Method for processing a high temperature resistant thermosetting material
AssigneeKeki Hormusji GHARDA
InventorsKeki Hormusji Gharda, Prakash D. Trivedi, Tushar R. Parida, Amitkumar Biradar
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Abstract
The present disclosure provides a polymeric composition resistant to temperatures comprising Poly 2,5rBenzimidazole having intrinsic viscosity (I.V.) between 1.0 and 2.5; and at least one binder having a glass transition temperature less than the glass transition temperature of Poly2,5-Benzimidazole and intrinsic viscosity ranging between 0.2 and 1.5. The present disclosure also provides a process for preparing the polymeric composition resistant to temperatures.
Claims9
A polymeric composition resistant to temperatures comprising:
- a. Poly 2,5-Benzimidazole having inherent viscosity (I.V.) between 1.0 and 2.5;
- and
- b. at least one binder having a glass transition temperature less than the glass transition temperature of Poly 2,5-Benzimidazole and inherent viscosity ranging between 0.2 and 1.5,
- subjected to compression at-a temperature ranging between 400° C. and 600° C. and a pressure ranging between 1000 psi and 10000 psi,
- wherein said composition is characterized by:
- i. a glass transition temperature ranging between 150 and 480° C.;
- and
- ii. the ratio of Poly 2,5-Benzimidazole to the binder ranges between 95:5 and 5:95.
A process for preparing a polymeric composition resistant to temperatures comprising Poly 2,5-Benzimidazole and at least one binder;
- said process comprising the following steps:
- blending Poly 2,5-Benzimidazole and at least one binder to obtain a mixture;
- and
- molding said mixture by heating at a temperature ranging between 400° C. and 600° C. for a time period ranging between 0.5 hour and 4 hours at a pressure ranging between 1000 psi and 10000 psi followed by cooling to obtain a polymeric composition reistant to temperatures in the form of a shaped article selected from the group consisting of discs, chips, plates, tubes and rods,
- wherein said composition characterized in that the glass transition temperature ranging between 150 and 480° C.
Dependencies are inferred from the claim text.