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Polyolefin composite material filled with modified gangue powder and method for preparing same

A technology of coal gangue powder and composite material, which is applied in the field of polyolefin composite material and its manufacturing, can solve the problems that the mechanical properties of the composite material cannot meet satisfactory requirements, the comprehensive performance cannot be improved simultaneously, and the process flow is long, so as to promote comprehensive utilization. , the effect of enhanced toughness and simple process

Inactive Publication Date: 2005-06-29
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of method improves some properties of polyolefin to a certain extent, and can also reduce the cost to a certain extent, it cannot simultaneously improve its comprehensive performance, and because the coal gangue powder needs to be calcined before it can be modified. For filled polyolefins, there is no doubt that its process flow is long, energy consumption is high, and cost reduction is limited
If the coal gangue powder without calcination treatment is used directly, the process can be simplified and the cost can be reduced, but the mechanical properties of the composite material are difficult to meet the satisfactory requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Processing of coal gangue powder At room temperature, the degree of epoxidation is 50% polydiene rubber epoxidized aqueous emulsion, based on the dry rubber contained therein, in a weight ratio of 4: 100 with coal gangue powder The ratio is sprayed and dispersed on the surface of coal gangue powder stirred at high speed, and after it is mixed and dispersed evenly, it is dried at ≤100°C until the water content of the material is less than 0.1%.

[0025] (2) Preparation of composite materials Put the polypropylene pellets into the rubber-plastic internal mixer at a speed of 25 to 35 rpm and a temperature of 170°C. After plasticizing for 3 minutes, the weight of polypropylene and coal gangue powder The ratio is 100:15. Add the surface-treated coal gangue powder into the high-temperature plasticized polypropylene, and continue mixing for 7 minutes; take it out and cool it to room temperature, and use a plastic crusher to make polypropylene filled with modified coal gangu...

Embodiment 2

[0027] (1) Processing of coal gangue powder At room temperature, the degree of epoxidation is 25% polydiene rubber epoxidized aqueous emulsion, based on the dry rubber contained therein, in a weight ratio of 8: 100 with coal gangue powder The ratio is sprayed and dispersed on the surface of coal gangue powder stirred at high speed, and after it is mixed and dispersed evenly, it is dried at ≤100°C until the water content of the material is less than 0.1%.

[0028] (2) Preparation of composite materials Put polyethylene pellets into a rubber-plastic internal mixer, at a speed of 25 to 35 rpm, at a temperature of 210°C, after plasticizing for 5 minutes, mix according to the weight of polyethylene and coal gangue powder The ratio is 100:70, adding the surface-treated coal gangue powder into the high-temperature plasticized polyethylene, and continue mixing for 10 minutes; take it out and cool to room temperature, and use a plastic crusher to make polythene filled with modified coal...

Embodiment 3

[0030] (1) Processing of coal gangue powder At room temperature, the degree of epoxidation is 15% polydiene rubber epoxidized aqueous emulsion, based on the dry rubber contained therein, in a weight ratio of 20:100 with coal gangue powder The ratio is sprayed and dispersed on the surface of coal gangue powder stirred at high speed, and after it is mixed and dispersed evenly, it is dried at ≤100°C until the water content of the material is less than 0.1%.

[0031] (2) Preparation of composite materials Put the polypropylene pellets into the rubber-plastic internal mixer at a speed of 25 to 35 rpm and a temperature of 190°C. After plasticizing for 4 minutes, the weight of polypropylene and coal gangue powder The ratio is 100:50. Add the surface-treated coal gangue powder into the high-temperature plasticized polypropylene, and continue mixing for 8 minutes; take it out and cool it to room temperature, and use a plastic crusher to make polypropylene filled with modified coal gangu...

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Abstract

Disclosed is a polyolefin component material filed with modified coal slack power, which is produced through the technical equipment and steps the invention has supplied, with the mass ratio of modified coal slack containing polydiolefin epoxy rubber whose mass ratio with it is 2-20:100, and polyolefin being 10-70:100. The modified coal slack powder having been processed by polydiolefin epoxy rubber is easy to disperse,a nd the surface binding force of it and resin substrateis increased, as well as its comprehensive performances has been advanced, be sides it has simple productive course, low few rubber, low price, the modified coal slack powder need not to be burnt, which can save energy and cost and will not destroy the productive course and pollute the environment.

Description

1. Technical field [0001] The invention belongs to the technical field of polyolefin composite material and its manufacture, and in particular relates to a polyolefin composite material filled with modified coal gangue powder and a preparation method thereof. 2. Background technology [0002] Filling and compounding is one of the important modification methods of polyolefin. Through the filling composite technology, the material cost can be greatly reduced, the rigidity, heat resistance and dimensional stability of polyolefin can be significantly improved, new characteristics can be given to the material, and its application range can be expanded. [0003] Coal gangue is a rock associated with coal. It is a solid waste that is separated during coal mining and washing. Less than 30%. The coal gangue powder obtained by directly crushing coal gangue as a filler for the preparation of polymer composite materials has broad prospects and good social benefits, because coal gangue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08L23/00
Inventor 杨伟谢邦互杨鸣波李忠明冯建民
Owner SICHUAN UNIV
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