ASTM D8160-20

Standard Test Method for Un-notched Cantilever Beam Impact Resistance (Izod Impact) Testing of Thermoplastic Pavement Marking Materials

SIGNIFICANCE AND USE
5.1 The significance of this test is to determine the thermoplastic pavement marking material’s resistance to impact, under laboratory conditions. The method provides a numerical result for impact failure which can be used to assess quality and determine relative performance between materials.  
5.2 When the pendulum-impact test is performed on thermoplastic pavement marking materials, the results can indicate the strength and brittleness properties helpful in researching and improving their field durability. Anyone attempting to perform this test should initially review Test Methods D256 and Test Method D4812; especially the equipment setup.  
5.3 The following sample preparation and testing setup method is important so inconsistencies in sample preparation do not cause more inconsistency in the results that are inherent when testing thermoplastic pavement marking materials.
SCOPE
1.1 This test method covers the sample preparation for cantilever beams and test methodology of thermoplastic pavement marking materials, similar to the “Izod Impact” method listed in Test Method D4812.  
1.1.1 Some methods call for results in inch pound-force (in.·lbf) as opposed to the common foot pound-force/inch (ft·lbf/in.) or Joule/meter (J/m) (energy absorbed per unit of specimen of similar cross-section). This method does not purport to cover all the issues involved with the pendulum impact of cantilever beams and suggests that Test Method D4812 and Test Methods D256 be reviewed before this methodology is attempted.  
1.1.2 Thermoplastic pavement marking materials are a highly filled polymer matrix. Depending on the formula the resulting matrix may be brittle, therefore possibly resulting in inconsistent test results.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-May-2020
• ICS: 83.140.99 - Other rubber and plastics products
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.44 - Traffic Coatings

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8160 − 20
Standard Test Method for
Un-notched Cantilever Beam Impact Resistance (Izod
Impact) Testing of Thermoplastic Pavement Marking
1
Materials
This standard is issued under the fixed designation D8160; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the sample preparation for
D256Test Methods for Determining the Izod Pendulum
cantilever beams and test methodology of thermoplastic pave-
Impact Resistance of Plastics
ment marking materials, similar to the “Izod Impact” method
D883Terminology Relating to Plastics
listed in Test Method D4812.
D4812Test Method for Unnotched Cantilever Beam Impact
1.1.1 Some methods call for results in inch pound-force
Resistance of Plastics
(in.·lbf) as opposed to the common foot pound-force/inch
D7307PracticeforSamplingofThermoplasticTrafficMark-
(ft·lbf/in.) or Joule/meter (J/m) (energy absorbed per unit of
ing Materials
specimen of similar cross-section). This method does not
D7308Practice for Sample Preparation of Thermoplastic
purport to cover all the issues involved with the pendulum
Pavement Marking Materials
impact of cantilever beams and suggests that Test Method
E177Practice for Use of the Terms Precision and Bias in
D4812 and Test Methods D256 be reviewed before this
ASTM Test Methods
methodology is attempted.
E284Terminology of Appearance
1.1.2 Thermoplastic pavement marking materials are a
E691Practice for Conducting an Interlaboratory Study to
highly filled polymer matrix. Depending on the formula the Determine the Precision of a Test Method
3
resulting matrix may be brittle, therefore possibly resulting in
2.2 ISO Standard:
inconsistent test results. ISO 180:2019Plastics — Determination of Izod impact
strength
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
3. Terminology
conversions to SI units that are provided for information only
3.1 The terms and definitions in Terminology D883 and
and are not considered standard.
Terminology E284 apply to this method.
1.3 This standard does not purport to address all of the
3.2 Definitions of Terms Specific to This Standard:
safety concerns, if any, associated with its use. It is the
3.2.1 impact tester, n—“standardized” (see Test Methods
responsibility of the user of this standard to establish appro-
D256) pendulum-type hammers, mounted in “standardized”
priate safety, health, and environmental practices and deter-
machines, in breaking standard specimens with one pendulum
mine the applicability of regulatory limitations prior to use.
swing.
1.4 This international standard was developed in accor-
3.2.2 thermoplastic pavement marking (materials), n—a
dance with internationally recognized principles on standard-
highly filled 100% total solids pavement marking system that
ization established in the Decision on Principles for the
when heated to the manufacturer’s recommended temperature
Development of International Standards, Guides and Recom-
under agitation can be applied onto a pavement surface and
mendations issued by the World Trade Organization Technical
when cooled forms a solid durable delineator or marking.
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint Standards volume information, refer to the standard’s Document Summary page on
and Related Coatings, Materials, andApplications and is the direct responsibility of the ASTM website.
3
Subcommittee D01.44 on Traffic Coatings. Available from International Organization for Standardization (ISO), ISO
Current edition approved June 1, 2020. Published June 2020. DOI: 10.1520/ Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
D8160-20. Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8160 − 20
4. Summary of Test Method 5.3 The following sample preparation and testing setup
method is important so inconsistencies in sample preparation
4.1 This test method is similar to Test Method D4812, but
do not cause more inconsistency in the results that are inh
...