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Ultra-low temperature-resistant polycarbonate resin composition

A polycarbonate resin and composition technology, which is applied in the field of ultra-low temperature resistant polycarbonate compositions, can solve problems such as poor mechanical properties, and achieve the effects of good compatibility, increased low temperature impact strength, and less cracks

Inactive Publication Date: 2011-01-05
SHENZHEN XINGYEYUAN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defect of poor mechanical properties of polycarbonate resins in the prior art at ultra-low temperatures below -50°C, the present invention provides an ultra-low temperature resistant polycarbonate composition to improve the properties of polycarbonate resins. Low temperature performance, expanding its field of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composition ratio of the following table is prepared (1 part=100 grams):

[0032] Polycarbonate 100 parts

[0033] SEBS modified silica gel 1.5 parts

[0034] 0.1 parts of 4,4'-thiobis(6-tert-butyl-3-methylphenol)

[0035] 0.2 parts of 2,4-dihydroxybenzophenone

[0036] Flame retardant FR-1010 0.08 parts

[0037] Pour each component of the prepared material into the mixer and stir evenly, and place it in the twin-screw extruder, the screw speed is 100Hz, and the set temperature is: 250°C for the first zone, 260°C for the second zone, 260°C for the third zone, and 270°C for the fourth zone ℃, five zones at 2700°C, six zones at 270°C, seven zones at 270°C, eight zones at 270°C, and a die head at 300°C for extrusion and granulation to obtain the polycarbonate resin of the present invention.

[0038] Performance test results:

[0039] performance

Embodiment 2

[0041] The composition ratio of the following table is prepared (1 part=100 grams):

[0042] Polycarbonate 100 parts

[0043] PS modified silica gel 2 parts

[0044] 0.15 parts of 4,4'-thiobis(6-tert-butyl-3-methylphenol)

[0045] Flame retardant FR-3690 0.08 parts

[0046] Pour each component of the prepared material into the mixer and stir evenly, and place it in the twin-screw extruder, the screw speed is 100Hz, and the set temperature is: 280°C in the first zone, 280°C in the second zone, 280°C in the third zone, and 300 in the fourth zone. °C, 300 °C in the fifth area, 300 °C in the sixth area, 2300 °C in the seventh area, 300 °C in the eighth area, and 310 °C in the die head for extrusion granulation to obtain the polycarbonate resin of the present invention.

[0047] Performance test results:

[0048] performance

[0049] Elongation

Embodiment 3

[0051] The composition ratio of the following table is prepared (1 part=100 grams):

[0052] Polycarbonate 100 parts

[0053] AS modified silica gel 2.5 parts

[0054] 0.15 parts of 4,4'-thiobis(6-tert-butyl-3-methylphenol)

[0055] 0.4 parts of 2,4-dihydroxybenzophenone

[0056] Flame retardant FR-2025 0.1 parts

[0057] Pour each component of the prepared material into the mixer and stir evenly, and place it in the twin-screw extruder, the screw speed is 100Hz, and the set temperature is: 260°C for the first zone, 260°C for the second zone, 270°C for the third zone, and 270°C for the fourth zone. ℃, five zone 270 ℃, six zone 270 ℃, seven zone 280 ℃, eight zone 280 ℃, die head 270-300 ℃ extrusion granulation, obtain the polycarbonate resin of the present invention.

[0058] Performance test results:

[0059] performance

[0060] heat distortion temperature

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PUM

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Abstract

The invention provides a polycarbonate resin composition which comprises the following components in parts by weight: 100 parts of polycarbonate, 1.5-5 parts of modified silica gel, 0.1-0.5 part of antioxidant and 0.08-0.1 part of flame retardant. All the components in the provided polycarbonate resin composition have good compatibility, so that the polycarbonate resin composition can be used for preparing a polycarbonate resin special product under the environment that the temperature is as low as minus 70 DEG C; simultaneously, a low-temperature impact modifier and the antioxidant produce the synergy, thereby increasing and recovering the original molecular weight and the intrinsic viscosity of the polycarbonate during the low-temperature processing and forming process, increasing the low-temperature impact strength, the bending strength, the tensile strength and other performances, simultaneously enhancing the low temperature resistance, being difficult to produce cracks and giving the performances of fire prevention and flame retardance to the polycarbonate resin composition.

Description

【Technical field】 [0001] The invention relates to the field of polymer materials, in particular to an ultra-low temperature resistant polycarbonate composition. 【Background technique】 [0002] Pure polycarbonate resin (PC) is an amorphous, odorless, non-toxic, transparent thermoplastic polymer with a general molecular weight of 20,000-70,000. It has good mechanical properties at normal operating temperatures, especially outstanding It is its impact performance and dimensional stability, with UL94-V2 flame retardant performance. With the increasing production scale of polycarbonate, the price difference between polycarbonate and polymethyl methacrylate is also shrinking, so its application is becoming more and more extensive. The most common applications are the use of carbonate resins in the manufacture of optical discs, eye lenses, electrical housings, bulletproof glass, goggles, automotive lamp covers, and more. Polycarbonate can be processed by injection molding, extrus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/10C08K5/375C08K5/526C08K5/134B29B9/06B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92895
Inventor 付业浩
Owner SHENZHEN XINGYEYUAN SCI & TECH CO LTD
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