Method for preparing hydrophobic nanometer hydrotalcite

A nano hydrotalcite and hydrophobic technology, applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of unsatisfactory stabilization effect of composite stabilizer, limitation of hydrotalcite application effect, difficulty in uniform mixing, etc., and achieve a good initial stage Good coloring property, good stabilizing effect, good hydrophobic effect
CN101538019AInactive Publication Date: 2009-09-23慧科高新科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
慧科高新科技股份有限公司
Publication Date
2009-09-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing hydrophobic nanometer hydrotalcite. The hydrophobic nanometer hydrotalcite with Mg<2+> / Al<3+> of which the molar ratio is 2-3:1 is prepared by adopting a coprecipitation method by adding eunatrol, and leached by using methylbenzene under the action of a phase transfer agent. The hydrophobic nanometer hydrotalcite can be mixed with calcium stearate and zinc stearate and then is added with a lubricating agent, a surfaction agent and an auxiliary stabilizing agent to prepare a composite heat stabilizing agent for hydrophobic nanometer hydrotalcite base PVC. The hydrophobic nanometer hydrotalcite prepared by the method has better hydrophobicity and good compatibility with PVC matrixes, can be used as a stabilizing agent for processing plastics such as PVC, and the like and has the characteristics of no easy separation and good stabilizing effect. The addition of the hydrophobic nanometer hydrotalcite can reduce the balancing torque, improve the processing performance and reduce the cost.
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Description

technical field

[0001] The invention relates to the preparation of a hydrophobic nanometer hydrotalcite which is used for polyvinyl chloride and has long-term thermal stability. Background technique

[0002] As we all know, PVC is easy to decompose under processing temperature conditions, and a stabilizer must be added to make it process smoothly. In addition, when polyvinyl chloride is heated or exposed to ultraviolet radiation, it will also cause polymer degradation and de-HCl. Therefore, the use and processing of PVC must use stabilizers. Stabilizer is a chemical additive that can inhibit the degradation and discoloration of PVC caused by heat and light during processing and use. Stabilizers can be divided into five categories according to their chemical structures: base lead salt stabilizers, metal soaps, organotin compounds, organic stabilizers and composite stabilizers.

[0003] Due to the advantages of easy-to-obtain raw materials, simple production process, low pr...

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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