UV Curable, Flame Retardant, and Pressure-Sensitive Adhesives with Two-Way Shape Memory Effect

2021 ◽  
Author(s):  
Xiaming Feng ◽  
Guoqiang Li
Keyword(s):  
Shape Memory ◽  
Flame Retardant ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Uv Curable ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive

scholarly journals An Intelligent Fire-Protection Coating Based on Ammonium Polyphosphate/Epoxy Composites and Laser-Induced Graphene

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 984
Author(s):  
Weiwei Yang ◽  
Ying Liu ◽  
Jie Wei ◽  
Xueli Li ◽  
Nianhua Li ◽  
...  
Keyword(s):  
Shape Memory ◽  
Flame Retardant ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Fire Protection ◽  
Temperature Sensor ◽  
Ammonium Polyphosphate ◽  
Photothermal Effect ◽  
Laser Scribing ◽  
Protection Coating

Fire-protection coatings with a self-monitoring ability play a critical role in safety and security. An intelligent fire-protection coating can protect humans from personal and property damage. In this work, we report the fabrication of a low-cost and facile intelligent fire coating based on a composite of ammonium polyphosphate and epoxy (APP/EP). The composite was processed using laser scribing, which led to a laser-induced graphene (LIG) layer on the APP/EP surface via a photothermal effect. The C–O, C=O, P–O, and N−C bonds in the flame-retardant APP/EP composite were broken during the laser scribing, while the remaining carbon atoms recombined to generate the graphene layer. A proof-of-concept was achieved by demonstrating the use of LIG in supercapacitors, as a temperature sensor, and as a hazard detection device based on the shape memory effect of the APP/EP composite. The intelligent flame protection coating had a high flame retardancy, which increased the time to ignition (TTI) from 21 s to 57 s, and the limiting oxygen index (LOI) value increased to 37%. The total amount of heat and smoke released during combustion was effectively suppressed by ≈ 71.1% and ≈ 74.1%, respectively. The maximum mass-specific supercapacitance could reach 245.6 F·g−1. The additional LIG layer enables applications of the device as a LIG-APP/EP temperature sensor and allows for monitoring of the deformation according to its shape memory effect. The direct laser scribing of graphene from APP/EP in an air atmosphere provides a convenient and practical approach for the fabrication of flame-retardant electronics.

Tensile Failure of 55-Nitinol Wire

1975 ◽  
Vol 33 ◽  
pp. 46-47
Author(s):  
F. I. Grace
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Stoichiometric Composition ◽  
Tensile Failure ◽  
Initial State ◽  
Initial Shape ◽  
Nitinol Wire ◽  
Cscl Type ◽  
Shear Transformation

An interest in NiTi alloys with near stoichiometric composition (55 NiTi) has intensified since they were found to exhibit a unique mechanical shape memory effect at the Naval Ordnance Laboratory some twelve years ago (thus refered to as NITINOL alloys). Since then, the microstructural mechanisms associated with the shape memory effect have been investigated and several interesting engineering applications have appeared.The shape memory effect implies that the alloy deformed from an initial shape will spontaneously return to that initial state upon heating. This behavior is reported to be related to a diffusionless shear transformation which takes place between similar but slightly different CsCl type structures.

A new type of intrinsic two-way shape-memory effect in hooks of NiTi-wires

2003 ◽  
Vol 112 ◽  
pp. 1177-1180 ◽  
Author(s):  
A. Schuster ◽  
H. F. Voggenreiter ◽  
D. C. Dunand ◽  
G. Eggeler
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
New Type ◽  
Niti Wires

Experimental study of the out-of-equilibrium behavior of the two-way shape memory effect

2003 ◽  
Vol 112 ◽  
pp. 765-768 ◽  
Author(s):  
Y. Bellouard ◽  
R. Clavel ◽  
R. Gotthardt ◽  
J. van Humbeeck
Keyword(s):  
Experimental Study ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Equilibrium Behavior

scholarly journals Using shape memory effect to obtain a new polymer for the manufacture of complete dentures

2019 ◽  
Vol 572 ◽  
pp. 012014
Author(s):  
M Bolat ◽  
A Ciocan-Pendefunda ◽  
Z Surlari ◽  
C Bida ◽  
C Balcos ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Complete Dentures
Sign in / Sign up

Export Citation Format

Share Document