PVC (polyvinyl chloride) salt film with high puncture resistance

Abstract

The invention relates to the technical field of high polymer materials, and discloses a high-puncture-resistance PVC salt film which is prepared from the following raw materials in parts by weight: 100 parts of resin, 5PHR of DOP, 3-5PHR of ABS, 3-5PHR of CPE, 3-5PHR of epoxidized soybean oil, 4PHR of a liquid barium-zinc stabilizer, 1.5-2PHR of zinc stearate, 2.5-3.5 PHR of butyl stearate, 3-5PHR of a processing aid, 5PHR of a plasticizer, 7PHR of an additive and 0.5 PHR of a HALS light stabilizer. The PA resin, the POM resin and the UHMWPE resin have relatively high friction resistance, so that the puncture resistance of the PVC salt film is enhanced; chlorinated polyethylene, chlorosulfonated polyethylene and methylstyrene polymer processing aids are added into the formula, so that the toughness of the PVC can be remarkably improved, and the impact strength, especially the low-temperature impact strength, can be improved; the chloroprene rubber powder and the nitrile rubber powder are added into the formula, so that the tensile strength and the impact strength are improved, the overall puncture resistance is further enhanced, and the cable is firm and durable.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, in particular to a high-puncture-resistant PVC salt film. Background Art

[0002] The chemical composition of table salt is sodium chloride. After the introduction of chemical science into China, the compound composed of metal ions or ammonium ions and acid ions or non-metal ions was named "salt". Salt is an important seasoning. By covering the crystallization pool with PCV salt film, the output and quality of salt can be greatly improved. The crystallization pool is outdoors, so the performance of the salt film is particularly important.

[0003] Nowadays, PVC salt film is a very thin film. During use, its wear resistance and puncture resistance are weak, and it is easy to be damaged, resulting in the PVC salt film being unable to be used normally. The existing Chinese invention patent application number is: 201510813274.7, which discloses a high puncture resistance PVC salt film, mainly including 100 parts of PVC resin, 35~40 parts of DOP, 3~8 parts of DOS, 3~8 parts of epoxy soybean oil, 1~5 parts of Ba-Cd-Zn composite stabilizer, 0.1~0.3 parts of HSt, 0~0.3 parts of bisphenol A antioxidant, 0~0.3 parts of UV-9 light stabilizer, 0~2 parts of carbon black, 0~0.3 parts of triazine-50, 0.1~1 parts of phosphate YL-0HP, and 1~5 parts of ACR. However, its toughness is insufficient, and the wear resistance and puncture resistance need to be further enhanced. Summary of the invention

[0004] 1. Technical issues to be resolved The object of the present invention is to provide a PVC salt film with high puncture resistance to solve the problems raised in the above background technology.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a high puncture resistance PVC salt film, which is made of the following raw materials in parts by weight: 100 parts of resin, 5PHR of DOP, 3~5PHR of ABS, 3~5PHR of CPE, 3~5PHR of epoxidized soybean oil, 4PHR of liquid barium zinc stabilizer, 1.5~2PHR of zinc stearate, 2.5~3.5PHR of butyl stearate, 3~5PHR of processing aid, 5PHR of plasticizer, 7PHR of additive, and 0.5PHR of HALS light stabilizer.

[0006] Preferably, the salt film is made of the following raw materials in parts by weight: 100 parts of resin, 5PHR of DOP, 5PHR of ABS, 5PHR of CPE, 5PHR of epoxidized soybean oil, 4PHR of liquid barium zinc stabilizer, 1.5PHR of zinc stearate, 3.5PHR of butyl stearate, 35PHR of processing aid, 5PHR of plasticizer, and 7PHR of additives.

[0007] Preferably, the resin is selected from one of PA, POM and UHMWPE.

[0008] Preferably, the processing aid is chlorinated polyethylene, chlorosulfonated polyethylene, or methyl styrene polymer.

[0009] Preferably, the plasticizer is selected from one of the copolymers of polyethylene and vinyl acetate (vinyl chloride resin); copolymers of vinyl chloride and acrylate; and terpolymers of vinyl chloride, ethylene and vinyl acetate.

[0010] Preferably, the additive is chloroprene rubber powder or nitrile rubber powder.

