Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method for waterproof polyurethane paint used for high-speed railway bridge floor

A polyurethane waterproofing, high-speed railway technology, applied in the direction of coating, etc., can solve the problem that the waterproof coating can not meet the requirements and so on

Inactive Publication Date: 2016-04-27
SHAANXI YUHANG ELECTRONICS
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing waterproof coatings on the market cannot meet the requirements, it is necessary to study this and improve its performance

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0011] Specific embodiments: the preparation process of the present invention includes three steps of preparation of component A, preparation of component B and preparation of waterproof coating;

[0012] The preparation step of the A component is: add the measured polyether polyol (TEP330N), polypropylene oxide polyol (TMN2000), polytetrahydrofuran Ether glycol (PTMG1000), and heated to 110 ℃ vacuum dehydration 2h, when the measured moisture content is less than 0.2%, stop vacuuming and lower to normal temperature, add the measured diisocyanate (TDI), pass through N 2 , heat up and keep the system at 80°C for 3h, when the NCO content of the system reaches n NC0 / n OH When it is 1.15 / 1~1.2 / 1, stop the reaction and use it as component A for standby;

[0013] The preparation step of the B component is to mix MOCA, chain extender BHP209, talcum powder, color paste BH301, ultraviolet absorber UV327, anti-aging agent 1010, MOCA: BHP209=13 (mass ratio), and grind in a conical mill...

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
Login to View More

PUM

PropertyMeasurementUnit
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method for a waterproof polyurethane paint used for a high-speed railway bridge floor, belonging to the field of preparation waterproof pavement materials. The waterproof polyurethane paint prepared by using the method has good mechanical properties. According to the method, a prepolymer is prepared from polyether polyol and toluene diisocyanate, a mixture of a chain extender and aromatic amine is used as a curing agent, and the two-component waterproof polyurethane paint with a component ratio of 1: 1 is prepared and is made into a waterproof film. The waterproof film prepared by using the method has good mechanical properties and meets requirements on waterproof polyurethane coatings prescribed in Tentative Specification for Waterproof Layers on Concrete Bridge Floor of Passenger Transport Line.

Description

technical field [0001] The invention belongs to the field of pavement waterproof material preparation. Background technique [0002] With its advantages of convenience, speed and low cost, high-speed railways have been greatly developed around the world, and more than 7,000 kilometers of high-speed railways have been built. High-speed railway has become the direction of world railway development. According to China's "Comprehensive Transportation Network Medium and Long-term Development Plan", by 2020, the total mileage of China's railway network will reach more than 120,000 kilometers, including more than 15,000 kilometers of dedicated passenger lines. There are 31 passenger dedicated lines planned, and 19 lines are under construction, with a total mileage of 7300km. In order to ensure the safety and service life of high-speed railways, more and more attention has been paid to the design, material selection and construction of bridge waterproofing projects, and the requir...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/66C08G18/48C08G18/32
Inventor 郝青
Owner SHAANXI YUHANG ELECTRONICS