Non-migration and non-transferable high-temperature smooth master batch and preparation process thereof

Abstract

The invention discloses a non-migration and non-transferable high-temperature smooth master batch and a preparation process thereof, and provides a smooth master batch with a stable friction coefficient, the smooth master batch comprises co-polypropylene, modified polysiloxane, silicon dioxide and a composite antioxidant, after the smooth master batch is added to a film, stable smooth performance can be obtained, no influence is caused by migration or high temperature, the product quality is stable, and the production efficiency is improved; the special structure has good compatibility with resin, can be anchored in the resin and does not transfer, for example, the special structure is added to a film heat sealing surface and does not migrate or transfer to a corona surface, so that the corona effect is not influenced, and no negative effect is generated on later aluminum plating and compounding effects; the molecular weight is higher, the heat resistance is good, yellowing is avoided, and the appearance quality of the film is not influenced; VOCs are low, odor is low, and environment friendliness and safety are achieved; the use amount is small, but the smooth performance is stable, the problem that a conventional migration smooth master batch affects film corona is avoided, and meanwhile the problem that a conventional silicone master batch is large in addition amount and affects film haze is solved; silicon dioxide can be used as an anti-blocking agent, so that the opening smoothness of the film is improved.

Description

technical field [0001] The present invention relates to the field of functional polymer materials, and more specifically relates to a non-migrating and non-transferring high-temperature smooth masterbatch and its preparation process. Background technique [0002] In the prior art, the patent CN 108582824 A discloses a BOPP film for anti-hardening super-cool cigarette rods and its preparation method. It uses ultra-high molecular weight silicone beads as a smooth masterbatch and mainly utilizes its bead structure. The smoothness is used to achieve the anti-hardening effect, which points out that the smooth masterbatch is ultra-high molecular weight silicone beads, and its state is solid, so it has the effect of anti-hardening when added to the film. The main use is its bead-like structure to achieve physical Smooth, but this kind of bead is easy to powder off, especially for the surface layer of BOPP, which is only about 1 micron; [0003] Patent CN108656688 discloses a speci...

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Problems solved by technology

[0007] The present invention is aimed at the shortcomings in the prior art: 1. In order to ensure the aluminum plating effect of the normal aluminum plating film, any migratory smoothing agent such as erucamide, oleamide, stearamide, etc. cannot be used in the industry, because The migratory slip agent is easy to migrate or transfer to the corona surface, thereby affecting the fastness of the aluminum layer and the film substrate after aluminizing. In order to make the film have good opening and processability, it is generally achieved by adding an anti-adhesive masterbatch , If you want to reduce the coefficient of friction, use spherical anti-sticking particles, but the lowest coefficient of friction can only be 0.5, some special aluminum-coated films or increase production speed, the market needs a lower coefficient of friction 0.3, just can be added by adding the present invention The product is realized, because it does not migrate, it also transfers, so it does not affect the corona, reduces the friction coefficient and avoids the impact on the later aluminum plating, and also uses the market common silicone masterbatch (dimethyl silicone oil, or vinyl Silicone oil) has been tested, and there are generally two problems. If the smoothness can meet the requirements, generally the molecular weight of silicone oil is relatively low, within 50,000. High, and its smoothness is difficult to meet the requirements; 2. Because the composite film needs to be composited and bag-made in the later stage, it is generally required that the base film has a good and stable friction coefficient from the composite to the bag-making, and the composite strength of the base film is Very good, the routine use of erucamide-based migratory products can ensure that the heat-sealing layer of the base film has very good smoothness, but because erucamide-based products are migratory and not heat-resistant, if the base film is added Less, after compound curing, erucamide will fail, which will lead to a rise in the friction coefficient of the film, which will affect the later bag making, or if the amount added is too high, the friction of the composite film may be guaranteed to be still low after compound curing, but it is often prone to precipitation , the transfer affects the composite strength of the film. In addition, in the current solvent-free composite process, reactive adhesives are usually used. Erucamide is a primary amine, which is easy to react with the NCO group of the curing agent in the adhesive and consumes the curing agent. thus affecting the composite strength

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