Background of application
The main purpose of UV aging testing of PEVA film (film polietilen vinil asetat) is to evaluate its weather resistance and performance stability to determine its service life and performance performance in outdoor environments. Uv aging test can simulate the effect of UV radiation in sunlight on PEVA film.

Berikut beberapa alasan spesifiknya:

Menilai ketahanan cuaca: PEVA films are commonly used in outdoor applications such as awnings, camping tents, waterproof covers, dll.. Di lingkungan luar ruangan, PEVA films can be affected by factors such as UV rays, perubahan suhu, kelembaban, dan bahan kimia atmosfer. Uv aging test can simulate these factors and evaluate the weatherability of PEVA film under actual use conditions, including anti-aging, anti-UV attenuation and anti-brittleness.

Evaluation of performance stability: UV radiation can adversely affect the chemical composition and physical properties of PEVA films, seperti perubahan warna, reduced gloss, decreased strength, and brittleness. Melalui uji penuaan UV, the performance stability of PEVA film can be evaluated to know whether its performance degradation, kerusakan atau kegagalan akan terjadi pada penggunaan jangka panjang.

Guide material selection and product design: Melalui hasil uji penuaan UV, the performance change of PEVA film under UV radiation can be understood, so as to guide material selection and product design to improve its weather resistance and performance stability.

Quality control and Product certification: UV aging test can be used as part of PEVA film quality control to verify that the product meets the relevant quality standards and certification requirements.

Masa pakai yang lebih lama dan pengurangan biaya perawatan: By evaluating the weatherability and performance stability of PEVA films, it is possible to determine their service life and maintenance period, thereby extending the service life of the films, reducing the frequency of maintenance and replacement, and reducing maintenance costs.

Penerapan dan analisis ruang uji penuaan dipercepat ultraviolet dalam film PEVA

Standar industri
The UV aging test of PEVA films is usually based on the following industry standards:

ASTM D4329: Standard test method published by the American Society for Materials and Testing (ASTM) for the evaluation of UV aging properties of plastic materials. The standard covers different types of plastic materials, including PEVA films.

ASTM D4799: Standard test method published by ASTM for the evaluation of weather resistance and UV radiation stability of polyethylene vinyl acetate copolymer films.

ISO 4892-3: Standar yang diterbitkan oleh Organisasi Internasional untuk Standardisasi (ISO) for UV radiation aging tests of paints and varnishing, Bagian 3 of which applies to UV aging tests of plastic materials.

GB/T 16585: Standard on the aging test methods of plastics issued by the Standardization Administration of China, including the requirements and methods of ultraviolet aging test.

Penerapan dan analisis ruang uji penuaan dipercepat ultraviolet dalam film PEVA

These standards provide guidance and specifications for UV aging tests of PEVA thin films, termasuk persyaratan alat uji, Metode tes, kondisi dan durasi pengujian. Tergantung pada aplikasi dan persyaratan spesifik, standar industri spesifik lainnya atau spesifikasi internal perusahaan juga dapat dirujuk.

Note that the exact standard requirements may vary depending on the location, industry, and specific product needs. Karena itu, before performing UV aging tests on PEVA films, the applicable standards and specifications should be carefully read and followed to ensure the accuracy and comparability of the tests.

The following are some specific application cases of PEVA film UV aging test:

Awnings: PEVA film is often used in automotive awnings or outdoor awnings. Melalui tes penuaan UV, it is possible to evaluate the weather resistance and color stability of PEVA films under sunlight exposure, ensuring that they can withstand UV radiation and other environmental factors for a long time without degradation or color change.

Penerapan dan analisis ruang uji penuaan dipercepat ultraviolet dalam film PEVA

Camping tents: PEVA film is also commonly used as an outer covering material for camping tents. Melalui tes penuaan UV, the weatherability and durability of PEVA films in outdoor environments can be evaluated to ensure that they can withstand conditions such as prolonged sun exposure, hujan, and wind blowing without damage or deformation.

Waterproof cover: PEVA film is widely used in waterproof cover materials, such as ponchos, pool cover, dll.. Melalui uji penuaan UV, the weatherability and waterproof performance of PEVA film in outdoor environment can be evaluated to ensure that it can maintain good waterproof effect in the long term.

Packaging materials: PEVA film is also widely used in the packaging industry, such as food packaging, drug packaging, dll.. Melalui tes penuaan UV, the weatherability and physical properties of PEVA films under light and oxygen exposure can be evaluated to ensure that they do not degrade, deform or affect the quality and safety of the packaging during the packaging process.

Penerapan dan analisis ruang uji penuaan dipercepat ultraviolet dalam film PEVA

Metode operasi
Steps and precautions for testing the aging resistance of PEVA film in UV aging test chamber:

Persiapan sampel: Select appropriate sized PEVA film samples for testing. Pastikan persiapan sampel memenuhi persyaratan standar atau spesifikasi yang relevan.

Pengaturan kondisi pengujian: sesuai dengan kondisi pengujian yang disyaratkan dan persyaratan standar, mengatur parameter ruang uji penuaan UV, termasuk intensitas radiasi, suhu, kelembaban, dll.. Pastikan ruang uji diatur sesuai dengan spesifikasi dan persyaratan yang relevan.

Penempatan sampel: Place the PEVA film sample on the sample holder inside the test chamber to ensure that the sample is flat, bebas dari gelembung dan kerutan, and to avoid mutual interference between samples.

Uji coba: Mulai ruang uji penuaan UV dan paparkan sampel terhadap radiasi UV dan faktor lingkungan lainnya dalam kondisi yang ditentukan. Sesuai dengan persyaratan standar, atur waktu tes yang sesuai, biasanya ratusan hingga ribuan jam.

Observasi rutin: Regularly observe the changes of PEVA film samples, termasuk perubahan warna, gloss changes, retakan permukaan, physical properties changes, dll.. Catat setiap perubahan atau kerusakan yang terlihat.

Akhir tes dan evaluasi: Setelah menyelesaikan tes, sampel dikeluarkan untuk evaluasi dan pengujian. The physical and chemical properties of PEVA film samples can be tested to determine their aging resistance.

Saat melakukan uji penuaan UV, hal-hal berikut juga perlu diperhatikan:

Pastikan peralatan ruang uji penuaan UV berfungsi dengan baik, dan beroperasi sesuai dengan manual pengoperasian dan persyaratan keselamatan.

Periksa dan catat suhunya, kelembaban, intensitas radiasi dan parameter lain dari ruang uji untuk memastikan stabilitas dan akurasinya.

Penerapan dan analisis ruang uji penuaan dipercepat ultraviolet dalam film PEVA

Pastikan pemilihan sampel, persiapan dan penempatan sesuai dengan standar dan persyaratan.

Periksa dan rawat peralatan ruang uji secara teratur untuk memastikan pengoperasian dan keakuratannya normal.

Berhati-hatilah untuk mengamati dan mencatat setiap perubahan dalam sampel selama pengujian untuk evaluasi dan analisis selanjutnya.

The UV aging test can provide important information about the weatherability and performance stability of PEVA films in exposed environments, helping to ensure that the films can maintain their functionality and reliability in a variety of climatic conditions for a long time.