Test standard for impact resistance of n-butyl acrylate in plastic modification?

n-butyl acrylate in plastic modified impact resistance test

With the wide application of plastics in various industries, the demand for modified plastics is increasing. As an important modifier, n-butyl acrylate plays a key role in improving the impact resistance of plastics. In order to ensure that the quality and performance of modified plastics meet the standards, impact resistance testing is an essential link. In this paper, the role of n-butyl acrylate, impact resistance test methods and standards are analyzed in detail.

1. of n-Butyl Acrylate in Plastic Modification

n-Butyl acrylate is an acrylate compound with excellent properties, which is often used in plastic modification to improve the flexibility, impact resistance and crack resistance of materials. It forms a composite material with high strength and high toughness by chemical reaction or physical mixing with the plastic matrix. Especially in the modification of polyolefin plastics (such as polypropylene and polyethylene), n-butyl acrylate can significantly improve the impact resistance of the material, making it suitable for scenarios requiring high mechanical strength.

In the process of modification, the introduction of n-butyl acrylate can be achieved in the following two ways:

1. Chemical bonding: through free radical polymerization or addition reaction, butyl acrylate and plastic matrix to form a chemical bond, thereby enhancing the material's structural stability.
2. Physical mixing: n-butyl acrylate and plastic matrix by physical mixing to form a blend, giving the material better toughness and impact resistance.

Either way, the addition of n-butyl acrylate can effectively improve the impact resistance of plastics and become an important additive in the field of modified plastics.

2. Impact Resistance Test Standards

Impact resistance is one of the important indicators to measure the performance of plastics after modification, which is related to the safety and reliability of materials in practical applications. In order to ensure that the impact resistance of modified plastics is expected, it is necessary to test and evaluate according to relevant test standards. These standards not only provide a reference for production and application, but also provide a guarantee for product quality verification.

In impact resistance testing, commonly used indicators include impact strength, impact toughness and impact absorption energy. These indicators reflect the resistance of the material when it is impacted by external forces. Through the test can fully understand the performance of modified plastics, so as to guide the production and application.

3. n-butyl acrylate modified plastics

In order to test the impact resistance of butyl acrylate modified plastics, the commonly used test methods mainly include the following:

1. Suspension beam impact test ((Charpy Impact Test)) The suspension beam impact test is a classical impact test method, which is suitable for evaluating the failure of materials under impact load. In this test, the sample is fixed on the test machine, the impact front test bar impacts the sample at a certain speed, and the energy required for the sample to break is recorded. By comparing the impact absorption energy of unmodified and modified materials, the modification effect of n-butyl acrylate on the impact resistance of plastics can be evaluated.

2. Pendulum Impact Test (Izod Impact Test) The pendulum impact test is another commonly used impact test method. Similar to the suspension beam impact test, this method records the energy required for the specimen to break by releasing the pendulum to apply an impact load to the specimen. Compared with the suspension beam impact test, the pendulum impact test is suitable for the sample with regular shape, and the operation is more flexible.

3. Drop Weight Impact Test The falling dart impact test simulates the impact load that may be received in actual use by releasing a heavy object (falling dart) from a height. This method is suitable for evaluating the impact resistance of materials at different impact speeds, and can more truly reflect the performance of modified plastics in practical applications.

Through these test methods, the impact resistance of n-butyl acrylate modified plastics can be comprehensively evaluated, and a scientific basis for the optimization and application of materials can be provided.

4. Factors Affecting Impact Resistance Test Results

When testing the impact resistance of n-butyl acrylate modified plastics, the following factors may affect the test results:

1. Material structure and degree of modification The structure of the modified plastic and the addition of n-butyl acrylate directly affect its impact resistance. For example, excessive addition of n-butyl acrylate may affect the rigidity of the material, thereby reducing its overall performance.

2. Test conditions Test conditions (e. g., temperature, humidity, impact velocity, etc.) can significantly affect test results. For example, a high temperature or high humidity environment may cause changes in material properties, thereby affecting the accuracy of test results.

3. Sample preparation The preparation process of the test specimen (such as injection molding, extrusion molding, etc.) may affect its internal structure and performance, thereby affecting the test results.

In order to ensure the accuracy and consistency of test results, sample preparation and test operations need to be carried out in strict accordance with relevant standards.

5. n-butyl acrylate modified plastics impact resistance test

In order to standardize the impact resistance test of n-butyl acrylate modified plastics, a series of relevant standards have been formulated at home and abroad. These standards provide clear guidance on test methods, test conditions, and analysis of results.

Common impact resistance testing standards include:

1. ISO 179-1: Plastics-Determination of impact strength-Suspension beam impact method The standard specifies in detail the test principle, sample preparation, test equipment and result calculation of the suspension beam impact test.

2. ASTM D6110: Test Method for Impact Strength of Plastic Cantilever This standard is suitable for evaluating the impact resistance of plastics by the suspension beam impact test.

3. ISO 180: Plastics-Determination of tensile impact strength This standard is suitable for evaluating the impact resistance of plastics by the pendulum impact test.

By following these standards, we can ensure the scientificity and comparability of the test results, and provide a reliable basis for the development and application of modified plastics.

6. summary and prospect

As an important additive for plastic modification, n-butyl acrylate significantly improves the impact resistance of the material. In order to ensure the quality and performance of modified plastics, impact resistance testing is an essential link. Through the suspension beam impact test, pendulum impact test and falling dart impact test, the impact resistance of n-butyl acrylate modified plastics can be comprehensively evaluated. Testing and analysis in strict accordance with relevant standards can provide a scientific basis for the optimization and application of materials.

In the future, with the continuous progress of plastic modification technology, the application field of n-butyl acrylate will be more extensive, and the impact resistance test standard will be further improved. This will provide more possibilities for the development and application of modified plastics and promote the continuous progress of related industries.

If you need more detailed technical support or testing services, please feel free to contact a professional chemical technical team for more testing standards and application suggestions on butyl acrylate modified plastics.