T/XJSL 0009-2024 Active Group standards

T/XJSL 0009-2024 Antioxidant masterbatch for polyethylene products

Publish Date: 2024-03-15 Implement Date: 2024-06-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/XJSL 0009-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2024-03-15

Implement Date: 2024-06-01

Scope

Main technical content: 1. Standard classification: To clearly identify the applications of polyethylene products in different scenarios and meet the demand for anti-aging masterbatches, masterbatches are divided into three types: heat-resistant oxidation, light-resistant oxidation, and combined heat-resistant/light-resistant oxidation. 2. Setting the oxidation induction period indicator: In recent years, China has focused on addressing the pollution of polyethylene residual films in farmland and proposed requirements for mechanized recycling of residual films. However, the current anti-oxidation masterbatches with an oxidation induction period of 300 minutes cannot meet the requirements of product quality standards for residual physical and mechanical strength after use in films, tapes, pipes, and boxes. These products often fragment severely after use, making recycling and reuse difficult and hindering environmental protection efforts. Through discussions with enterprises producing masterbatches according to an oxidation induction period of 400 minutes, relevant experts, and enterprises using these masterbatches in production, the oxidation induction period indicator for polyethylene anti-oxidation masterbatches has been set to 400 minutes (under 200°C conditions). 3. The three types of anti-aging masterbatches (heat-resistant oxidation, light-resistant oxidation, and combined heat-resistant/light-resistant oxidation) differ in their anti-aging mechanisms, but ultimately aim to prevent polyethylene polymers from contacting with oxygen during the aging process, thereby reducing the generation of oxygen free radicals that cause catalytic chain scission and cross-linking reactions. Therefore, all detection indicators are set to test the oxidation induction period of the anti-oxidation masterbatches, which reduces testing time and improves efficiency. 4. Considering that anti-oxidation masterbatches with high melt flow rate may reduce product mechanical proper