A transparency modifier for vapor phase antirust film
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A gas-phase anti-rust and modifier technology, applied in the field of transparency modifier, can solve the problems of unevenness, abnormal color of anti-rust film, and reduce the appearance quality of products, and achieve the effect of high transparency
Active Publication Date: 2022-03-04
河北环宸科技有限公司
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Problems solved by technology
The anti-rust core components added to the existing gas-phase anti-rust film, there are two situations that will cause the color change of the anti-rust film. One is that some components are affected by ultraviolet rays in natural light, and the structure gradually changes, and then presents a certain color ; Second, due to the influence of high temperature in the processing process, the original colorless component structure changes, resulting in abnormal color (light yellow or pink) of the anti-rust film, and it may be uneven, which reduces the appearance quality of the product
The third is that during the processing, under the action of high temperature, the degree of polymerization and crystallinity of the polyethylene polymer chain decreases, resulting in a decrease in transparency
[0005] However, as the application of gas-phase anti-rust film becomes wider and wider, users put forward higher requirements for transparency. Traditional gas-phase anti-rust film cannot meet the requirements, but changing the composition of anti-rust additives requires a large number of formula screening tests and investment in research and development. The cost is very high, so there is a need for users and manufacturers to improve the transparency of the vapor phase antirust film
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Embodiment 1
[0036] A preparation method of a vapor phase antirust film, the steps are as follows:
[0037] (1) Preparation of transparency modifier: according to FLAMESTAB NOR 116 60%, 2-(2'-hydroxy-5'-methylphenyl) benzotriazole 14%, peroxide cross-linked polyethylene 18%, The proportion of copolymerization modifier is 8% and the raw material is weighed, the temperature of the twin-screw extruder is set to 140°C, the above is added to it, mixed and extruded to obtain the transparency modifier;
[0038] (2) Preparation of vapor phase antirust film: according to high pressure polyethylene 2426 29%, linear polyethylene 7042 39%, metallocene polyethylene 20%, vapor phase antirust masterbatch 10%, transparency improver 2%, at a temperature of 150 ℃ Next, the raw material is placed in the blown film equipment and blown into a film with a thickness of 0.1mm.
Embodiment 2
[0040] A preparation method of a vapor phase antirust film, the steps are as follows:
[0041] (1) Preparation of transparency modifier: according to FLAMESTAB NOR 116 72%, 2-(2'-hydroxy-5'-methylphenyl) benzotriazole 10%, peroxide cross-linked polyethylene 12%, The ratio of 6% of the copolymerization modifier is to weigh the raw materials, set the temperature of the twin-screw extruder to 140°C, add the above, mix and extrude and granulate to obtain the transparency modifier;
[0042] (2) Preparation of vapor phase antirust film: according to high pressure polyethylene 2426 29%, linear polyethylene 7042 39%, metallocene polyethylene 20%, vapor phase antirust masterbatch 10%, transparency improver 2%, at a temperature of 150 ℃ Next, the raw material is placed in the blown film equipment and blown into a film with a thickness of 0.1mm.
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Abstract
The invention provides a transparency modifier for a vapor phase antirust film, belonging to the technical field of antirust film preparation. The transparency modifier of the vapor phase antirust film of the present invention consists of FLAMESTAB NOR 116, 2-(2'-hydroxyl-5'-methylphenyl) benzotriazole, peroxide cross-linked polyethylene, copolymer modifier composition. Under the joint action of FLAMESTAB NOR 116 and 2‑(2′‑hydroxy‑5′‑methylphenyl) benzotriazole, the antirust additives in the gas phase antirust film can be used in the blown film process and later The structure is stable and no colored substances are generated; under the joint action of peroxide crosslinked polyethylene and copolymerization modifier, the polyethylene resin maintains its crystallinity and regularity during the film blowing process, thereby maintaining its own Higher transparency, thereby improving the transparency of the vapor phase antirust film.
Description
technical field [0001] The invention relates to the technical field of antirust film preparation, in particular to a transparency modifier for gas phase antirust film. Background technique [0002] Vapor phase antirust film is a metal antirust plastic film that has gradually emerged in recent years. The vapor phase corrosion inhibitor contained in it can automatically volatilize to the metal surface, and the vapor phase corrosion inhibitor forms a protective layer on the metal surface to inhibit corrosion. The role of metal corrosion. Vapor phase antirust film has the characteristics of long antirust period, easy operation, wide application scenarios and low cost. It is a metal protective packaging material that has developed rapidly in recent years and is of great significance to the metal processing industry. [0003] At present, vapor phase anti-rust films are all made of polyethylene resin as the base material, and volatile chemical substances are added to it. Since mos...
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