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Hydrolysis-resistant and low-temperature-resistant PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) composite and preparation method thereof

A composite material and low-temperature-resistant technology, which is applied in the field of polymers, can solve the problems of easy brittleness and large drop in impact strength of finished products, and achieve the effects of improving stability, high low-temperature impact resistance, and improving low-temperature impact resistance

Active Publication Date: 2017-01-25
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the technical deficiencies of existing PC / ABS alloy materials, such as the impact strength of the existing PC / ABS alloy material is greatly reduced in a high-temperature, high-humidity environment or in a low-temperature environment, and the finished product is easy to become brittle, the present invention discloses a PC / ABS alloy material resistant to hydrolysis and low temperature. ABS composite material and its preparation method

Method used

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  • Hydrolysis-resistant and low-temperature-resistant PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) composite and preparation method thereof
  • Hydrolysis-resistant and low-temperature-resistant PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) composite and preparation method thereof
  • Hydrolysis-resistant and low-temperature-resistant PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The hydrolysis-resistant and low-temperature-resistant PC / ABS composite material in this embodiment is made up of the following raw materials by weight:

[0038]

[0039] Concrete preparation method comprises the following steps:

[0040] (1) According to the proportion, weigh 50 parts of raw materials PC, 30 parts of ABS, 8 parts of MBS, 5 parts of LLDPE, 5 parts of SAM, 2 parts of heat stabilizer, 0.6 parts of antioxidant, 0.3 parts of PTFE, 0.5 parts of lubricant, 1 part of other additives was weighed and added to the high-speed mixer (set speed 500rpm / min), mixed for 4 minutes until uniform, and discharged to obtain the mixture;

[0041] (2) The mixture is put into the hopper of the twin-screw extruder, and a screw combination with strong shear is selected;

[0042] (3) Set the screw speed of the twin-screw extruder at 400-550r / min, the main feed at 15-25HZ, the vacuum at -0.04--0.08MPa, and the temperature at 235-270°C. The rotational speed of the granulator i...

Embodiment 2

[0044] The hydrolysis-resistant and low-temperature-resistant PC / ABS composite material in this embodiment is made up of the following raw materials by weight:

[0045]

[0046] Concrete preparation method comprises the following steps:

[0047] (1) According to the proportion, weigh 55 parts of raw materials PC, 25 parts of ABS, 7 parts of MBS, 5 parts of LLDPE, 5 parts of SAM, 3 parts of heat stabilizer, 0.6 parts of antioxidant, 0.3 parts of PTFE, 0.5 parts of lubricant, 1 part of other additives was weighed and added to the high-speed mixer (set speed 500rpm / min), mixed for 4 minutes until uniform, and discharged to obtain the mixture;

[0048] (2) The mixture is put into the hopper of the twin-screw extruder, and a screw combination with strong shear is selected;

[0049] (3) Set the screw speed of the twin-screw extruder at 400-550r / min, the main feed at 15-25HZ, the vacuum at -0.04--0.08MPa, and the temperature at 235-270°C. The rotational speed of the granulator i...

Embodiment 3

[0051] The hydrolysis-resistant and low-temperature-resistant PC / ABS composite material in this embodiment is made up of the following raw materials by weight:

[0052]

[0053] Concrete preparation method comprises the following steps:

[0054](1) According to the ratio, weigh 58 parts of raw materials PC, 23 parts of ABS, 7 parts of MBS, 5 parts of LLDPE, 5 parts of SAM, 2 parts of heat stabilizer, 0.6 parts of antioxidant, 0.3 parts of PTFE, 0.5 parts of lubricant, 1 part of other additives was weighed and added to the high-speed mixer (set speed 500rpm / min), mixed for 4 minutes until uniform, and discharged to obtain the mixture;

[0055] (2) The mixture is put into the hopper of the twin-screw extruder, and a screw combination with strong shear is selected;

[0056] (3) Set the screw speed of the twin-screw extruder at 400-550r / min, the main feed at 15-25HZ, the vacuum at -0.04--0.08MPa, and the temperature at 235-270°C. The rotational speed of the granulator is 700-...

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Abstract

The invention provides a hydrolysis-resistant and low-temperature-resistant PC / ABS (Polycarbonate / Acrylonitrile Butadiene Styrene) composite and a preparation method thereof. The PC / ABS composite comprises the following materials in parts by weight: 50-65 parts of PC resin, 20-30 parts of ABS, 5-10 parts of an MBS flexibilizer, 1-5 parts of LLDPE (Linear Low Density Polyethylene), 1-5 parts of SAM, 1-3 parts of a heat stabilizer, 0.5-1 part of antioxygen, 0.3-0.5 part of polytetrafluoroethylene, 0.5-1 part of a lubricant, and 0-3 parts of other assistants. Due to the linear structure of the LLDPE, the shrinkage property of the polytetrafluoroethylene (PTFE) and the compatibilization of the SAM, the interfacial compatibility of the LLDPE and the PC / ABS is improved, and the low-temperature impact resistance performance, the malleability and the tearing property of the composite are greatly improved; meanwhile, the composite has the characteristics of high hydrolysis resistance, high heat stability, excellent wear resistance and excellent chemical corrosion resistance, so that the application field of a PC / ABS alloy material is greatly expanded, and the composite has broad development and application prospects.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a hydrolysis-resistant and low-temperature-resistant PC / ABS composite material and a preparation method thereof. Background technique [0002] PC / ABS alloy material is a modified plastic made by mixing polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS). Polycarbonate (PC) is a polymer whose molecular chain repeating unit is carbonate type. It has the advantages of high impact strength, good creep resistance and dimensional stability, heat resistance, and excellent dielectric properties. It also has processing flow. Poor resistance, easy stress cracking, sensitivity to notch, poor chemical resistance and other shortcomings; acrylonitrile-butadiene-styrene terpolymer (ABS resin) has good toughness, rigidity and processability, but in other mechanical properties, etc. There are deficiencies. The performance of PC / ABS alloy can make up for the shortage of singl...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L51/04C08L23/08C08L35/06C08L27/18C08K3/32
Inventor 高波李荣群文听雷周海
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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