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PP (polypropylene) filled masterbatch and method for preparing same

A technology of filling masterbatch and polypropylene, which is applied in the field of polymers, can solve the problems of pitting on the product surface, poor dispersion of stripe fillers, etc., and achieve the effect of bright colors, cost reduction, and bright surface

Inactive Publication Date: 2011-05-04
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in order to reduce costs and increase market competitiveness, many manufacturers add polypropylene filler masterbatches in the processing process to reduce costs, but they often encounter defects such as pitting and streaks on the product surface due to poor dispersion of fillers.

Method used

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  • PP (polypropylene) filled masterbatch and method for preparing same
  • PP (polypropylene) filled masterbatch and method for preparing same
  • PP (polypropylene) filled masterbatch and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Stir 12.2 parts of PP resin, 5 parts of grafted PP / POE, and 0.2 parts of titanate coupling agent in a high-speed stirrer at low speed for 1 minute;

[0052] (2), 50 parts of heavy calcium carbonate, 30 parts of precipitated barium sulfate, 1 part of talcum powder, 1 part of composite lubricant, 0.2 part of sodium benzoate, 0.2 part of antioxidant, and in the mixed material of step (1) Stir at high speed for 15 minutes;

[0053] (3) Add 0.2 parts of DCP to the mixed material in step (2) and stir at low speed for 2 minutes;

[0054] (4) Put the material stirred in step (3) into (L / D, 40:1) twin-screw melting extruder for melt extrusion and granulation. The process: 100-150°C in the first zone, 200- 220℃, 3rd zone 200-220℃, 4th zone 200-210℃, 5th zone 190-230℃, 6th zone 190-230℃, 7th zone 180-230℃, 8th zone 180-230℃, 9th zone 180-230℃ ℃; open the vacuum port in the eighth zone for vacuuming. The screw speed is at 350-500 rpm.

[0055] Performance evaluation and per...

Embodiment 2

[0065] (1) Stir 11 parts of PP resin, 4 parts of grafted PP / POE, and 1 part of titanate coupling agent in a high-speed stirrer at low speed for 1 minute;

[0066] (2), 60 parts of heavy calcium carbonate, 20 parts of precipitated barium sulfate, 1 part of talcum powder, 1.5 parts of composite lubricant, 1 part of sodium benzoate, 0.3 part of antioxidant, and in the mixed material of step (1) Stir at high speed for 15 minutes;

[0067] (3) Add 0.2 parts of DCP to the mixed material in step (2) and stir at low speed for 2 minutes;

[0068] (4) Put the material stirred in step (3) into (L / D, 40:1) twin-screw melting extruder for melt extrusion and granulation. The process: 100-150°C in the first zone, 200- 220℃, 3rd zone 200-220℃, 4th zone 200-210℃, 5th zone 190-230℃, 6th zone 190-230℃, 7th zone 180-230℃, 8th zone 180-230℃, 9th zone 180-230℃ ℃; open the vacuum port in the eighth zone for vacuuming. The screw speed is at 350-500 rpm. Performance evaluation and performance indi...

Embodiment 3

[0074] (1) Stir 12 parts of PP resin, 3 parts of grafted PP / POE, and 0.8 parts of titanate coupling agent in a high-speed stirrer at low speed for 1 minute;

[0075] (2), 70 parts of heavy calcium carbonate, 10 parts of precipitated barium sulfate, 2 parts of talcum powder, 1 part of composite lubricant, 0.3 part of sodium benzoate, 0.4 part of antioxidant, and in the mixed material of step (1) Stir at high speed for 15 minutes;

[0076] (3) Add 0.5 parts of DCP to the mixed material in step (2) and stir at low speed for 2 minutes;

[0077] (4) Put the material stirred in step (3) into (L / D, 40:1) twin-screw melting extruder for melt extrusion and granulation. The process: 100-150°C in the first zone, 200- 220℃, 3rd zone 200-220℃, 4th zone 200-210℃, 5th zone 190-230℃, 6th zone 190-230℃, 7th zone 180-230℃, 8th zone 180-230℃, 9th zone 180-230℃ ℃; open the vacuum port in the eighth zone for vacuuming. The screw speed is at 350-500 rpm.

[0078] Performance evaluation and perf...

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Abstract

The invention discloses PP (polypropylene) filled masterbatch and a method for preparing the same. The PP filled masterbatch is prepared from the following components in parts by weight: 11-13 parts of PP resin, 50-70 parts of heavy calcium carbonate, 10-30 parts of precipitated barium sulfate, 1-3 parts of talcum powder, 1-1.5 parts of composite lubricant, 0.2-0.3 part of antioxidant, 3-5 parts of grafted PP / POE (polyethylene octene elastomer), 0.2-0.5 part of DCP (dicumyl peroxid), 0.2-1 part of titanate coupling agent and 0.2-1 part of sodium benzoate. The process for preparing the PP filled masterbatch is characterized by granulation through melt extrusion by a twin-screw extruder. The PP, the heavy calcium carbonate and the precipitated barium sulfate are blended together to prepare the PP filled masterbatch with excellent dispersibility. The PP filled masterbatch can be added and stirred to the PP to prepare the product with stable size and high specific surface area through the direct processing by an injecting-moulding machine.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a PP filler masterbatch with excellent dispersibility and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a semi-crystalline material. It is harder than PE and has a higher melting point. It is cheap, has excellent wear resistance, chemical resistance, excellent electrical insulation, and better Mechanical strength and good processing and molding characteristics, widely used in automotive, electrical, mechanical, radio, textile, and other engineering accessories, daily necessities, turnover boxes, medical and health equipment, construction and other materials. [0003] At present, in order to reduce costs and increase market competitiveness, many manufacturers add polypropylene filler masterbatches in the processing process to reduce costs, but they often encounter defects such as pitting and streaks on the product surface due to poor dispersion...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/02C08K3/26C08K3/30C08K3/34C08K5/098B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92
Inventor 徐东徐永罗秀永
Owner SHENZHEN KEJU NEW MATERIAL
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