HG/T 4229-2011

Manufacturers of polyurethane chain extender HER use this standard to ensure product quality meets industry requirements. Quality inspection departments rely on this standard for factory release testing and conformity assessment. This standard helps unify technical specifications and test methods for HER, ensuring consistent performance in downstream polyurethane products.

聚氨酯扩链剂HER的生产企业使用本标准来确保产品质量符合行业要求。质检部门依据本标准对产品进行出厂检验和判定。本标准有助于统一聚氨酯扩链剂HER的技术指标和检测方法，保障下游聚氨酯制品的性能稳定。

This standard specifies quality requirements, test methods, inspection rules, marking, packaging, transport and storage for polyurethane chain extender HER (resorcinol bis(β-hydroxyethyl) ether). It applies to products made by condensation of resorcinol with ethylene oxide. Key technical indicators include appearance (white powder), initial melting point (≥83.0°C), moisture (≤0.10%), purity (≥98% by GC), and hydroxyl value (555±5 mgKOH/g). Test methods involve gas chromatography for purity and Karl Fischer titration for moisture. Inspection rules define factory release and retesting procedures. Packaging uses cardboard drums lined with black plastic bags.

本标准规定了聚氨酯扩链剂HER（间苯二酚双(β-羟乙基)醚）的质量要求、试验方法、检验规则、标志、包装、运输和贮存。适用于间苯二酚与环氧乙烷缩合制成的产品。主要技术指标包括外观（白色粉末）、初熔点（≥83.0℃）、水分（≤0.10%）、纯度（≥98%，GC法）和羟值（555±5 mgKOH/g）。试验方法涉及气相色谱法测纯度、卡尔·费休法测水分等。检验规则明确了出厂检验和复检要求，包装采用内衬黑色塑料袋的纸板桶。