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Preparation method of modified plastic

A plastic modification technology, applied in the field of preparation of modified plastics, can solve the problems of poor heat resistance, hardness and impact resistance, etc., and achieve the effects of good impact resistance, good comprehensive performance and good corrosion resistance

Inactive Publication Date: 2014-04-23
宁波康氏塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polypropylene (PP) in the prior art has good corrosion resistance, rigidity and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The modified plastic in this example is prepared from the following raw materials in parts by weight: 70 parts of polypropylene, 10 parts of high-density polyethylene, 5 parts of polyethylene octene co-elastomer, 4 parts of polystyrene, and 9 parts of low-density polyethylene , 2 parts of fire retardant.

Embodiment 2

[0015] The modified plastic in this example is prepared from the following raw materials in parts by weight: 68 parts of polypropylene, 9 parts of high-density polyethylene, 6 parts of polyethylene octene co-elastomer, 5 parts of polystyrene, and 10 parts of low-density polyethylene , 3 parts of fire retardant.

Embodiment 3

[0017] The modified plastic in this example is prepared from the following raw materials in parts by weight: 65 parts of polypropylene, 11 parts of high-density polyethylene, 7 parts of polyethylene octene co-elastomer, 7 parts of polystyrene, and 9 parts of low-density polyethylene , 1 part of fire retardant.

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PUM

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Abstract

The invention discloses a preparation method of a modified plastic; the preparation method is as follows: weighing raw materials for stirring for 5 to 10 minutes in a high-speed mixer in a speed of 800-1200 rpm, discharging until the raw materials are uniform, wherein the raw materials comprises the following compositions: by weight, 65-75 parts of polypropylene, 9-12 parts of high density polyethylene, 4-9 parts of polyethylene-octene co-elastomer, 3-10 parts of polystyrene, 9-12 parts of low density polyethylene and 1-3 parts of a fireproof flame retardant; adding the discharged raw materials which are uniformly mixed into a double screw extruder, wherein the processing temperature of double screw extruder is that: the first zone temperature is 190 DEG C, the second zone temperature is 210 DEG C, the third zone temperature is 230 DEG C, the fourth zone temperature is 210 DEG C, the fifth zone temperature is 215 DEG C, the sixth zone temperature is 225 DEG C, the seventh zone temperature is 235 DEG C, and the eighth zone temperature is 240 DEG C, the rotational speed of a main engine is 300-400 rpm; and after extrusion, cooling for strip traction and air drying for sized dicing to obtain the modified plastic; and the modified plastic prepared by the preparation method has good comprehensive properties.

Description

technical field [0001] The invention relates to the technical field of plastics preparation, in particular, the invention relates to a preparation method of modified plastics. Background technique [0002] Polypropylene (PP) in the prior art has good corrosion resistance, rigidity and transparency, but this plastic has poor heat resistance, hardness and impact resistance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing modified plastics. The plastics prepared by the method have good comprehensive properties, not only have good corrosion resistance, transparency and rigidity; heat and hardness; but also has fire and flame retardant properties. [0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a preparation method of modified plastics, said method comprising: [0005] Step 1), weigh the raw materials, stir in a high-speed mi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L23/08C08L25/06B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L23/12C08L2201/02C08L2201/08C08L2201/10C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L23/06C08L23/0815C08L25/06B29B7/46B29B7/72B29B9/12B29C48/04B29C48/05B29C48/40B29C48/875B29C48/911B29C2948/9259B29C2948/92676B29C2948/92885B29C2948/92895
Inventor 王永旺康建训
Owner 宁波康氏塑料科技有限公司
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