阅读说明：本技术 一种防静电软塑包装材料及其制备方法 (Anti-static soft plastic packaging material and preparation method thereof ) 是由 肖志坚 于 2019-08-29 设计创作，主要内容包括：本发明公开了一种防静电软塑包装材料及其制备方法,所述防静电软塑包装材料是由以下组分按重量百分比组成：聚碳酸酯15～25份,线性低密度聚乙烯25～30份,聚氟丙烯12～15份,聚对苯二甲酸丁二醇酯10～20份,聚氯乙烯5～10份,增塑剂2～4份,碳酸钙1～3份,润滑剂1～1.5份,十二烷基二乙醇胺1～3份,石墨烯2～4份。本发明所制得的防静电软塑包装材料具有优良的抗拉断心能以及延展性能,在保证了材料表面电阻率的同时能够更好的对包装的产品起到防护作用。(The invention discloses an anti-static soft plastic packaging material and a preparation method thereof, wherein the anti-static soft plastic packaging material comprises the following components in percentage by weight: 15-25 parts of polycarbonate, 25-30 parts of linear low-density polyethylene, 12-15 parts of polyfluoropropene, 10-20 parts of polybutylene terephthalate, 5-10 parts of polyvinyl chloride, 2-4 parts of plasticizer, 1-3 parts of calcium carbonate, 1-1.5 parts of lubricant, 1-3 parts of dodecyl diethanolamine and 2-4 parts of graphene. The anti-static soft plastic packaging material prepared by the invention has excellent tensile core breaking resistance and extensibility, and can better protect packaged products while ensuring the surface resistivity of the material.)

1. An anti-static soft plastic packaging material is characterized by mainly comprising the following components in parts by weight: 15-25 parts of polycarbonate, 25-30 parts of linear low-density polyethylene, 12-15 parts of polyfluoropropene, 10-20 parts of polybutylene terephthalate, 5-10 parts of polyvinyl chloride, 2-4 parts of plasticizer, 1-3 parts of calcium carbonate, 1-1.5 parts of lubricant, 1-3 parts of dodecyl diethanolamine and 2-4 parts of graphene.

2. The antistatic soft plastic packaging material as claimed in claim 1, characterized by comprising the following components by weight: 25 parts of polycarbonate, 27 parts of linear low-density polyethylene, 12 parts of polyfluoropropene, 15 parts of polybutylene terephthalate, 5 parts of polyvinyl chloride, 2 parts of plasticizer, 3 parts of calcium carbonate, 1 part of lubricant, 3 parts of dodecyl diethanolamine, 4 parts of graphene, 1.5 parts of sodium tripolyphosphate and 1.5 parts of sodium bicarbonate.

3. The antistatic soft plastic packaging material as claimed in claim 1, characterized by comprising the following components by weight: 15 parts of polycarbonate, 27 parts of linear low-density polyethylene, 15 parts of polyfluoropropene, 20 parts of polybutylene terephthalate, 10 parts of polyvinyl chloride, 4 parts of plasticizer, 3 parts of calcium carbonate, 1 part of lubricant, 1 part of dodecyl diethanolamine, 2.5 parts of graphene and 1.5 parts of sodium tripolyphosphate.

4. The antistatic soft plastic packaging material as claimed in claim 1, characterized by comprising the following components by weight: 21 parts of polycarbonate, 30 parts of linear low-density polyethylene, 15 parts of polyfluoropropene, 10 parts of polybutylene terephthalate, 10 parts of polyvinyl chloride, 4 parts of plasticizer, 3 parts of calcium carbonate, 1.5 parts of lubricant, 1.5 parts of dodecyl diethanolamine and 4 parts of graphene.

5. The antistatic soft plastic packaging material as claimed in claim 1, wherein: the plasticizer is formed by mixing 1 part of trioctyl trimellitate and 3 parts of diisononyl phthalate according to a mass ratio.

