Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of polyurethane modification and plugging glue, applied in the field of polyurethane materials, can solve the problems of easy crack expansion, strong odor and high corrosion, and achieve the effect of ensuring repairing effect, good operation safety and fast curing speed.
Active Publication Date: 2016-06-22
YIXIANG BLOW MOLDING FURNITURE (NINGBO) CO LTD
View PDF3 Cites 10 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Among them, acrylate mastic cures faster, but the cured product is brittle, prone to cracks, strong odor, high toxicity, not environmentally friendly, not alkali resistant, more corrosive to opponents, and difficult to operate...
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
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0030] 1. Preparation of component A
[0031] Add polyether to the reaction kettle, heat to 115-120°C, vacuum dehydrate for 2 hours, cool down and set aside;
[0032] Add polyether to the reaction kettle, heat to 115-120°C, vacuum dehydrate for 2 hours, and obtain dehydrated polyether after cooling;
[0033] Add polyisocyanate to the reaction kettle, heat to 60°C, stir, then add the dehydrated polyether, the weight ratio of the polyisocyanate to the dehydrated polyether is 100:5-20, keep warm at 80°C, when the reaction material NCO in - When the group content is 5%, the reaction is stopped, and the prepolymer is obtained after cooling;
[0034] Add the epoxy resin to the reaction kettle, the weight ratio of the epoxy resin to the prepolymer is 100:5-20, then add the prepolymer, react at 80°C for 3 hours, discharge, and cool to 40°C ℃ or below, to obtain polyurethane modified epoxy resin.
[0035] Add diethylene glycol to the polyurethane modified epoxy resin, stir evenly, ...
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
Property
Measurement
Unit
Granularity
aaaaa
aaaaa
Granularity
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses polyurethane-modified daub for leaking stoppage. The daub comprises a component A, a component B and a component C in the total weight part ratio being 100: (40-60): (5-20), wherein the component A is prepared from polyurethane-modified epoxide resin, mica powder Al2O3 and diethylene glycol; the component B is prepared from diethylenetriamine, a single epoxy compound, a DMP (dimethyl phthalate)-30 catalyst and colloidal graphite; the component C is prepared from thiourea or a thiourea derivative, CaO and/or Ca(OH)2 and 8-hydroxyquinoline. Compared with the prior art, the provided polyurethane-modified daub for leaking stoppage has good toughness, can effectively prevent propagation of cracks in a pipe, guarantees the repairing effect and can stop leakage at the temperature and under pressure, cracks of equipment can be prevented through coating in advance, the curing speed of the daub in winter is high, the material is environment-friendly, no side effects and odors are produced, and the operation safety is good.
Description
technical field [0001] The invention belongs to polyurethane material technology, in particular to a polyurethane modified plugging cement. Background technique [0002] Plugging cement is used in power plants, oil refineries, chemical plants, chemical fertilizer plants, chemical fiber plants, steel plants, pharmaceutical plants, printing and dyeing plants, paper mills, heating, gas supply (coal gas, liquefied petroleum gas, etc.), water supply and drainage systems, storage It is an excellent material for plugging leakage of equipment, pipes, valve flanges, various parts of pipes, wall of equipment, self-sealing valves, bonnets, valve bodies, threaded joints, pipes and flanges in food industry and other industries. , to ensure the tightness of the pipeline and ensure production safety. [0003] Existing plugging cement mainly contains acrylate cement and epoxy resin cement. Among them, acrylate mastic cures faster, but the cured product is brittle, prone to cracks, strong ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more