Interface adhesion properties of syndiotactic polypropylene/cellulose group composite: Relationship between chemical structure of coupling agent and reactivity for cellulose group

2011 ◽  
Vol 122 (4) ◽  
pp. 2798-2806 ◽  
Author(s):  
Hisayuki Nakatani ◽  
Keisuke Iwakura ◽  
Masato Hamadate ◽  
Noriyasu Okazaki ◽  
Masakazu Aoyama ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Chemical Structure ◽  
Interface Adhesion ◽  
Syndiotactic Polypropylene ◽  
Adhesion Properties

scholarly journals Effect of Silane Coupling Agent on Thermal Stability and Adhesion Properties of DGEBF Epoxy Resin

Polymer Korea ◽  
2014 ◽  
Vol 38 (6) ◽  
pp. 787-790
Author(s):  
Dong Su Lee ◽  
Seul-Yi Lee ◽  
Byung-Gak Min ◽  
Young Soo Seo ◽  
Bong Han Lee ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Epoxy Resin ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Adhesion Properties ◽  
Silane Coupling

Investigation of Effect of Additives on Adhesive Properties of Silicone Rubbers Sealant

2009 ◽  
Vol 417-418 ◽  
pp. 437-440
Author(s):  
Jie Sheng Liu ◽  
Shao Peng Wu ◽  
Yi Xuan Mi
Keyword(s):  
Adhesion Strength ◽  
Silicone Rubber ◽  
Coupling Agent ◽  
Adhesion Property ◽  
Coupling Agents ◽  
Adhesive Properties ◽  
Adhesion Properties ◽  
Effect Of Additives ◽  
Single Coupling ◽  
Silicone Rubbers

Additives are always added into silicone rubber to improve properties. As a sealant, it is well known that the adhesion property is a key aspect of the sealant system. The effect of additives on the adhesion properties of silicone rubber sealant are discussed in this study. The results showed that the adhesive properties of samples with single coupling agent are lower than that with multiple coupling agents. The adhesive properties of sample first increase with increasing amount of coupling agent and then decrease linearly. The adhesion strength of SR sealant decreased with the amount of the plasticizer and filler added into the silicone rubber has little influence on the adhesion strength of silicone rubber.

Research on the Properties of Nanoparticles Modified Sodium Silicate Adhesive

2012 ◽  
Vol 557-559 ◽  
pp. 1825-1829 ◽  
Author(s):  
Xin Li Zhang ◽  
Yi Qiang Wu ◽  
Yun Chu Hu
Keyword(s):  
Bonding Strength ◽  
Chemical Structure ◽  
Performance Standards ◽  
Nano Silica ◽  
Thermo Gravimetric ◽  
Adhesion Properties ◽  
Good Thermal Stability ◽  
Thermo Gravimetric Analyzer ◽  
Structure Surface ◽  
Infrared Spectrometer

A kind of nanoparticles modified Na2SiO3 adhesive was prepared from Na2SiO3 aqueous solution with nano-silica and nano-magnesia as curing agent, and nano attapulgite as skeleton material. The chemical structure, surface morphology and thermal properties of nanoparticles modified Na2SiO3 adhesive were characterized by Fourier transform infrared spectrometer, scanning electron microscope, and thermo-gravimetric analyzer. As the two main measures of adhesion properties, the bonding strength and water resistance were also determined. The results showed that nanoparticles uniformly dispersed in Na2SiO3 matrix in the state of grain, so the homogenous morphology of cured adhesive was formed and bonding strength of Na2SiO3 adhesive was improved. Nanoparticles modified Na2SiO3 adhesive have good thermal stability in the range of 30~800 °C. The bonding strength and 24h water absorption rate of poplar plywood glued by the nanoparticles modified Na2SiO3 adhesive is 0.8 MPa and 23.7%, respectively, reaching the type-two plywood performance standards.

scholarly journals Free Volume Effect via Various Chemical Structured Monomers on Adhesion Property and Relative Permittivity in Acrylic Pressure Sensitive Adhesives

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2633
Author(s):  
Jung-Hun Lee ◽  
Ji-Soo Kim ◽  
Hyun-Joong Kim ◽  
Kyujong Park ◽  
Jungwoo Moon ◽  
...  
Keyword(s):  
Butyl Acrylate ◽  
Relative Permittivity ◽  
Chemical Structure ◽  
Volume Effect ◽  
The Other ◽  
Smart Devices ◽  
Adhesion Properties ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Gel Fraction

Acrylic pressure-sensitive adhesives (PSAs) are used as fixatives between layers of a display. PSAs’ function is an important factor that determines the performance of the display. Of the various display types available, the touch screen panel (TSP) of smart devices is firmly related to the relative permittivity of the elementals. Therefore, adjusting the relative permittivity of the PSA is indispensable for driving the TSP. Accordingly, selected acrylic pre-polymers were polymerized and the pre-polymer was blended and cross-linked with monomers with different chemical structure to adjust the relative permittivity. The monomers were hexametyldisiloxane (HMDS), N-vinylcaprolactam (NVC), tert-butyl acrylate (TBA), and isooctadecyl acrylate (ISTA). The gel fraction and transmittance as a function of the monomers show a similar result to the pure acrylic PSA. However, the gel fraction value decreased to about 90% and the transmittance decreased to about 85%, due to the immiscibility between nonpolar HMDS and acrylic PSA. On the other hand, the adhesion properties were improved when NVC was added because of the polarity of the nitrogen group. In addition, the relative permittivity of the PSA decreased regardless of the monomer chosen. There was, however, a difference in the optimal content of each monomer, and NVC decreased from 4 phr content to about 3.4 in reducing relative permittivity. Through the above results, it was confirmed that NVC having a nitrogen group is most advantageous in lowering adhesion properties and relative permittivity, and necessitates further research based on the findings.

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