6. The preparation method of the antistatic soft plastic packaging material as claimed in claims 1 to 5, characterized in that: (1) taking 15-25 parts of polycarbonate, 25-30 parts of linear low-density polyethylene, 12-15 parts of polyfluoropropene, 5-10 parts of polyvinyl chloride, 1-3 parts of calcium carbonate, 1-1.5 parts of lubricant, 1-3 parts of dodecyl diethanolamine and 2-4 parts of graphene according to the mass ratio, uniformly stirring the materials in a container, heating the temperature in the container to 120-180 ℃, maintaining the temperature for 4-8 hours to obtain a mixture, and cooling the mixture for later use; (2) putting the mixture, 10-20 parts of polybutylene terephthalate and 2-4 parts of plasticizer into a high-speed dispersion machine, uniformly mixing, and dispersing for 10-30 minutes at the rotating speed of 8000-12000 rpm; (3) naturally cooling the mixture in the step (2) to below 60 ℃, and standing for at least 2 hours; (4) taking out the mixture obtained in the step (3), and drying at 100-120 ℃ for 1-2 hours; (5) and (3) adding the mixture obtained in the step (4) into a double-screw extruder, heating to 300-420 ℃, and extruding and granulating at the screw rotating speed of 80-120 r/min.

7. The method for preparing the antistatic soft plastic packaging material as claimed in claim 6, wherein the method comprises the following steps: and (4) a step (4a) is further provided after the steps (4) and (5), wherein the step (4a) is that the mixture obtained in the step (4) is fully mixed with 1.5 parts of sodium tripolyphosphate and 1.5 parts of sodium bicarbonate by mass ratio, then the mixture is uniformly stirred and placed for 10 minutes, and then the mixture is put into a high-speed dispersion machine to be dispersed for 5-10 minutes at the rotating speed of 6000-8000 rpm.

Technical Field

The invention relates to the field of packaging, in particular to a packaging material and a preparation method thereof.

Background

The application of the packaging material in the existing industrial production is very common, various industries have different requirements on the packaging material, and most of the anti-static packaging products are made of static dissipative materials, and some of the anti-static packaging products are made of anti-static materials. The purpose is to perform electrostatic protection on the loaded product. Particularly, in the aspect of packaging electronic devices and the aspect of packaging organic inflammable substances, the products are very sensitive to static electricity, and the organic inflammable substances are easy to generate potential safety hazards such as fire and the like under the condition of static electricity; electronic devices need to be transported and stored without electrostatic conditions, which would affect the accuracy and quality of the devices. The existing antistatic technology mainly coats an antistatic agent on the surface of a material, so that a packaging film has certain conductivity, but the antistatic agent is mostly a surfactant, can be dissociated on the surface of an object, is easy to react with some objects in the air, has low surface resistance value and cannot be subjected to corona treatment, and meanwhile, because the antistatic performance of the soft plastic packaging is required to be met, the mechanical and physical properties of a simple substance film are low, reliable protection cannot be provided for an inner packaging product, and the wide application of the soft plastic packaging material is limited. Therefore, the flexible plastic packaging industry is urgently in need of developing a flexible plastic packaging composite material which not only has an antistatic function, but also has good mechanical and physical properties.

Disclosure of Invention

The first objective of the present invention is to provide an antistatic soft plastic packaging material to solve the above problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: an anti-static soft plastic packaging material mainly comprises the following components in parts by weight: 15-25 parts of polycarbonate, 25-30 parts of linear low-density polyethylene, 12-15 parts of polyfluoropropene, 10-20 parts of polybutylene terephthalate, 5-10 parts of polyvinyl chloride, 2-4 parts of plasticizer, 1-3 parts of calcium carbonate, 1-1.5 parts of lubricant, 1-3 parts of dodecyl diethanol amine and 2-4 parts of graphene.

Preferably, the mass ratio of each component is as follows: 25 parts of polycarbonate, 27 parts of linear low-density polyethylene, 12 parts of polyfluoropropene, 15 parts of polybutylene terephthalate, 5 parts of polyvinyl chloride, 2 parts of plasticizer, 3 parts of calcium carbonate, 1 part of lubricant, 3 parts of dodecyl diethanolamine, 4 parts of graphene, 1.5 parts of sodium tripolyphosphate and 1.5 parts of sodium bicarbonate.

