Double-layer environment protection gas-phase rust-proofing film membrane and preparation method thereof

A gas-phase anti-rust and thin-film technology, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problem of polluting metal or metal products, reducing the anti-rust performance of the film, and failing to achieve anti-rust effects, etc. problem, to achieve the effect of good isolation or shielding, good anti-rust performance, and good economic benefits

Inactive Publication Date: 2008-08-27
WUHAN IRON & STEEL (GROUP) CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter whether it is a coated plastic anti-rust film or a blown plastic anti-rust film, there are still deficiencies: the former will transfer its vapor phase corrosion inhibitor (VCI) coating to the packaged material during packaging and use. The surface of the material, thereby contaminating the metal or metal products being packaged
Although the latter has a certain sealing, high waterproof and long-term antirust performance, on the one hand, most of its vapor phase corrosion inhibitors (VCI) contain nitrite such as dicyclohexylamine nitrite, etc. The harm to the human body is extremely great, and it can no longer meet the requirements of today's

Method used

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  • Double-layer environment protection gas-phase rust-proofing film membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, weigh 1kg of gas-phase corrosion inhibitor (VCI) raw material sodium tetraborate, 2kg of ammonium molybdate, 3kg of cyclohexylamine laurate, 0.3kg of polyethylene wax as a raw material for dispersing lubricant, and 2.5kg of EVA as a carrier plastic material. After mixing evenly, put it into a high-speed mixer and mix for 20 minutes. The friction heat generated by the high-speed mixer will make the EVA particles sticky, and the polyethylene wax will melt under the action of shear heat. The raw materials are naturally cooled, and then put into a granulator for granulation to obtain prepared additive granules.

[0023] Then, take the inner release layer plastic raw material LLDPE72kg and LDPE18kg, mix it with the prepared additive granules evenly, and put it into the inner layer extrusion barrel of the blow molding machine; simultaneously weigh the outer shielding layer plastic raw material LDPE31.2kg, Put it into the outer extrusion barrel of the blow molding machi...

Embodiment 2

[0026] First, weigh 2kg of gas phase corrosion inhibitor (VCI) raw material sodium tetraborate, 1kg of ammonium molybdate, 1.5kg of cyclohexylamine laurate, 0.2kg of polyethylene wax as a raw material for dispersing lubricant, and 2.0kg of EVA as a carrier plastic material. After the parts are mixed evenly, put them into the high-speed mixer and mix for 20 minutes. The frictional heat generated by the high-speed mixer will make the EVA particles sticky, and the polyethylene wax will melt under the action of shear heat. When the VCI is evenly adhered to the EVA The material is discharged, cooled naturally, and then put into a granulator for granulation to obtain prepared additive granules.

[0027] Then, take the inner release layer plastic raw material LLDPE64kg and LDPE16kg, mix it with the prepared additive granules evenly, and put it into the inner layer extrusion barrel of the blow molding machine; simultaneously weigh the outer shielding layer plastic raw material LDPE53.3...

Embodiment 3

[0030] First, weigh 1.5kg of gas phase corrosion inhibitor (VCI) raw material sodium tetraborate, 1.5kg of ammonium molybdate, 1.5kg of cyclohexylamine laurate, 0.3kg of polyethylene wax as raw material for dispersing lubricant, and 1.5kg of carrier plastic raw material EVA. After the components are mixed evenly, put them into the high-speed mixer and mix for 20 minutes. The frictional heat generated by the high-speed mixer will make the EVA particles sticky, and the polyethylene wax will melt under the action of shear heat. When the VCI evenly adheres to the EVA The material is discharged at the same time, and after natural cooling, it is put into the granulator for granulation to obtain the prepared additive granules.

[0031]Then, take the inner release layer plastic raw material LLDPE48kg and LDPE12kg, mix it with the prepared additive granules evenly, and put it into the inner layer extrusion barrel of the blow molding machine; simultaneously weigh the outer shielding laye...

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Abstract

Disclosed are a double-layer environmental friendly volatile corrosion inhibitor film and a process for preparation thereof. The film is formed by co-extruding and film-blowing of an outer shielding layer and an inner release layer, in the inner release layer according to the weight ratio, plastics and modified plastics or combination of the plastics and the modified plastics takes 90-95%, and additive takes 5-10%. The additive is composed of volatile corrosion inhibitor of 65-80%, dispersing lubricant of 2-5% and carrier plastic of 15-30% according to the weight ratio. The volatile corrosion inhibitor employs combination of sodium borate, ammonium molybdate and cyclohexylamine laurate. The process of preparation of the invention is composed of firstly mixing and granulating raw material of the volatile corrosion inhibitor, the dispersing lubricant and the carrier plastic of the additive, then uniformly mixing additive particles and plastic raw material of the inner release layer, inputting in an inner layer of a plastic blowing machine to extrude to a bucket, simultaneously inputting raw material of the outer shielding layer into an outer layer of the plastic blowing machine to extrude to the bucket, then co-extruding and film-blowing, and manufacturing out the double-layer environmental friendly volatile corrosion inhibitor film. The double-layer environmental friendly volatile corrosion inhibitor film has the advantages of zero toxic component, good rust-proofing effect and low cost, and is adaptable to rustproof packaging of various metal materials.

Description

technical field [0001] The invention relates to a film material capable of adapting to the non-toxic and anti-rust packaging requirements of various metal products, in particular to a double-layer environment-friendly gas-phase anti-rust film and a preparation method thereof. Background technique [0002] For the packaging of metal products, especially cold-rolled steel products, traditional packaging materials generally fall into the following two categories: one is vapor phase antirust paper covered with a very thin plastic film, and this type of packaging paper has poor toughness and is easy to break , its packaging often gets water in the process of transportation or storage. After a period of water ingress, the corrosion inhibitor fails, and the anti-rust oil film layer is destroyed, causing metal products to rust; This kind of anti-rust paper has better toughness and is not easy to be damaged, but it is thicker, harder, and not easy to seal. Moisture or water can easil...

Claims

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Application Information

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IPC IPC(8): B65D65/40B32B27/06B32B27/18B29B7/00B29B9/10B29C49/04
Inventor 刘建容方彩珍陈平杨文斌吕建华李汉春黄先球蔡捷
Owner WUHAN IRON & STEEL (GROUP) CORP
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