WO2020082146A2 - Procédé d'encapsulation de motoeur obtenu avec un composite de polypropylène et poudre de caoutchouc de pneu, et article pour encapsulation de moteur - Google Patents

Procédé d'encapsulation de motoeur obtenu avec un composite de polypropylène et poudre de caoutchouc de pneu, et article pour encapsulation de moteur Download PDF

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Publication number
WO2020082146A2
WO2020082146A2 PCT/BR2019/050457 BR2019050457W WO2020082146A2 WO 2020082146 A2 WO2020082146 A2 WO 2020082146A2 BR 2019050457 W BR2019050457 W BR 2019050457W WO 2020082146 A2 WO2020082146 A2 WO 2020082146A2
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WO
WIPO (PCT)
Prior art keywords
composite
tire
engine encapsulation
polypropylene
powder
Prior art date
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PCT/BR2019/050457
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English (en)
Portuguese (pt)
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WO2020082146A3 (fr
Inventor
Fabio Furlan FERREIRA
Kelly Cristina De Lira LIXANDRÃO
Original Assignee
Fundação Universidade Federal Do Abc - Ufabc
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Publication date
Priority claimed from BR102018071730-8A external-priority patent/BR102018071730B1/pt
Application filed by Fundação Universidade Federal Do Abc - Ufabc filed Critical Fundação Universidade Federal Do Abc - Ufabc
Publication of WO2020082146A2 publication Critical patent/WO2020082146A2/fr
Publication of WO2020082146A3 publication Critical patent/WO2020082146A3/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L15/00—Compositions of rubber derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the Engine Encapsulation Method obtained with polypropylene composite and tire rubber powder, and article for engine encapsulation, object of the present patent, is intended for the automotive market, mainly the Brazilian one, which is one of the main markets the world, whose production growth has increased significantly in the last ten years, aiming at alternative and sustainable materials for parts production.
  • the Engine Encapsulation Method obtained with polypropylene composite and tire rubber powder, and article for engine encapsulation, object of this patent, aims to produce automotive parts, especially those related to noise reduction, such as the part for encapsulating the engines of vehicles, with alternative materials that are environmentally friendly, cheaper and more efficient.
  • tires When tires are abandoned in inappropriate places, they can serve as a means for the development of disease vectors; obstruct the water ducts, increasing the risk of flooding; represent a fire risk, contaminating the air with toxic smoke, containing pollutants such as carbon and sulfur, in addition to the release of oil that can contaminate the water table.
  • the invention is based on the use of waste rubber tire powder as particulate reinforcement material in the polypropylene matrix, via extrusion, to be applied to commercial vehicle engine encapsulation. Its use aims to properly dispose of waste tires and ensure a reduction in the weight of the part and, consequently, of the vehicle, optimizing its fuel consumption and reducing the emission of pollutants, in addition to ensuring a minimization of noise pollution, through noise attenuation by the composite.
  • the production and commercialization of parts manufactured with the composite can contribute with a double benefit to the environment: reduction of waste tire deposition in the environment and reduction of gas emissions generated by fuels, due to its lower consumption, due to the lower weight of the encapsulation part (the composite material weighs approximately 54% less than the standard material), in addition to having a cost reduction of approximately 30%, proving its industrial viability.
  • the Engine Encapsulation Method obtained with polypropylene composite and tire rubber powder, and article for engine encapsulation, object of the present patent provides a suitable destination for waste tires motivated by the minimization of environmental impacts, for the fact that their decomposition time in nature is indeterminate and for the prevention of public health, as they serve as breeding grounds for disease-causing insects; besides, for each burnt tire, ten liters of oil are released, which can contaminate the soil and the water table and gases containing toxic and carcinogenic substances, as well as by minimizing noise pollution, through noise attenuation by the composite used.
  • the production process involves the granulation of tire rubber powder and mixing with thermoplastic polymer in a mono or double screw extruder, for granulation and subsequent forming in plastic artifacts by injection, thermoforming, rotomolding and compression processes, with application in industry furniture, automotive and civil construction.
