Two Component Room Temperature or Induction Curable Structural Adhesives for Automotive Applications

1995 ◽  
Author(s):  
John M. Baldwin ◽  
Virginia C. Marhevka ◽  
Kent S. Tarbutton ◽  
Elaine M. Yorkgitis
Keyword(s):  
Room Temperature ◽  
Automotive Applications ◽  
Structural Adhesives ◽  
Two Component

scholarly journals A Facile Co-crystallization Approach to Fabricate Two-component Carbon Dots Composites Showing Time-Dependent Evolutive Room Temperature Phosphorescence Colors

2021 ◽  
Author(s):  
Jian Qu ◽  
Xin Zhang ◽  
Zhong-Jie Wang ◽  
Shuyan Zhang ◽  
Yejian Yu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Data Encryption ◽  
Time Dependent ◽  
Security Level ◽  
Room Temperature Phosphorescence ◽  
Two Component ◽  
Carbon Based

Time-dependent evolutive afterglow materials can increase the security level by providing additional encryption modes in anti-counterfeiting and data encryption. The design of carbon-based materials with dynamic afterglow colors is attractive...

SELF-ORGANIZATION OF FULLERENE C60 MOLECULES IN VOLUME OF EVAPORATING DROPLETS

2018 ◽  
Vol 20 (5) ◽  
pp. 309-314
Author(s):  
U.K. Makhmanov ◽  
A.M. Kokhkharov ◽  
S.A. Bakhramov
Keyword(s):  
Room Temperature ◽  
Ostwald Ripening ◽  
Substrate Surface ◽  
Fullerene C60 ◽  
Chemical Mechanism ◽  
Self Organization ◽  
Flat Substrate ◽  
Large Structures ◽  
Physical Chemical ◽  
Two Component

An efficient method of formation of the ordered fullerene C60 nanoaggregates in the volume of evaporating fullerene droplets in mixtures of two-component solvents (benzene and acetonitrile) on a flat substrate surface at room temperature is demonstrated. The specific physical-chemical mechanism of the synthesis of fullerene C60 aggregates in the volume of the evaporating droplet of solution, so called Ostwald ripening, according to which relatively large structures grow at the expense of smaller ones, has been proposed.

Low Temperature Warm Forming of Magnesium ZEK 100 Sheets for Automotive Applications

2014 ◽  
Vol 783-786 ◽  
pp. 431-436 ◽  
Author(s):  
Xiao Ping Niu ◽  
Tim Skszek ◽  
Mark Fabischek ◽  
Alex Zak
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Process Parameters ◽  
Room Temperature ◽  
Warm Forming ◽  
Automotive Applications ◽  
Forming Process ◽  
Stamping Die ◽  
Automotive Parts ◽  
Volume Production

Cosma R&D investigated a low temperature warm forming process by which a magnesium ZEK 100 door inner part with a single-stage draw depth of 144 mm was successfully formed. The warm forming process is comprised of three steps: 1) heating pre-lubricated blanks in an oven at temperatures ranging from 215°C to 260 °C, 2) robotic transfer of the heated blank to a mechanical stamping press, 3) forming of the panel in room temperature stamping die at speed of about 160 mm/s. The effect of process parameters on the formability of the part, as well as, the post-forming properties including the mechanical properties, microstructure evolution and deformation thinning are also presented. The result indicates that Magnesium ZEK 100 exhibits superior low temperature warm formability over Magnesium AZ31B, and the developed warm forming process is promising and potential for volume production of magnesium automotive parts.

scholarly journals Low Viscosity Epoxy Structural Adhesive Cured at Room Temperature for Crack Repair of Subway Tunnel

2021 ◽  
Vol 2101 (1) ◽  
pp. 012047
Author(s):  
Ming Xiao ◽  
Xiaojiang Sun ◽  
Huaqing Rong ◽  
Shuguang Bi ◽  
Jiagong Tang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Poor Performance ◽  
Subway Tunnel ◽  
Adhesive Properties ◽  
Structural Adhesives ◽  
Low Viscosity ◽  
High Adhesion ◽  
Crack Repair ◽  
Amine Curing ◽  
Structural Adhesive

Abstract Epoxy structural adhesive has good mechanical properties, especially high adhesion, low shrinkage rate, and high stability, widely used in steel plate reinforcement, crack repair, bridge splicing, and concrete bonding, etc. However, due to the high cross-linking density and high internal stress after curing, its shortcomings, such as brittleness, the poor performance of fatigue resistance and heat resistance, limit its application in special track engineering. In this work, two kinds of epoxy structural adhesives (EPA-1, EPA-2) with low viscosity and room temperature curing were synthesized by selecting different bisphenol A epoxy resin and active diluent as component A and modified amine curing agent as component B. The results showed that EPA-1 and EPA-2 presented significant toughness compared with the classic construction adhesive (AralditeXH160). The yield strengths of EPA-1 and EPA-2 were 4.88 MPa and 13.13 MPa, and the shear strengths were 11.93 MPa and 13.08 MPa, respectively, showing good adhesive properties. In addition, the viscosities of EPA-1 and EPA-2 were 127 mPa·s and 308 mPa·s, respectively, and their decomposition temperatures were all above ∼280 °C, which indicated that the self-made epoxy structural adhesives could be used for the repair of cracks in the vibration subway tunnel.

