Preparation and properties of monomer casting nylon-6/PEO blend prepared via in situ polymerization

2014 ◽  
Vol 55 (3) ◽  
pp. 589-597 ◽  
Author(s):  
Sheng Xu ◽  
Lin Ye
Keyword(s):  
In Situ Polymerization ◽  
Nylon 6

scholarly journals Morphology and crystallization kinetics of Rubber-modified Nylon 6 Prepared by Anionic In-situ Polymerization

2020 ◽  
Vol 27 (1) ◽  
pp. 204-215
Author(s):  
Hongkai Zhao ◽  
Dengchao Zhang ◽  
Yingshuang Li
Keyword(s):  
Crystallization Kinetics ◽  
In Situ Polymerization ◽  
Good Description ◽  
Nylon 6 ◽  
Avrami Equation ◽  
Infrared Analysis ◽  
Chain Segment ◽  
The Impact ◽  
Kinetics Of

AbstractIn this work, we modified nylon 6 with liquid rubber by in-situ polymerization. The infrared analysis suggested that HDI urea diketone is successfully blocked by caprolactam after grafting on hydroxyl of HTPB, and the rubber-modified nylon copolymer is generated by the anionic polymerization. The impact section analysis indicated the rubber-modified nylon 6 resin exhibited an alpha crystal form.With an increase in the rubber content, nylon 6 was more likely to generate stable α crystal. Avrami equation was a good description of the non-isothermal crystallization kinetics of nylon-6 and rubber-modified nylon-6 resin. Moreover, it is found that the initial crystallization temperature of nylon-6 chain segment decreased due to the flexible rubber chain segment. n value of rubber-modified nylon-6 indicated that its growth was the coexistence of two-dimensional discoid and three-dimensional spherulite growth. Finally, the addition of the rubber accelerated the crystallization rate of nylon 6.

Research on Performance of Polyimide In Situ Modification Anionic Polymerization Nylon 6

2014 ◽  
Vol 1052 ◽  
pp. 242-248
Author(s):  
Hong Kai Zhao ◽  
Hong Li Wang
Keyword(s):  
Bisphenol A ◽  
Water Absorption ◽  
In Situ Polymerization ◽  
Microscopic Analysis ◽  
Nylon 6 ◽  
Grafting Reaction ◽  
Lamellar Crystals ◽  
End Capping ◽  
Short Time

Through the polymerization and grafting reaction of bisphenol A dianhydride and bisphenol A diamine, the polyimide activator (PI activator) of acyl caprolactam end capping is obtained and then the anionic in-situ polymerization modified nylon 6 resin is obtained. Viscosity analysis shows that PI consumption is higher than 0.1 (of monomer mass), the reaction temperature is higher than 160°C, the viscosity rises rapidly in a short time and the rapid polymerization molding can be realized; when PI consumption is higher than 0.15 (of monomer mass), the water absorption of matrix resin will be lower than 1.4%; compared with the nylon resin, its water absorption is significantly lowered and its mechanical property is improved greatly; microscopic analysis shows that PI molecules fail to enter the crystalline phase of the nylon 6 and form lamellar crystals in the nylon matrix, which plays a role of enhancement and obstruction; differential thermal analysis shows that PI reduces the melting enthalpy and melting point temperature of nylon 6 resin, which indicates that PI reduces the crystallization capacity of nylon 6.

Nylon 6/Graphite Fiber Composites by in Situ Polymerization

1973 ◽  
Vol 5 (3) ◽  
pp. 153-160 ◽  
Author(s):  
Morton H. Litt ◽  
Allan W. Brinkmann
Keyword(s):  
In Situ Polymerization ◽  
Nylon 6 ◽  
Fiber Composites ◽  
Graphite Fiber

Preparation and properties of nylon 6/sulfonated graphene composites by an in situ polymerization process

RSC Advances ◽  
2016 ◽  
Vol 6 (51) ◽  
pp. 45014-45022 ◽  
Author(s):  
Chunhua Wang ◽  
Feng Hu ◽  
Kejian Yang ◽  
Tianhui Hu ◽  
Wenzhi Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
In Situ Polymerization ◽  
Nylon 6 ◽  
High Thermal Conductivity ◽  
Polymerization Process ◽  
Sulfonated Graphene

Nylon 6/sulfonated graphene composites with high thermal conductivity, good mechanical properties and excellent processability were prepared using sulfonated graphene as a precursor by an in situ polymerization process.

Covalent grafting of unfunctionalized pristine MWCNT with Nylon-6 by microwave assist in-situ polymerization

Polymer ◽  
2019 ◽  
Vol 185 ◽  
pp. 121946 ◽  
Author(s):  
Roberto Yañez-Macias ◽  
Ernesto Hernandez-Hernandez ◽  
Carlos A. Gallardo-Vega ◽  
Raquel Ledezma-Rodríguez ◽  
Ronald F. Ziolo ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Nylon 6 ◽  
Covalent Grafting
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