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High-liquidity high-toughness reinforced PC composite material and preparing method thereof

A composite material and high toughness technology, which is applied in the field of high flow and high toughness reinforced PC composite materials and its preparation, can solve the problems of ultra-thin mobile phones, narrow frames, and reduced rigidity of PC materials, and achieve good high-gloss surface effects, extremely Excellent surface effect, excellent bronzing effect

Inactive Publication Date: 2017-05-24
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will lead to a decrease in the rigidity of the PC material, which does not meet the requirements of ultra-thin and narrow bezels for mobile phones.

Method used

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  • High-liquidity high-toughness reinforced PC composite material and preparing method thereof
  • High-liquidity high-toughness reinforced PC composite material and preparing method thereof
  • High-liquidity high-toughness reinforced PC composite material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The high flow and high toughness reinforced PC composite material in the present embodiment is made up of following raw materials by weight:

[0026]

[0027]

[0028] Concrete preparation method comprises the following steps:

[0029] (1) 80 parts of aromatic polycarbonate, 2 parts of ethylene-methyl acrylate copolymer, 4 parts of methyl methacrylate-butadiene-styrene terpolymer, 0.1 part of antioxidant 1076, 0.2 part Antioxidant 168, 0.2 part of antioxidant DLTP, 0.5 part of pentaerythritol stearate, 0.5 part of polyethylene wax, added to a mixer with nitrogen protection and mixed at high speed for 6 minutes;

[0030] (2) Under the protection of nitrogen, put the mixed material of (1) into the parallel twin-screw extruder to melt, and then add 10 parts of glass fiber (510H, boulder) from the side feeding port of the extruder, and at the same time pass the liquid pump in Add 3 parts of plasticizer BDP to the side feed port of the extruder, extrude and granulate ...

Embodiment 2

[0032] The high flow and high toughness reinforced PC composite material in this example is made up of the following raw materials by weight:

[0033]

[0034]

[0035] Concrete preparation method comprises the following steps:

[0036] (1) 68 parts of aliphatic polycarbonate, 2 parts of ethylene-methyl acrylate copolymer, 1 part of methyl methacrylate-butadiene-styrene terpolymer, 0.1 part of antioxidant 1076, 0.1 part Antioxidant 168, 0.5 parts of silicone masterbatch, added to a mixer with nitrogen protection and mixed at high speed for 10 minutes;

[0037] (2) Under the protection of nitrogen, put (1) the mixed material into the parallel twin-screw extruder to melt, then add 20 parts of glass fiber (510, boulder) from the side feeding port of the extruder, and simultaneously pass the liquid pump in Add 6 parts of plasticizer BDP to the side feeding port of the extruder, and extrude and granulate to obtain a high-flow, high-toughness reinforced PC composite material;...

Embodiment 3

[0039] The high flow and high toughness reinforced PC composite material in the present embodiment is made up of following raw materials by weight:

[0040]

[0041] Concrete preparation method comprises the following steps:

[0042] (1) 74 parts of polycarbonate, 3.5 parts of ethylene-methyl acrylate copolymer, 1.5 parts of ethylene-butyl acrylate-glycidyl methacrylate, 0.5 parts of antioxidant 1076, 0.3 parts of antioxidant 168, 0.2 1 part of antioxidant DLTP, 0.5 part of pentaerythritol stearate, 0.5 part of montan wax, added to a mixer with nitrogen protection and mixed at high speed for 2 minutes;

[0043] (2) Under the protection of nitrogen, put the mixed material of (1) into the parallel twin-screw extruder to melt, and then add 20 parts of glass fiber (510, boulder) from the side feeding port of the extruder, and extrude, make pellets to obtain high-flow and high-toughness reinforced PC composite materials; where the barrel temperature of the extruder is 260°C, th...

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Abstract

The invention discloses a high-liquidity high-toughness reinforced PC composite material and a preparing method thereof, and belongs to the technical field of high polymer materials. The high-liquidity high-toughness reinforced PC composite material is composed of, by weight, 68-80 parts of PC resin, 0-6 pars of plasticizer BDP, 3-6 parts of flexibilizer, 10-20 parts of glass fiber, 0.2-1 part of antioxidant and 0.5-1 part of lubricant. The high-liquidity high-toughness reinforced PC composite material shows good balance on strength and toughness, has good liquidity, is suitable for thin-wall workpiece injection molding, and is successfully applied to mobile phones; the flexural modulus of the high-liquidity high-toughness reinforced PC composite material is bigger than or equal to 4000 Mpa, the cantilever beam notched impact is bigger than or equal to 160 J / m, and the liquidity is bigger than 20 g / 10min; compared with a PC+10%GF or PC+20%GF material which is adopted in an existing mobile phone rear shell or a middle frame, the high-liquidity high-toughness reinforced PC composite material has a flatter surface, a good spraying effect, and a good evaporation effect; the high-liquidity high-toughness reinforced PC composite material is prepared from universal PC, the BDP plasticizer, the flexibilizer, the lubricant and the antioxidant, and the raw material is easy to obtain and can be directly used for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a high-fluidity and high-toughness reinforced PC composite material and a preparation method thereof. Background technique [0002] The front and middle frames of mobile phones and the back shell materials of some models are mainly PC + 10% GF (GF, glassfiber) or PC + 20% GF materials in the market. The innovative application of PC+10% GF material and PC+20% GF material allows more freedom in the design of ultra-thin and narrow-frame mobile phones. The glass fiber reinforced modified PC material has higher rigidity, and the stress cracking resistance has also been significantly improved. [0003] Polycarbonate (PC) is an amorphous thermoplastic resin with excellent comprehensive properties. It has excellent electrical insulation, elongation, dimensional stability and chemical corrosion resistance, and has high strength, heat resistance and cold resistance. It also has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/08C08L51/04C08L23/06C08L83/04C08K13/04C08K7/14B29B9/06B29C47/92B29C48/92
CPCC08L69/00B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L2205/035C08L23/0869C08L23/0884C08L51/04C08L23/06C08L83/04C08K13/04C08K7/14
Inventor 魏子芳李卫李荣群丁有朝邵禹通孙瑞
Owner ORINKO NEW MATERIAL CO LTD
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