[0011] The preparation method of the above-mentioned high puncture resistance PVC salt film comprises the following steps: S1. Raw material preparation: crush and mix the above raw materials according to a certain proportion; S2, extrusion: the crushed and mixed raw materials are put into the extruder, and the raw materials are extruded into a film through a high temperature and high pressure extrusion process; S3, cooling: cooling the extruded PVC film; S4, coating: coating the surface of the PVC film to increase its wear resistance and weather resistance. The coating is carried out by roller coating or spraying. Polysiloxane can be used for the coating; S5, cutting: cutting the coated PVC film according to the requirements to make products of different sizes; S6. Packaging: Roll the cut PVC film.

[0012] Compared with the prior art, the invention has the following beneficial effects: PA, POM and UHMWPE resins have strong friction resistance and enhance the puncture resistance of PVC salt film; adding chlorinated polyethylene, chlorosulfonated polyethylene and methyl styrene polymer processing aids to the formula can significantly improve the toughness of PVC and improve the impact strength, especially the low-temperature impact strength; adding a copolymer of polyethylene and vinyl acetate; a copolymer of vinyl chloride and acrylate; and a plasticizer of one of the terpolymers of vinyl chloride, ethylene and vinyl acetate to the formula makes the whole have high softness, plastic toughness and impact resistance; adding chloroprene rubber powder and nitrile rubber powder additives to the formula improves the tensile strength and impact strength, so that the overall puncture resistance is further enhanced and the film is strong and durable. DETAILED DESCRIPTION

[0013] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0014] Embodiment 1 A high puncture-resistant PVC salt film is prepared from the following raw materials in parts by weight: 100 parts of resin, 5 parts of DOP, 3 parts of ABS, 3 parts of CPE, 3 parts of epoxidized soybean oil, 4 parts of liquid barium zinc stabilizer, 1.5 parts of zinc stearate, 2.5 parts of butyl stearate, 3 parts of processing aid, 5 parts of plasticizer, 7 parts of additive, and 0.5 parts of HALS light stabilizer.

[0015] Preferably, the resin is one of PA, POM and UHMWPE.

[0016] Preferably, the processing aid is chlorinated polyethylene, chlorosulfonated polyethylene, or methyl styrene polymer.

[0017] Preferably, the plasticizer is selected from one of the copolymers of polyethylene and vinyl acetate (vinyl chloride resin); copolymers of vinyl chloride and acrylate; and terpolymers of vinyl chloride, ethylene and vinyl acetate.

[0018] Preferably, the additive is chloroprene rubber powder or nitrile rubber powder.

[0019] The preparation method of the above-mentioned high puncture resistance PVC salt film comprises the following steps: S1. Raw material preparation: crush and mix the above raw materials according to a certain proportion; S2, extrusion: the crushed and mixed raw materials are put into the extruder, and the raw materials are extruded into a film through a high temperature and high pressure extrusion process; S3, cooling: cooling the extruded PVC film; S4, coating: coating the surface of the PVC film to increase its wear resistance and weather resistance. The coating is carried out by roller coating or spraying. Polysiloxane can be used for the coating; S5, cutting: cutting the coated PVC film according to the requirements to make products of different sizes; S6. Packaging: Roll the cut PVC film.

[0020] Embodiment 2 A high puncture-resistant PVC salt film is prepared from the following raw materials in parts by weight: 100 parts of resin, 5 parts of DOP, 4 parts of ABS, 4 parts of CPE, 4 parts of epoxidized soybean oil, 4 parts of liquid barium zinc stabilizer, 1.5 parts of zinc stearate, 3 parts of butyl stearate, 4 parts of processing aid, 5 parts of plasticizer, 7 parts of additive, and 0.5 parts of HALS light stabilizer.

[0021] Specifically, the resin is selected from one of PA, POM and UHMWPE.

[0022] Specifically, the processing aid is selected from chlorinated polyethylene, chlorosulfonated polyethylene, and methyl styrene polymer.

[0023] Specifically, the plasticizer is selected from one of the copolymers of polyethylene and vinyl acetate (vinyl chloride resin); copolymers of vinyl chloride and acrylate; and terpolymers of vinyl chloride, ethylene, and vinyl acetate.

[0024] Specifically, the additives are chloroprene rubber powder and nitrile rubber powder.

