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Improved grp (glass-fiber-reinforced plastic) monofilament

A composite material and glass resin technology, applied in the reinforcement layer of pneumatic tires, other household appliances, transportation and packaging, etc., can solve problems such as the collapse of CVR monofilament structures

Active Publication Date: 2016-03-16
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] It is particularly surprising to note that when these prior art CVR monofilaments are used as belt reinforcements for certain pneumatic tires, during the manufacture of these tires it is especially known that high pressures and extremely high temperatures (often These prior art CVR monofilaments may undergo a certain amount of compression cracking due to a significant collapse of their structure during the final step of curing these tires in the mold, carried out at temperatures greater than 160° C.

Method used

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  • Improved grp (glass-fiber-reinforced plastic) monofilament

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Embodiment Construction

[0031] In this patent application, unless otherwise indicated, all percentages (%) shown are percentages by weight.

[0032] Furthermore, any numerical range represented by the expression "between a and b" represents a numerical range from greater than a to less than b (i.e., excluding endpoints a and b), while any numerical range represented by the expression "a to b" By range is meant a range of values ​​extending from a to b (ie, including the strict endpoints a and b).

[0033] The present invention therefore relates to a monofilament made of glass resin composite (abbreviated CVR) comprising glass filaments embedded in a crosslinked resin, characterized in that:

[0034] - said resin has a glass transition temperature (expressed as Tg) equal to or greater than 190°C;

[0035] - said monofilament has an elongation at break (expressed as Ar) equal to or greater than 4.0% measured at 23°C;

[0036] - the initial tensile modulus (in E) of the monofilament measured at 23°C ...

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Abstract

The invention relates to a monofilament made of glass-fiber-reinforced plastic having improved compression properties, particularly at a high temperature. Said monofilament comprises glass filaments encased in a cured resin and is characterized in that: the glass transition temperature of the resin no lower than 190DEG C; the monofilament rupture elongation, measured at 23DEG C, is no lower than 4.0%; the initial monofilament extension module, measured at 23DEG C, is greater than 35 GPa; and the actual portion of the complex module of the monofilament, measured at 190DEG C by the DTMA method, is greater than 30 GPa. The invention is useful in pneumatic and non-pneumatic tires reinforced with such a composite monofilament.

Description

technical field [0001] The field of the invention is that of composite reinforcements that can be used in particular to reinforce semi-finished or finished products made of rubber, such as vehicle tires of the pneumatic or non-pneumatic type. [0002] More specifically, the present invention relates to monofilaments of CVR (which is an abbreviation for Glass Resin Composite) type having high mechanical properties, said monofilaments comprising continuous unidirectional multifilament glass fibers embedded in a resin, said monofilaments Can be used in particular as a reinforcing element (or "reinforcement") for these tires. Background technique [0003] In order notably to reduce the weight of the tire and to compensate for the various problems of corrosion, tire designers have long sought to find reinforcements of low-density textile or composite material that could advantageously and effectively replace conventional wires or cords. [0004] Thus, patent application EP116708...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/18C08J5/08D02G3/40
CPCD02G3/18D02G3/404B29D2030/383D10B2505/02D10B2505/022B60C7/00B60C7/24B60C9/0028B60C9/0042B60C9/005B60C9/02B60C9/2003B60C15/04B60C2009/0071B60C2009/0078B60C2009/2074B60C2009/2077B60C2009/208B60C2009/2093B60C2015/042C08J5/043C08J2331/02
Inventor A·德尔菲诺J-P·梅拉尔迪
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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