The key technology of the hottest vapor phase anti

2022-08-16
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Key technologies of vapor phase antirust plastic film (Part 2)

v. production precautions

(1) the particle size of grinding in fluidized bed jet mill should meet the specified requirements. Around the particle size requirements, adjust the equipment process parameters to maximize the output, stabilize the product quality and improve the operation of the equipment on the premise of meeting the particle size requirements

(2) during the production of VCI masterbatch, ensure that the materials are at the specified melt temperature and that the materials are evenly mixed. Therefore, through adjustment and test, the dynamic process parameters are determined to make the melt temperature always conform to the specified temperature curve, and the accuracy error is within 1%. And ensure the continuous production, and maximize the output on the premise of ensuring product quality

(3) in the process of blowing film, ensure that the maximum heating temperature of each section is below 200 ℃. Therefore, it is necessary to explore the equipment and process parameters, and determine the different temperature curves of different equipment on the premise of ensuring normal production, with the accuracy error within 1%

VI. technical indicators and technical standards of vapor phase antirust plastic film

vapor phase antirust plastic film has been produced so far and is relatively mature in terms of formula, production process and practical application. Some countries have also formulated corresponding vcif standards. In 1962, the United States issued the military specification of "flexible sealable transparent barrier material treated with vapor phase inhibitor". After three revisions, it has been developed into version D, namely mil-prf-22019d (August 31, 1998). It stipulates the classification, technical indicators, inspection, acceptance, marking, packaging, storage and transportation of vcif, which has become the basic standard and main basis for international production, development and use of vcif products; Japan also formulated jis-z-1901 (version 63) "rust proof" vinyl film in the early stage, and later developed into jis-z-2912. Up to now, Japan has canceled the special standard of vcif, which may be related to the failure to completely solve some problems in the manufacturing and use of this product; There are almost no national standards for vcif products in other countries

the early vcif quality standard in China was stipulated in gb4879-85 "rust proof packaging". When the standard was revised in 1999, the quality index requirements of vcif were cancelled and changed to the national recommended standard gb/t4879-1999 "rust proof packaging". One of the main characteristics of graphene is its superior heat dissipation performance. The Ministry of machinery issued the recommended standard jb/t6067-92 "vapor phase antirust plastic film" in 1992, and the technical indicators are quite different from those in gb4879-85; In 1996, China transformed mil-b-22019c into a national military standard with basically the same content. At present, China's national standard for vapor phase antirust plastic film is being formulated and will be released and implemented next year

VII. Characteristics of vapor phase antirust plastic film:

1. The appearance is transparent, and the packaging content and surface state can be clearly understood without removing the packaging

2. It has good flexibility and can bend with the shape of the package without damage

3. sealable. According to different needs, it can be processed into plastic bags of different specifications, and can be sealed and welded to form, with good sealing performance

4. Easy to operate. It can save the oiling before packaging or the cleaning after unsealing. Because graphene is a good conductor washing process, it has the characteristics of cleaning, low labor intensity and reducing the cost of packaging equipment

5. The reason why there is no large-scale utilization between production areas and processes at present is mainly the transportation volume of cost and production efficiency, and can improve the packaging efficiency. From the perspective of the whole antirust packaging, it is much more economical than the oil seal method; For testers to choose

6. The rust prevention period is long, and vcif is used for sealing. Generally, there is no need to replace the packaging for 3 ~ 5 years, and some can be sealed for more than 10 years without rusting

7. The appearance of the package is exquisite, which improves the decoration of the product, and different colors and specific marks can be adopted according to the different requirements of users

8. it can be used for anti rust packaging of oil repellent products. It can replace oiling and rust prevention

9. it can be degraded and recycled, saving energy and beneficial to environmental protection

VIII. Use of vapor phase antirust plastic film

vapor phase antirust plastic film has a wide range of applications, and can be used for antirust sealing and packaging of steel, cast iron, copper, brass, bronze, aluminum, galvanized plate, tinplate, silicon steel sheet and other metals and any form of industrial products. The products can meet the packaging of metal products of different specifications, from mechanical parts as small as a few millimeters to the whole aircraft. Applicable fields include: automobile industry, ship and aircraft industry, light machinery industry, precision machinery industry, electrical and electronic industry, metal smelting, processing industry, military industry and other metal fields

at present, VCI paper is the typical VCI packaging material with the largest consumption in the world. The total consumption of major industrial countries is more than 100000 tons, and the domestic consumption is also close to the level of 10000 tons. It is worth noting that most of the VCI papers use paper/plastic composites as carriers. Due to the relationship between separation technology and separation cost, this paper/plastic composite waste packaging can not be recycled, nor can it be naturally degraded, but can only be incinerated, which not only wastes resources, but also causes environmental pollution. Since the late 1990s, many countries or regions have begun to prohibit or restrict the use of paper/plastic composites. Therefore, it can be predicted that the upgrading of VCI packaging materials is not only an inevitable trend, but also will be carried out at a faster speed

Sun Kai Shenyang antirust packaging materials Co., Ltd.

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