Adhesion properties of the nanocomposites filled with aluminosilicates and factors affecting them: A review

Adhesion properties of the nanocomposites filled with aluminosilicates and factors affecting... Use of nanoclays for the adhesives enhancement is being considered in the review as well as adhesive properties of filled adhesives. Both structural and pressure-sensitive adhesives (PSAs) are discussed. Maximum adhesive properties are usually obtained when clay is exfoliated or at least intercalated, which is mostly achieved by using appropriate clay surface modifier, proper mixing techniques or both. In case of structural adhesives, overall improvement of cohesion strength and a decrease in the residual stresses in the system achieved in this case, are usually the main reasons for the adhesion strength growth at low clay content. Further clay addition causes appearance of defects and adhesion strength decrease, thus leading to the adhesion strength vs. modifier content dependencies with a maximum. An increase of 20–40% in lap shear or pull-out adhesion strength is often obtained at 1–2 wt% clay content. For PSAs shear resistance often increases notably with clays incorporation due to the increase in storage modulus (cohesive strength) of the systems, accompanied by a tack decrease because of the worsening in the conditions of adhesion joint formation. To obtain better compromise between tack and shear resistance a uniform clay distribution in the adhesive should be achieved, for this purpose in-situ polymerization techniques of clay incorporation and clay surface modification could be most helpful. Also, a trend to simultaneous increase in the shear and peel strength due to nanofillers incorporation could be observed for clay-filled PSAs. For non-crosslinked PSAs a structure with the elastic network formed by the polymer chains, adsorbed simultaneously at several nanoparticles seem to be most beneficial. An increase of PSA holding time up to 3–4 orders of magnitude could be obtained in this case, with simultaneous growth of peel strength at high clay content (30–40%). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Adhesion and Adhesives Elsevier

Adhesion properties of the nanocomposites filled with aluminosilicates and factors affecting them: A review

Loading next page...
 
/lp/elsevier/adhesion-properties-of-the-nanocomposites-filled-with-aluminosilicates-xWCiwAuD0v
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0143-7496
D.O.I.
10.1016/j.ijadhadh.2018.01.001
Publisher site
See Article on Publisher Site

Abstract

Use of nanoclays for the adhesives enhancement is being considered in the review as well as adhesive properties of filled adhesives. Both structural and pressure-sensitive adhesives (PSAs) are discussed. Maximum adhesive properties are usually obtained when clay is exfoliated or at least intercalated, which is mostly achieved by using appropriate clay surface modifier, proper mixing techniques or both. In case of structural adhesives, overall improvement of cohesion strength and a decrease in the residual stresses in the system achieved in this case, are usually the main reasons for the adhesion strength growth at low clay content. Further clay addition causes appearance of defects and adhesion strength decrease, thus leading to the adhesion strength vs. modifier content dependencies with a maximum. An increase of 20–40% in lap shear or pull-out adhesion strength is often obtained at 1–2 wt% clay content. For PSAs shear resistance often increases notably with clays incorporation due to the increase in storage modulus (cohesive strength) of the systems, accompanied by a tack decrease because of the worsening in the conditions of adhesion joint formation. To obtain better compromise between tack and shear resistance a uniform clay distribution in the adhesive should be achieved, for this purpose in-situ polymerization techniques of clay incorporation and clay surface modification could be most helpful. Also, a trend to simultaneous increase in the shear and peel strength due to nanofillers incorporation could be observed for clay-filled PSAs. For non-crosslinked PSAs a structure with the elastic network formed by the polymer chains, adsorbed simultaneously at several nanoparticles seem to be most beneficial. An increase of PSA holding time up to 3–4 orders of magnitude could be obtained in this case, with simultaneous growth of peel strength at high clay content (30–40%).

Journal

International Journal of Adhesion and AdhesivesElsevier

Published: Apr 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off