阅读说明：本技术 一种抗静电复合材料包装箱制备方法 (Preparation method of antistatic composite material packing box ) 是由 高宇 于 2019-10-16 设计创作，主要内容包括：本发明涉及包装箱技术领域,具体地说涉及的是一种抗静电复合材料包装箱制备方法及使用该复合材料箱板成型的包装箱。复合材料箱板包括由预浸料上下面层和泡沫芯材里层构成,经模压成型制得；所述的预浸料由粉末状环氧树脂组合物热熔浸渍增强材料制得；所述所述粉末状环氧树脂组合物以质量份数计,包括100份环氧树脂,1~25份固化剂,0.1~3份固化促进剂,5~45份增韧剂,1~15份导电填料,1~20份助剂。本发明提供的包装箱具有较好的抗静电性能,且可多次循环使用降低包装成本。(The invention relates to the technical field of packing boxes, in particular to a preparation method of an antistatic composite material packing box and a packing box formed by using a composite material box plate. The composite material boxboard comprises an upper surface layer and a lower surface layer of prepreg and an inner layer of a foam core material, and is prepared by compression molding; the prepreg is prepared by hot-melting and impregnating a reinforcing material with a powdery epoxy resin composition; the powdery epoxy resin composition comprises, by mass, 100 parts of epoxy resin, 1-25 parts of a curing agent, 0.1-3 parts of a curing accelerator, 5-45 parts of a toughening agent, 1-15 parts of a conductive filler and 1-20 parts of an auxiliary agent. The packaging box provided by the invention has better antistatic performance, and can be recycled for multiple times to reduce the packaging cost.)

1. The preparation method of the antistatic composite material packing box is characterized by comprising the following steps of:

the method comprises the following steps: preparation of powdered epoxy resin composition

Adding the raw materials into a mixer, stirring and mixing for 1-5 min, then feeding the raw materials into an extruder, carrying out melt extrusion at 70-100 ℃, cooling and coarsely crushing the raw materials by a tablet machine, feeding the raw materials into an ACM (Acetobacter xylinum) mill, finely crushing the raw materials, and screening the crushed raw materials by a cyclone separator to obtain a powdery epoxy resin composition;

step two: prepreg preparation

The preparation method comprises the following steps of (1) scattering a powdery epoxy resin composition onto a reinforcing material through a powder scattering device, heating and melting at the temperature of 70-110 ℃, impregnating the reinforcing material under the rolling action, and cooling and rolling through a cooling section to obtain a prepreg roll;

step three: compression molding

The method comprises the steps of superposing an upper surface layer and a lower surface layer of a prepreg and an inner layer of a foam core material, laying the laminated prepreg and the inner layer of the foam core material in a mold, and preparing the composite material packing boxboard by adopting a compression molding method, wherein in the compression molding method, the molding temperature is 120-140 ℃, the molding time is 3-6 min, and the molding pressure is 0.4-3 MPa; and assembling the composite material packing box board to obtain the composite material packing box.

2. The preparation method of the antistatic composite material packaging box according to claim 1, wherein the powdery epoxy resin composition comprises, by mass, 100 parts of epoxy resin, 1-25 parts of a curing agent, 0.1-3 parts of a curing accelerator, 5-45 parts of a toughening agent, 1-15 parts of a conductive filler and 1-20 parts of an auxiliary agent.

3. The preparation method of the antistatic composite material packing box according to claim 2, wherein the epoxy resin is at least one of bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin and novolac epoxy resin;

the curing agent is at least one of dicyandiamide and derivatives thereof, aliphatic amines, alicyclic amines, aromatic amines, acid anhydrides and hydrazide;

the curing accelerator is at least one of organic urea and derivatives thereof, imidazole and derivatives thereof, tertiary amine and triphenylphosphine;

the toughening agent is at least one of carboxyl-terminated butadiene-acrylonitrile rubber, hydroxyl-terminated butadiene-acrylonitrile rubber, amino-terminated butadiene-acrylonitrile rubber, polyvinyl butyral, polyvinyl formal, polyvinyl acetal, polyvinyl alcohol, nylon powder, polyurethane, low molecular polyamide, styrene maleic anhydride copolymer, maleic anhydride grafted polypropylene and maleic anhydride grafted polyethylene;

the conductive filler is at least one of graphene, carbon nano tubes, conductive carbon black, carbon fiber powder, aluminum powder, zinc oxide, titanium oxide, ITO (indium tin oxide) and ATO (antimony tin oxide);

the auxiliary agent comprises the following raw materials in parts by weight: 0.1-3 parts of coupling agent, 0-15 parts of flow promoter and 0-5 parts of degassing agent; the coupling agent is at least one of silane coupling agent, titanate coupling agent, zirconate coupling agent or aluminate coupling agent; the flow promoter is at least one of acrylate, stearate or micro wax powder; the degassing agent is anti-yellow benzoin.

