Cleanser for colored plastic processing equipment and preparation method for same

A technology for processing equipment and cleaning agents, which is applied in the field of composite polymer materials and its processing, can solve the problems of endangering the health of employees, unsatisfactory effects, and reducing the service life of equipment, so as to reduce the phenomenon of broken bars and powder floating Phenomenon, the effect of accelerating the discharge rate

Active Publication Date: 2017-02-01
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a twin-screw cleaning agent is prepared by using matrix resin and inorganic powder as raw materials, but the cleaning agent uses a large amount of inorganic powder or modified inorganic powder, which will affect the production environment. It will also endanger the health of employees; in addition, there are solid screw cleaning agents prepared from matrix resin, glass fiber, toughening agent, etc., but this type of cleaning agent contains a large amount of glass fiber, which will cause serious damage to the equipment during use. Large wear and tear, reducing the service life of the equipment
And the effect of the above-mentioned cleaning agent is not very satisfactory especially when it is used for cleaning colored pigments, and a small amount of residual color will still appear in the next batch of products

Method used

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  • Cleanser for colored plastic processing equipment and preparation method for same
  • Cleanser for colored plastic processing equipment and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 50 parts of polypropylene resin, 50 parts of polystyrene resin, 10 parts of styrene-butadiene-styrene block copolymer, 80 parts of calcium carbonate masterbatch, 5 parts of hyperdispersant and 5 parts of antioxidant, Put the weighed raw materials of each component into the mixer and mix them thoroughly for 5 minutes to obtain a premix; put the obtained premix into a twin-screw extruder for melt extrusion and strand granulation to obtain colored plastic processing Cleaning agent for equipment, wherein the process parameters of the twin-screw extruder are: the temperature of the first zone is 160°C, the temperature of the second zone is 180°C, the temperature of the third zone is 180°C, the temperature of the fourth zone is 180°C, and the temperature of the fifth zone is 180°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 180°C, the temperature of the eighth zone is 180°C, the temperature of the ninth zone is 180°C, the temperatu...

Embodiment 2

[0036] Weigh 40 parts of polypropylene resin, 60 parts of polystyrene resin, 5 parts of styrene-butadiene-styrene block copolymer, 60 parts of calcium carbonate masterbatch, 1 part of hyperdispersant and 1 part of antioxidant, Put the weighed raw materials of each component into the mixer and mix them thoroughly for 10 minutes to obtain a premix; put the obtained premix into a twin-screw extruder for melt extrusion and strand granulation to obtain colored plastic processing Cleaning agent for equipment, wherein the process parameters of the twin-screw extruder are: the temperature of the first zone is 170°C, the temperature of the second zone is 190°C, the temperature of the third zone is 190°C, the temperature of the fourth zone is 190°C, and the temperature of the fifth zone is 190°C, the temperature of the sixth zone is 190°C, the temperature of the seventh zone is 190°C, the temperature of the eighth zone is 190°C, the temperature of the ninth zone is 190°C, the temperature...

Embodiment 3

[0038] Weigh 30 parts of polypropylene resin, 70 parts of polystyrene resin, 3 parts of styrene-butadiene-styrene block copolymer, 40 parts of calcium carbonate masterbatch, 0.5 part of hyperdispersant and 0.5 part of antioxidant, Put the weighed raw materials of each component into the mixer and mix them thoroughly for 15 minutes to obtain a premix; put the obtained premix into a twin-screw extruder for melt extrusion and strand granulation to obtain colored plastic processing Cleaning agent for equipment, wherein the process parameters of the twin-screw extruder are: the temperature of the first zone is 180°C, the temperature of the second zone is 200°C, the temperature of the third zone is 200°C, the temperature of the fourth zone is 200°C, and the temperature of the fifth zone is 200°C, the temperature of the sixth zone is 200°C, the temperature of the seventh zone is 200°C, the temperature of the eighth zone is 200°C, the temperature of the ninth zone is 200°C, the tempera...

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Abstract

The invention discloses a cleanser for colored plastic processing equipment. The cleanser includes polystyrene resin, polypropylene resin, styrene-butadiene-styrene segmented copolymer resin, calcium carbonate master batches, a super-dispersant, and an antioxidant. In the invention, the calcium carbonate master batches are used instead of inorganic powder, so that powder floatation is reduced and production environment is improved, thereby reducing damage on environment and human body due to the powder. In addition, the styrene-butadiene-styrene segmented copolymer is used as a compatilizer for the polystyrene and the polypropylene, so that a problem of broken strips during extrusive granulation is reduced and production is easy to control. Finally, with addition of the super-dispersant, dispersion of pigment granules in residual batch products in the cleanser polymer is improved, so that emission speed of the residual pigment is increased. The cleanser is especially suitable for the colored plastic processing equipment.

Description

technical field [0001] The invention relates to a screw cleaning agent, in particular to a cleaning agent for colored plastic processing equipment and a preparation method thereof, belonging to the technical field of composite polymer materials and processing thereof. Background technique [0002] In the field of plastics, the most commonly used processing equipment is injection molding machines and extruders. When changing the type of plastic or the color of plastic products, since the processing equipment will contain residues from the previous batch, in order to remove these residues, it is necessary to Processing equipment is cleaned. The usual cleaning method is to add a large amount of raw materials into the barrel and heat it, and discharge the residue in the barrel continuously until the residue of the previous batch is discharged or the color of the discharge does not change. This cleaning method will waste a lot of raw materials, takes a long time, and the cleanin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L23/12C08L53/02C08L33/04C08K3/26C08K5/134C08J3/22
CPCC08J3/226C08J2323/12C08J2325/06C08J2423/12C08L23/12C08L25/06C08L2205/035C08L53/02C08L33/04C08K2003/265C08K5/1345
Inventor 焦贵宁周杰杨建洲叶晓光王峰刚周振驰
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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