Preferably, the mass ratio of each component is as follows: 15 parts of polycarbonate, 27 parts of linear low-density polyethylene, 15 parts of polyfluoropropene, 20 parts of polybutylene terephthalate, 10 parts of polyvinyl chloride, 4 parts of plasticizer, 3 parts of calcium carbonate, 1 part of lubricant, 1 part of dodecyl diethanolamine, 2.5 parts of graphene and 1.5 parts of sodium tripolyphosphate.

Preferably, the mass ratio of each component is as follows: 21 parts of polycarbonate, 30 parts of linear low-density polyethylene, 15 parts of polyfluoropropene, 10 parts of polybutylene terephthalate, 10 parts of polyvinyl chloride, 4 parts of plasticizer, 3 parts of calcium carbonate, 1.5 parts of lubricant, 1.5 parts of dodecyl diethanolamine and 4 parts of graphene.

Specifically, the plasticizer is formed by mixing 1 part of trioctyl trimellitate and 3 parts of diisononyl phthalate according to a mass ratio.

The invention also aims to provide a preparation method of the anti-static soft plastic packaging material, which mainly comprises the following steps:

(1) taking 15-25 parts of polycarbonate, 25-30 parts of linear low-density polyethylene, 12-15 parts of polyfluoropropene, 5-10 parts of polyvinyl chloride, 1-3 parts of calcium carbonate, 1-1.5 parts of lubricant, 1-3 parts of dodecyl diethanol amine and 2-4 parts of graphene according to the mass ratio, uniformly stirring the materials in a container, heating the temperature in the container to 120-180 ℃, maintaining the temperature for 4-8 hours to obtain a mixture, and cooling the mixture for later use; (2) putting the mixture, 10-20 parts of polybutylene terephthalate and 2-4 parts of plasticizer into a high-speed disperser, uniformly mixing, and dispersing for 10-30 minutes at the rotating speed of 8000-12000 rpm; (3) naturally cooling the mixture in the step (2) to below 60 ℃, and standing for at least 2 hours; (4) taking out the mixture obtained in the step (3), and drying at 100-120 ℃ for 1-2 hours; (5) and (3) adding the mixture obtained in the step (4) into a double-screw extruder, heating to 300-420 ℃, and extruding and granulating at a screw rotating speed of 80-120 r/min.

And (4) a step (4a) is further provided after the steps (4) and (5), wherein the step (4a) is that the mixture obtained in the step (4) is fully mixed with 1.5 parts of sodium tripolyphosphate and 1.5 parts of sodium bicarbonate by mass ratio, then the mixture is uniformly stirred and placed for 10 minutes, and then the mixture is put into a high-speed dispersion machine to be dispersed for 5-10 minutes at the rotating speed of 6000-8000 rpm.

The invention has the beneficial effects that: the anti-static soft plastic packaging material prepared by the invention has excellent tensile core breaking resistance and extensibility, and can better protect packaged products while ensuring the surface resistivity of the material.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The anti-static soft plastic packaging material mainly comprises, by weight, 15-25 parts of polycarbonate, 25-30 parts of linear low-density polyethylene, 12-15 parts of polyfluoropropylene, 10-20 parts of polybutylene terephthalate, 5-10 parts of polyvinyl chloride, 2-4 parts of a plasticizer, 1-3 parts of calcium carbonate, 1-1.5 parts of a lubricant, 1-3 parts of dodecyl diethanolamine and 2-4 parts of graphene, and can further comprise not more than 1.5 parts of sodium tripolyphosphate and not more than 1.5 parts of sodium bicarbonate. Specifically, the plasticizer is formed by mixing 1 part of trioctyl trimellitate and 3 parts of diisononyl phthalate according to a mass ratio. The linear low density polyethylene provided for the present invention has the following parameters: an average density of 0.905g/cm 3 to 0.910g/cm 3, a melt flow index (190 ℃ C., 2.16kg) of 5g/10min to 20g/10min, a peak melting point of 80 ℃ to 120 ℃ C., and an expansion ratio of 1.4 to 1.6.

The invention also provides a preparation method of the anti-static soft plastic packaging material.