CN104087025A - Modified calcium carbonate with enhanced wear resistance and preparing method thereof - Google Patents

Abstract

The invention discloses a modified calcium carbonate with enhanced wear resistance, which is characterized in that it is prepared from the following raw materials in parts by weight: calcium carbonate 85-90, quartz powder 2-3, epoxy resin 5-7, glycerin Triacetate 4-6, nylon 666-8, molybdenum disulfide 3-4, copper oxide 2-3, crushed nut shell 2-3, high wear-resistant carbon black 1-1.5, brown corundum 2-3, turpentine 4- 6. Liquid paraffin 2-4, modified titanium dioxide 3-4; the invention adds wear-resistant lubricants such as high wear-resistant carbon black and molybdenum disulfide, so that the filler itself has self-lubricating property to reduce external friction, so as to achieve wear resistance The effect; adding modified titanium dioxide increases the dispersion performance and compatibility performance, thereby producing a strong binding force without reducing the overall performance of the product. Used in plastics, rubber and paint additives.

Description

Modified calcium carbonate that a kind of wear resistance strengthens and preparation method thereof

Technical field

The present invention relates to industrial filler field, modified calcium carbonate that particularly a kind of wear resistance strengthens 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, large multi-product belongs to the category of polymkeric substance, such as plastics, rubber, tackiness agent, coating etc., and occupy the important market share.

Properties-correcting agent has played vital role to the performance of nano-calcium carbonate and application.For example, 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.Yet, adding of dispersion agent and surface-modifying agent, makes nano-calcium carbonate temperature use window greatly to diminish, and reason is that conventional dispersion agent and coupling agent is at high temperature easy to decompose, cause bubble, cracking, defect, distortion etc., thereby affect outward appearance, resistance toheat and the mechanical property of material.

Summary of the invention

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

In order to realize object of the present invention, the present invention passes through following scheme implementation:

The modified calcium carbonate that wear resistance strengthens, is made by the raw material of following weight part: calcium carbonate 85-90, silica powder 2-3, epoxy resin 5-7, Vanay 4-6, nylon 666-8, molybdenumdisulphide 3-4, cupric oxide 2-3, pulverizing nutshell 2-3, high wear-resistant carbon black 1-1.5, brown corundum 2-3, turps 4-6, whiteruss 2-4, modifying titanium dioxide 3-4;

Described modifying titanium dioxide is made by the raw material of following weight part: aluminium hydroxide 2-4, nano titanium oxide 50-60, silicon carbide 4-6, methyl methacrylate 5-7, antimonous oxide 3-4, terephthalic acid 3-4, dioctyl maleate 3-5, ethylene glycol 5-6, water 50-60; First preparation method adds methyl methacrylate, nano titanium oxide, aluminium hydroxide, ethylene glycol, water to stir, form suspension, at 45-50 ℃, dry to water content 2-3%, then add immediately terephthalic acid, dioctyl maleate mix and blend 25-35 minute, then add all the other remaining components, under 1200-1500 rev/min of condition, stir, at 50-60 ℃, dry, be ground into ultrafine powder and get final product.

The modified calcium carbonate that a kind of wear resistance of the present invention strengthens, by following concrete steps, made:

(1) calcium carbonate, silica powder, epoxy resin, nylon 66, molybdenumdisulphide, cupric oxide are added in high-speed kneading machine, be warming up between 70-80 ℃, insulated and stirred half an hour, continue to add except modifying titanium dioxide, pulverize all the other remaining components nutshell, continue to be warming up to 110-130 ℃, be incubated and pour out after 15-20 minute;

(2) by adding appropriate deionized water and pulverize nutshell pouring out material while hot, stir and grind 2-3 hour, form 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 adds the wear-resisting lubricants such as high wear-resistant carbon black and molybdenumdisulphide, make filler self there is self lubricity to reduce external friction power, thereby reach wear-resisting effect; Add modifying titanium dioxide, increased dispersing property and compatibility performance, thereby produce very strong bonding force, can not reduce the over-all properties of product.For plastics, rubber and paint additive etc.

