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A kind of superfine ground calcium carbonate special for latex gloves and its preparation method and application

A technology for heavy calcium carbonate and latex gloves, which is applied in chemical instruments and methods, dyed high-molecular organic compound treatment, dyed low-molecular organic compound treatment, etc. It can solve the problem of fingertip damage, poor suspension and low utilization rate of gloves and other problems, to achieve the effect of improving strength, good suspension, and reducing defective rate

Active Publication Date: 2021-11-12
JIANGXI GUANGYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary heavy calcium carbonate is added to natural latex, which has the disadvantages of poor dispersion, poor suspension, and low utilization rate, and it is easy to cause damage to fingertips of gloves during the dipping process

Method used

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  • A kind of superfine ground calcium carbonate special for latex gloves and its preparation method and application
  • A kind of superfine ground calcium carbonate special for latex gloves and its preparation method and application
  • A kind of superfine ground calcium carbonate special for latex gloves and its preparation method and application

Examples

Experimental program
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Effect test

preparation example Construction

[0027] The invention provides a kind of preparation method of special superfine ground calcium carbonate for latex gloves, it is characterized in that, comprises the following steps:

[0028] Crushing the raw calcite ore to obtain calcium carbonate powder;

[0029] Mix the calcium carbonate powder, low-molecular-weight dispersant, water-soluble high-molecular-weight dispersant and water, and perform ball milling to obtain a ball-milled material; the low-molecular-weight dispersant is sodium acrylate or ethylenediaminetetraacetic acid disodium salt, The water-soluble high molecular weight dispersing aid is one or more of sodium polyacrylate, polyacrylamide, polymaleic anhydride and maleic acid-acrylic acid copolymer;

[0030] Classifying the ball-milled material in a cyclone airflow to obtain ultrafine calcium carbonate powder;

[0031] The ultrafine calcium carbonate powder is flash-dried to obtain dry calcium carbonate powder;

[0032] The dry calcium carbonate powder is mi...

Embodiment 1

[0064] Calcite raw ore (with a calcium carbonate content of 98.5%) is roughly crushed and cleaned, and then crushed once to obtain materials with a diameter of 5-10 cm. The obtained materials are put into an automatic feeder for secondary crushing to obtain materials with a diameter of 5-10 mm calcium carbonate powder;

[0065] Calcium carbonate powder, 0.6% of calcium carbonate powder mass edetate disodium sodium salt, calcium carbonate powder mass 0.9% polyacrylic acid sodium salt and calcium carbonate powder mass 11% water, at 3600r / min Carry out ball milling under rotating speed 60min; Obtain ball milling material;

[0066] The ball-milled material is classified by the secondary cyclone airflow, and the inlet velocity of the ball-milled material and airflow into the cyclone separator is 20-25m / s to obtain ultra-fine calcium carbonate powder;

[0067] After the superfine calcium carbonate powder is flash-dried, the dry calcium carbonate powder is obtained; the dry calcium ...

Embodiment 2

[0084] Similar to Example 1, the difference is that adding 0.7% of the calcium carbonate powder mass of sodium acrylate, 0.8% of the calcium carbonate powder mass of polyacrylamide, and 13% of the calcium carbonate powder mass of water;

[0085]Add 0.7% of calcium carbonate powder mass dispersant (mass ratio of glyceryl monostearate to glyceryl tristearate: 2:5) and 0.8% titanate coupling agent.

[0086] Get five parts of gained superfine ground calcium carbonate, carry out batch sample detection to its whiteness, oil absorption value, specific surface area, activation degree and, moisture and impurity content, gained result is listed in table 5.

[0087] Five batches of test results of table 5 experimental example 2 gained superfine ground calcium carbonate

[0088] 1 2 3 4 5 BaiDu 97.5 97.7 97.8 97.4 97.9 Oil absorption value / mL / 100g 27.5 28 28.2 29.1 28.9 D. 97 / μm

[0089] The superfine heavy calcium carbonate obtained in this embo...

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Abstract

The invention belongs to the technical field of filler preparation, and provides an ultrafine ground calcium carbonate special for latex gloves, a preparation method and application thereof. The low-molecular-weight dispersant and the water-soluble high-molecular-weight dispersing aid of the present invention can realize coating on the surface of calcium carbonate powder under the condition of ball milling, so that the particle size distribution of calcium carbonate powder is uniform; and the surface coating of calcium carbonate is complete , improving its dispersion. The modification treatment of calcium carbonate powder by titanate coupling agent makes the calcium carbonate powder disperse in the state of small particles in low viscosity medium (especially natural latex), does not agglomerate for a long time, has good suspension, and at the same time is compatible with natural latex Latex has good compatibility, which meets the anti-settling requirements of latex gloves for ultra-fine heavy calcium carbonate, can greatly reduce the defective rate of latex gloves, and improve production efficiency.

Description

technical field [0001] The invention relates to the technical field of filler preparation, in particular to an ultrafine ground calcium carbonate special for latex gloves and a preparation method and application thereof. Background technique [0002] Latex gloves are a kind of gloves. They are made of natural latex and other fine additives. They can be used in household, industrial, medical, beauty and other industries. They are necessary hand protection products. In recent years, the price of natural latex has continued to rise, resulting in an increase in the cost of latex products. Calcium carbonate is often added to latex products as a filler to effectively reduce production costs due to its wide source, low price, non-toxicity, little interference to other colors, easy coloring, and large filling volume. However, ultrafine ground calcium carbonate has a large specific surface area and high specific surface energy, and there is a problem of particle agglomeration, so th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/02C09C3/04C09C3/08C09C3/10C08K9/10C08K9/04C08K3/26C08L7/02
CPCC08K3/26C08K9/04C08K9/10C08K2003/265C09C1/021C09C3/006C09C3/041C09C3/08C09C3/10C08L7/02
Inventor 肖毓秀徐永华李海滨彭鹤松吴平飞袁斌程雨欣
Owner JIANGXI GUANGYUAN CHEM