  • Patent documentPI 07041 18-7 THERMOPLASTIC ELASTOMER COMPOSITIONS USING REGENERATED RUBBER FROM INSERVABLE TIRES AND MOLDED ARTICLES, where thermoplastic elastomer compositions are described from the mixture of olefinic polymer, recycled and non-recycled and non-recycled elastomeric polymer. olefinic polymer with regenerated elastomer from a waste tire, dynamically vulcanized, resulting in a thermoplastic elastomer with improved mechanical properties.
  • the waste tire elastomer is mixed with the olefinic polymer in the proportion of 2 to 60% by weight and with a particle size between 0.0141 mm and 0.131 mm (25 and 80 meshtyler).
  • thermoplastic elastomer compositions using regenerated rubber from waste tires and molded articles for different applications
  • compositions obtained from the inventive process as well as the artifacts obtained by revulcanizing the compositions.
  • the artifacts find application as vehicle mats and for civil construction, soles, industrial mats, mixed with virgin elastomer for making tires and similar uses.
  • This document describes the process for obtaining regenerated elastomer, the composition of regenerated elastomer and various articles based on recycled rubber.
  • the invention deals with composition for insulating mass that has different uses, such as varied shapes, varied dimensions, reduced costs due to the low consumption of electrical energy for using few machines in its production and use of materials taken from the trash, contribution to the environment in the use of materials taken from the trash.
  • the characteristics of the invention include sound insulation, moisture insulation and good mechanical resistance.
  • Its manufacture consists of reducing the tire in sizes as desired, through a scraper or crusher or drain, controlling the sizes of grains or particles according to planning and design; after this stage the mixer is passed and other materials are added, such as cement, hydrated lime powder, waterproofing powder and stone or sand with the use of water to homogenize and constitute the alloy between the components, with varying mixing proportions .
  • the mass of the invention can also be distributed in an open area with the aid of suitable tools such as trowel, trowel, ruler and others that enable the good distribution of the mass, thus making it possible to be used in various sectors such as the sectors of civil construction, architecture, manufacture of parts, toys and others according to projects.
  • ceilings and tables for building ceilings, building floors and counter-floors, tiles in any shape, solid bricks or with different holes and shapes, solid blocks or with different holes and shapes, windows, doors and others.
  • composition for insulating putty whose invention with a composition for insulating putty has different uses, such as different formats, different dimensions used in different sectors such as civil construction, architecture, manufacture of pieces, toys and others as projects;
  • the patent document PI 1107324-1 FORMULATION OF COMPOSITE MATERIAL BASED ON NATURAL RUBBER AND RUBBER (LATEX) FOR THERMAL INSULATION, concerns the use of waste from tires (tire residue) combined with rubber natural (latex) as constituent raw materials in the formulation of a composite material for the manufacture of coatings for thermal insulation in the form of pressed blankets / plates, as well as the corresponding process of manufacturing coatings for thermal insulation containing said tire residue and the natural rubber in its composition.
  • Said tire performs the function of structure-forming raw material (reinforcement) and natural rubber, the function of liquid phase-forming raw material (matrix).
  • compositions of the composite material containing the aforementioned tire residue and natural rubber (latex) are compatible with the processing steps normally employed by thermal insulation manufacturers, that is, they are compatible and suitable for processing according to the following general processing steps 1 â step: selection and storage of raw materials; 2 stage: regarding the dosage of raw materials; 3 stage: mixing the raw materials constituting the composite material in a manual or mechanical or electric mixer; 4 step: confirmation of composite material in molds in the form of blankets; 5 stage: drying the blankets; and 6 stage: demoulding of the dry blankets.
  • the use of tire waste combined with natural rubber (latex), according to the general steps exemplified, is perfectly compatible from a technical point of view with the technologies currently employed by the thermal insulation coatings sector in Brazil and worldwide.
