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Waterproof, low temperature resistant, soft and moisture permeable coating glue and preparation thereof

A technology of coating glue and low temperature resistance, which is applied in the field of applied chemistry, can solve the problems of intermolecular movement, decrease in moisture absorption and diffusion, decrease in moisture permeability, hardening of polyurethane, etc., to achieve feasible process, improved aging resistance, and high water pressure resistance Effect

Inactive Publication Date: 2009-07-15
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, its disadvantages are firstly poor washing performance, low water pressure resistance and poor adhesion, and secondly, polyurethane hardens at low temperature, intermolecular movement and moisture absorption diffusion decrease, resulting in decreased moisture permeability, so it is not suitable for use at low temperatures

Method used

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  • Waterproof, low temperature resistant, soft and moisture permeable coating glue and preparation thereof
  • Waterproof, low temperature resistant, soft and moisture permeable coating glue and preparation thereof

Examples

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Embodiment Construction

[0039] The following examples serve to illustrate the present invention without limiting it.

[0040] The coating glue of the present invention is obtained by mixing three components of a coating agent, a crosslinking agent and a crosslinking accelerator in a solvent.

[0041] 1. Preparation of coating agent

[0042]Coating agent synthesis process: put part of diisocyanate (40-70%), hydrocarbon hydroxyl polydimethylsiloxane, and polyether moisture permeability factor 1 into the synthesis kettle, at a certain temperature (70-100°C), After the primary reaction for a certain period of time (1-8 hours), after detecting that the amount of free isocyanate meets the design requirements (the amount of free isocyanate is set at 30-60%), add part of the solvent (10-40%), and add polyether moisture permeability factor 2. Chain extender and modified lignocellulose powder, after the secondary reaction for a certain period of time (1-3 hours), then gradually add the remaining diisocyanate,...

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Abstract

The invention provides a water-proof, cold-resistant, flexible and moisture-permeable coating adhesive, which is prepared by mixing three components of coating agent, crosslinking agent and crosslinking promoter with a solvent when in use; the coating agent is organosilicone polyurethane copolymer containing 500 to 1000 mesh of advanced lignocellulose micropowder; the amounts of the crosslinking agent and crosslinking promoter are 2-5wt% of that of the coating agent; and the viscosity of the coating adhesive is 8000 to 15000 mPa.s. The advanced organosilicone polyurethane coating adhesive in the invention is coated on a base fabric so as to prepare a coated fabric; the moisture permeability is greater than 5000 g / m.d; the water pressure resistance is greater than 100 kPa; the aging resistant performance is good; the blocking resistance is obviously improved; the moisture permeability is less than 20% reduced and the bending length is basically unchanged at a low temperature; and the coated fabric has good flexibility and very good low temperature resistant characteristic, and is in particular applied to being used as a coating material of clothes having water-proof and moisture-permeable functions at a low temperature.

Description

technical field [0001] The invention belongs to the field of applied chemistry and relates to a functional glue that can be used in fabric coatings, in particular to a waterproof, low-temperature-resistant, soft and moisture-permeable coating glue and its preparation method and application. Background technique [0002] When people are outdoors, they often encounter rain and snow. They need waterproof, windproof, and low temperature resistant clothing to protect their bodies, especially for military, police, and outdoor workers. Multifunctional clothing that is waterproof, soft, moisture-permeable, and cold-resistant It plays an extremely important role. The waterproof and moisture-permeable functions of this type of clothing are generally realized through the coating on the fabric. [0003] Among the current coating technologies, the dry / wet process technology represented by polyurethane plays a huge role in promoting the development of waterproof and moisture-permeable pro...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D197/02D06N3/14
Inventor 张建春郝新敏严欣宁赵鹏程樊丽君唐丽
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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