ASTM D2842 Standard Test Method for Water Absorption of Rigid Cellular Plastics
The ASTM D 2842 standard presents an accurate and reproducible technique for determining the water absorption properties of rigid cellular plastics. The test is essential in the determination of the effectiveness of these materials in resisting the uptake of water under controlled conditions. The method assesses post-immersion performance, providing information on product durability, quality, and behavior in humid or flooded conditions. Knowledge of water absorption will guide manufacturers to use insulation, construction, and marine standards within the product.
Read More
GET STARTED
ASTM D2842 Introduction
ASTM D2842 is one of the important quality control and design assessment tools in the world of polymers. Cellular foams (e.g, polyurethane, polystyrene, polyisocyanurate foams) are also very common as rigid cellular plastics that offer lightweight insulation. But they can perform poorly if moisture penetration is high. This standard measures the proportion of water that is absorbed in case the specimen is immersed within the given period of time in the standard temperature and pressure conditions. The findings can be used to steer manufacturers and engineers towards maximizing formulations and structures so as to make them resistant to damage, moisture, and long-term stability in harsh conditions.
ASTM D2842 Test Method
Immersion Conditions
Specimens are immersed in distilled water at 23 +/-2 °C under 96 +/-2 hours full contact with the surface.
Procedure of measurement
The initial dry mass is measured, the sample is immersed, and the sample’s dry mass is determined. Water absorption depends on the percentage of increase in the mass.
Calculation Formula
Water absorption (%) = (Wet mass – Dry mass)/ Dry mass) x 100, which is an expression of the amount of water taken up by the specimen.
ASTM D2842 Equipment and Sample Preparation
Test Apparatus
An analytical balance of 0.001 g accuracy, a distilled water bath, and a temperature control unit of 23 °C.
Preparation of Specimen
Preparation of the specimen should be done neatly and to a uniform size; this should be done without having any commonalities with the surface or air bubbles. The surface should be smooth and devoid of any contaminants.
Specimen Dimension
Usually 75 mm 75 mm 25 mm (3 x 3 x 1 inches) or similar, according to the type of foam; uniformity of the thickness is necessary to ensure reproducibility.
ASTM D2842 Test Results and Interpretation
The findings are presented as the percentage of water absorbed in reference to the original dry weight of the specimen. Lower values of absorption are a sign of high resistance to the ingress of water, whereas higher percentages are a sign of possible weaknesses or porosity of the surface. This data is used in categorizing materials to be used in dissimilar exposure settings and service duration requirements.
Service Name
Remarks
ASTM D2842 Testing
Contact US
ASTM D2842 Related Articles
ASTM D1622 is the specification of the apparent density of rigid cellular plastics, and ASTM D6226 is the specification of the open cell content of rigid cellular plastics by air pycnometer.
Materials Commonly Tested with ASTM D2842
Common materials, which are tested by ASTM D2842, are rigid polyurethane foams, expanded and extruded polystyrene, phenolic foams, and polyisocyanurate insulation materials.
Applications of ASTM D2842 in Industry
The technique is frequently applied in the certification of insulation materials, packaging assessment, and in the layout of marine foams with the intention of providing long-term dependability and size stability in wet conditions.
Safety and Best Practices in ASTM D2842
Protective gloves and eyewear should be used by the operators when working with samples and hot water baths. Measurement errors are reduced by maintenance of the correct temperature and handling of the specimen, thus providing reproducible results.
Importance of ASTM D2842
ASTM D2842 guarantees the reliability of the material in cases when moisture resistance is essential, product development, regulation, and performance verification. Its adoption assists manufacturers in ensuring uniformity, efficacy, and dependability of consumers in various industrial uses.
Related
FAQ's
Where can I get the astm d2842 tested?
You can share your astm d2842 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d2842 test to various testing techniques.
How much do I need to pay for the astm d2842 test?
Please contact us for a detailed quote for your astm d2842 testing needs. Cost incurred to carry out different astm d2842 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm d2842?
The required number of samples or specimens should comply with the procedure given in the astm d2842 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm d2842 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm d2842 test?
The turnaround time for astm d2842 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
Where can I get the astm d2842 tested?
You can share your astm d2842 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d2842 test to various testing techniques.
MaTestLab Inc. offers accessible, quick, and affordable material testing, product testing, and failure analysis services. We support your on-demand testing and expert consultation needs with the help of our extensive network of material testing laboratories situated in the US and other parts of the world.
MATERIAL TESTING
We offer destructive and non-destructive tests over a range of mechanical, electrical, chemical, thermal, optical, corrosion, radiation, and biological testing methodologies defined by ASTM, ISO and other organizations.
PRODUCT TESTING
We help you evaluate and ensure your product quality and performance with standard and custom-made testing solutions. All the tests are done at well-equipped testing laboratories using standard testing methods for best output and satisfaction.
FAILURE ANALYSIS
Failure analysis ensures high levels of quality in every manufacturing process. We help you with getting the best failure or root cause analysis to determine the cause of the failure. The results help you identify means to prevent failure recurrences.
