Preparation technology of modified calcium carbonate for plastic

A preparation process and calcium carbonate technology, applied in the field of modified calcium carbonate preparation, can solve the problems of calcium carbonate hydrophilic and oleophobic, poor dispersibility, poor plastic compatibility, etc., and achieve good modification effect, good dispersibility, The effect of improving mechanical properties

Inactive Publication Date: 2017-12-22

广西汇智生产力促进中心有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation process of modified calcium carbonate for plastics, so ...

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Method used

(2) Visible by the data of embodiment 3 and comparative example 1-6, triethanolamine oleic acid soap, dicyclohexyl peroxydicarbonate, trimethylol propane three (3- aziridinyl propionic acid ester), aluminum triacetylacetonate, and molecular sieve catalysts play a synergistic role in the modification of calcium carbonate, making the surface lipophilic and hydrophobic, enhancing the compatibility with plastics, improving the dispersion in plastics, and effectively reducing loose accumulation. Density, improve mechanical properties s...

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Abstract

The invention discloses a preparation technology of modified calcium carbonate for plastic. The modified calcium carbonate for the plastic is prepared from raw materials as follows: calcium carbonate, triethanolamine oleic soap, dicyclohexyl peroxydicarbonate, trimethylolpropanetris(3-aziridinylpropanoate), aluminum acetylacetonate, a catalyst, diethylenetriamine potassium pentacarboxylate, a modifier, di-iso-decylphthalate, hexenyl distearamide, 2-(2'-hydroxy-3',5-di-tert-phenyl)-5-benzotriazole chloride, N-ethyl-5-methyl-2-(1-methyl ethyl)cyclohexanecarboxamide and a stabilizer, and the modified calcium carbonate for the plastic is prepared through steps of surface modification, performance adjustment, crushing, drying and the like. The loose bulk density of modified calcium carbonate is significantly reduced, and modified calcium carbonate powder for the plastic is fully dispersed and has slight aggregation and good dispersity after being added to the plastic.

Technology Topic

DiethylenetriamineBenzotriazole +12

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Examples

Experimental program(4)
Comparison scheme(7)
Effect test(1)

Example Embodiment

[0027] The preparation technology of described modified calcium carbonate, comprises the following steps:

[0028] S1: Grinding the calcium carbonate, passing through a 1000-1500 mesh sieve, and drying at a temperature of 85-90°C until the water content is ≤0.5%, to obtain a calcium carbonate pulverized product;

[0029] S2: Add the crushed calcium carbonate obtained in step S1 into a high-speed mixer, and then add triethanolamine oleic acid soap, dicyclohexyl peroxydicarbonate, trimethylolpropane tris(3-aziridinylpropane) Ester), aluminum triacetylacetonate, molecular sieve catalyst, heated up to 53-68 ° C, and stirred at a high speed of 1300-1500r/min for 40-60min to prepare mixture A;

[0030] S3: Add potassium diethylenetriaminepentacarboxylate, acrylate regulator, diisodecyl phthalate, and hexenyl bisstearamide to the mixture A prepared in step S2, and control the temperature at 70-86 °C, stirring at a high speed of 1000-1200r/min for 30-40min to prepare mixture B;

[0031] S4: Add 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole, N-ethyl-5-methyl to the mixture B prepared in step S3 - 2-(1-methylethyl)cyclohexanecarboxamide, modified bentonite heat stabilizer, control the temperature at 42-55°C, stir at a high speed of 800-1000r/min for 18-35min, and prepare mixture C;

[0032] S5: Pulverize the mixture C prepared in step S4, pass through a 1000-1500-mesh sieve, and dry at a temperature of 46-50°C until the water content is ≤0.4%, so as to obtain modified calcium carbonate.

[0033] The preparation process of the high-performance plastic prepared by using modified calcium carbonate is to fully mix the raw materials and then perform injection molding.

Example Embodiment

[0035] Example 1

[0036] A high-performance plastic prepared by using modified calcium carbonate, which includes the following raw materials in parts by weight: 70 parts of polyvinyl chloride, 32 parts of modified calcium carbonate, 3 parts of nylon, 4 parts of chlorinated paraffin, 5 parts of borax, 2 parts of antistatic agent, 3 parts of mineral oil;

[0037] The modified calcium carbonate, in parts by weight, comprises the following raw materials: 172 parts of calcium carbonate, 5.6 parts of triethanolamine oleic acid soap, 0.1 part of dicyclohexyl peroxydicarbonate, trimethylolpropane three (3- Aziridinyl propionate) 0.7 parts, aluminum triacetylacetonate 0.2 parts, molecular sieve catalyst 0.1 parts, potassium diethylene triamine pentacarboxylate 0.8 parts, acrylate regulator 0.3 parts, diisodecyl phthalate 2 parts, 0.6 parts of hexenyl bis stearamide, 0.6 parts of 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole, N-ethyl-5 - 0.5 part of methyl-2-(1-methylethyl) cyclohexanecarboxamide, 0.3 part of modified bentonite thermal stabilizer.

