High-rigidity, high-melt-strength and low-temperature-impact-resistant thermo-plastic ABS resin composition used for blow molding

A high melt strength, ABS resin technology, applied in the field of thermoplastic ABS resin composition, can solve the problems of unbalanced melt strength, rigidity and low temperature toughness, high melt strength, etc., and achieve improved melt flow rate and shear viscosity , high melt strength and excellent low temperature toughness

Active Publication Date: 2016-10-26
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this resin composition, not only the melt strength is high in the blow molding process, but the parison sagging phenomenon is less; at the same time, the rigidity and low temperature toughness of the product are g

Method used

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  • High-rigidity, high-melt-strength and low-temperature-impact-resistant thermo-plastic ABS resin composition used for blow molding
  • High-rigidity, high-melt-strength and low-temperature-impact-resistant thermo-plastic ABS resin composition used for blow molding
  • High-rigidity, high-melt-strength and low-temperature-impact-resistant thermo-plastic ABS resin composition used for blow molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 40 parts of acrylonitrile-butadiene-styrene graft copolymer, 50 parts of acrylonitrile-styrene copolymer, 10 parts of heat-resistant modifier (HR-2), 5 parts of melt enhancer (MR-1) , 3 parts of fluoropolymer additive (FA-1), 0.6 part of processing aid. The raw materials were weighed according to the above parts, and the ABS resin composition for blow molding was prepared by the following method:

[0046] (1) Fully mix the prepared raw materials in a high-speed mixer for 30 minutes;

[0047] (2) The premixed material prepared in step 1 is sent into the twin-screw extruder through the metering device, under the conveying, shearing and mixing of the screw, the material is melted and compounded, and then extruded, drawn, cooled, In the pelletizing step, a high-rigidity, high-toughness, and high-melt strength thermoplastic ABS resin composition for blow molding is obtained. The screw aspect ratio of the twin-screw extruder is 36-44, and the vacuum degree is controlled at ...

Embodiment 2-7、 comparative example 1-3

[0049] In order to reflect the inventiveness of the present invention by comparison, the ratios of Examples 2-7 are based on Example 1, respectively comparing different types of heat-resistant modifiers (α-methylstyrene) and fluoropolymer additives. The effect of addition amount, different types of melt reinforcing agents, compounding of different types of melt reinforcing agents, and compounding of different types of fluoropolymer additives on the performance of the material, the specific preparation method is the same as that of Example 1, and the ratio of raw materials is shown in Table 1. In addition, the processing aids in Examples 2 to 7 can be any value in the range of 0.5 to 3.0, and the material components can be one or more of antioxidants, lubricants, and mold release agents. The comparability of 1, the weight fraction selected here is 0.6.

[0050] The raw material formula of table 1 embodiment 1-7 and comparative example 1-3

[0051]

[0052]

[0053] Note:...

Embodiment 8

[0068] Embodiment 8 Preparation of thermoplastic ABS resin with high rigidity, high melt strength and low temperature impact resistance

[0069] 40 parts of acrylonitrile-butadiene-styrene graft copolymer, 50 parts of acrylonitrile-styrene copolymer, 10 parts of heat-resistant modifier (HR-1), 10 parts of melt enhancer (MR-1) , 6 parts of fluoropolymer additive (FA-3), 0.6 part of processing aid. The raw materials were weighed according to the above parts, and the ABS resin composition for blow molding was prepared by the following method:

[0070] (1) Fully mix the prepared raw materials in a high-speed mixer for 30 minutes;

[0071] (2) The premixed material prepared in step 1 is sent into the twin-screw extruder through the metering device, under the conveying, shearing and mixing of the screw, the material is melted and compounded, and then extruded, drawn, cooled, In the pelletizing step, a high-rigidity, high-toughness, and high-melt strength thermoplastic ABS resin ...

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Abstract

The invention relates to a high-rigidity, high-melt-strength and low-temperature-impact-resistant thermo-plastic ABS resin composition used for blow molding. The resin composition includes: 20-60 parts of an acrylonitrile-butadiene-styrene stem-grafted copolymer, 30-70 parts of an acrylonitrile-styrene copolymer, 5-25 parts of a heat resistance modifier, 1-20 parts of a melt enhancer, 0.1-10.0 parts of a fluorine-containing polymer additive, and 0.5-3.0 parts of a processing aid. The thermo-plastic ABS resin composition has ultrahigh melt strength, ultrahigh rigidity and excellent low-temperature-impact resistance, and solves the problems that the melt strength, rigidity and low-temperature toughness of an ABS resin composition for blow molding in the prior art cannot be balanced well. The ABS resin composition is very suitable for large-size automobile parts (e.g. spoilers, seat backs, bumpers, etc,).

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thermoplastic ABS resin composition for blow molding with high rigidity, high melt strength and low-temperature impact resistance. Background technique [0002] ABS resin has excellent comprehensive properties and can be formed by various methods such as injection molding, extrusion, blow molding and rolling, and is widely used in electronic appliances, building materials, automotive interior and exterior decoration and other fields. In the blow molding process, when the polymer passes through the narrow die, it is subject to high shear force, and the parison sag is prone to occur. Excessive sag will lead to uneven wall thickness of the part, and in severe cases Can't even be molded. Therefore, for ABS resin for blow molding, the melt strength of the resin is required to be sufficiently high. For some large automotive parts, such as spoilers, seat backs, bumpers, et...

Claims

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Application Information

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IPC IPC(8): C08L25/12C08L55/02C08L33/04C08L33/20C08L27/18C08L35/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08L25/12C08L2201/08C08L2205/035C08L2207/53C08L55/02C08L33/04C08L27/18C08L33/20C08L35/06
Inventor 孟涛周霆罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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