CN104387801A - Modified calcium carbonate with enhanced anti-aging effect and preparation method thereof - Google Patents

Abstract

Disclosed modified calcium carbonate with enhanced anti-aging effect is characterized by being prepared from the following raw materials in parts by weight: 90-95 parts of calcium carbonate, 1-2 parts of anti-ageing agent NBC, 6-8 parts of nitrile rubber, 5-6 parts of PVC waste material, 2-3 parts of calcined loess powder, 1-2 parts of 2,6-d-tert-butyl-4-methylphenol, 2-3 parts of tri-hexyl tri-meta-benzoate, 1-2 parts of tetramethylthiuram disulfide, 1-1.5 parts of tung oil, 1-2 parts of vegetable wax, and 3-4 parts of modified titanium dioxide. 2,6-d-tert-butyl-4-methylphenol and other anti-ageing agents and multiple high-molecular polymers are added for coating, the modified calcium carbonate is large in strength and good in binding force, and is increased in dispersing effect by adding modified titanium dioxide. The modified calcium carbonate is reasonable in formula, simple in production technology and low in cost, and is suitable for producing various industrial auxiliary agents.

Description

Modified calcium carbonate that a kind of antiageing effect strengthens and preparation method thereof

Technical field

The present invention relates to industrial filler field, modified calcium carbonate of particularly a kind of antiageing effect enhancing and preparation method thereof.

Background technology

Calcium carbonate is a kind of very important functional inorganic filling, is widely used in the industrial circles such as plastics, rubber, coating and papermaking.In the Application Areas of calcium carbonate, most products belongs to the category of polymkeric substance, such as plastics, rubber, tackiness agent, coating etc., and occupies the important market share.The performance and application of properties-correcting agent to nano-calcium carbonate serves vital role.Such as, dispersion agent add the reunion that can reduce nano particle, improve dispersed; Adding of surface-modifying agent can improve the consistency of nano-calcium carbonate in polymeric system.As can be seen here, dispersion agent and surface-modifying agent are vital for the application of nano-calcium carbonate.But, adding of dispersion agent and surface-modifying agent, make nano-calcium carbonate temperature use window greatly to diminish, reason is that conventional dispersion agent and coupling agent are at high temperature easy to decompose, cause bubble, cracking, defect, distortion etc., thus affect the outward appearance of material, resistance toheat and mechanical property.Change the performance of traditional calcium carbonate product, improving its application performance to meet the needs of novel material, development of new techniques, is calcium carbonate industry urgent problem.

Summary of the invention

The object of this invention is to provide modified calcium carbonate of a kind of antiageing effect enhancing and preparation method thereof.

In order to realize object of the present invention, the present invention is by following scheme implementation:

The modified calcium carbonate that a kind of antiageing effect strengthens, be made up of the raw material of following weight part: calcium carbonate 90-95, antioxidant NBC 1-2, paracril 6-8, PVC waste powder 5-6, calcined loess powder 2-3,2,6 ditertiary butyl p cresol 1-2, the own ester 2-3 of tri trimellitate, tetramethyl-thiuram disulfide 1-2, tung oil 1-1.5, vegetable wax 1-2, modifying titanium dioxide 3-4;

Described modifying titanium dioxide is made up of the raw material of following weight part: nano titanium oxide 50-60, magnesium hydroxide 2-4, ethyl cellulose 4-6, n-butyl acrylate 5-7, silica powder 3-4, polyisobutene 3-4, Synolac 3-5, Terpineol 350 2-4, water 50-60; Preparation method be first add n-butyl acrylate, nano titanium oxide, magnesium hydroxide, ethyl cellulose, water stirs, form suspension, dry at 45-50 DEG C to water content 2-3%, then polyisobutene, Synolac mix and blend 25-35 minute is added immediately, then all the other remaining components are added, stir under 1200-1500 rev/min of condition, dry at 50-60 DEG C, be ground into ultrafine powder and get final product.

The modified calcium carbonate that a kind of antiageing effect of the present invention strengthens, be made up of following concrete steps:

(1) by calcium carbonate, antioxidant NBC, paracril, PVC waste powder, calcined loess powder, 2,6-ditertbutylparacresol adds in high-speed kneading machine, be warming up between 70-80 DEG C, insulated and stirred half an hour, continue to add the own ester of tri trimellitate, tetramethyl-thiuram disulfide, continue to be warming up to 110-130 DEG C, be incubated and pour out after 15-20 minute;

(2) by adding appropriate deionized water and all the other remaining components except modifying titanium dioxide by pouring out material while hot, stirring and grinding 2-3 hour, forming suspension stand-by;

(3) suspension is mixed with modifying titanium dioxide, stir 10-15 minute under 800-1000 rev/min, dry, be ground into ultrafine powder and get final product.

The invention has the beneficial effects as follows: the present invention with the addition of 2, the antiagers such as 6-ditertbutylparacresol and multiple high molecular polymer carry out coated, the calcium carbonate intensity of modification is large, bonding force is good, adds modifying titanium dioxide, adds dispersion effect, the present invention fills a prescription rationally, production technique is simple, and cost is low, is applicable to producing various commercial auxiliaries.