4. The method for preparing the antistatic composite material packing box according to claim 1, wherein the prepreg is composed of a reinforcing material and the powdered epoxy resin composition according to any one of claims 2 to 3.

5. The method for preparing the antistatic composite material packing box according to claim 4, wherein the content of the powdery epoxy resin composition is 35 to 80wt% based on 100 parts by weight of the prepreg.

6. The method for preparing the antistatic composite material packing box according to claim 4, wherein the reinforcing material is one or more of glass fiber, carbon fiber, aramid fiber, basalt fiber, bamboo fiber or hemp fiber.

7. The method for preparing the antistatic composite material packing box according to claim 1, wherein the composite material packing box board is prepared from the prepreg according to any one of claims 4 to 6.

Technical Field

The invention relates to the field of packing boxes, in particular to an antistatic composite packing box and a preparation method thereof.

Background

With the development of packaging technology, a large amount of plastics are widely used as packaging materials, most plastics are materials with good electrical insulation, and extremely high electrostatic voltage is generated between the plastics and products due to mutual friction and vibration in the processes of loading, unloading, transportation, storage and management, so that the products are seriously threatened. For various static sensitive devices such as electronic elements, integrated circuits, instruments and meters, if materials which are easy to generate static electricity are adopted as packaging materials, the static electricity accumulation generated by friction or electromagnetic induction can generate discharge under proper conditions, so that product failure or part of elements are damaged, and great economic loss is caused.

With the ever-increasing awareness of electrostatic hazards, anti-static packaging is becoming more and more important. Various electronic products become more and more delicate, the electrostatic sensitivity of microelectronic products is more improved along with the miniaturization and integration of the products, and the demand on various antistatic packages is higher and higher.

Disclosure of Invention

The invention aims to provide an antistatic composite material packing box and a preparation method thereof, which are used for solving the requirement of static resistance in the turnover process of electronic components in the background technology and can be recycled for multiple times to reduce the packing cost.

In order to achieve the purpose, the invention provides the following technical scheme:

the antistatic composite material packing box is characterized in that the preparation method of the antistatic composite material packing box comprises the following steps:

the method comprises the following steps: a powdered epoxy resin composition is prepared. Adding the raw materials into a high-speed mixer, stirring and mixing for 1-5 min, then feeding the raw materials into an extruder, carrying out melt extrusion at 70-100 ℃, cooling and coarsely crushing the raw materials by a tablet machine, feeding the raw materials into an ACM (Acrylonitrile-butadiene-styrene) mill, finely crushing the raw materials, and screening the raw materials by a cyclone separator to obtain the powdery epoxy resin composition.

Step two: and (3) preparing a prepreg. Uniformly scattering the powdery epoxy resin composition onto the reinforcing material through a powder scattering device, heating and melting at 70-110 ℃, impregnating the reinforcing material under the rolling action, and cooling and rolling through a cooling section to obtain the prepreg roll.

Step three: and (4) compression molding. And (3) superposing the upper surface layer and the lower surface layer of the prepreg and the inner layer of the foam core material, laying the laminated sheets in a mold, and preparing the composite material packing boxboard by adopting a compression molding method, wherein in the compression molding method, the molding temperature is 120-140 ℃, the molding time is 3-6 min, and the molding pressure is 0.4-3 MPa. And assembling the composite material packing box board to obtain the composite material packing box.

In the above technical scheme, the preferable technical scheme is that the powdered epoxy resin composition comprises, by mass, 100 parts of epoxy resin, 1-25 parts of a curing agent, 0.1-3 parts of a curing accelerator, 5-45 parts of a toughening agent, 1-15 parts of a conductive filler, and 1-20 parts of an auxiliary agent.

