Modified polyurethane grouting material and preparation method and application thereof
A grouting material, polyurethane technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low strength of the consolidated body, complicated operation process, pollution of the environment, etc., and achieve high strength and penetration of the foamed consolidated body. Good performance and low cost
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[0015] The present invention provides a method for preparing a modified polyurethane grouting material, wherein the method includes the following steps:
[0016] Step 1: contact and mix diluent, isocyanate compound, water and Portland cement to obtain component A;
[0017] Contact and mix the polymerized alcohol, foam stabilizer and catalyst to obtain component B;
[0018] Step 2: Contact and mix component A and component B.
[0019] Among them, in step 1, the process of contact mixing to obtain component A can be carried out according to the following steps: firstly, the diluent is contacted and mixed with the isocyanate compound, and then the mixture 1 is contacted with water to obtain the mixture 2, and then the mixture 2 is mixed with silicon Component A is obtained by contacting with salt cement.
[0020] In step 1, the process of contacting and mixing to obtain component B can be carried out according to the following steps: firstly, the polymeric alcohol is contacted and mixed w...
Example Embodiment
[0050] Example 1-9
[0051] Examples 1-9 are used to illustrate the preparation method of the modified polyurethane grouting material provided by the present invention.
[0052] According to the content of the components listed in Table 2, the modified polyurethane grouting material was prepared.
[0053] In the mixing tank, first add the diluent, then add the isocyanate compound and mix well, then add water and mix well, finally add Portland cement and mix well under normal pressure to prepare component A.
[0054] In the mixing kettle, first add the polyalcohol, then add the foam stabilizer and stir evenly, and finally add the catalyst and stir and mix evenly to obtain component B.
[0055] Mix component A and component B uniformly to obtain a modified polyurethane grouting material.
[0056] Table 2
[0057]
[0058] In Examples 1-9, the specific selection of each component is as follows:
[0059] The selection of each component in Examples 1-5 is as follows: diluent (butyl acetate), is...
Example Embodiment
[0060] Example 6
[0061] The modified polyurethane grouting material was prepared according to the method of Example 1, except that the diluent was mixed with butyl acetate and dichloromethane in a weight ratio of 17:23.
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