Standard Test Method for
Plastic-Coated Fabrics—Completeness of Fusion of PVC
Dispersion Coatings1
This standard is issued under the fixed designation D 4005; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This method describes a simple procedure to determine
the completeness of fusion of poly(vinyl chloride) (PVC)
dispersion coatings on the fabric. This test applies primarily to
coatings with a mechanical bond and does not include tie
coating.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Summary of Test Method
2.1 Specimens of the PVC-coated fabric are examined for
surface cracks or breaks, followed by immersion in acetone.
The subsequent appearance of additional cracking indicates that
fusion is incomplete.
3. Significance and Use
3.1 Poly(vinyl chloride) (PVC) is applied to coated fabrics
as a dispersion of PVC particles in a liquid vehicle. During the
processing of the fabric, the PVC is fused or melted to produce
a uniform film on the fabric. This test measures whether the
PVC is converted, fused, or melted to produce a homogeneous
film.
3.2 This conversion process is a melting of the crystallite
structures in the polymer particles followed by a solution of the
molten polymer in the plasticizing vehicle. Fusion is important
in the production of PVC-coated fabrics.
4. Apparatus and Reagents
4.1 Glass Beaker, 500-mL.
4.2 Acetone.
Click below to download Astm D 4005 – 92 (Reapproved 2001) pdf free