  • the invention offers a solution that incorporates and improves the adhesion between used tire rubber granules and the polymeric matrix, due to the addition of an agent of compatibilization that, in addition to making the materials compatible, enhances the homogeneity of the mixture, making it possible to obtain a material with good mechanical properties and a good surface appearance.
  • the invention consists of providing new material formulations incorporating rubber from tires used in matrices of thermoplastic polymers, using a compatibilizing agent. Rubber tire compound products used in a polymer matrix are obtained from this mixture, together with additives to improve the final properties of the composite.
  • the cost is of prime importance to compete with products made from raw materials and, therefore, this method aims to reduce the cost of the product and the relative amount of raw material used, as well as the reuse of recycled rubber.
  • Patent document CN101412854 discloses a soft damping plate for vibration absorption and noise reduction.
  • the soft damping plate is prepared from the following raw materials by weight: 45 to 50 portions of asphalt as a base material, 18 to 20 portions of residual rubber powder, 24 to 31 portions of mud powder and 4 to 5 portions of fine sand that are used as fillers, 2 to 3 portions of polypropylene as a temperature resistant additive and fiberglass cloth as a tire base adopts.
  • the materials are extruded and shaped by heating in a stirring machine.
  • the soft damping plate for vibration absorption and noise reduction is prepared by adopting raw materials with a wide source and low price and a new mixing ratio. Through the actual measurement, the waste factor of the soft damping plate reaches more than 0.5; noise can be reduced by more than 10 decibels; the effect of vibration absorption and noise reduction belongs to the upper intermediate degree; and under the condition of equivalent noise reduction, the cost of the soft damping plate is less than a third of that of a commercial soft damping plate.
  • the soft damping plate can substantially reduce the cost of noise reduction and has good environmental, economic and social benefits.
  • the soft damping plate is applied to the control of vibration of a fan duct in a power plant and other large companies, reducing duct noise and presenting notable comprehensive benefits.
  • the material from the waste ground plastic tire rubber is obtained by a process comprising the steps of: mixing 10 to 50% by weight of ground rubber tire powder with polyethylene resin waste; add 5-20% by weight of polypropylene as an organic additive and 5-20% by weight of an adhesive resin comprising a polyolefin resin and maleic anhydride in the proportion of 1: 0, 3-0, 4 with respect to the tire mixture polyethylene / ground rubber; mixing and melting at 130-180 ° C. And the molded product of the waste plastic / rubber tire is produced by injection or extrusion molding of the complex material.
  • a low cost polyethylene or polypropylene with good processing capacity is preferably used as a thermoplastic resin when recycling cross-linked rubber, etc., from tire waste.
  • the composite powder is obtained by loading a mixture of coarse-grained polymer particles with thermoplastic resin into an extruder or kneading machine and an extruder and or kneading machine and spraying the kneaded and extruded material by high shear force at a lower temperature for 10 to 50 ° C than the melting temperature of the thermoplastic resin.
  • the mixing amount of the crosslinked polymer is preferably 50 to 90%.
  • This document describes a preliminary assessment of the partial or total replacement of natural rubber (NR) by tire powder, originating from tire chips, in blends of PP-NR aiming at the potentiality / possibility of recycling tire rubber;
  • C2C8 did not act as a nucleating agent, with a melting temperature lowering and crystallization was influenced by cooling rates.
  • One of the greatest benefits of the work was the possibility of adding a large amount of tire rubber powder to the matrix, maintaining the impact resistance properties. In this sense, decreased material costs.
  • This document describes a polymeric matrix composition with tire powder for recycling tires for various uses.
  • Figure 1 shows a schematic of the Tactical Configurations of the PP: (a) isotactic, (b) unionist and (c) atactic; [040]
  • Figure 2 shows the graph of Transmission loss of composites with 20% and 30% tire powder. Configuration: wide tube;
  • Figure3 shows the Transmission loss of composites with 20% and 30% tire dust. Configuration: narrow tube;
  • Figure 4 shows a schematic of the (a) view of the chassis with the engine package and (b) prototype of the engine package.
