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Multifunctional waste PET and polypropylene in-site fiber-forming composite material prepared by multi-component compatiblizing and toughening agent

A toughening agent and multi-component technology, applied in the direction of single-component polyester rayon, etc., can solve the problems of reduced toughness and poor compatibility of rPET

Inactive Publication Date: 2011-01-12
洛阳石化吉润化工有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the reason why the mechanical properties of rPET in-situ microfibrillation-reinforced PP composites is that compared with the raw material PP, the rigidity is improved and the toughness is reduced, or the opposite situation; Compatibilizer, sometimes plays a positive role, sometimes has a negative role, the reason is: the compatibility between rPET and PP is very poor, without adding or adding compatibilizers similar to PP-g-MA and E-GMA simultaneously with PP and rPET The in-situ fiber-forming composites prepared by the agent failed to form the structural characteristics that should have comprehensive and excellent mechanical properties.

Method used

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  • Multifunctional waste PET and polypropylene in-site fiber-forming composite material prepared by multi-component compatiblizing and toughening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of multi-component controllable reactive compatibilizer and toughening agent:

[0045] a. Raw material ratio: expressed in parts by weight, 70 parts of granular homopolypropylene PP, 24.0 parts of E-type EPDM rubber, 6.0 parts of linear SBS thermoplastic elastomer (S / B is 20 / 80), methyl 17.0 parts of glycidyl acrylate, 6.0 parts of styrene, 1.1 parts of dibenzoyl peroxide;

[0046] The melt flow rate of polypropylene is 6.5g / 10min under the conditions of 230°C and 21.168N.

[0047] B, take various raw materials according to step a, at first join solvent xylene in the reactor, the add-on of described xylene is 8.5 times of above-mentioned raw material gross weight, then add the raw material polypropylene that weighs, elastomer 1 Stir with elastomer 2, heat the jacket with steam, the stirring speed is 80-200r / min, when the temperature rises to 125°C, slowly add the bifunctional reactive monomer and the second monomer, at 125±2°C Stir at low temperature f...

Embodiment 2

[0054] Embodiment 2: the difference with embodiment 1 is:

[0055] (1) Preparation of multi-component controllable reactive compatibilizer and toughening agent:

[0056] a. Raw material ratio: expressed in parts by weight, 64 parts of granular homopolypropylene PP, 28 parts of ethylene-octene copolymer POE, 8 parts of linear SBS thermoplastic elastomer (S / B is 20 / 80), allyl 17.0 parts of glycidyl ether, 6.0 parts of styrene, 1.1 parts of dibenzoyl peroxide;

[0057] b. The amount of xylene added is 8 times the total weight of the above raw materials, and the reaction temperature is 128±2°C.

[0058] Others are the same as embodiment 1.

Embodiment 3

[0059] Embodiment 3: the difference with embodiment 1 is:

[0060] (1) Preparation of multi-component controllable reactive compatibilizer and toughening agent:

[0061]a. Raw material ratio: expressed in parts by weight, 60 parts of powdered homopolypropylene PP, 32 parts of D-type EPDM rubber, 8 parts of linear SBS thermoplastic elastomer (S / B is 30 / 70), acrylic ring 22.0 parts of oxyester resin, 7.5 parts of styrene, 1.5 parts of dibenzoyl peroxide;

[0062] b. The amount of xylene added is 9 times the total weight of the above raw materials, and the reaction temperature is 122±2°C.

[0063] Others are the same as embodiment 1.

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Abstract

The invention discloses multifunctional waste PET and polypropylene in-site fiber-forming composite material prepared from a multi-component compatiblizing and toughening agent. The multi-component controllable reactive compatiblizing and toughening agent is prepared from polypropylene, an elastomer 1, an elastomer 2, a difunctional group reactive monomer, a second monomer and a peroxide initiator. Then, multifunctional waste PET is prepared from an antioxidant and the prepared multi-component controllable reactive compatiblizing and toughening agent and waste PET; and finally, the in-site fiber-forming composite material is prepared by compounding the prepared multifunctional waste PET with polypropylene. The in-site fiber-forming composite material prepared by the technical scheme of the invention has obviously improved toughness (the notch impact strength of a cantilever beam) and rigidity (tensile yield stress and bending elastic modulus) in comparison with the raw material polypropylene and has relatively good reproducibility of mechanical performance; meanwhile, the invention also changes a great amount of waste which mainly refers to waste PET domestically generated every year into resources, thereby having remarkable economic and social benefits.

Description

1. Technical field: [0001] The invention relates to a polymer composite material, in particular to a multi-functional waste polyethylene terephthalate PET and polypropylene PP prepared by using a multi-component controllable reactive compatibilization and toughening agent An in-situ fiber-forming composite material with excellent toughness and rigidity. 2. Background technology: [0002] Modification of large varieties of general-purpose plastic polypropylene to make it high-performance and engineering plastic has always been a hot topic for scientific and technological workers and industrial departments. One of the key scientific and technical problems to be solved is toughening (improving impact strength), but at the same time, it is hoped that the rigidity (tensile yield stress, bending modulus of elasticity) will be less or not reduced, and it is best to improve the rigidity to a certain extent. Among the many scientific methods and technologies for modifying polypropyl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/00D01F6/62C08F291/02C08F255/02C08L23/16C08L23/12C08F287/00C08L53/00C08F255/04C08L67/02
Inventor 赵振辉王经武张力王荣娜梁万军吕亚男曹豫新代佳丽周宝森席志武黑云志
Owner 洛阳石化吉润化工有限责任公司
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