Fiber forming polyacrylonitriles (PAN) were modified by copolymerizing acrylonitrile monomer with methyl acrylate (MA) and 2-acrylamido-2-methyl propane sulfonic acid (AP), respectively, and blended with collulose acetate (CA). Fibers of MA-PAN, AP-PAN, and their blends with CA were wet-spun in dime
Properties of rubber-modified cellulose-fiber-epoxy laminates
โ Scribed by I. M. Low; P. Schmidt; J. Lane; M. McGrath
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 272 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
โฆ Synopsis
Properties of Rubber-Modified Cellulose-Fiber-Epoxy laminates
Cellulose fibers are a potential source of cheap reinforcement for brittle materials. Already they are used commercially to improve the strength and fracture toughness of cements.'s2 These materials also displayed a slow crack growth resistance curve. Cellulose fibers are also widely used in the strengthening and toughening of polymers. Cellulose-fiber-reinforced polymer composites (CPC) can replace metals in many applications. They offer superior corrosion resistance, lower costs, lighter weight, good fracture resistance, and better flexibility in part design. Two most widely used methods for fabricating CPC materials are: (a) impregnation of wood with liquid monom e r ~, ~. ~ and (b) compounding of polymer with cellulose fiber^.^,^ Improved physical mechanical properties have been achieved for these materials.
Recently, we successfully synthesized cellulose-fiberepoxy laminates with improved mechanical and fracture proper tie^.^
๐ SIMILAR VOLUMES
Two sets (A and B) of bisphenol Aยฑdiglycidyl ether (DGEBA) based epoxy resin formulations were modiยฎed with epoxidized natural rubber (ENR 50) and its liquid version (LENR 50), and cured with amino propoxylate initiator/accelerator at ambient temperatures. The ENR 50 loading range was 1.6ยฑ5.9 wt%. B