Low-shrinkage alcohol-disinfectant-resistant PC/PBT alloy material and preparation method thereof

• Main Authors: WANG YINJIE, SONG QING, CHEN XIAODONG, YANG TAO, MENG CHENGMING, XU QUNJIE
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to a low-shrinkage alcohol-disinfectant-resistant PC/PBT (polycarbonate/polybutylene terephthalate) alloy material and a preparation method thereof. The low-shrinkage alcohol-disinfectant-resistant PC/PBT alloy material comprises the following components in parts by weight: 100 parts of PC resin; 15 to 25 parts of PBT resin; 2-5 parts of a toughening agent; 0.3 to 1.2 parts of an alcohol-resistant agent; 0.2 to 0.5 part of a shrinkage rate adjusting agent; the alcohol resistant agent is octaphenylcyclotetrasiloxane; the shrinking percentage adjusting agent is isopropyl titanate; the low-shrinkage alcohol-disinfectant-resistant PC/PBT alloy material is prepared by the following steps: weighing the PC resin, the PBT resin, the flexibilizer, the alcohol-resistant agent and the shrinkage rate regulator according to a formula, fully and uniformly mixing the components by a high-speed mixer, and extruding and granulating by a double-screw extruder. The shrinkage rate of the product can reach 0