  • composite materials are joints of two or more different materials, designed to exhibit a better combination of the characteristics of each of the components and, according to ASTM D3878, are materials made up of two or more substances, selected for form a material that exhibits desirable characteristics, presenting properties that are not found in the materials alone.
  • Most composites are formed by two phases: a matrix, which is the continuous phase and which surrounds the other phase, called the dispersed phase.
  • a matrix which is the continuous phase and which surrounds the other phase
  • dispersed phase virgin isotactic polypropylene (iPP) resin and recycled polypropylene were used as a matrix and the rubber tire powder as a dispersed phase.
  • Polypropylene (PP) is a thermoplastic polymer, white and opaque, with a density around 0.90 g.cm 3 and a semicrystalline structure, which gives it high mechanical resistance, rigidity and hardness.
  • PP contains a series of asymmetric carbons along the chain.
  • CFI3 isotactic PP
  • sPP syndiotactic PP
  • aPP atactic PP
  • the iPP is a polymer with a simple chemical structure, it has a complexity of crystalline structures, as it is a polymorphic material. Polymorphism represents the property of a substance to exist in two or more crystalline forms or structures; therefore, the iPP presents different types of crystalline structures: monoclinic (a), trigonal (b), orthorhombic (g) and mesomorphic smear (d).
  • Some of the properties of PP are: high chemical resistance to solvents and moisture, good resistance to bad weather [20] and easy recycling; in addition to being a material of great industrial importance due to its low density and low cost, compared to other polymers.
  • Recycled polypropylene resin is used in this method because it has a lower price than that of virgin resin, favoring cost reduction and increasing competitiveness.
  • the tire according to CONAMA Resolution 258/99 is all inflatable artifact, consisting basically of rubber and reinforcement materials used for running vehicles.
  • rubber naturally or synthetic
  • the other components of the formulation creating a mixture that is subjected to the vulcanization process and later coupled to the steel structure.
  • this mixture that originated the tire is composed of natural rubber (NR), synthetic rubber (styrene-butadiene - SBR), carbon black (reinforcing agent), hydrocarbons (plasticizers), sulfur and its derivatives (agents vulcanization), accelerating agents, antioxidants and stabilizers, which act as protective agents.
  • natural rubber NR
  • synthetic rubber styrene-butadiene - SBR
  • carbon black reinforcing agent
  • hydrocarbons plasticizers
  • sulfur and its derivatives antioxidants and stabilizers, which act as protective agents.
  • the raw materials used in the processing of composites are: virgin polypropylene resin, recycled polypropylene resin, scrap rubber powder (20% and 30%) and ethylene-vinyl acetate.
  • Tire rubber powder is obtained from a mechanical process, by crushing waste tires, whose metals and fabrics were extracted from the mixture, leaving only the rubber compounds with an average particle size of 0.5 mm.
  • the raw material (rubber tire powder, virgin polypropylene resin, recycled polypropylene resin and / or ethylene-vinyl acetate) is supplied in the extruder for processing.
  • the composite from the extrusion is obtained in a plate format with a thickness of approximately 5 mm, which is then thermoformed to obtain the desired part, weighing approximately 5.5 kg.
  • the raw materials used in the processing of the composites were: virgin polypropylene resin, recycled polypropylene resin, scrap rubber powder and ethylene-vinyl acetate.
  • Table 1 presents a comparison of the tensile mechanical properties of PP, PPr, PP20% composite and PP30% composite.
  • the external noise test was performed in the proving ground, rented exclusively by Mercedes-Benz Brasil, in Campinas, km 31, using microphones model 4189-A-021, microphone calibrator model BK 4231, radar model CAPT208DTX and tachometer model 8000 Pro. All equipment used to perform the noise level measurement tests were calibrated by accredited laboratories, belonging to the Brazilian Calibration Network.
