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A kind of recycled PC/ABS alloy material and its preparation method using macromolecular chain extender original repair modification

An alloy material and chain extender technology, applied in the field of recycled PC/ABS alloy material and its preparation, can solve the problems of unsatisfactory heat resistance, weather resistance, mechanical properties, deterioration of interface bonding force, and comprehensive performance reduction, etc. Good social and economic benefits, improve the phase interface, increase the effect of compatibility

Active Publication Date: 2020-04-07
CHINA NAT ELECTRIC APP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyacrylonitrile-butadiene-styrene (ABS) and polycarbonate (PC) are two very common plastics, both of which have significant advantages and disadvantages: Among them, ABS has good processability and is relatively cheap , but its heat resistance, weather resistance, and mechanical properties are not ideal; while PC has excellent heat resistance, mechanical properties, and dimensional stability, but it is not resistant to solvents, difficult to process, and prone to stress cracking
After the aging of PC / ABS alloy, due to the changes in the microstructure and properties of waste PC and waste ABS components, the microphase interface between the two is in a state of phase separation, the interface bonding force is significantly deteriorated, and the overall performance is reduced.

Method used

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  • A kind of recycled PC/ABS alloy material and its preparation method using macromolecular chain extender original repair modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The regenerated PC / ABS alloy material provided in this embodiment is mainly composed of the following ingredients in proportions by mass:

[0037] Waste PC / ABS: 100

[0038] ABS-based macromolecular chain extender: 6

[0039] Chain extension accelerator: 1.

[0040] Wherein the ABS-based macromolecular chain extender is acrylonitrile-butadiene-styrene copolymer (ABS) grafted oxazoline, which is prepared by the following method: taking ABS high rubber powder, ethanolamine and zinc acetate as raw materials, 2 , 6-dichlorotoluene as a solvent, placed in a reaction vessel to adjust the temperature to 180 ° C cold reflux reaction for 2 hours, then freeze precipitation, suction filtration and drying, to obtain the macromolecular chain extender ABS grafted oxazoline.

[0041] The mass ratio of ABS high rubber powder, ethanolamine and zinc acetate is 100:30:2.

[0042] The consumption of 2,6-dichlorotoluene is 8 times of the total mass of raw material ABS high rubber powder....

Embodiment 2

[0049] The regenerated PC / ABS alloy material provided in this embodiment is composed of the following components by mass:

[0050] Waste PC / ABS: 100

[0051] Macromolecular chain extender: 8

[0052] Chain extension accelerator: 2.

[0053] Wherein the macromolecular chain extender is ABS grafted oxazoline, which is prepared by the following method: taking ABS high-glue powder, ethanolamine and zinc acetate as raw materials, 2,6-dichlorotoluene as solvent, and placing it in a reaction vessel to adjust The temperature is 170° C. after cold reflux reaction for 3 hours, and then the frozen precipitate is sucked and dried to obtain the macromolecular chain extender ABS grafted oxazoline.

[0054] The mass ratio of ABS high rubber powder, ethanolamine and zinc acetate is 100:50:3.

[0055] The consumption of 2,6-dichlorotoluene is 10 times of the total mass of raw material ABS high rubber powder.

[0056] Cryoprecipitates were cryoprecipitated in ethanol.

[0057] The chain ex...

Embodiment 3

[0062] The regenerated PC / ABS alloy material provided in this embodiment is mainly composed of the following ingredients in proportions by mass:

[0063] Waste PC / ABS: 100

[0064] Macromolecular chain extenders: 4

[0065] Chain extension accelerator: 0.5.

[0066] Wherein the ABS-based macromolecular chain extender is the same as in Example 2.

[0067] The chain extension accelerator is the same as in Example 1.

[0068] Waste PC / ABS is with embodiment 1.

[0069] The regenerated PC / ABS alloy material comprises the following steps: mixing the waste PC / ABS and the chain extension accelerator according to the above dosage relationship to obtain a mixed material, adding the mixed material from the main feeding device of the twin-screw extruder to melt, and controlling the screw speed From the twin-screw extruder processing zone 4, add ABS-based macromolecular chain extender and blend with the melted mixture according to the above dosage relationship, and then extrude, pull,...

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Abstract

The invention discloses a regenerated PC / ABS alloy material for origin restoration and modification by using a macromolecular chain expanding agent. The material is mainly prepared from the followingingredients in parts by mass: 100 parts of waste PC / ABS, 2 to 8 parts of ABS macromolecular chain expanders and 0.2 to 2 parts of chain expansion accelerators. The regenerated alloy material uses thein-situ chain expansion, in-situ volume increase and toughening effects of the macromolecular chain expanding agent; the molecular chain structure is restored; the phase interface is improved; the compatibility is improved; the glue content is improved; the regenerated plastic alloy material with good comprehensive performance is prepared; the waste is sufficiently utilized; the energy saving andemission reduction are realized. The invention also discloses a preparation method of the regenerated PC / ABS alloy material for origin restoration and modification by using the macromolecular chain expanding agent.

Description

technical field [0001] The invention belongs to the technical field of regeneration of waste PC / ABS, and in particular relates to a recycled PC / ABS alloy material which is repaired and modified by a macromolecular chain extender and a preparation method thereof. Background technique [0002] Polyacrylonitrile-butadiene-styrene (ABS) and polycarbonate (PC) are two very common plastics, both of which have significant advantages and disadvantages: Among them, ABS has good processability and is relatively cheap , but its heat resistance, weather resistance, and mechanical properties are not ideal; while PC has excellent heat resistance, mechanical properties, and dimensional stability, but it is not resistant to solvents, difficult to process, and prone to stress cracking. [0003] After preparing ABS and PC into PC / ABS alloy material, it can learn from each other in terms of performance, so that compared with PC, it improves the machining performance and reduces stress sensitiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/08C08K5/1539C08K5/1545B29C48/92
CPCB29C48/92B29C2948/92704C08K2201/014C08L55/02C08L69/00C08L2205/03C08L2207/20C08L51/08C08K5/1545C08K5/1539Y02P20/10
Inventor 曹诺符永高王玲万超刘阳
Owner CHINA NAT ELECTRIC APP RES INST
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