[0025] The preparation method of the above-mentioned high puncture resistance PVC salt film comprises the following steps: S1. Raw material preparation: crush and mix the above raw materials according to a certain proportion; S2, extrusion: the crushed and mixed raw materials are put into the extruder, and the raw materials are extruded into a film through a high temperature and high pressure extrusion process; S3, cooling: cooling the extruded PVC film; S4, coating: coating the surface of the PVC film to increase its wear resistance and weather resistance. The coating is carried out by roller coating or spraying. Polysiloxane can be used for the coating; S5, cutting: cutting the coated PVC film according to the requirements to make products of different sizes; S6. Packaging: Roll the cut PVC film.

[0026] Embodiment 3 A high puncture-resistant PVC salt film is made of the following raw materials in parts by weight: 100 parts of resin, 5 parts of DOP, 5 parts of ABS, 5 parts of CPE, 5 parts of epoxidized soybean oil, 4 parts of liquid barium zinc stabilizer, 2 parts of zinc stearate, 3.5 parts of butyl stearate, 5 parts of processing aid, 5 parts of plasticizer, 7 parts of additive, and 0.5 parts of HALS light stabilizer.

[0027] Specifically, the resin is selected from one of PA, POM and UHMWPE.

[0028] Specifically, the processing aid is selected from chlorinated polyethylene, chlorosulfonated polyethylene, and methyl styrene polymer.

[0029] Specifically, the plasticizer is selected from one of the copolymers of polyethylene and vinyl acetate (vinyl chloride resin); copolymers of vinyl chloride and acrylate; and terpolymers of vinyl chloride, ethylene, and vinyl acetate.

[0030] Specifically, the additives are chloroprene rubber powder and nitrile rubber powder.

[0031] The preparation method of the above-mentioned high puncture resistance PVC salt film comprises the following steps: S1. Raw material preparation: crush and mix the above raw materials according to a certain proportion; S2, extrusion: the crushed and mixed raw materials are put into the extruder, and the raw materials are extruded into a film through a high temperature and high pressure extrusion process; S3, cooling: cooling the extruded PVC film; S4, coating: coating the surface of the PVC film to increase its wear resistance and weather resistance. The coating is carried out by roller coating or spraying. Polysiloxane can be used for the coating; S5, cutting: cutting the coated PVC film according to the requirements to make products of different sizes; S6. Packaging: Roll the cut PVC film.

[0032] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A high puncture resistance PVC salt film, characterized in that: The salt film is made of the following raw materials in parts by weight: 100 parts of resin, 5 parts of DOP, 3-5 parts of ABS, 3-5 parts of CPE, 3-5 parts of epoxidized soybean oil, 4 parts of liquid barium zinc stabilizer, 1.5-2 parts of zinc stearate, 2.5-3.5 parts of butyl stearate, 3-5 parts of processing aid, 5 parts of plasticizer, 7 parts of additives, and 0.5 parts of HALS light stabilizer.

2. A high puncture resistance PVC salt film according to claim 1, characterized in that: The salt film is made of the following raw materials in parts by weight: 100 parts of resin, 5 parts of DOP, 5 parts of ABS, 5 parts of CPE, 5 parts of epoxidized soybean oil, 4 parts of liquid barium zinc stabilizer, 1.5 parts of zinc stearate, 3.5 parts of butyl stearate, 35 parts of processing aid, 5 parts of plasticizer, 7 parts of additives, and 0.5 parts of HALS light stabilizer.

3. The high puncture resistance PVC salt film according to claim 1, characterized in that: The resin is selected from one of PA, POM and UHMWPE.

4. The high puncture resistance PVC salt film according to claim 1, characterized in that: The processing aid is selected from chlorinated polyethylene, chlorosulfonated polyethylene, and methyl styrene polymer.

5. The high puncture resistance PVC salt film according to claim 1, characterized in that: The plasticizer is selected from one of the copolymers of polyethylene and vinyl acetate (vinyl chloride resin); copolymers of vinyl chloride and acrylic ester; and terpolymers of vinyl chloride, ethylene and vinyl acetate.

6. The high puncture resistance PVC salt film according to claim 1, characterized in that: The additive is selected from chloroprene rubber powder and nitrile rubber powder.