ES2628538T3 - Elastómeros expandibles que presentan rigidez alterable y aplicaciones de los mismos - Google Patents

Elastómeros expandibles que presentan rigidez alterable y aplicaciones de los mismos Download PDF

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ES2628538T3
ES2628538T3 ES14167334.3T ES14167334T ES2628538T3 ES 2628538 T3 ES2628538 T3 ES 2628538T3 ES 14167334 T ES14167334 T ES 14167334T ES 2628538 T3 ES2628538 T3 ES 2628538T3
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optionally
expandable
alterable
stiffness
applications
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Georg J. Kaimann
Ralf Springub
Jürgen WEIDINGER
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Kaimann GmbH
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    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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Abstract

Material elastomérico expandible y reticulable, que comprende: (A) al menos un polímero elastomérico y un sistema de reticulación, o al menos un elastómero termoplástico y opcionalmente, un sistema de reticulación; (E) un sistema de expansión; y (F) al menos una resina reactiva, reticulable, que es un oligómero o (co)polímero que incluye al menos unidades estructurales derivadas de ácido acrílico y/o ácido metacrílico o ésteres de los mismos, que puede tener opcionalmente uno o más dobles enlaces insaturados en la cadena principal o en una cadena lateral de la misma, y que tiene preferiblemente un peso molecular promedio en número de 103 a 107, en el que la resina (F) se proporciona para constituir una red secundaria dentro de la matriz de caucho vulcanizante o fácilmente vulcanizado, pudiendo obtenerse la red secundaria mediante curado por condensación y/o (poli)adición iónica o inducida por radicales.

Description

imagen1
imagen2
imagen3
imagen4
imagen5
las placas de muestra en una máquina Zwick® Z010 con una velocidad de 10 mm/min. La tabla 2 muestra los valores de resistencia a la compresión máximos. La figura 2 muestra en diagramas cómo puede alterarse la respuesta a la compresión mediante tanto la resina como la densidad. Comparando la figura 2b y 2c, por ejemplo, puede observarse que puede alcanzarse una resistencia a la compresión casi idéntica usando dos rutas diferentes: C5-HD o C7-LD.
Tabla 2: Respuesta a la compresión (en newtons) de los ejemplos y el ejemplo comparativo a altas y bajas densidades
Tasa de compresión/densidad
C0* C1 C2 C3 C4 C5 C6 C7
LD 0 %
1 1 1 1 1 1 1 1
LD 10 %
6,3 5,6 7,1 7,1 10,5 14,0 15,4 24,0
LD 20 %
11,5 10,1 12,3 13,2 18,1 21,3 21,4 32,1
LD 50 %
51,1 45,9 46,5 52,4 54,9 62,2 55,7 79,2
HD 0 %
1 1 1 1 1 1 1 1
HD 10 %
9,5 8,3 13,3 22,8 23,6 26,6 32,2 48,8
HD 20 %
15,7 14,8 21,8 32,2 30,7 33,7 39,7 54,1
HD 50 %
55,2 53,4 69,1 75,4 76,2 80,0 91,1 108,4
10
* = ejemplo comparativo
LD/baja densidad = 60 kg/m3; HD/alta densidad = 90 kg/m3
15 Puede observarse a partir de la tabla 2 que hay incluso un efecto de ablandamiento a baja dosificación de F2, ya que la red secundaria o bien está alterando la red de caucho o bien ya que F2 que reacciona lentamente está insuficientemente reticulado. Aumentando el nivel de F2 y/o añadiendo una resina F1 más reactiva, la resistencia a la compresión aumenta significativamente.
7

Claims (1)

  1. imagen1
    imagen2
ES14167334.3T 2014-05-07 2014-05-07 Elastómeros expandibles que presentan rigidez alterable y aplicaciones de los mismos Active ES2628538T3 (es)

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EP14167334.3A EP2942365B1 (en) 2014-05-07 2014-05-07 Expandable elastomers exhibiting alterable stiffness and applications thereof

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DK3244118T5 (da) * 2016-05-10 2021-11-22 Kaimann Gmbh Formet legeme til en fleksibel og ikke-nedsynkende isolering

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GB1069983A (en) 1962-11-19 1967-05-24 Hooker Chemical Corp Phenolic resins for elastomer compositions
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