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Compatilizer for PP/PS extrusion molding and preparation method thereof

A technology of extrusion molding and compatibilizer, which is applied in the field of PP/PS extrusion molding compatibilizer and its preparation, can solve the problems of extrusion expansion and unfavorable processing, and achieve the improvement of elongation, increase of yield, and practical strong effect

Active Publication Date: 2017-10-24
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, adding SBS and SEBS blending is a common method, but due to the long molecular chains and micro-crosslinking of SBS and SEBS, the compatibility can be improved during injection molding, but extrusion swelling is prone to occur during extrusion molding , not conducive to processing

Method used

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  • Compatilizer for PP/PS extrusion molding and preparation method thereof
  • Compatilizer for PP/PS extrusion molding and preparation method thereof
  • Compatilizer for PP/PS extrusion molding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 150g of styrene, 50g of maleic anhydride, and 2g of DCP and mix them evenly, then add them together with 900g of PP, 25g of fumed silica, and 0.3g of antioxidant 1010 into a high-speed mixer and mix for 3 minutes, then set aside; The temperature of each heating zone of the screw extruder is: the first zone: 100°C, the second zone: 140°C, the third zone: 160°C, the fourth zone: 190°C, the fifth zone: 200°C, the sixth zone: 210°C ℃, the seventh zone: 220℃, the eighth zone: 230℃, the ninth zone: 220℃, the head temperature: 245℃; wait for the temperature to reach the set temperature and then stabilize for 30 minutes; extrude the mixture from the twin-screw Add to the feeding port of the main machine, slowly turn on the speed of the main machine to 100r / min; then turn on the feeding frequency to 4.5Hz. During the extrusion process, let the material stay in the screw area for 1.5 minutes to make it fully react. PP / PS compatibilizer 1 was obtained.

[0024] figure 1 I...

Embodiment 2

[0027] Weigh 250g of styrene, 50g of butyl acrylate, and 1.5g of DCP and mix them evenly, then add them together with 700g of PP, 50g of fumed silica, and 0.2g of antioxidant 1010 into a high-speed mixer and mix for 4 minutes, then set aside; set the twin-screw The temperature of each heating zone of the extruder is: the first zone: 100°C, the second zone: 140°C, the third zone: 160°C, the fourth zone: 190°C, the fifth zone: 200°C, the sixth zone: 210°C , the seventh zone: 220°C, the eighth zone: 230°C, the ninth zone: 220°C, the head temperature: 245°C; wait for the temperature to reach the set temperature and then stabilize for 30 minutes; put the mixture from the twin-screw extruder Add from the main feeding port, slowly turn on the speed of the main engine at 80r / min; then turn on the feeding frequency at 4.5Hz. During the extrusion process, let the material stay in the screw area for 1.8 minutes to make it fully react. PP / PS compatibilizer 2 was obtained.

Embodiment 3

[0029] Weigh 150g of styrene, 150g of butyl acrylate, and 2g of DCP and mix them evenly, then add them together with 700g of PP, 30g of molecular sieve, and 0.3g of antioxidant 1010 into a high-speed mixer and mix for 4 minutes, then set aside; set the twin-screw extruder to heat each The interval temperature is: first zone: 100°C, second zone: 140°C, third zone: 160°C, fourth zone: 190°C, fifth zone: 200°C, sixth zone: 210°C, seventh zone: 220°C, the eighth zone: 230°C, the ninth zone: 220°C, the head temperature: 245°C; wait for the temperature to reach the set temperature and then stabilize for 30 minutes; add the compound from the main feeding port of the twin-screw extruder, Slowly turn on the speed of the host machine at 80r / min; then turn on the feeding frequency at 4.5Hz. During the extrusion process, let the material stay in the screw area for 1.8 minutes to make it fully react. PP / PS compatibilizer 3 was obtained.

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Abstract

The invention relates to a compatilizer for PP / PS extrusion molding and a preparation method thereof. The compatilizer is prepared from the following components in percentages by mass: 65-80% of PP powder, 10-30% of a styrene monomer, 0-30% of a polar monomer, 0.05-0.25% of an initiator, 2-5% of a thickener and 0.1-0.4% of an anti-thermal oxygen stabilizer through reactive extrusion pelletization. The prepared compatilizer for PP / PS extrusion molding has good mechanical property and extrusion property, the compatibility of the PP / PS blend can be well improved, the mechanical strength of the blend can be effectively improved, the current situation of PP / PS extrusion molding is improved and the compatilizer has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a compatibilizer for extrusion molding of PP / PS and a preparation method thereof. Background technique [0002] Reactive extrusion is a plasticizing extrusion system composed of a screw and a barrel as a continuous reactor, and various raw material components to be reacted, such as monomers, initiators, polymers, additives, etc. Different or different feeding ports are added to the screw, and the process of mixing, conveying, plasticizing, reacting and extruding from the die is realized under the rotation of the screw. The traditional extrusion process generally uses polymers as raw materials, which are melted and mixed uniformly by external heat and shear friction heat applied to the materials during screw rotation, and then extruded through a die, molded, demolded and cooled to obtain products . And there are chemical changes in reactive extrusion, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F212/08C08F222/06C08F220/18C08F222/02C08F220/14C08F2/02C08K3/36C08K5/134C08K7/26C08K5/526
CPCC08F2/02C08F255/02C08K3/36C08K5/1345C08K5/526C08K7/26C08F220/1804
Inventor 吴盾刘春林周安刘钢黄仁军
Owner CHANGZHOU UNIV
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