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Low whitening, oil bath resistant, low temperature toughening and glass fiber reinforced polypropylene material

A technology of polypropylene material and copolymerized polypropylene, which is applied in low-whitening, glass-fiber-reinforced polypropylene materials, low-temperature toughening, and oil-bath-resistant fields. problems, to achieve the effect of improving stress whitening resistance, oil resistance and low temperature toughness

Active Publication Date: 2018-04-24
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power battery shell materials commonly used in the market have problems such as stress whitening, poor low temperature toughness, poor grease resistance, and low material strength.
[0003] Chinese patent CN 2010243936 discloses a glass fiber-reinforced polypropylene material, which has poor low-temperature toughness and is easily broken by impact at low temperatures
Chinese patent CN201110364743 discloses a high-strength and high-toughness flame-retardant polypropylene composite material. This reinforced polypropylene material has limited low-temperature toughening effect and is not resistant to stress whitening
Chinese patent CN201611223575 discloses a high-strength and high-toughness continuous glass fiber reinforced polypropylene material. This glass fiber reinforced material is a PP / PA alloy, which has limited corrosion resistance and is not resistant to grease. It cannot be used for long-term work close to the engine. Power battery material
Chinese patent CN201010526058 discloses a flame-retardant material for a power battery shell based on PP material. This material has limited grease resistance, poor low-temperature toughness, and is prone to whitening under impact.

Method used

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  • Low whitening, oil bath resistant, low temperature toughening and glass fiber reinforced polypropylene material
  • Low whitening, oil bath resistant, low temperature toughening and glass fiber reinforced polypropylene material
  • Low whitening, oil bath resistant, low temperature toughening and glass fiber reinforced polypropylene material

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preparation example Construction

[0034] The preparation method of the described low-whitening, oil-bath-resistant, low-temperature toughening, and glass fiber-reinforced polypropylene material comprises the following steps: copolymerizing polypropylene, PPR, POE, grafted polypropylene, Vistamaxx, synthetic mica powder, processing aid The agent is evenly mixed, and then fed from the main feeding port of the extruder, and the glass fiber is fed into the screw barrel of the extruder through a side feeding scale; the raw materials are melted, extruded, and granulated in the extruder to obtain the above-mentioned Low blush, oil bath resistant, low temperature toughened, glass fiber reinforced polypropylene material.

[0035] The extruder is a twin-screw extruder. The melting temperature in the melting step is 180-250°C. The processing conditions of the melting step are as follows: the temperature in the first zone is 170-190°C, the temperature in the second zone is 200-220°C, the temperature in the third zone is ...

Embodiment 1

[0037] In the low-whitening, oil-bath-resistant, low-temperature-toughened, glass-fiber-reinforced polypropylene material: the processing aids include antioxidants, lubricants, and antisticking agents, and the antioxidants are antioxidants 1010 and antioxidant 168, wherein antioxidant 1010 and antioxidant 168 are compounded according to a mass ratio of 1:1, the lubricant is polyethylene wax lubricant, and the anti-sticking agent is FX-5920A (tetrafluoroethylene processing aid), the distribution ratio of each component is shown in Table 1.

[0038]The preparation method of the described low-whitening, oil-bath-resistant, low-temperature toughened, and glass fiber-reinforced polypropylene material comprises the following steps: uniformly mixing copolymerized polypropylene, PPR, POE, grafted polypropylene, and processing aids, and then starting from The main feeding port of the extruder is fed, and the glass fiber is fed into the screw barrel of the extruder through the side feed...

Embodiment 2

[0041] In the low-whitening, oil-bath-resistant, low-temperature-toughened, glass-fiber-reinforced polypropylene material: the processing aids include antioxidants, lubricants, and antisticking agents, and the antioxidants are antioxidants 1010 and antioxidant 168, wherein antioxidant 1010 and antioxidant 168 are compounded according to a mass ratio of 1:1, the lubricant is polyethylene wax lubricant, and the anti-sticking agent is FX-5920A (tetrafluoroethylene processing aid), the distribution ratio of each component is shown in Table 1.

[0042] The preparation method of the described low-whitening, oil-bath-resistant, low-temperature toughening, and glass fiber-reinforced polypropylene material comprises the steps of uniformly mixing copolymerized polypropylene, PPR, POE, grafted polypropylene, Vistamaxx, and processing aids, Then feed from the main feeding port of the extruder, and the glass fiber is fed into the screw barrel of the extruder through a side feeding scale; t...

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Abstract

The invention provides a low whitening, oil bath resistant, low temperature toughening and glass fiber reinforced polypropylene material. The material is prepared from the following raw materials in parts by weight: 10 to 50 parts of co-polypropylene, 25 to 40 parts of PPR, 15 to 20 parts of glass fiber, 5 parts of POE, 5 parts of grafted polypropylene, 0 to 5 parts of Vistamaxx, 0 to 10 parts ofsynthetic mica powder and 0.8 to 1.0 part of processing aid. According to the low whitening, oil bath resistant, low temperature toughening and glass fiber reinforced polypropylene material disclosedby the invention, a toughening effect of the POE is utilized to improve low temperature toughness of the polypropylene material; the Vistamax is added to improve compatibility of an ethylene phase anda propylene phase of the co-polypropylene and improve interface strength of the ethylene phase and the propylene phase; thus, stress-tolerant whitening performance of the material is improved.

Description

technical field [0001] The invention belongs to the field of modified plastics, in particular to a low-whitening, oil-bath-resistant, low-temperature toughened, glass fiber-reinforced polypropylene material. Background technique [0002] In recent years, my country's new energy vehicle industry has developed rapidly, and the core technology of new energy vehicles lies in power battery technology. Power batteries are required to have a longer battery life, can provide higher voltage, and have a longer service life. There are high demands on the intensity of use. Compared with other polymer power battery shell materials, glass fiber reinforced polypropylene (PP) has obvious cost advantages, and has good comprehensive performance, good solvent resistance, stable properties, and high strength comparable to engineering plastics. At present, many domestic batteries The manufacturer chooses glass fiber reinforced material as the casing of the power battery. However, most glass fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L51/06C08K7/14C08K5/134C08K5/526C08K3/34C08K13/04C08K7/00C08J5/04
CPCC08J5/043C08J2323/14C08J2423/08C08J2423/14C08K3/34C08K5/1345C08K5/526C08K7/00C08K7/14C08K13/04
Inventor 崔嵬李聪陈国雄郝垠龙田晋丽
Owner TIANJIN KINGFA NEW MATERIAL
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