Modified calcium carbonate good in flame retardant effect and preparing method of modified calcium carbonate

A calcium carbonate, modified technology, applied in the direction of chemical instruments and methods, fibrous fillers, coatings, etc., can solve the problems of uneven dispersion of high polymers, poor direct application effect, poor affinity, etc., to achieve dispersibility Good, not easy to stick to the mold, good self-lubricating effect

Inactive Publication Date: 2015-12-02
CHIZHOU CELT NANO TECH
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Problems solved by technology

[0002] As a filler for rubber and plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the product, and reduce the cost of the product, but its surface has hydroxyl groups with strong hydrophilicity. It presents a strong alkalinity. This hydrophilic and oleophobic property makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, resulting in two materials. The effect of direct

Method used

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[0012] Specific implementation plan

[0013] The present invention will be described in detail below through specific examples.

[0014] A modified calcium carbonate with good flame retardant effect and a preparation method thereof, prepared from the following parts by weight (kg) of raw materials: calcium carbonate 150, sodium oleate 46, sodium dodecylbenzene sulfonate 0.6, hydrogen carbonate Sodium 2, styrene 6, potassium persulfate 0.04, fumed silica 4, organic bentonite 3, magnesium stearate 3, asbestos fiber 3, antimony trioxide 3, deionized water;

[0015] The modified calcium carbonate with good flame retardant effect and its preparation method according to the present invention are prepared by the following specific steps:

[0016] (1) Dissolve sodium oleate and deionized water to make a 1% sodium oleate aqueous solution, stir it electrically for 10 minutes and raise the temperature to 60°C, add calcium carbonate and stir for 1.5 hours, after stirring, let it stand for 4 hours...

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Abstract

The invention discloses modified calcium carbonate good in flame retardant effect and a preparing method of the modified calcium carbonate. The modified calcium carbonate is characterized by being prepared from, by weight, 100-150 parts of calcium carbonate, 30-50 parts of sodium oleate, 0.3-0.7 part of sodium dodecyl benzene sulfonate, 1-3 parts of sodium bicarbonate, 4-8 parts of styrene, 0.02-0.05 part of potassium persulfate, 3-5 parts of fumed silica, 2-3 parts of organic bentonite, 2-3 parts of magnesium stearate, 2-3 parts of asbestos fiber, 2-4 parts of antimonous oxide and a proper amount of deionized water. Due to the fact that zinc stearate, the asbestos fiber and the antimonous oxide are added, the effects that the calcium carbonate is not likely to stick to a mold and is good in self-lubrication property are enhanced when the calcium carbonate serves as packing, the calcium carbonate is not likely to burn, and the flame retardant performance of a product is improved. The prepared calcium carbonate powder is good in dispersity, not prone to aggregating or settling, good in comprehensive performance, good in applicability when serving as paint, plastic, pigments and other packing and worthy of popularization.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a modified calcium carbonate with good flame-retardant effect and a preparation method thereof. Background technique [0002] As a filler for rubber and plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the product, and reduce the cost of the product, but its surface has hydroxyl groups with strong hydrophilicity. It presents a strong alkalinity. This hydrophilic and oleophobic property makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, resulting in two materials. The effect of direct application is not good, and calcium carbonate is used as a filler, and its acid resistance, smoothness, whiteness and other properties need to be further improved. Therefore, in order to improve the reinforc...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K9/04C08K9/02C08K3/26C09D7/12C09C1/02C09C3/06C09C3/08C09C3/10
Inventor 顾宗军
Owner CHIZHOU CELT NANO TECH
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