  • the engine encapsulation prototype was tested on a 14 ton truck, 8715 mm long, maximum power of 2200 rpm, speed maximum angle of 2600 rpm, idle speed of 600 rpm, maximum torque of 1200 - 1600 rpm, rear axle 4x2, with 6 gears in total - except reverse gear, using diesel fuel as fuel and with the 6 tires calibrated at 80/75 psi pressure.
  • the test was carried out at an ambient temperature of 29.9 ° C, with a wind speed of 5.0 ms 1 , relative humidity of 37.0% and runway temperature of 34.7 ° C.
  • the test results were obtained using the Pulse Labshop software.
  • the Engine Encapsulation Method obtained with polypropylene composite and tire rubber powder, and motor encapsulation article, object of the present patent describes the development of a polypropylene composite and tire rubber powder to be used in vehicle engine encapsulation commercial, as described above, where from the acoustic analyzes of Transmission Loss, it was possible to verify that the results were similar both with the use of 20% and 30% of rubber tire powder and by the analysis of External Noise can if it is proved that the polypropylene composite with tire rubber powder, presented values of noise level very close to those presented by the standard part, in addition to having a value within the established limit, which compared with the standard part has great advantages.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tyre Moulding (AREA)

Abstract

L'invention concerne un nouveau procédé d'encapsulation de moteur obtenu avec un composite de polypropylène et de poudre de caoutchouc de pneu, et un article pour encapsulation de moteur, lequel consiste en une pièce spécifique pour l'encapsulation de moteur de véhicules à moteur commerciaux en vue d'une réduction du bruit de ces moteurs, constituée par un composite de polypropylène et une poudre de caoutchouc de pneu spécialement mis au point à cet effet, en remplacement des matériaux classiques actuellement utilisés contribuant à la préservation de l'environnement du fait d'une utilisation finale appropriée des pneus usés, évitant une mise au rebut inappropriée de ceux-ci et réduisant les coûts en matériau de fabrication de la pièce d'encapsulation des moteurs.
PCT/BR2019/050457 2018-10-23 2019-10-23 Procédé d'encapsulation de motoeur obtenu avec un composite de polypropylène et poudre de caoutchouc de pneu, et article pour encapsulation de moteur WO2020082146A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102018071730-8A BR102018071730B1 (pt) 2018-10-23 Método de obtenção de compósito de polipropileno e pó de borracha de pneu, compósito, e artigo para encapsulamento de motor
BRBR1020180717308 2018-10-23

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WO2020082146A2 true WO2020082146A2 (fr) 2020-04-30
WO2020082146A3 WO2020082146A3 (fr) 2020-06-11

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157082A (en) * 1990-11-13 1992-10-20 Synesis Corporation Thermoplastic compositions containing ground vulcanized rubber and polyolefin resin
EP1362889A1 (fr) * 2002-05-15 2003-11-19 Polynauve S.A.R.L. Matériaux de récupération à base de caoutchouc recycle, son procédé de préparation et ses utilisations
JP4390712B2 (ja) * 2003-03-31 2009-12-24 ピレリ・アンド・チ・ソチエタ・ペル・アツィオーニ 細分割形態の加硫ゴムを含む熱可塑性材料
FR2868354B1 (fr) * 2004-03-30 2007-08-03 Mann & Hummel Gmbh Utilisation de granules de caoutchouc(s) vulcanise(s) pour ameliorer les proprietes vibro-acoustiques d'enveloppes protectrices d'organes de mecanismes realisees en un materiau thermoplastique
FR2903110B1 (fr) * 2006-06-29 2010-08-27 Rech S Et De Controle Du Caout Melange multiphasique a base de granulats d'elastomeres reticules dans une matrice polymerique a transformation thermoplastique
ES2336184B2 (es) * 2008-07-11 2011-04-07 Maier, S. Coop. Conjunto rejilla bajoparabrisas provisto de aislamiento acustico con caucho triturado.

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BR102018071730A2 (pt) 2019-07-09
WO2020082146A3 (fr) 2020-06-11

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