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CO2-propylene oxide copolymer/polypropylene composite and CO2-propylene oxide copolymer/polypropylene foamed plastic

A composite material, propylene oxide technology, applied in the field of foam plastics, can solve the problems of limited application, poor shrinkage resistance, etc., and achieve the effect of good shrinkage resistance and good foaming performance

Active Publication Date: 2016-03-02
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently prepared carbon dioxide-propylene oxide copolymer foam has poor shrinkage resistance, which limits its application in the field of foam plastics to a certain extent.

Method used

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  • CO2-propylene oxide copolymer/polypropylene composite and CO2-propylene oxide copolymer/polypropylene foamed plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of polypropylene graft copolymer

[0048] 1) Preparation of maleic anhydride-styrene grafted polypropylene

[0049] 100 parts by weight of polypropylene particles with a melt index of 2g / 10min are sealed in a polyethylene bag, and irradiated with an electron accelerator (irradiation energy: 2MeV, irradiation dose rate: 25KGy / Pass) at room temperature. , to obtain irradiated polypropylene;

[0050] Mix the irradiated polypropylene, 4.5 parts by weight of styrene and 1.5 parts by weight of maleic anhydride to obtain a mixture; the mixture is melt-blended at 210° C. in a twin-screw extruder, and melt-blended for 3 minutes After extruding and granulating, maleic anhydride-styrene grafted polypropylene particles are obtained.

[0051] The obtained maleic anhydride-styrene grafted polypropylene particles were detected for melt index and grafting rate, and the result was: the melt index (190°C, 2.16kg) of the maleic anhydride-styrene grafted polypropylene particl...

Embodiment 2

[0057] Preparation of carbon dioxide-propylene oxide copolymer / polypropylene foam

[0058] 70 parts by weight of carbon dioxide-propylene oxide copolymer (melt index (190°C, 2.16kg) is 0.5g / 10min; carbonate segment content is 92wt%), 28 parts by weight of polypropylene with a melt index of 2g / 10min, The maleic anhydride-styrene grafted polypropylene particle that the embodiment 1 of 1.8 weight parts makes, the talcum powder (manufacturer: Zhejiang Fenghong New Material Co., Ltd., model: DK-2) of 0.2 weight part in mixer Mix well, and then add the obtained mixture into the twin-screw extruder. The temperature range of the twin-screw extruder is set as: the first temperature zone is 180°C, the second temperature zone is 195±5°C, the third temperature zone is 200±5°C, and the fourth temperature zone is 200±5°C. The temperature zone is 205±5°C, the fifth temperature zone is 200±5°C, the sixth temperature zone is 195±5°C, the seventh temperature zone is 190±5°C, and the die head is...

Embodiment 3

[0061] Preparation of carbon dioxide-propylene oxide copolymer / polypropylene foam

[0062] 20 parts by weight of carbon dioxide-propylene oxide copolymer (melt index (190°C, 2.16kg) is 0.5g / 10min; carbonate segment content is 92wt%), 68 parts by weight of polypropylene with a melt index of 2g / 10min, The maleic anhydride-styrene grafted polypropylene particle that the embodiment 1 of 1.8 weight parts makes, the talcum powder (manufacturer: Zhejiang Fenghong New Material Co., Ltd., model: DK-2) of 4 weight parts in mixer Mix well, and then add the obtained mixture into the twin-screw extruder. The temperature range of the twin-screw extruder is set as: the first temperature zone is 180°C, the second temperature zone is 195±5°C, the third temperature zone is 200±5°C, and the fourth temperature zone is 200±5°C. The temperature zone is 205±5°C, the fifth temperature zone is 200±5°C, the sixth temperature zone is 195±5°C, the seventh temperature zone is 190±5°C, and the die head is ...

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Abstract

The invention belongs to the field of foamed plastics and particularly relates to a CO2-propylene oxide copolymer / polypropylene composite and a CO2-propylene oxide copolymer / polypropylene foamed plastic. The composite is prepared through melt blending of the materials by weight of 10-80 parts of CO2-propylene oxide copolymer, 20-70 parts of polypropylene and 1-8 parts of polypropylene graft copolymer. The composite is prepared through melt blending of the CO2-propylene oxide copolymer, the polypropylene and and the polypropylene graft copolymer, the foamed plastic prepared by the composite has excellent shrinkage resistance and foamability. The foamed plastic is prepared through foaming of the composite and has excellent shrinkage resistance. The test result shows that the shrinkage of the foamed plastic is lower than 9%.

Description

technical field [0001] The invention belongs to the field of foam plastics, in particular to a CO 2 - Propylene oxide copolymer / polypropylene composite and CO 2 - Propylene oxide copolymer / polypropylene foam. Background technique [0002] Foam plastic is a polymer material with plastic as the basic component and contains a large number of bubbles, so it can also be said to be a composite plastic filled with gas. Compared with pure plastics, foamed plastics have many excellent properties, such as light weight, high specific strength, shock load absorption, good heat insulation and sound insulation performance, etc. Therefore, it has been widely used in industry, agriculture, construction, transportation and other fields. Almost all kinds of plastics can be made into foamed plastics, and foam molding has become an important field in plastics processing. At present, the more common foamed plastics mainly include polyurethane foamed plastics, polystyrene foamed plastics, pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/12C08L51/06C08K3/34C08J9/12
CPCC08J9/122C08J2203/06C08J2323/12C08J2369/00C08J2423/12C08J2469/00C08L23/12C08L69/00C08L2203/14C08L2205/03C08L2205/08C08L51/06C08K3/34C08K3/346
Inventor 高凤翔张亚明周庆海王献红
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI