Unlock instant, AI-driven research and patent intelligence for your innovation.
A kind of mine reinforcement material
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for mines and hydrochloric acid, applied in the direction of organic chemistry, etc., can solve the problems of small diffusion radius and poisoning of slurry
Inactive Publication Date: 2017-01-04
NORTH CHINA UNIVERSITY OF TECHNOLOGY
View PDF4 Cites 0 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
Polyurethanegrout swells and reacts with water, but it is easy to block channels in micro-cracked rock mass, resulting in a smaller diffusionradius of the grout
Urea-formaldehyde resin + acrylamideslurry is actually a mixture of urea-formaldehyde resin slurry and acrylamide. A 2-N methyleneacrylamide material is used as an auxiliary material in the slurry. The monomer of this material has a large High toxicity. Although there is no report of water poisoning in China, there are reports of Japanese people being poisoned by grouting in relevant literature. This kind of grouting material has been banned by the government in Japan
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
Embodiment 1
[0014] Embodiment 1: the preparation of formula I compound:
[0015] 5-Amino-2,4,6-tribromo-N,N'-bis(2,3-dihydroxypropyl)isophthalamide (15mmol) and aminotoluenesulfonic acid (TsOH) (0.6mmol) were added into 2,2-dimethoxypropane (30ml). The suspension mixture was stirred at ambient temperature for 48 hours and the ethanol formed was distilled off. The reaction mixture was evaporated in vacuo to give the compound of formula I as a white solid, 6.96 g, (R F =0.45 ethyl acetate), melting point 231-232°C.
[0017] Embodiment 2: the preparation of composition:
[0018] Get ordinary Portland 425 cement 100g, tap water 100ml, p-toluenesulfonic acid 0.6g, mass percent is 98% phosphoric acid 0.8g, mass percent is 37% hydrochloric acid 1g, ethylene glycol 0.1g, and 2.5g formula I Compound, premix cement and additives to ensure uniform mixing. Add the compound of formula I into water for stirring and add it to the slurry mixer. Add the mixed powder (cement and additives) into the mixer, start stirring, stir slowly for 2 minutes, and stir rapidly for 2 minutes to obtain the composition.
Embodiment 3
[0019] Embodiment 3: the preparation of composition:
[0020] Get 100g of ordinary Portland 425 cement, 100ml of tap water, 0.8g of p-toluenesulfonic acid, 1.2g of phosphoric acid with a mass percentage of 98%, 0.8g of hydrochloric acid with a mass percentage of 37%, 0.1g of ethylene glycol, and 2.9g of the formula I compound, premix cement and additives to ensure uniform mixing. Add the compound of formula I into water for stirring and add it to the slurry mixer. Add the mixed powder (cement and additives) into the mixer, start stirring, stir slowly for 5 minutes, and stir rapidly for 2 minutes to obtain the composition.
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
flexural strength
aaaaa
aaaaa
compressive strength
aaaaa
aaaaa
flexural strength
aaaaa
aaaaa
Login to View More
Abstract
The invention relates to a material for reinforcing a mine. The material comprises a component A, a component B and a composition of cement, wherein the component A is a compound in a formula I; the component B is an assistant; cement is ordinary portland cement; the assistant is prepared from the following raw materials in parts by weight: 0.6-1.0 part of p-toluenesulfonic acid, 0.8-1.3 parts of phosphoric acid, 0.5-1.0 part of hydrochloric acid and 0.1 part of ethylene glycol; the mass percentage of the hydrochloric acid is 37%; the mass percentage of the phosphoric acid is 98%; the component A and the component B are mixed at the mass ratio of 1 to 1 when the material is used; and the portland cement is 100 parts by weight. The composition disclosed by the invention has good effects in seepage rate, shrinkage rate and hardness.
Description
technical field [0001] The invention relates to an engineering material, in particular to a material for mine reinforcement. Background technique [0002] Coal always accounts for about 70% of my country's primary energy production and consumption structure. With the increase of coal mining depth, the coal is broken and softened. In the process of mine mining, the accidents of sidewalls and roof fall continue to increase, which has seriously affected the mining of the working face. Therefore, it is one of the problems that must be solved in the coal mining process to ensure the stability of the coal rock mass, prevent the roof caving of the working face, and realize stable and high yield and safe production. Coal rock mass grouting reinforcement material is an effective means to solve this problem. It can consolidate the broken coal rock mass with developed cracks into a coal rock mass with better integrity, and can effectively prevent the occurrence of roof caving acciden...
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