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PET alloy material, special compatibilizer thereof and preparation method thereof

A technology of alloy material and toughening agent, which is applied in the field of engineering plastics, can solve the problems that the comprehensive performance of PET alloy cannot meet the actual needs, reduce the reaction efficiency, and the compatibility of the blended two phases is not high, so as to enhance the interface compatibility , increase the reaction efficiency, the effect of wide application value

Inactive Publication Date: 2010-03-17
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation on the quantity of the two reactive functional groups reduces the reaction efficiency between the two during melt processing, and the content of the two-phase graft copolymer formed by this reaction is also limited to a certain extent, thus As a result, the compatibility of the blended two phases is not high, which ultimately determines that the comprehensive performance of the PET alloy cannot meet the actual needs.

Method used

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  • PET alloy material, special compatibilizer thereof and preparation method thereof
  • PET alloy material, special compatibilizer thereof and preparation method thereof
  • PET alloy material, special compatibilizer thereof and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1, preparation graft copolymer (compatibilizer)

[0026] 60g PET, 14g AAc (acrylic acid), 0.4g FeSO 4 ·7H 2 O and 26g of distilled water were added into the reaction flask and mixed uniformly. After standing for 12 hours, nitrogen gas was introduced to remove oxygen and the reaction vessel was sealed. Then put it into Co-60 source for irradiation, the dose rate and absorbed dose are 0.8kGy / h and 30kGy respectively. After the reaction is completed, the homopolymer adsorbed on the surface of the resin is repeatedly washed with distilled water and dried to obtain the compatibilizer provided by the invention, i.e. PET grafted acrylic acid (PET-g-PAA) copolymer, and the grafting ratio is 0.18 %.

Embodiment 2

[0027] Embodiment 2, preparation graft copolymer (compatibilizer)

[0028]60g PET, 14g AAc (acrylic acid), 0.4g FeSO 4 ·7H 2 O and 26g of distilled water were added into the reaction flask and mixed uniformly. After standing for 12 hours, nitrogen gas was introduced to remove oxygen and the reaction vessel was sealed. Then put it into Co-60 source for irradiation, the dose rate and absorbed dose are 1.09kGy / h and 25kGy respectively. After the reaction is completed, the homopolymer adsorbed on the surface of the resin is repeatedly washed with distilled water and dried to obtain the compatibilizer provided by the invention, i.e. PET grafted acrylic acid (PET-g-PAA) copolymer, and the grafting ratio is 0.17 %.

Embodiment 3

[0029] Embodiment 3, preparation graft copolymer (compatibilizer)

[0030] 60g PET, 14g AAc (acrylic acid), 0.4g FeSO 4 ·7H 2 O and 26g of distilled water were added into the reaction flask and mixed uniformly. After standing for 12 hours, nitrogen gas was introduced to remove oxygen and the reaction vessel was sealed. Then put into Co-60 source irradiation, the dose rate and absorbed dose are 1.5kGy / h and 20kGy respectively. After the reaction is completed, the homopolymer adsorbed on the surface of the resin is repeatedly washed with distilled water and dried to obtain the compatibilizer provided by the present invention, i.e. PET grafted acrylic acid (PET-g-PAA) copolymer, and the grafting rate is 0.09 %.

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Abstract

The invention discloses a radiation grafting compatibilizer modified PET alloy material, a special compatibilizer thereof and a preparation method thereof. The graft copolymer consists of a main chainformed by the structural units shown by formula I and a branched chain formed by the structural units shown by formula II; -CH2- in the formula II is connected with -CH2- in the formula I by chemicalbond; and the grafting rate is 0.09-0.18%. The preparation method of the graft copolymer comprises the steps: in inert atmosphere, evenly mixing PET, acrylic acid and polymerization inhibitor and then irradiating to have graft copolymerization reaction, and finally obtaining the graft copolymer; and the irradiation dose rate is 0.8-1.5kGy / h, and the absorbed dose is 20-30kGy. The PET alloy material comprises the components based on parts by weight: 68-85 parts of the PET, 15-20 parts of toughening agent, 0.1-0.2 part of antioxidant and 3-12 parts of the graft copolymer. The PET alloy materialis prepared by evenly mixing the components and melt extrusion. The invention not only expands the application of radiation chemistry in the field of preparing PET engineering material, but also provides the PET alloy material with excellent performance, thus having wide application value.

Description

technical field [0001] The invention belongs to the field of engineering plastics, and relates to a PET alloy material and a preparation method thereof, in particular to a radiation-grafted compatibilization-modified PET alloy material, a special compatibilizer, and a preparation method thereof. Background technique [0002] Thermoplastic polyester polyethylene terephthalate (PET) has a series of excellent characteristics such as light density, high strength, high rigidity, good heat resistance, chemical resistance, and low price, and can be recycled. Therefore, it is widely used in the national economy, national defense industry and high-tech industry, and is an indispensable new material. In addition to being used for fibers, packaging, and hollow containers, PET is also widely used in many fields such as electronic appliances, machinery, automobiles, and medical equipment after toughening and strengthening. [0003] However, due to its own chemical structure and physical...

Claims

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Application Information

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IPC IPC(8): C08F283/02C08F2/46C08L67/02C08L51/08
Inventor 葛学武平翔汪谟贞
Owner UNIV OF SCI & TECH OF CHINA
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