Specific embodiments

Below by specific examples, the present invention is described in detail.

The modified calcium carbonate that a kind of antiageing effect strengthens, be made up of the raw material of following weight part (kilogram): the own ester 2 of calcium carbonate 90, antioxidant NBC 1, paracril 6, PVC waste powder 5, calcined loess powder 2,2,6 ditertiary butyl p cresol 1, tri trimellitate, tetramethyl-thiuram disulfide 1, tung oil 1, vegetable wax 1, modifying titanium dioxide 3;

Described modifying titanium dioxide is made up of the raw material of following weight part (kilogram): nano titanium oxide 50, magnesium hydroxide 2, ethyl cellulose 4, n-butyl acrylate 5, silica powder 3, polyisobutene 3, Synolac 3, Terpineol 350 2, water 50; Preparation method be first add n-butyl acrylate, nano titanium oxide, magnesium hydroxide, ethyl cellulose, water stirs, form suspension, dry at 45-50 DEG C to water content 2-3%, then polyisobutene, Synolac mix and blend 25-35 minute is added immediately, then all the other remaining components are added, stir under 1200-1500 rev/min of condition, dry at 50-60 DEG C, be ground into ultrafine powder and get final product.

The modified calcium carbonate that a kind of antiageing effect of the present invention strengthens, be made up of following concrete steps:

(1) by calcium carbonate, antioxidant NBC, paracril, PVC waste powder, calcined loess powder, 2,6-ditertbutylparacresol adds in high-speed kneading machine, be warming up between 70-80 DEG C, insulated and stirred half an hour, continue to add the own ester of tri trimellitate, tetramethyl-thiuram disulfide, continue to be warming up to 110-130 DEG C, be incubated and pour out after 15-20 minute;

(2) by adding appropriate deionized water and all the other remaining components except modifying titanium dioxide by pouring out material while hot, stirring and grinding 2-3 hour, forming suspension stand-by;

(3) suspension is mixed with modifying titanium dioxide, stir 10-15 minute under 800-1000 rev/min, dry, be ground into ultrafine powder and get final product.

The Performance Detection of modified calcium carbonate of the present invention and ordinary calcium carbonate is compared as follows:

First measure the tap density of the forward and backward calcium carbonate of modification, then join in polyvinyl chloride resin in the ratio of 15% respectively by calcium carbonate good for modification and unmodified water-ground limestone, make sample, the mechanical property respectively both test, comparing result sees the following form:

As can be seen from the above table, the loose bulk density of modified calcium carbonate diminishes, and illustrates that calcium carbonate split fully disperses, and it can also be seen that every mechanical property of modified calcium carbonate is all improved.

Claims (2)

1. the modified calcium carbonate of an antiageing effect enhancing, it is characterized in that, be made up of the raw material of following weight part: calcium carbonate 90-95, antioxidant NBC 1-2, paracril 6-8, PVC waste powder 5-6, calcined loess powder 2-3,2,6 ditertiary butyl p cresol 1-2, the own ester 2-3 of tri trimellitate, tetramethyl-thiuram disulfide 1-2, tung oil 1-1.5, vegetable wax 1-2, modifying titanium dioxide 3-4;

Described modifying titanium dioxide is made up of the raw material of following weight part: nano titanium oxide 50-60, magnesium hydroxide 2-4, ethyl cellulose 4-6, n-butyl acrylate 5-7, silica powder 3-4, polyisobutene 3-4, Synolac 3-5, Terpineol 350 2-4, water 50-60; Preparation method be first add n-butyl acrylate, nano titanium oxide, magnesium hydroxide, ethyl cellulose, water stirs, form suspension, dry at 45-50 DEG C to water content 2-3%, then polyisobutene, Synolac mix and blend 25-35 minute is added immediately, then all the other remaining components are added, stir under 1200-1500 rev/min of condition, dry at 50-60 DEG C, be ground into ultrafine powder and get final product.

2. the modified calcium carbonate of a kind of antiageing effect enhancing according to claim 1, is characterized in that, be made up of following concrete steps:

(1) by calcium carbonate, antioxidant NBC, paracril, PVC waste powder, calcined loess powder, 2,6-ditertbutylparacresol adds in high-speed kneading machine, be warming up between 70-80 DEG C, insulated and stirred half an hour, continue to add the own ester of tri trimellitate, tetramethyl-thiuram disulfide, continue to be warming up to 110-130 DEG C, be incubated and pour out after 15-20 minute;

(2) by adding appropriate deionized water and all the other remaining components except modifying titanium dioxide by pouring out material while hot, stirring and grinding 2-3 hour, forming suspension stand-by;

(3) suspension is mixed with modifying titanium dioxide, stir 10-15 minute under 800-1000 rev/min, dry, be ground into ultrafine powder and get final product.