CTA Ltd.

Leeds, United Kingdom
Leeds, United Kingdom
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Ferreira J.A.M.,University of Coimbra | Reis P.N.B.,CCTA | Costa J.D.M.,University of Coimbra | Richardson B.C.H.,CTA Ltd. | Richardson M.O.W.,CTA Ltd.
Composites Part B: Engineering | Year: 2011

This paper presents the results of a current study concerned with the mechanical properties of a polypropylene binder resin, enhanced by nanoclay filler. The study was centred on the potential benefits obtained by the addition of specially surface treated nanoclays on the stiffness, toughness and also on static and fatigue strength. Specimens were produced by an injection moulding process with 3% in weight of nanoclay. Surface treatment of the nanoclay promotes a tendency to increase stiffness and tensile strength in comparison with composites filled by both commercial nanoclay and unfilled material. Nanoclay filling significantly improves absorbed impact energy in comparison with unfilled materials, but in contrast Gc values are significantly lower as consequence of the material embrittlement. Fatigue analysis shows that the materials tested in the present work exhibit high strain accumulation and stress release. Filled material show lower fatigue performance than unfilled polymer. However, surface treatment used on B3 composite promotes better clay dispersion and smaller particle size leading to a fatigue performance close to matrix polymer. © 2011 Elsevier Ltd. All rights reserved.


Trademark
CTA Inc. | Date: 2013-03-11

Childrens activity books, printed game books and educational publications, namely, learning cards, flash cards, activity cards, workbooks, printed bookmarks all in the field of religion and education about religious history and religious beliefs.


Trademark
C. T. A. Co. | Date: 2013-10-15

Sweaters.


Trademark
CTA Inc. | Date: 2015-06-19

Publications, namely: note cards, greeting cards, scripture cards, prayer cards, gift cards, pictures, book marks and stationary in the field of religion; printed teaching materials in the field of religion.


Trademark
CTA Inc. | Date: 2016-04-20

Gift items and printed materials having religious themes, namely, books, prayer journals, bookmarks, scripture cards, prayer cards, devotional books, pens, notepads, folders, stickers, flip books, gift cards, printed cards for displaying jewelry, printed gift boxes, gift sets which comprise a combination of the books, prayer journals, bookmarks, scripture cards, prayer cards, devotional books, pens, notepads offered as a group of products and activity sets which comprise a combination of pens, notepads, folders, stickers, and flip books offered as a group of products.


Trademark
CTA Inc. | Date: 2016-06-14

Gift items, printed awards and printed materials having religious themes, namely, books, prayer journals, bookmarks, scripture cards, prayer cards, devotional books, pens, notepads, folders, stickers, flip books, gift cards, printed cards for displaying jewelry, printed gift boxes, gift sets which comprise a combination of the books, prayer journals, bookmarks, scripture cards, prayer cards, devotional books, pens, notepads offered as a group of products and activity sets which comprise a combination of pens, notepads, folders, stickers, and flip books offered as a group of products.


Trademark
C. T. A. Co. | Date: 2016-08-18

Sweaters; knit tops.

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