A kind of granulation method of pellets for coating film, pellets and application thereof

A technology for coating film and granules, which is applied to the granulation method of granules for coating film and its granules and application fields, can solve the problems of easy occurrence of bubbles and film breakage, prevent thermal decomposition, and improve mechanical properties. , The effect of uniform discharge

Active Publication Date: 2021-10-08
CIXI LANXING PLASTIC & RUBBER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steps of this process are simple, and the components are not fully mixed before extrusion, so that the components are fully dispersed in the combination, and the prepared pellets are prone to bubbles, spots or even film breakage when used in the preparation of films. occurrence of phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 100 parts of SBS, 2 parts of light calcium carbonate and 6 parts of paraffin base oil into the mixer, then stir at 160°C at a speed of 60r / min for 10 minutes, then at a temperature of 150°C, adjust the speed to 50r / min min, put 0.5 part of p-phenylenediamine and 0.5 part of 2,8-di-tert-butyl-4-methylphenol and 1 part of 2,5-dimethyl-2,5-bis(tert-peroxide Butyl)hexane was stirred for 5 minutes, then at a temperature of 160°C, the speed was adjusted to 40r / min, and 0.5 parts of 2,2,6,6-tetramethylpiperidone and 0.5 parts of stearic acid were put into the mixer and 4 parts of paraffin base oil and then stirred for 8 minutes, and then the uniformly mixed rubber material was put into a twin-screw extruder for extrusion, and pelletized by a pelletizer to obtain pellets for coating film. The above components are all measured by mass fraction.

Embodiment 2

[0034] Add 100 parts of SBS, 4 parts of light calcium carbonate and 7 parts of paraffin base oil into the mixer, then stir at 175°C at a speed of 65r / min for 15 minutes, then at a temperature of 160°C, adjust the speed to 55r / min min, put 0.75 parts of p-phenylenediamine and 0.75 parts of 2,8-di-tert-butyl-4-methylphenol and 1.5 parts of 2,5-dimethyl-2,5-bis(tert-peroxide Butyl)hexane was stirred for 7 minutes, then at a temperature of 175°C, the speed was adjusted to 45r / min, and 1 part of 2,2,6,6-tetramethylpiperidone and 1 part of stearic acid were put into the mixer and 3 parts of paraffin base oil and then stirred for another 7 minutes, and then the uniformly mixed rubber material was put into a twin-screw extruder for extrusion, and pelletized by a pelletizer to obtain pellets for coating film. The above components are all measured by mass fraction.

Embodiment 3

[0036]Add 100 parts of SBS, 5 parts of light calcium carbonate and 10 parts of paraffin base oil into the mixer, then stir at 190°C at a speed of 65r / min for 15 minutes, then at a temperature of 170°C, adjust the speed to 55r / min min, put 0.75 parts of p-phenylenediamine and 1 part of 2,8-di-tert-butyl-4-methylphenol and 1.75 parts of 2,5-dimethyl-2,5-bis(tert-peroxide Butyl)hexane was stirred for 7 minutes, then at a temperature of 180°C, the speed was adjusted to 45r / min, and 2 parts of 2,2,6,6-tetramethylpiperidone and 0.5 parts of stearic acid were put into the mixer and 5 parts of paraffin base oil and then stirred for another 7 minutes, and then the uniformly mixed rubber material was put into a twin-screw extruder for extrusion, and pelletized by a pelletizer to obtain pellets for coating film. The above components are all measured by mass fraction.

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Abstract

The invention relates to a method for granulating pellets for coating films, pellets and applications thereof. On the one hand, the granulation method of the present invention includes: adding the main resin, inorganic filler and part of the softener into the mixer for stirring and mixing, then raising the temperature to adjust the rotation speed, and then putting in the antioxidant and crosslinking agent, and finally putting in the stabilizer and the remaining softener, Then extrude and granulate on a twin-screw extruder to obtain pellets for coating film. In another aspect of the present invention, the prepared pellets for the coating film are cast and cooled to obtain a coating film. The coating film has excellent mechanical properties, weather resistance and water resistance, and can be used for the surface coating of automobile foam materials. cover.

Description

technical field [0001] The invention relates to a granulation method of resin granules, the granules and applications thereof, in particular to a granulation method of the granules for coating films, the granules and applications thereof. Background technique [0002] At present, the coating film materials used for automobile foam materials mainly include thermoplastic elastic paint materials such as SBS, POE, TPVC, and TCPE. Thermoplastic elastic has a wide range of hardness, high strength, and has excellent weather resistance, oil resistance and processability. However, due to the fact that thermoplastic elastomers are easy to hydrolyze, easy to decompose at high temperatures, and high in price, if they are not modified, they will be used in automobiles. There are often many problems in the practical application of foam materials. [0003] US200408116A1 discloses an oriented thermoplastic elastomer film and its preparation method. The film includes a dynamically vulcanize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L27/06C08L23/08C08L91/06C08K13/02C08K3/26C08K5/18C08K5/13C08K5/14C08K5/09C08K5/3435C08K3/34C08J5/18B29B9/06
CPCB29B9/06C08J5/18C08J2327/06C08J2353/02C08J2423/08C08J2427/06C08J2491/06C08L27/06C08L53/02C08L2203/16C08L2205/03C08L2205/035C08L91/06C08K13/02C08K2003/265C08K5/18C08K5/13C08K5/14C08K5/09C08K5/3435C08L23/0815C08K3/346
Inventor 刘群江
Owner CIXI LANXING PLASTIC & RUBBER IND
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