摘要:
Process for manufacturing a self-sealing elastomer composition, wherein the process comprises the following steps: firstly a masterbatch comprising at least one diene elastomer and a thermoplastic plasticizing hydrocarbon resin with a content greater than 30 phr is manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding temperature” which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything, in the same mixer or in a different mixer, at a temperature or up to a maximum temperature which is kept below 100° C., in order to obtain said self-sealing composition, and wherein at least one liquid plasticizer having a glass transition temperature (Tg) below −20° C. is furthermore incorporated in an amount of less than 60 phr into said masterbatch or into said composition.
摘要:
A process for manufacturing a self-sealing elastomer composition, said process comprising the following steps: a masterbatch, comprising at least one diene elastomer and more than 30 phr of a hydrocarbon resin, is firstly manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding” temperature which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything in the same mixer or in a different mixer, at a temperature or up to a temperature which is kept below 100° C., in order to obtain said self-sealing composition.
摘要:
A process for manufacturing a self-sealing elastomer composition, said process comprising the following steps: a masterbatch, comprising at least one diene elastomer and more than 30 phr of a hydrocarbon resin, is firstly manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding” temperature which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything in the same mixer or in a different mixer, at a temperature or up to a temperature which is kept below 100° C., in order to obtain said self-sealing composition.
摘要:
Process for manufacturing a self-sealing elastomer composition, wherein the process comprises the following steps: firstly a masterbatch comprising at least one diene elastomer and a thermoplastic plasticizing hydrocarbon resin with a content greater than 30 phr is manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding temperature” which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything, in the same mixer or in a different mixer, at a temperature or up to a maximum temperature which is kept below 100° C., in order to obtain said self-sealing composition, and wherein at least one liquid plasticizer having a glass transition temperature (Tg) below −20° C. is furthermore incorporated in an amount of less than 60 phr into said masterbatch or into said composition.
摘要:
A self-sealing elastomer composition that can be used especially as a puncture-resistant layer in an inflatable article, comprising: as predominant elastomer, an unsaturated diene elastomer; a thermoplastic hydrocarbon plasticizer resin with a weight content of between 30 and 90 phr; a liquid plasticizer, the Tg (glass transition temperature) of which is below −20° C., with a weight content between 0 and 60 phr; and 0 to less than 30 phr of a filler. Also disclosed is an article such as a tire provided with the puncture-resistant layer comprising the self-sealing elastomer composition. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the inflatable article, a puncture-resistant airtight laminate.
摘要:
A self-sealing elastomer composition that can be used especially as a puncture-resistant layer in an inflatable article, comprising: as predominant elastomer, an unsaturated diene elastomer; a thermoplastic hydrocarbon plasticizer resin with a weight content of between 30 and 90 phr; a liquid plasticizer, the Tg (glass transition temperature) of which is below −20° C., with a weight content between 0 and 60 phr; and 0 to less than 30 phr of a filler. Also disclosed is an article such as a tire provided with the puncture-resistant layer comprising the self-sealing elastomer composition. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the inflatable article, a puncture-resistant airtight laminate.
摘要:
Self-sealing elastomer composition that can be used especially as a puncture-resistant layer in an inflatable article, comprising: as predominant elastomer, an unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; and 0 to less than 30 phr of a filler. Also disclosed is an article such as a tire provided with a puncture-resistant layer comprising the self-sealing elastomer composition. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the inflatable article, a puncture-resistant airtight laminate.
摘要:
Self-sealing elastomer composition that can be used especially as a puncture-resistant layer in an inflatable article, comprising: as predominant elastomer, an unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; and 0 to less than 30 phr of a filler. Also disclosed is an article such as a tire provided with a puncture-resistant layer comprising the self-sealing elastomer composition. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the inflatable article, a puncture-resistant airtight laminate.
摘要:
An elastomer composition having a self-sealing property includes: a blend of at least two solid elastomers, in which “elastomer A” is a polybutadiene or butadiene copolymer elastomer, in which “elastomer B” is a natural rubber or synthetic polyisoprene elastomer, and in which an elastomer A:elastomer B weight ratio is within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin, with phr meaning parts by weight per 100 parts of solid elastomer; and from 0 to less than 120 phr of filler, which includes from 0 to less than 30 phr of reinforcing filler. The composition may be used to form a puncture-resistant layer in an inflatable article, such as a tire. The puncture-resistant layer may be used in combination with an airtight layer to form an airtight and puncture-resistant laminate for the inflatable article.
摘要:
Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as “elastomer A”, and a natural rubber or synthetic polyisoprene elastomer, referred to as “elastomer B”, the elastomer A:elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler, in which, during a first stage or stage (a), a masterbatch comprising at least the elastomers A and B and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a “hot compounding” temperature or up to a “hot compounding” temperature which is greater than the softening temperature of the hydrocarbon resin.