According to a preferable technical scheme, the epoxy resin is at least one of bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin and novolac epoxy resin;

the curing agent is at least one of dicyandiamide and derivatives thereof, aliphatic amines, alicyclic amines, aromatic amines, acid anhydrides and hydrazide;

the curing accelerator is at least one of organic urea and derivatives thereof, imidazole and derivatives thereof, tertiary amine and triphenylphosphine;

the toughening agent is at least one of carboxyl-terminated butadiene-acrylonitrile rubber, hydroxyl-terminated butadiene-acrylonitrile rubber, amino-terminated butadiene-acrylonitrile rubber, polyvinyl butyral, polyvinyl formal, polyvinyl acetal, polyvinyl alcohol, nylon powder, polyurethane, low molecular polyamide, styrene maleic anhydride copolymer, maleic anhydride grafted polypropylene and maleic anhydride grafted polyethylene;

the conductive filler is at least one of graphene, carbon nano tubes, conductive carbon black, carbon fiber powder, aluminum powder, zinc oxide, titanium oxide, ITO (indium tin oxide) and ATO (antimony tin oxide);

the auxiliary agent comprises the following raw materials in parts by weight: 0.1-3 parts of coupling agent, 0-15 parts of flow promoter and 0-5 parts of degassing agent. The coupling agent is at least one of silane coupling agent, titanate coupling agent, zirconate coupling agent or aluminate coupling agent; the flow promoter is at least one of acrylate, stearate or micro wax powder; the degassing agent is anti-yellow benzoin.

In a preferred embodiment, the prepreg comprises a reinforcing material and the powdery epoxy resin composition of the present invention.

The content of the powdery epoxy resin composition is 35-80 wt% based on 100 parts by weight of the prepreg.

The reinforcing material is one or more of glass fiber, carbon fiber, aramid fiber, basalt fiber, bamboo fiber or hemp fiber.

According to the preferable technical scheme, the composite material packing boxboard is prepared from the prepreg.

Has the advantages that: the composite material packing box has high strength, better protection performance on the contents and convenience of cyclic turnover use, and the application field of the composite material packing box covers different industries which also put different requirements on the performance of the packing box. For the electronic product industry, the anti-static packing box can effectively release static charges accumulated on the surface of an object, so that the anti-static packing box can not generate charge accumulation and high potential difference, the damage of the electronic product caused by static electricity in the circulation process can be greatly reduced, and the cost is reduced. The packaging box provided by the invention has better antistatic performance, and can be recycled for multiple times to reduce the packaging cost.

Detailed Description

[ example 1 ]

The invention provides an antistatic composite material packing box, and a preparation method of the antistatic composite material packing box comprises the following steps:

the method comprises the following steps: a powdered epoxy resin composition is prepared.

Weighing 100 parts of E-20 epoxy resin, 15 parts of curing agent tetrahydrophthalic anhydride, 0.3 part of curing accelerator 2-methylimidazole, 15 parts of toughening agent maleic anhydride grafted polypropylene, 15 parts of carboxyl-terminated butadiene-acrylonitrile rubber, 8 parts of conductive filler carbon nano tube, KH-5602 parts, 10 parts of acrylate and 3 parts of anti-yellowing benzoin.

Adding the raw materials into a high-speed mixer, stirring and mixing for 1-5 min, then feeding the raw materials into an extruder, carrying out melt extrusion at 70-100 ℃, cooling and coarsely crushing the raw materials by a tablet machine, feeding the raw materials into an ACM (Acrylonitrile-butadiene-styrene) mill, finely crushing the raw materials, and screening the raw materials by a cyclone separator to obtain the powdery epoxy resin composition.

Step two: and (3) preparing a prepreg.

The reinforcing material is alkali-free twill glass fiber cloth with the gram weight of 300 g/m². The prepreg comprises 35-80 wt% of the cyclic resin composition based on 100 parts by weight of the prepreg.

Uniformly scattering the powdery epoxy resin composition onto the reinforcing material through a powder scattering device, heating and melting at 70-110 ℃, impregnating the reinforcing material under the rolling action, and cooling and rolling through a cooling section to obtain the prepreg roll.

Step three: and (4) compression molding.

And (3) superposing the upper surface layer and the lower surface layer of the prepreg and the inner layer of the foam core material, laying the laminated sheets in a mold, and preparing the composite material packing boxboard by adopting a compression molding method, wherein in the compression molding method, the molding temperature is 120-140 ℃, the molding time is 3-6 min, and the molding pressure is 0.4-3 MPa. The composite material packing box board is assembled to obtain the composite material packing box-1.

