (en) * | 2017-08-23 | 2023-05-05 | 安徽明讯新材料科技股份有限公司 | High-wear-resistance frosted film and manufacturing process thereof |
| CN214606355U (en) * | 2020-12-29 | 2021-11-05 | 广州市柏拉图塑胶有限公司 | Fluororesin surface modified PVC film structure coiled material |
| CN113604143B (en) * | 2021-08-04 | 2022-07-22 | 佛山市精信汇明科技有限公司 | Two-component waterborne polyurethane scratch-resistant wear-resistant PVC (polyvinyl chloride) coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108690286A (en) * | 2018-05-29 | 2018-10-23 | 芜湖创科新材料科技有限公司 | A kind of scratch-resistant modified PVC material of high rigidity and preparation method thereof |
| CN110804250A (en) * | 2019-12-04 | 2020-02-18 | 苏州炜隆灿防静电包装有限公司 | Improved high-strength scratch-resistant polypropylene material and preparation method thereof |
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