一种防水透气透湿微多孔薄膜的制备工艺

Preparation process of waterproof, gas-permeable and moisture-permeable porous thin film

Abstract

The invention discloses a preparation process of a waterproof, gas-permeable and moisture-permeable porous thin film. The preparation process mainly comprises the following steps: step 1) selecting a carrier: selecting release cloth with gas permeability of 3-20cm<3>/cm<2>/s as a carrier and performing waterproof treatment; step 2) controlling the gas permeability of the carrier, performing calendering treatment on the carrier, and controlling the gas permeability within 3-10cm<3>/cm<2>/s; step 3) preparing a coating solution by mixing the following components in parts by weight: 100 parts of solvent type polyurethane resin, 50-70 parts of DMF (dimethylformamide), 20-50 parts of nano-calcium carbonate, 1.2-1.5 parts of a surfactant, 0.5-2 parts of a water splashing agent and 0.5-1.5 parts of a peeling aid; and step 4) forming and processing the thin film, uniformly coating the coating solution on the carrier, solidifying the coating solution, then washing with water, drying, shaping, cooling and then peeling to obtain the thin film. The process disclosed by the invention is simple and low in production cost, and by adopting the process, gas permeability, moisture permeability and waterproofness of the polyurethane film are effectively ensured.
本发明公开了一种防水透气透湿微多孔薄膜的制备工艺,主要包括以下步骤:步骤1选择载体,选择透气率为3~20cm3/cm2/s的离型布作为载体,并进行防水处理;步骤2载体透气率控制,将载体进行压光处理,将透气率控制在3~10cm3/cm2/s内;步骤3涂覆液配比,按照重量分数计由100份溶剂型聚氨酯树脂、50~70份DMF、20~50份纳米碳酸钙、1.2~1.5份表面活性剂、0.5~2份泼水剂和0.5~1.5份助剥剂混合制成;步骤4薄膜成型加工,将涂覆液均匀涂布在载体上,待涂覆液凝固,然后水洗、烘干定型,待冷却后剥离,得到薄膜。本发明工艺简单、生产成本低,有效保证了聚氨酯膜的透气、透湿和防水性能。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    CN-101768872-AJuly 07, 2010吴新民微多孔干法防水透湿面料及其生产方法
    CN-102168379-AAugust 31, 2011上腾新材料科技(苏州)有限公司一种耐高水压高透湿聚氨酯高分子材料
    CN-103866579-AJune 18, 2014东丽纤维研究所(中国)有限公司一种透气防水透湿湿法涂层面料及其加工方法和用途

NO-Patent Citations (0)

    Title

Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-104742480-AJuly 01, 2015广州钰琪璐塑胶科技有限公司Preparation method of waterproof and moisture permeable TPU fabric