Preparation method of nano calcium carbonate for MS glue

A nano calcium carbonate, calcium hydroxide technology, applied in the direction of calcium carbonate/strontium/barium, chemical instruments and methods, adhesives, etc., can solve the problem of poor compatibility between calcium carbonate and MS glue, poor tensile strength and elongation at break , poor processing performance and other problems, to achieve low oil absorption value, eliminate surface energy, prevent the effect of agglomeration
CN109650431AInactive Publication Date: 2019-04-19卢氏国嵩莱纳米科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
卢氏国嵩莱纳米科技有限公司
Publication Date
2019-04-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of nano calcium carbonate for MS glue, which comprises the following steps: removing impurities from calcium hydroxide (Ca (OH) 2) slurry obtained after the digestion reaction of quicklime (CaO) and water (H2O), preserving heat and aging, adding a crystal form control agent, performing primary carbonization synthesis reaction with the washed kiln gas containing carbon dioxide (CO2), adding a post-treatment agent, aging for a certain time, performing secondary carbonization synthesis reaction with the washed kiln gas containing carbon dioxide (CO2) to obtain calcium carbonate (CaCO3) cooked slurry, adding a modifier into the cooked slurry, performing filter pressing dehydration, drying, crushing and grading after the reaction is finished to obtain the nano calcium carbonate for MS glue. The nano calcium carbonate crystal prepared by the method is a standard cube, and the crystal is mono-disperse, and the average particle diameter is only 100-150nm, and the specific surface area is 16-18m <2 > / g, and the nano calcium carbonate crystal is used for MS glue, and the thixotropy is good, and the extrusion property is good, and the storage stability is good, and the surface finish after gluing is good, and the tensile strength is high, and the elongation is high and the bonding property is also good. The preparation method of nano calcium carbonate for MS glue has the advantages of simple and feasible process, low cost, low price and better economic benefit.
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Description

Technical field

[0001] The invention relates to the technical field of preparation of nano calcium carbonate, in particular to a preparation method of nano calcium carbonate for MS glue. Background technique

[0002] MS polymer is a cross-linked polymer based on silane-terminated polyether. MS polymer-based products do not contain silicone components and solvents, and do not contain polyurethane groups. Most of the formulations are odorless and environmentally friendly. The inherent elasticity of MS adhesives and sealants can absorb and compensate for dynamic loads, uniformly transfer forces, and prevent materials from overwhelming. Early fatigue, MS-based materials can achieve bonding between multiple substrates. The typical feature is that no surface treatments, such as primers, are required. MS polymers can be cross-linked or cured through continuous exposure to moisture. The moisture mainly comes from the air or the substrate itself. SPUR is the abbreviation for silane-ter...

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
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