High-strength flame-retardant polyurethane sealant for high-speed rail passenger cars and preparation method thereof

A technology of polyurethane sealant and high-speed rail, applied in the direction of polyurea/polyurethane adhesive, chemical instruments and methods, adhesives, etc., can solve the problem that it is difficult to meet the performance requirements of high-speed rail cars, and polyurethane sealant is difficult to meet the strength and flame retardancy Requirements and other issues, to achieve the effect of high strength, wide application range and good compatibility
CN107955576BActive Publication Date: 2021-02-02JINAN NORTH TAIHE NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JINAN NORTH TAIHE NEW MATERIAL
Publication Date
2021-02-02

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Abstract

The invention belongs to the technical field of polymer materials, and in particular relates to a single-component high-strength flame-retardant polyurethane sealant for high-speed rail cars and a preparation method thereof. The one-component high-strength flame-retardant polyurethane sealant for high-speed rail passenger cars of the present invention uses basic prepolymers and PU plasticizers as main raw materials, supplemented by fillers and various additives, and the prepared polyurethane sealant has the following properties: It has the advantages of high strength, good flame retardancy and wide application range.
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Description

technical field

[0001] The invention belongs to the technical field of polymer materials, and in particular relates to a single-component high-strength flame-retardant polyurethane sealant for high-speed rail cars and a preparation method thereof. Background technique

[0002] Polyurethane (PU) is a class of polymers containing -NHCOO- repeating structural units in the main chain. It was first discovered by Professor Otto Bayer in Germany in 1937. It was prepared by polyaddition reaction of polyisocyanate and polyol compound, and based on this, it entered the market. industrial applications. my country's polyurethane industry started in the late 1950s and has developed rapidly in the past ten years. At present, widely used polyurethanes include rigid polyurethane plastics, soft polyurethane plastics, polyurethane elastomers and other forms, and are divided into two categories: thermoplastic and thermosetting, and their raw materials are generally in the state of resin. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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