Method for modification of nano calcium carbonate for flame-retardant PVC plates and application

A nano-calcium carbonate, flame-retardant technology, applied in the field of calcium carbonate, can solve the problems of easy agglomeration of nano-calcium carbonate, and achieve the effects of good stability, improved mechanical properties, and strong antibacterial and antibacterial properties

Inactive Publication Date: 2018-11-13
钦州市宝业坭兴陶厂
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that existing nano-calcium carbonate is easy to agglomerate, the present inven

Method used

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  • Method for modification of nano calcium carbonate for flame-retardant PVC plates and application

Examples

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Effect test

Embodiment 1

[0036]A modification method of nano-calcium carbonate for flame-retardant PVC plates, comprising the steps of:

[0037] (1) Put quicklime and 50-60°C hot water into the digestion reactor according to the mass ratio of 1:5 to carry out digestion reaction, remove impurities, stand and age for 48 hours, and dilute to a specific gravity of 1.060 to obtain lime emulsion;

[0038] (2) Transport the lime emulsion to the carbonation reaction tower, feed carbon dioxide for carbonization reaction, add crystal form control agent and dispersant during the carbonization process, carbonize to pH 7, stop feeding carbon dioxide, and control calcium carbonate The specific surface area is 32.4m 2 / g, get nano-calcium carbonate slurry; Described crystal formation control agent is made up of 1:2 phytic acid and tartaric acid by mass ratio, and its add-on is 1.5% of calcium carbonate dry basis weight; Described dispersant is made up of mass ratio: 2:1 composition of polyoxyethylene glyceryl ether...

Embodiment 2

[0048] A modification method of nano-calcium carbonate for flame-retardant PVC plates, comprising the steps of:

[0049] (1) Put quicklime and 55°C hot water into the digestion reactor according to the mass ratio of 1:4 to carry out digestion reaction, remove impurities, stand and age for 36 hours, and dilute to a specific gravity of 1.065 to obtain lime emulsion;

[0050] (2) Transport the lime emulsion to the carbonation reaction tower, feed carbon dioxide for carbonization reaction, add crystal form control agent and dispersant during the carbonization process, carbonize to pH 7.5, stop feeding carbon dioxide, and control calcium carbonate The specific surface area is 28.3m 2 / g, get nano-calcium carbonate slurry; Described crystal formation control agent is made up of 1:2 phytic acid and tartaric acid by mass ratio, and its add-on is 2% of calcium carbonate dry basis weight; Described dispersant is made up of mass ratio: 1:1 polyoxyethylene glyceryl ether monostearate and...

Embodiment 3

[0060] A modification method of nano-calcium carbonate for flame-retardant PVC plates, comprising the steps of:

[0061] (1) Put quicklime and 50°C hot water into the digestion reactor according to the mass ratio of 1:5 to carry out digestion reaction, remove impurities, stand and age for 36 hours, and dilute to a specific gravity of 1.060 to obtain lime emulsion;

[0062] (2) Transport the lime emulsion to the carbonation reaction tower, feed carbon dioxide for carbonization reaction, add crystal form control agent and dispersant during the carbonization process, carbonize to pH 8, stop feeding carbon dioxide, and control the calcium carbonate The specific surface area is 36.9m 2 / g, get nano-calcium carbonate slurry; Described crystal formation control agent is made up of 1:1 phytic acid and tartaric acid by mass ratio, and its add-on is 1.5% of calcium carbonate dry basis weight; Described dispersant is made up of mass ratio: 2:1 composition of polyoxyethylene glyceryl eth...

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Abstract

The invention discloses a method for modification of nano calcium carbonate for flame-retardant PVC plates and application. The method includes: adding dispersive and crystal form control agents in acarbonation process, wherein the crystal form control agent is composed of phytic acid and tartaric acid, and the dispersive agent is composed of polyoxyethylene glycerol ether monostearate and sulfosuccinate hydrogenated castor oil; modifying through rapeseed fatty acid alkyl alcohol amide borate and perfluoro-heptyl propyl polyhedral oligomeric silsesquioxane to obtain modified nano calcium carbonate excellent in dispersity, flame retardance, weather resistance and mechanical performance. The modified nano calcium carbonate can be applied to PVC plate filling to endow the plates with advantages of high strength, high impact resistance, high flame retardance, heat resistance, long service life and the like.

Description

technical field [0001] The invention relates to the technical field of calcium carbonate, in particular to a method for modifying nano-calcium carbonate for flame-retardant PVC plates and an application thereof. Background technique [0002] Nano-calcium carbonate is a very important new functional nano-scale filler with excellent performance in industrial calcium carbonate. It can not only increase the filling capacity and reduce the cost, but also improve the surface color of the filled product and improve the comprehensive mechanical properties of the product. Calcium carbonate is an important inorganic chemical product, which is widely used in rubber, plastic, paper, composite board, paint, ink, medicine, automobile paint, cosmetics, food and other industries. However, due to the smaller the particle size of nano-calcium carbonate particles and the more atoms on the surface, the higher the surface energy, the stronger the adsorption, and the mutual agglomeration of each ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/08C08L97/02C08L83/12C08L71/02C08L23/06C08K13/06C08K9/04C08K9/00C08K3/26C08K7/12C08K3/22C08J9/10
CPCC08J9/0061C08J9/0066C08J9/0085C08J9/009C08J9/103C08J2203/04C08J2327/06C08J2423/08C08J2497/02C08K7/14C08K9/00C08K9/04C08K9/08C08K13/06C08K2003/2213C08K2003/265C08K2201/011C08K2201/014
Inventor 施宝业
Owner 钦州市宝业坭兴陶厂
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