Waste polypropylene long branched chain material and preparation method thereof

A waste polypropylene, long-chain branched technology, applied in the field of polymer materials, can solve the problems of waste of resources, environment, pollution, etc., and achieve the effects of good mechanical properties and good melt flow.

Inactive Publication Date: 2018-12-07
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both traditional landfill and incineration will cause serious waste of resources and environmental pollution

Method used

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  • Waste polypropylene long branched chain material and preparation method thereof
  • Waste polypropylene long branched chain material and preparation method thereof
  • Waste polypropylene long branched chain material and preparation method thereof

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preparation example Construction

[0034] In the preparation process of waste polypropylene graft, the mass ratio of polypropylene for waste household appliances, initiator, styrene and epoxy functional monomer is 100:0.1~2: 0.1~10: 0.1~10, preferably 100 :0.1~0.5:3~6:3~6, more preferably 100:0.1~0.2:4~5:4~5. The melting temperature of the prepared waste polypropylene graft is preferably 180-210°C, more preferably 185-205°C.

[0035] The present invention has no specific limitation on the equipment used in the melt blending of polypropylene for waste household appliances, initiator, styrene and epoxy functional monomers, preferably a twin-screw extruder well known to those skilled in the art. In the present invention, during the operation of the twin-screw extruder, the temperature of each section from the feeding port to the machine head is preferably 185°C, 190°C, 195°C, 200°C, 205°C, 205°C, 200°C, 190°C, 185°C; the rotational speed of the twin-screw extruder is preferably 82r / min.

[0036] During the blend...

Embodiment 1

[0043]The polypropylene used for waste household appliances was crushed into a particle size of 5-15mm, and then the polypropylene used for household appliances was placed in a vacuum drying oven and dried for 10 hours at a drying temperature of 100°C. After mixing 100g of polypropylene for waste household appliances, 0.2g of dicumyl peroxide, 4.0g of styrene and 4.0g of glycidyl methacrylate, they were added to a twin-screw extruder, and the twin-screw extruder was set. The temperature of each section from the feeding port to the head of the machine: 185°C, 190°C, 195°C, 200°C, 205°C, 205°C, 200°C, 190°C, 185°C, and the screw speed is 82r / min. The material is melt-extruded and granulated to prepare waste polypropylene grafts. The particle size of waste polypropylene grafts is 3-5 mm; the pellets of waste polypropylene grafts are placed in a vacuum drying oven and dried for 10 hours. The drying temperature was 100°C. The waste polypropylene graft of 100g, the maleic anhydride...

Embodiment 2

[0046] The polypropylene used for waste household appliances was crushed into a particle size of 5-15mm, and then the polypropylene used for household appliances was placed in a vacuum drying oven and dried for 10 hours at a drying temperature of 100°C. After mixing 100g of polypropylene for waste household appliances, 0.2g of dicumyl peroxide, 4.0g of styrene and 4.0g of glycidyl methacrylate, they were added to a twin-screw extruder, and the twin-screw extruder was set. The temperature of each section from the feeding port to the head of the machine: 185°C, 190°C, 195°C, 200°C, 205°C, 205°C, 200°C, 190°C, 185°C, and the screw speed is 82r / min. The material is melt-extruded and granulated to prepare waste polypropylene grafts. The particle size of waste polypropylene grafts is 3-5 mm; the pellets of waste polypropylene grafts are placed in a vacuum drying oven and dried for 10 hours. The drying temperature was 100°C. The waste polypropylene graft of 100g, the maleic anhydrid...

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Abstract

Belonging to the field of polymer material science, the invention in particular relates to a waste polypropylene long branched chain material and a preparation method thereof. The waste polypropylenelong branched chain material provided by the invention is prepared by melt blending modification of raw materials. The raw materials include, by weight, 100 parts of waste household appliance polypropylene; 0.1-10 parts of an epoxy functional monomer; 0.1-2 parts of an organic peroxide; 0-5 parts of an anhydride functional monomer; 0.1-10 parts of styrene; and 0.1-2 parts of other additives. The waste household appliance polypropylene has tensile strength of less than 22MPa and notched impact strength of lower than 3kJ/m<2>. The waste household appliance polypropylene long branched chain material has provided by the invention has good mechanical properties. The experimental result shows that the waste household appliance polypropylene long branched chain material has tensile strength higher than 22MPa, notched impact strength higher than 3kJ/m<2> and a melt mass flow rate of less than 12g/10min.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a polypropylene (rPP) long-chain branched material for waste household appliances and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the five general-purpose plastics. Due to its low density, wide processing temperature range, high service temperature, and low price, its consumption in daily household appliances has exceeded that of polystyrene (PS) and propylene. Nitrile-butadiene copolymer (ABS) and other high-performance engineering materials. The proportion of polypropylene in common household appliances is shown in Table 1. Since PP is widely used in daily household appliances, a large amount of waste PP is generated from discarded household appliances. [0003] Table 1 Proportion of PP in household appliances % [0004] [0005] Both traditional landfill and incineration will cause serious waste of resources and environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/08C08K5/1539C08K5/134C08K5/3472C08F283/10C08F212/08C08F220/32
CPCC08F283/10C08K5/1345C08K5/1539C08K5/3472C08L51/08C08F220/325
Inventor 王文生吕利达于新颖李迎春王志强李洁
Owner ZHONGBEI UNIV
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