[ example 2 ]

The invention provides an antistatic composite material packing box, and a preparation method of the antistatic composite material packing box comprises the following steps:

the method comprises the following steps: a powdered epoxy resin composition is prepared.

100 parts of bisphenol F epoxy resin, 16 parts of curing agent modified dicyandiamide, 3 parts of curing accelerator organic urea, 20 parts of toughening agent low molecular polyamide, 20 parts of styrene maleic anhydride, 6 parts of home-made aluminum powder of a conductive filler, 8 parts of zinc oxide, 2 parts of isopropyl triisostearate, 10 parts of polyethylene wax and 5 parts of anti-yellow benzoin.

Adding the raw materials into a high-speed mixer, stirring and mixing for 1-5 min, then feeding the raw materials into an extruder, carrying out melt extrusion at 70-100 ℃, cooling and coarsely crushing the raw materials by a tablet machine, feeding the raw materials into an ACM (Acrylonitrile-butadiene-styrene) mill, finely crushing the raw materials, and screening the raw materials by a cyclone separator to obtain the powdery epoxy resin composition.

Step two: and (3) preparing a prepreg.

The reinforcing material is twill basalt fiber cloth with the gram weight of 300g/m². The prepreg comprises 35-80 wt% of the cyclic resin composition based on 100 parts by weight of the prepreg.

Uniformly scattering the powdery epoxy resin composition onto the reinforcing material through a powder scattering device, heating and melting at 70-110 ℃, impregnating the reinforcing material under the rolling action, and cooling and rolling through a cooling section to obtain the prepreg roll.

Step three: and (4) compression molding.

And (3) superposing the upper surface layer and the lower surface layer of the prepreg and the inner layer of the foam core material, laying the laminated sheets in a mold, and preparing the composite material packing boxboard by adopting a compression molding method, wherein in the compression molding method, the molding temperature is 120-140 ℃, the molding time is 3-6 min, and the molding pressure is 0.4-3 MPa. The composite material packing box board is assembled to obtain the composite material packing box-2.

[ example 3 ]

The invention provides an antistatic composite material packing box, and a preparation method of the antistatic composite material packing box comprises the following steps:

the method comprises the following steps: a powdered epoxy resin composition is prepared.

Weighing 100 parts of novolac epoxy resin, 18 parts of curing agent isophorone diamine, 5 parts of curing accelerator triphenylphosphine, 30 parts of flexibilizer polyvinyl formal, 10 parts of amino-terminated butadiene-acrylonitrile rubber, 4 parts of conductive filler graphene, 10 parts of rutile titanium dioxide, 1 part of tetra-n-butyl zirconate, 8 parts of stearate and 5 parts of anti-yellowing benzoin.

Adding the raw materials into a high-speed mixer, stirring and mixing for 1-5 min, then feeding the raw materials into an extruder, carrying out melt extrusion at 70-100 ℃, cooling and coarsely crushing the raw materials by a tablet machine, feeding the raw materials into an ACM (Acrylonitrile-butadiene-styrene) mill, finely crushing the raw materials, and screening the raw materials by a cyclone separator to obtain the powdery epoxy resin composition.

Step two: and (3) preparing a prepreg.

The reinforcing material is chopped strand mat with the gram weight of 300 g/m². The prepreg comprises 35-80 wt% of the cyclic resin composition based on 100 parts by weight of the prepreg.

Uniformly scattering the powdery epoxy resin composition onto the reinforcing material through a powder scattering device, heating and melting at 70-110 ℃, impregnating the reinforcing material under the rolling action, and cooling and rolling through a cooling section to obtain the prepreg roll.

Step three: and (4) compression molding.

And (3) superposing the upper surface layer and the lower surface layer of the prepreg and the inner layer of the foam core material, laying the laminated sheets in a mold, and preparing the composite material packing boxboard by adopting a compression molding method, wherein in the compression molding method, the molding temperature is 120-140 ℃, the molding time is 3-6 min, and the molding pressure is 0.4-3 MPa. The composite material packing box board is assembled to obtain the composite material packing box-3.

The antistatic composite material packing boxes prepared in the three embodiments are respectively numbered as 1, 2 and 3, and are subjected to surface resistivity test, and the test results are as follows according to GB/T1410-:

numbering	1	2	3
				Surface resistivity/omega	108	107	107

By combining the embodiments, the antistatic composite material packing box has the advantages of good antistatic performance, high strength, better protection on the contents, convenience in cyclic use, long service life and good social and economic benefits.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the scope of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.