ASTM D2734 Void Content of Reinforced Plastics

Test method A of ASTM D2734 is used for Void content testing of reinforced plastics or composites. High void content in polymers and plastics significantly reduces the strength of composite materials. Monitoring the void content of every lot ensures consistency in the manufacturing process.... Read More

  • Average 30% Cost
    Savings

  • 100% Confidentiality
    Guarantee

  • Free, No-obligation
    Consultation

  • 100% Customer
    Satisfaction

    TRUSTED BY ENGINEERS FROM

    Scope:

    ASTM D2734 (Test method A) test is used for the determination of the void content of reinforced plastics or composites. The test method is appropriate to composites for which the effects of ignition on the materials are recognized. Most plastics, glasses, and reinforcements fall into this class. ASTM D2734 test method is not applicable to composites for which the effects of ignition on the plastics, reinforcement, and any fillers are unidentified. This class may comprise silicone resins, which do not burn off entirely, reinforcements consisting of organic materials, metals, or inorganic materials which may gain or lose weight, and fillers containing oxides and carbonates that may gain or lose weight.

    Test Procedure:

    For the ASTM D2734 Method A test, the measured density of the material is calculated by the dry/wet weight method. To calculate the void content of a material, theoretical densities of both the resin and the reinforcing material are required. Generally, the individual densities of the resin and reinforcing material are received from the supplier. Then, the actual density of the material is calculated. After that, the weighted sample is kept in a pre-weighed crucible and burnt at a higher temperature of 600°C in a muffle furnace in the air. It is burnt until only the particles of reinforcing material remain. The crucible is then cooled and weighed. From the available data, the resin content is determined as a weight percent. Finally, the void content is calculated by comparing the actual density to the theoretical density.

    Specimen size:

    The size is usually 1 inch by 1 inch thickness.

    Data:

    T = Theoretical Density
    Td = Theoretical composite density
    R = Resin weight %
    r = Reinforcement weight %
    T = 100 / (R / D + r / d)
    V = Void content (volume %)
    Md = measured composite density
    D = Density of resin
    d = Density of reinforcement
    V = ( Td – Md ) / T

    Conclusion:

    ASTM D2734 is a standard test method for void content of reinforced plastics.

    OUR SERVICES

    Core Materials Testing Services

    Metrology

    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing
        •  
          STEP 01

          You share material and testing requirements with us

        •  
          STEP 02

          You ship your sample to us or arrange for us to pick it up.

        •  
          STEP 03

          We deliver the test report to your email.

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Quick Turnaround and Hasslefree process
          • Confidentiality Guarantee
          • Free, No-obligation Consultation
          • 100% Customer Satisfaction

            ddd

            Let us combine our capabilities to achieve success!!