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Surface modified nano calcium carbonate and polychloroethylene plastisol thereof

A technology of surface modification of nanometer and nanometer calcium carbonate, applied in the direction of fibrous filler, dyed polymer organic compound treatment, etc., can solve the problems of poor bonding performance between nanometer calcium carbonate and PVC resin, and poor dispersion performance of nanometer calcium carbonate. , to achieve the effect of reducing material cost, increasing contact rate and reducing dosage

Inactive Publication Date: 2012-05-09
海宁市盐官工业投资有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor binding performance between existing nano calcium carbonate and PVC resin, to provide a surface-modified nano calcium carbonate with strong binding force with PVC resin, and to solve the problem of nano calcium carbonate in organic matter. The problem of poor dispersion performance

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0011] Take 100g CaO, add 900ml deionized water, heat to 65°C, and pass in CO with a volume fraction of 35% under full stirring 2 , the speed is 4L / min, after the carbonization of 80min is completed, the ventilation is stopped, and 4g of carboxyl-terminated polyamide resin (formed by condensation of stearic acid dimer and diethylenetriamine) with an acid value of 120±20mgKOH / g ) into the above system, continue stirring for 60 min, place at room temperature for 350 min, filter, and dry at 60° C. to obtain surface-modified nano-calcium carbonate with an average primary particle diameter of about 70 nm.

[0012] Add the surface-modified nano-calcium carbonate of this embodiment into the automotive PVC plastisol formulation, and stir evenly at room temperature to obtain a finished PVC plastisol. The composition and content of PVC plastisol are: PVC resin (model: E5 / 65C, produced by Vinnolit Company) accounts for 15wt%, filler (1000 mesh ordinary calcium carbonate, produced by Guan...

Embodiment 2

[0014] Except changing 4g carboxy-terminated polyamide resin into 8g in embodiment 1, all the other are identical with embodiment 1.

Embodiment 3

[0016] Change the carboxyl-terminated polyamide resin in Example 1 into the carboxyl-terminated polyamide resin (the dimer of stearic acid and the ratio of diethylenetriamine can be adjusted to obtain the present embodiment) at 160 ± 20mgKOH / g acid value The carboxyl-terminated polyamide resin of example acid value), all the other are identical with embodiment 1.

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Abstract

The invention provides nano calcium carbonate with surface modification and polyvinyl chloride plastic sol thereof. Calcium oxide and carbon dioxide gas are used as raw material to synthesize the nano calcium carbonate; and after carbonizing reaction, the nano calcium carbonate is further subjected to surface modification treatment by taking carboxyl end group amilan polyamide resin as surface modifier, wherein the resin is prepared by condensation of fatty group polyprotic acid and fatty group polybasic amine, and the acid value is controlled between 50 and 500mgKOH / g. The invention also provides the polyvinyl chloride plastic sol added with the nano calcium carbonate, which comprises the following components by weight percentage: 10 to 25 percent of polyvinyl chloride resin, 0.2 to 5 percent of stabilizer, 20 to 45 percent of plasticizer, 0.2 to 8 percent of drying agent, 20 to 50 percent of common calcium carbonate filler, and 10 to 40 percent of nano calcium carbonate. Compared with the prior plastic sol, the polyvinyl chloride plastic sol, after solidification by a coating film, greatly improves impact resistance, and has good, anti-sag performance and adhesive force to electrophoresis of the polyvinyl chloride plastic sol.

Description

【Technical field】 [0001] The invention relates to a nano calcium carbonate and polyvinyl chloride plastisol, in particular to a surface-modified nano calcium carbonate and a polyvinyl chloride plastisol using the component. 【Background technique】 [0002] Nano-calcium carbonate refers to calcium carbonate with a particle size between 1-100 nanometers, which can be used as a filler or reinforcing agent for coatings, plastics, rubber, polymer resins, etc. to improve product performance. Usually the surface of nano-calcium carbonate particles is hydrophilic and oleophobic, and nano-calcium carbonate without surface modifier is easy to agglomerate, its dispersion in organic matter is poor, and its binding performance with organic matter is not good, so surface modification is required to enhance Its combination performance with organic matter, and prior art mainly adopts fatty acid or resin acid as the surface modifier of nano-calcium carbonate. CN1400167A discloses a kind of n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/02C09C3/10
Inventor 谭伟华
Owner 海宁市盐官工业投资有限公司
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