Dispersion of Mechanical Properties at Nanoscale Studied by Indentation Mapping of a Fiber Reinforced Composite

2019 ◽  
Vol 809 ◽  
pp. 59-64
Author(s):  
Ude D. Hangen ◽  
Douglas Stauffer
Keyword(s):  
Room Temperature ◽  
Glass Fibers ◽  
Mean Value ◽  
Automotive Applications ◽  
Dynamic Indentation ◽  
Bright Field ◽  
Heating Chamber ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Simultaneous Variation

The properties of a resin transfer molded sheet of strand-reinforced composite for automotive applications are investigated at the microscopic level. Three components of the composite can be identified in the bright field micrograph – glass fibers, epoxy matrix and binder. The latter having been added in manufacturing process. Accelerated Nanoindentation with 64.451 single indentation experiments is performed at room temperature to generate a mechanical property map of an area containing the 3 components. The distribution of properties, mean value and standard deviation, is determined for each component. Two locations in the composite are selected for a study of the local glass transition behavior by performing dynamic indentation experiments while simultaneous variation of the temperature of the indenter tip and sample within a micro-heating chamber.

Selective shrinkage and separation of isomeric naphthoic acids via supramolecular gelation

2016 ◽  
Vol 52 (75) ◽  
pp. 11277-11280 ◽  
Author(s):  
Jie Chen ◽  
Tianyu Wang ◽  
Minghua Liu
Keyword(s):  
Room Temperature ◽  
Naphthoic Acid ◽  
Two Component ◽  
Supramolecular Gels

The isomeric non-gelator molecules 1- or 2-naphthoic acid (NA1, or NA2) were found to form two-component supramolecular gels with an amphiphilic gelator LHC18, and the NA2/LHC18 gel underwent shrinking at room temperature.

Re-Refinement of Composite Modulated Nb2Zr x−2O2x+1 (x = 8) Using Synchrotron Radiation Data

1997 ◽  
Vol 53 (6) ◽  
pp. 851-860 ◽  
Author(s):  
S. Schmid ◽  
J. G. Thompson ◽  
R. L. Withers ◽  
V. Petříček ◽  
N. Ishizawa ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Absorption Edge ◽  
Room Temperature ◽  
Group Symmetry ◽  
Modulated Structure ◽  
Space Group ◽  
Radiation Data ◽  
Two Component ◽  
Difference Fourier ◽  
Thick Layers

The crystal structure of Nb2Zr_{x-2}O_{2x + 1}, x = 8, has been re-refined as a composite modulated structure using synchrotron radiation data measured at energies below the Zr K absorption edge. The structure comprises one-atom thick layers of two substructures stacked alternately along the b direction. The two component substructures are, in general, mutually incommensurable along their common a-axis directions and are referred to as the metal substructure (M), space group Amma, aM = 5.1348 (2), bM = 4.9590 (2), cM = 5.2908 (3) Å, and the oxygen substructure (O), space group Imam, aO = 2.4164, bO = bM = b, cO = cM = c, respectively. The four basis vectors used to index reciprocal space, based on the more strongly scattering metal substructure, are a^{\ast}_{M}, b*, c* and q M . The primary modulation wavevector q M = ^{\ast}_{M} − 2a^{\ast}_{M} + b* - 1/8 a^{\ast}_{M} + b* for x = 8. The overall superspace-group symmetry is Amma(\alpha10)0s0. Two sets of intensity data recorded at room temperature, 8 eV (\lambda_n = 0.6892 Å) and 1450 eV (\lambda_f = 0.7492 Å) below the Zr K absorption edge, were refined to an overall R(\lambda_n) = 0.0377 and R(\lambda_f) = 0.0439. The displacive modulation wave amplitudes obtained from these refinements agree well with those previously obtained for an x = 12 member. Difference Fourier maps show that metal-atom ordering is virtually negligible.

Flexible and highly transparent two-component organogels with enhanced viscoelasticity for self-healing materials and room-temperature phase-selective gelation

2016 ◽  
Vol 52 (97) ◽  
pp. 13975-13978 ◽  
Author(s):  
Jiahui Liu ◽  
Jingjing Li ◽  
Peng Lin ◽  
Nanxiang Zhang ◽  
Xiaoyu Han ◽  
...  
Keyword(s):  
Room Temperature ◽  
Temperature Phase ◽  
Self Healing ◽  
Two Component

Flexible and highly transparent two-component organogels with enhanced viscoelasticity showed excellent multi-functions.

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