A Novel Impact Modifier for Nylon 6

Abstract

A new carboxylated styrene‐butadiene rubber (CSBR) in ultrafine powder form was used to modify the properties of nylon 6. The nylon 6/CSBR blends possessed higher toughness than nylon 6/maleic anhydride‐grafted polyethylene‐octene elastomer (POE‐g‐MAH) system. TEM micrographs revealed the fine dispersion of CSBR particles with a diameter of 150 nm. The effective toughening of nylon 6 with CSBR was attributed to the good interface, fine dispersion, and shear yielding. TEM photograph of undeformed Nylon 6/CSBR (80/20) blend (×40 000).magnified imageTEM photograph of undeformed Nylon 6/CSBR (80/20) blend (×40 000).

Preparation of a structured acrylic impact modifier and its application in toughening polyamide 6

“…There are extensive technical literatures on rubber‐toughened PA 6. Various types of rubber have been used, including styrene‐ethylene/butylene‐styrene block copolymer (SEBS) and/or SEBS grafted with maleic anhydride (SEBS‐ g ‐MA) [1–3] (EPR) and/or (EPR‐ g ‐MA) [4–13], styrene‐acrylic acid copolymer [3], acrylonitrile‐butadiene‐styrene copolymer (ABS) [14, 15], polyethylene‐octene copolymer (EOR) and/or EOR grafted with maleic anhydride (EOR‐MA) [16, 17], epoxidized ethylene propylene diene rubber [18], ethylene propylene diene rubber grafted with maleic anhydride (EPDM‐ g ‐MA) [19, 20], EPDM grafted with styrene acrylonitrile copolymer [21], core‐shell impact modifier [22, 23], polyvinyl acetate blended with ethylene‐acrylic acid copolymer [24], ethylene‐acrylic acid copolymer [25], polybutadiene [26], natural rubber with maleic anhydride (NR‐ g ‐MA) [27], carboxylated styrene‐butadiene rubber [28], acrylonitrile‐butadiene copolymer [29], carboxylated nitrile rubber [30], ultra‐fine fully‐vulcanized acrylate powdered rubber [31], and carboxylic styrene‐butadiene ultra‐fine full‐vulcanized powdered rubber [32]. Effective toughening agents must be functionalized or polar rubbers because PA 6 is a polar material.…”

The morphology and property of ultra‐fine full‐vulcanized acrylonitrile butadiene rubber particles/EPDM blends

“…However, UFRP can hardly flow, owing to full vulcanization, and hence is only used as a kind of special filler. For example, UFRP is used as a toughening modifier by incorporating a small amount of UFRP into brittle resin, or to prepare thermoplastic elastomer (TPE) by blending a great amount of UFRP into thermoplastic resin 7–12. It was found that as toughening modifier, UFSBRP offered polypropylene (PP) balanced toughness, strength, and heat stability 7, 13.…”

Possible use of ultra‐fine acrylonitrile butadiene rubber powder as filler in natural rubber vulcanizates

“…Many types of UFRP, e.g., styrene butadiene rubber powder and acrylonitrile butadiene rubber powder (UFNBRP), are now commercially available. Possible applications of the UFRP include being a toughening or property modifier for plastics or being the major composition for thermoplastic elastomer preparation 9–14. Surprisingly, little attention is given to the application of UFRP as filler in rubber matrix.…”