High temperature cabonaceous cement

Details High temperature cabonaceous cement High temperature cabonaceous cement

C - Chemistry, Metallurgy

09

J

C09J 177/10 (2006.01) C04B 14/02 (2006.01) C04B 26/20 (2006.01) C09J 5/02 (2006.01) C09J 11/04 (2006.01)

Patent

CA 2343553

A curable, high temperature, carbonaceous, cement paste composition comprising a catalyst; a carbon filler present in an amount of about 20 to about 60 wt. %; a polymerizable monomeric system present in an amount of about 7 to about 30 wt. % comprising a dialkyl ester of an aromatic tetracarboxylic acid, an aromatic diamine, and a monoalkyl ester of an acid selected from the group consisting of 5-norbornene-2,3-dicarboxylic acid and phthalic acid; and a furan solvent present in an amount of about 20 to about 60 wt. %. The most preferred embodiment comprising a monomeric system comprising a dimethyl ester of 3,3',4,4'-benzophenonetetracarboxylic acid, 2,2'-bis (4-[4- aminophenoxyl]phenyl)propane and a monomethyl ester of 5-norbornene-2,3-dicarboxylic acid with furfuryl alcohol and a catalytic solution of about 50% ZnCl2, has a glass transition temperature of about 280°C after curing by heating at about 2°C/minute to about 240°C and holding for about 2 hours. Upon curing, the cement paste composition maintains a strength of at least about 2000 psi at room temperature after heat treatment at about 3000°C even when cured at a substantially lower temperature of at least about 200°C. Subsequent heating of the monomeric binder causes further cross- linking producing a stronger and more stable cement for use at service temperatures greater than the initial glass transition temperature of the cured cement. The curable cement composition may be used along with a pre-coat in an adhesive system for attaching together carbon bodies. Most preferably, the pre-coat comprises about 27 wt. %, of a monomeric system comprising a dimethyl ester of 3,3',4,4'-benzophenonetetracarboxylic acid, 2,2'-bis (4-[4- aminophenoxyl]phenyl)propane and a monomethyl ester of 5-norbornene-2,3-dicarboxylic acid dissolved in about 65 to about 85 wt. % furfuryl alcohol. A method of making the cement paste composition is also described.

Affiliated with

Also associated with

Rating

High temperature cabonaceous cement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High temperature cabonaceous cement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High temperature cabonaceous cement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1973852