High-content fluorine-containing polymer processing master batch and preparation method thereof

Abstract

The invention discloses a high-content fluorine-containing polymer processing master batch, comprising the following components in percentage by weight: 70%-90% of fluorine-containing polymer and 10%-30% of active polyol stearate. The fluorine-containing polymer preferably is tetrafluoroethylene-hexafluoropropylene copolymer, and the active polyol stearate is selected from pentaerythritol double stearate and pentaerythritol tristearate. The invention also discloses a preparation method of the high-content fluorine-containing polymer processing master batch. The master batch produced by the process does not contain carrier resin, avoids the problem of compatibility with resin and has the characteristics of wide generality and high lubrication efficiency. The content of effective elements is up to 70%-90%, the addition amount is small, heating operation is not used in the preparation process, the process is simple, the production device is easy to get, and the operability is strong.

Description

technical field [0001] The invention relates to a fluorine-containing polymer processing masterbatch and a preparation method thereof, in particular to a high-content fluorine-containing polymer processing masterbatch and a preparation method thereof. Background technique [0002] It is well known that high molecular weight polymers can be formed by using a rotating screw to push a viscous polymer melt through an extruder barrel into a die, forming the polymer into the desired shape, and then cooling and solidifying it into a product with the general shape of the die. , such as hydrocarbon polymers and polyamides, are melt-extruded into shaped structures such as pipes, conduits, cable sheaths or films. [0003] In order to obtain low production costs, it is desirable to extrude polymers at high rates. Higher extrusion rates can easily be obtained by increasing the extruder screw speed. However, this technique is limited due to the viscoelastic properties of polymeric subst...

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Problems solved by technology

[0013] The technologies disclosed in the above patents have the following deficiencies to varying degrees, which limit their application and promotion

[0014]①Poor versatility

Patents ZL 02813017.0, CN 1352668A and ZL 200610092819.0 all prepare masterbatches by heating granulation technology, which consumes a lot of energy and is prone to side reactions during the heating granulation process, such as thermal degradation of surfactants and oxidation of active groups Wait

[0017]④Complicated preparation process

Patent CN101792536A provides a method for preparing high-content masterbatch at room temperature, but due to the use of water or water and alcohol or / and ketone, there are post-processing procedures such as drying or solvent recovery, which increases the complexity of the preparation process

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