Polyurethane elastic self-leveling mortar

A self-leveling mortar and polyurethane elastic technology, applied in the field of polyurethane elastic self-leveling mortar, can solve problems such as national economic losses, and achieve the effects of extending service life, high tensile resistance and reducing direct economic losses.

Inactive Publication Date: 2012-07-18
KANGKERUI BUILDING MATERIALS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, public facilities with high traffic and high social and economic value, such as airports, roads and expressways, need at least 7 days to maintain when repairing after damage, if traditional cement concrete is used, which will inevitably cause huge losses to the national economy

Method used

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  • Polyurethane elastic self-leveling mortar
  • Polyurethane elastic self-leveling mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of component A:

[0037] Using a high-speed disperser, add 90 parts of polyisocyanate (modified MDI) in a sealable stainless steel reaction tank or reaction kettle under vacuum, air isolation or inert gas protection; 10 parts of water-absorbing agent and defoamer in total, Thoroughly mix and stir for about 15 to 30 minutes, preferably vacuum defoaming for 30 minutes to obtain component A, and then pack the product in a vacuum, in the absence of air or under the protection of an inert gas.

[0038] Preparation of component B:

[0039] Using a high-speed disperser, pour 30 parts of castor oil and 5 parts of toner into a stainless steel reaction tank or reaction kettle under vacuum, air isolation or inert gas protection, and then disperse at a speed of more than 1000 revolutions per minute. About 30 minutes to make the fineness less than 20 microns; then put 55 parts of castor oil and 10 parts of leveling agent, dehydrating agent, defoaming agent and catalyst ...

Embodiment 2

[0044] Preparation of component A:

[0045] Use a closed stainless steel reaction tank or reaction kettle, under vacuum, air isolation or inert gas protection, add 100 parts of polyisocyanate (modified MDI) in the airtight reaction tank or reaction kettle; then vacuum, isolation air or Under the protection of inert gas, the product can be packed.

[0046] Preparation of component B:

[0047]Using a high-speed disperser, pour 30 parts of castor oil and 5 parts of toner into a stainless steel reaction tank or reaction kettle under vacuum, air isolation or inert gas protection, and then disperse at a speed of more than 1000 revolutions per minute. About 30 minutes to make the fineness less than 20 microns; then put 55 parts of castor oil and 10 parts of leveling agent, dehydrating agent, defoaming agent and catalyst under vacuum, air isolation or inert gas protection, and mix and stir for 30 minutes Then it is best to degas under vacuum for 30 minutes to obtain component B, and...

Embodiment 3

[0052] Preparation of component A:

[0053] In a vacuum, isolated from air or under the protection of an inert gas, use a high-speed disperser to add 90 parts of polyisocyanate (modified MDI) into a sealable stainless steel reaction tank or reaction kettle; a total of 10 parts of water-absorbing agent and defoamer, Thoroughly mix and stir for about 15-30 minutes, preferably vacuum defoaming for 30 minutes to obtain component A, and then pack the product in a vacuum, air-isolated or protected by an inert gas.

[0054] Preparation of component B:

[0055] Under the conditions of vacuum, air isolation or inert gas protection, use a high-speed disperser, first pour 30 parts of castor oil and 3 parts of toner into a stainless steel reaction tank or reaction kettle, and then disperse at a speed of more than 1000 revolutions per minute. For about 30 minutes, make the fineness less than 20 microns; then put 60 parts of castor oil and 7 parts of leveling agent, dehydrating agent, defo...

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Abstract

The invention provides polyurethane elastic self-leveling mortar, comprising a component A, a component B and a component C. The component A includes polyisocyanate. The component B includes castor oil and derivatives of the castor oil. The component C is any one of quartz sand aggregate, sand stone or quartz powder, or the mixture of more than one of the three materials. The weight ratio of component A to component B to component C is 1:1.5-2.5:12-18. The mortar has the excellent characteristics such as high elasticity, high tensile rate, high compression strength and impact resistance, only less than 2h of curing molding, self leveling, endurance of high temperature over 100 DEG C and low temperature at minus 40 DEG C, the service life of the mortar can reach 15-30 years, and the mortar is especially suitable for grouting and pouring the expansion joints of the highways, bridges and building, for pouring manhole covers and open ditch cover plates on municipal roads and in parking lots, and extremely for rapid repair of airports, roads and expressways.

Description

technical field [0001] The invention relates to concrete and elastic repair mortar, in particular to a polyurethane elastic self-leveling mortar (elastic concrete). Background technique [0002] With the development of the global economy, a large number of concrete structure projects such as airports, expressways, subways, high-speed railways, and elevated roads have been built. How to maintain these concrete structures so that they can run smoothly and prolong their service life has become an increasingly popular research topic in the construction engineering field, especially the expansion joints used in a large number of these structures, which are subjected to the most complex impact, corrosion and various stresses It has become the most important bottleneck position that affects the life and driving safety of bridges, expressways, and viaducts. [0003] Currently, cement concrete or fiber-reinforced cement concrete is commonly used for pouring expansion joints. It has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/02C04B111/62C04B111/72C04B111/70
Inventor 钱睿科
Owner KANGKERUI BUILDING MATERIALS SHANGHAI
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