[0038] The preparation technology of described modified calcium carbonate, comprises the following steps:

[0039] S1: crush calcium carbonate, pass through a 1200-mesh sieve, and dry at a temperature of 88°C until the water content is 0.5%, to obtain crushed calcium carbonate;

[0040] S2: Add the crushed calcium carbonate obtained in step S1 into a high-speed mixer, and then add triethanolamine oleic acid soap, dicyclohexyl peroxydicarbonate, trimethylolpropane tris(3-aziridinylpropane) acid ester), aluminum triacetylacetonate, and molecular sieve catalyst, the temperature was raised to 62°C, and the mixture was stirred at a high speed of 1400r/min for 50min to obtain a mixture A;

[0041] S3: Add potassium diethylenetriaminepentacarboxylate, acrylate regulator, diisodecyl phthalate, and hexenyl bisstearamide to the mixture A prepared in step S2, and control the temperature at 82°C. Stir at a high speed of 1100r/min for 35min to prepare mixture B;

[0042] S4: Add 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole, N-ethyl-5-methyl to the mixture B prepared in step S3 - 2-(1-methylethyl)cyclohexanecarboxamide, modified bentonite heat stabilizer, controlled temperature is 450°C, and stirred at a high speed of 900r/min for 26min to prepare mixture C;

[0043]S5: Pulverize the mixture C prepared in step S4, pass through a 1200-mesh sieve, and dry at a temperature of 48°C until the water content is 0.4%, so as to obtain modified calcium carbonate.

[0044] The preparation process of the high-performance plastic prepared by using modified calcium carbonate is to fully mix the raw materials and then perform injection molding.

Example Embodiment

[0045] Example 2

[0046] A high-performance plastic prepared by using modified calcium carbonate, comprising the following raw materials in parts by weight: 56 parts of polyvinyl chloride, 28 parts of modified calcium carbonate, 2 parts of nylon, 3 parts of chlorinated paraffin, 4 parts of borax, 1.2 parts of antistatic agent, 2.5 parts of mineral oil;

[0047] The modified calcium carbonate, in parts by weight, comprises the following raw materials: 143 parts of calcium carbonate, 4.4 parts of triethanolamine oleic acid soap, 0.1 part of dicyclohexyl peroxydicarbonate, trimethylolpropane three (3- Aziridinyl propionate) 0.5 parts, aluminum triacetylacetonate 0.2 parts, molecular sieve catalyst 0.1 parts, potassium diethylene triamine pentacarboxylate 0.6 parts, acrylate regulator 0.2 parts, diisodecyl phthalate 1.5 parts, 0.4 parts of hexenyl bis stearamide, 0.4 parts of 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole, N-ethyl-5 - 0.3 part of methyl-2-(1-methylethyl) cyclohexanecarboxamide, 0.2 part of modified bentonite thermal stabilizer.

[0048] The preparation technology of described modified calcium carbonate, comprises the following steps:

[0049] S1: crush calcium carbonate, pass through a 1000-mesh sieve, and dry at a temperature of 85°C until the water content is 0.4%, to obtain crushed calcium carbonate;

[0050] S2: Add the crushed calcium carbonate obtained in step S1 into a high-speed mixer, and then add triethanolamine oleic acid soap, dicyclohexyl peroxydicarbonate, trimethylolpropane tris(3-aziridinylpropane) acid ester), aluminum triacetylacetonate, molecular sieve catalyst, heated up to 53°C, and stirred at a high speed of 1300r/min for 60min to prepare mixture A;

[0051] S3: Add potassium diethylenetriaminepentacarboxylate, acrylate regulator, diisodecyl phthalate, and hexenyl bisstearamide to the mixture A prepared in step S2, and control the temperature to 70°C. Stir at a high speed of 1000r/min for 40min to prepare mixture B;

[0052] S4: Add 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole, N-ethyl-5-methyl to the mixture B prepared in step S3 - 2-(1-methylethyl)cyclohexanecarboxamide, modified bentonite heat stabilizer, control the temperature at 42°C, and stir at a high speed of 800r/min for 35min to prepare mixture C;

[0053] S5: Pulverize the mixture C prepared in step S4, pass through a 1000-mesh sieve, and dry at a temperature of 46°C until the water content is 0.4%, so as to obtain modified calcium carbonate.

[0054] The preparation process of the high-performance plastic prepared by using modified calcium carbonate is to fully mix the raw materials and then perform injection molding.

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Classification and recommendation of technical efficacy words

Reduce clumping
Good dispersion

Preparation technology of modified calcium carbonate for plastic

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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