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Modified polycarbonate material

A polycarbonate and modification technology, applied in the field of modified polycarbonate materials and their preparation, can solve the problems of poor scratch resistance, notch sensitivity, yellowing, etc., and achieve the effects of improving safety performance and improving stability performance.

Inactive Publication Date: 2017-06-27
山东天福医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although polycarbonate has many advantages, the main performance defects are insufficient hydrolytic stability, sensitivity to notches, resistance to organic chemicals, poor scratch resistance, and yellowing when exposed to ultraviolet rays for a long time

Method used

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  • Modified polycarbonate material
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  • Modified polycarbonate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Take each raw material respectively by weight ratio as follows:

[0022] Polycarbonate raw material: 75

[0023] E-glass fiber: 25

[0024] Antioxidant (copolymer of ethylene-octene): 1.0

[0025] Colorant: 0.8

[0026] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 9.0

[0027] Light stabilizer: 9.0

[0028] Dispersed lubricant (TAS-2A): 1.0

[0029] Glass fiber compatibilizer: 5.0

[0030] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 7-8 minutes, and then put them in a twin-screw extruder to melt, extrude, cool, pelletize, and pack the finished product; among them, the twin-screw extruder The temperature of the first zone is 120-130°C, the second zone is 170-180°C, the third zone is 230-240°C, the fourth zone is 240-250°C; the fifth zone is 210-220°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0031] Experimental results:

[0032]

[0033] The above experimental results show that the ...

Embodiment 2

[0035] (1) Take each raw material respectively by weight ratio as follows:

[0036] Polycarbonate raw material: 70

[0037] E-glass fiber: 20

[0038] Antioxidant (copolymer of ethylene-octene): 0.8

[0039] Colorant: 0.6

[0040] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 8.5

[0041] Light stabilizer: 8.5

[0042] Dispersed lubricant (TAS-2A): 0.8

[0043] Glass fiber compatibilizer: 4.5

[0044] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 7-8 minutes, and then put them in a twin-screw extruder to melt, extrude, cool, pelletize, and pack the finished product; among them, the twin-screw extruder The temperature of the first zone is 120-130°C, the second zone is 170-180°C, the third zone is 230-240°C, the fourth zone is 240-250°C; the fifth zone is 210-220°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0045] Experimental results:

[0046]

[0047] The above test results show that the stabilit...

Embodiment 3

[0049] (1) Take each raw material respectively by weight ratio as follows:

[0050] Polycarbonate raw material: 80

[0051] E-glass fiber: 30

[0052] Antioxidant (copolymer of ethylene-octene): 1.2

[0053] Colorant: 1.0

[0054] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 9.5

[0055] Light stabilizer: 9.5

[0056] Dispersed lubricant (TAS-2A): 1.2

[0057] Glass fiber compatibilizer: 5.5

[0058] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 7-8 minutes, and then put them in a twin-screw extruder to melt, extrude, cool, pelletize, and pack the finished product; among them, the twin-screw extruder The temperature of the first zone is 120-130°C, the second zone is 170-180°C, the third zone is 230-240°C, the fourth zone is 240-250°C; the fifth zone is 210-220°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0059] Experimental results:

[0060]

[0061] The above experimental results show that the ...

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PUM

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Abstract

The invention aims to provide a modified polycarbonate material for improving stability of the polycarbonate material and a preparation method thereof. The polycarbonate is a tough thermoplastic resin, is the second largest engineering plastic with the yield only next to that of polyamide at present and is capable of resisting against weak acid, weak base and neutral oil. The polycarbonate is unable to resist against ultraviolet ray and strong base. The polycarbonate is colorless, transparent, heat-resisting and anti-impact and has an excellent mechanical property within common use temperature. Although the polycarbonate has various advantages, the polycarbonate has the main performance deficiencies of insufficient hydrolysis resistance stability, sensitivity to gap, poor organic chemistry resistance and scratching resistance and yellowing after long-term exposure in ultraviolet rays. As same as the other resins, the polycarbonate is easily corroded by some organic solvents, so that the improvement for the stability of the polycarbonate is necessary. The mechanical property of the modified polycarbonate material provided by the invention can reach the use standard, the stability of the polycarbonate material can be greatly promoted and the safety in the use process of the polycarbonate material is promoted.

Description

technical field [0001] The invention belongs to the polycarbonate material production technology, specifically a modified polycarbonate material which improves the original deficiencies of polycarbonate to have hydrolysis-resistant and stable performance and a preparation method thereof. Background technique [0002] Polycarbonate, English name: Polycarbonate, abbreviated name PC. The structural formula is as follows: [0003] [0004] Polycarbonate is a kind of tough thermoplastic resin, and now it is the second largest engineering plastic in output after polyamide. Polycarbonate is resistant to weak acid, weak alkali and neutral oil. Polycarbonate is not resistant to UV light and is not resistant to strong alkalis. Polycarbonate is colorless and transparent, heat-resistant, impact-resistant, and has good mechanical properties at normal operating temperatures. [0005] Although polycarbonate has many advantages, the main performance defects are insufficient hydrolytic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/08C08K13/04C08K7/14C08K5/132
CPCC08L69/00
Inventor 张瑞仙
Owner 山东天福医疗科技有限公司