The analysis shows that the main factor influencing the wrap single-rip tearing strengh of PU coated fabrics is warp strengh followed by pull-out force, weft density and warp density while the influence of wrap breaking elongation and other factors ar.

In order to fabricate rubber packing oil satisfied with some standards,extract oil,a byproduct during solvent refining of lubricating oil,was refined using N-methyl-2-pyrrolidone(NMP).

A rubber filling oil was prepared by extracting a extract oil using furfural as solvent, where the extract oil was from the equipment of refining lubricant oil by solvent.

The development and application of furfural extract oil produced by Ji'nan Refinery in rubber industry are mainly presented.

5 phr resorcinol,and with rapid accelerator NS,the scorch time and the cure time extended,the mo-dulus at 100% and 300% of vulcanizate increased slightly,the tear strength after heat aging test and the H pull out force increased greatly,and the pollution and toxicity of resorcinol were also avoided.

Non-Hydrogenation Refining of Coker Diesel(Ⅰ) : A Laboratory Study of Extraction by Furfural Refining Lubricating Oil as well as Additive;

The methods of studying the interfacial bonding behavior between aramid cord and rubber was intraduced, and the static bonding behavior in the aramid cord/rubber composite was actually studied and evaluated using H pull-out method.