Application of the hottest antistatic agent in pol

2022-08-24
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Application of antistatic agents in polyolefin packaging materials

the demand for plastics in China's packaging industry is growing, with an average annual growth rate of 10%. There are many kinds of plastic packaging materials. Polyolefins account for a large proportion of them because of their low price, excellent performance and easy addition and decomposition temperature of 443 ℃. Plastic packaging products should not only meet the functions of containing items, but also meet the requirements of color printing, compounding in the manufacturing process and automatic packaging in the use process. The above links require plastic packaging materials to have anti-static function. Processing applicability of antistatic master batch antistatic agent is generally added in the form of master batch. The physical properties of antistatic masterbatch are particularly important for the performance of antistatic agents, and the melt index is one of the important items. When selecting the carrier resin of master batch, in order to ensure the uniform dispersion of antistatic agent, the brand with high melt index is usually selected

antistatic agents are mostly the mixture of surfactants, which can play a lubricating role in the resin system and further improve the melt index of antistatic masterbatch. However, the increase of melt index varies with the composition of antistatic agent system. Application in PP ASA, ash, ASP series antistatic agents developed by Beijing Research Institute of chemical industry are compounded by a variety of non-ionic surfactants. ASB series antistatic agents are composed of organic boron surfactants and other non-ionic surfactants. Two antistatic agents ab-33 and asa-51 were selected to make masterbatches, which were blended with the base resin to make standard injection parts (tablets) and CPP films. The results were as follows:

in CPP film products, the antistatic effects of asa-51 and ab-33 were basically the same; In the injection products, the initial effect of ab-33 is not obvious. After being placed for a period of time (two weeks), its antistatic effect gradually comes into play. This is related to the structural composition of asa-51 and ab-33. A considerable proportion of components in asa-51 migrate faster and have obvious antistatic effect at the initial stage. The main component of ab-33 is boron containing compound with special structure, and the migration speed of each component is slow. This effect is not obvious in delaying the antistatic effect due to the short migration distance of additives in thin-film products, while it is not prominent in the initial antistatic effect in thick products

however, this feature can also be used in some specific occasions, such as those where the initial precipitation of functional additives in the film is required to be less, which has little impact on the initial strength of the adhesive, or where the electrostatic effect of the product is required to have a relatively long later persistence. Application in PE the surface resistance data of PE blown film shows that under the determined ambient temperature and humidity, the antistatic effect of several antistatic agents is significant, among which asa-51, ash-1 and asp-2 have obvious effects, while ab-33 has relatively poor antistatic effect in the initial stage, which is consistent with the application in PP

asa-40 antistatic agent has better initial antistatic effect than the above products. With less dosage, the efficiency can be balanced in a short time, showing better antistatic effect and good compatibility with resin

in addition, using the above antistatic agents in cast polyethylene film (CPE) products and foamed PE pearl cotton products has significant antistatic effect and has no adverse effect on the surface properties (CPE film) and processability (PE pearl cotton) of the products, which can meet this. We will have the latest products in every market field to meet the requirements of market demand product manufacturers. Application in BOPP film production this method selects the antistatic masterbatch p5115 and takes the domestic as-x antistatic masterbatch as the control to produce BOPP film on the three-layer coextrusion production line of Guangzhou Petrochemical Tianyi film factory. The base material is T36F homopolymer PP resin of Qilu Petrochemical, and the addition amount of antistatic masterbatch is 3.3%. Test according to normal production process conditions (extrusion system 235 ℃ -250 ℃, longitudinal tension 160 ℃ -185 ℃) 19 μ M light film, the production process is stable in the test process, and the film formation is normal, indicating that the antistatic agent has no adverse effect on the processing technology of BOPP

the manufacturer's test on the film also shows that the initial antistatic performance of p5115 masterbatch is basically equivalent to that of the production material. The experimental masterbatch has little effect on corona treatment (surface wetting tension) and film strength, and the experimental masterbatch is also equivalent to the production material in terms of antistatic durability. The experiments show that the film obtained by using p5115 masterbatch has low haze and high surface quality

the anti-static effect is sensitive to environmental humidity, and the effect of applying anti-static agents in different seasons is quite different. However, the test data show that although antistatic agents are affected by the dry environment, several new antistatic agents have little impact on the humidity of outfitters? The influence of antistatic agents on the surface quality of products. Packaging materials have high requirements for antistatic agents and color masterbatches, especially for film materials. Its influence on the surface quality of products must be investigated. The production practice of polypropylene cast film and BOPP film for many times shows that the addition of antistatic masterbatches p5115, pb3315, ph115 and pb215 has little effect on the transparency and haze of the film, which can meet the requirements of antistatic masterbatches for film products. The surface quality data of polypropylene casting film with these antistatic masterbatches are shown in the table above

health safety of antistatic agents because packaging materials often contact with food, cosmetics, drugs, etc., and because the product quality is further improved, the health safety of additives used in packaging materials greatly affects their application. Most of the newly developed antistatic agents do not contain toxic substances, which can meet the safety requirements of packaging materials. The inspection results of the Institute of labor health and occupational diseases of the Chinese Academy of preventive medicine show that asa-51, ab-31, ash-1 and asp-2 are actually non-toxic substances, which can be used in packaging materials in contact with food. Asa-40 is a low toxic product, but it has no pungent smell in production and use. It can be used in the non food packaging field if it has provided dental materials for customers to carry out compression tests

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