Specific embodiments

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

The modified calcium carbonate that wear resistance strengthens, by following weight part (kilogram) raw material make: calcium carbonate 85, silica powder 2, epoxy resin 5, Vanay 4, nylon 666, molybdenumdisulphide 3, cupric oxide 2, pulverizing nutshell 2, high wear-resistant carbon black 1, brown corundum 2, turps 4, whiteruss 2, modifying titanium dioxide 3;

Described modifying titanium dioxide by following weight part (kilogram) raw material make: aluminium hydroxide 2, nano titanium oxide 50, silicon carbide 4, methyl methacrylate 5, antimonous oxide 3, terephthalic acid 3, dioctyl maleate 3, ethylene glycol 5, water 50; First preparation method adds methyl methacrylate, nano titanium oxide, aluminium hydroxide, ethylene glycol, water to stir, form suspension, at 45-50 ℃, dry to water content 2-3%, then add immediately terephthalic acid, dioctyl maleate mix and blend 25-35 minute, then add all the other remaining components, under 1200-1500 rev/min of condition, stir, at 50-60 ℃, dry, be ground into ultrafine powder and get final product.

The modified calcium carbonate that a kind of wear resistance of the present invention strengthens, by following concrete steps, made:

(1) calcium carbonate, silica powder, epoxy resin, nylon 66, molybdenumdisulphide, cupric oxide are added in high-speed kneading machine, be warming up between 70-80 ℃, insulated and stirred half an hour, continue to add except modifying titanium dioxide, pulverize all the other remaining components nutshell, continue to be warming up to 110-130 ℃, be incubated and pour out after 15-20 minute;

(2) by adding appropriate deionized water and pulverize nutshell pouring out material while hot, stir and grind 2-3 hour, form 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.

Performance Detection to 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 the good calcium carbonate of modification and unmodified water-ground limestone are joined in polyvinyl chloride resin in 15% ratio respectively, make sample, test respectively both mechanical properties, comparing result sees the following form:

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

Claims (2)

1. the modified calcium carbonate that a wear resistance strengthens, it is characterized in that, by the raw material of following weight part, made: calcium carbonate 85-90, silica powder 2-3, epoxy resin 5-7, Vanay 4-6, nylon 66 6-8, molybdenumdisulphide 3-4, cupric oxide 2-3, pulverizing nutshell 2-3, high wear-resistant carbon black 1-1.5, brown corundum 2-3, turps 4-6, whiteruss 2-4, modifying titanium dioxide 3-4;

Described modifying titanium dioxide is made by the raw material of following weight part: aluminium hydroxide 2-4, nano titanium oxide 50-60, silicon carbide 4-6, methyl methacrylate 5-7, antimonous oxide 3-4, terephthalic acid 3-4, dioctyl maleate 3-5, ethylene glycol 5-6, water 50-60; First preparation method adds methyl methacrylate, nano titanium oxide, aluminium hydroxide, ethylene glycol, water to stir, form suspension, at 45-50 ℃, dry to water content 2-3%, then add immediately terephthalic acid, dioctyl maleate mix and blend 25-35 minute, then add all the other remaining components, under 1200-1500 rev/min of condition, stir, at 50-60 ℃, dry, be ground into ultrafine powder and get final product.

2. the modified calcium carbonate that a kind of wear resistance strengthens according to claim 1, is characterized in that, by following concrete steps, is made:

(1) calcium carbonate, silica powder, epoxy resin, nylon 66, molybdenumdisulphide, cupric oxide are added in high-speed kneading machine, be warming up between 70-80 ℃, insulated and stirred half an hour, continue to add except modifying titanium dioxide, pulverize all the other remaining components nutshell, continue to be warming up to 110-130 ℃, be incubated and pour out after 15-20 minute;

(2) by adding appropriate deionized water and pulverize nutshell pouring out material while hot, stir and grind 2-3 hour, form 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.