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INTEREST EXPLORATION NOTE

Benzoxazine Polymer

Indian Space Research Organisation at its Vikram Sarabhai Space Centre has developed Benzoxazine Polymer, a matrix resin suitable for thermal insulations, adhesive formulations and encapsulant in PCB industry.

Polybenzoxazine is a suitable candidate matrix resin for high density ablative composites and also for light weight foam composites in aerospace applications due to excellent thermal and thermo-oxidative stability, high char yield, good chemical inertness, abrasion resistance and flame retardancy. It also finds application as an encapsulant in electronic industry.

Salient features

• Excellent flame retardancy

• Easily processable (solventless process, moderate temperature)

• Good thermal stability

Raw materials

Bisphenol A, Aniline and Para-   Formaldehyde

Method

Solventless process

Reaction temperature:

120 °C

Product appearance

Yellowish orange powder

Solubility

Soluble in acetone, chloroform etc

Curing temperature:

210 °C/3 hrs

Polymerization temperature (°C)

200/ 2 hours

Thermal stability

>250 °C.

Shelf life

1 year

Storage

Ambient temperature, moisture-free environment

Approximate Production cost

Rs.1000/kg

TECHNOLOGY TRANSFER FROM ISRO

ISRO is willing to offer the knowhow of this technology to suitable entrepreneurs /industries in India. Capable manufacturing industries interested in acquiring this knowhow may write with details of their present activities, requirements and plans for implementation, infrastructure and technical expertise available with them, their own market assessment, if any, and plans for diversification to the address given below.

For further details, please contact:

Head

Technology Transfer & Industrial Coordination Division (TT&IC)

Vikram Sarabhai Space Centre, ISRO PO

Thiruvananthapuram-695 022

E mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Ph: 0471-2565133/5695

Fax: 0471-2564134