Composition of calcium carbonate and organic elastomer and preparation method thereof

A calcium carbonate and elastomer technology, applied in the field of rubber products, can solve problems such as affecting the performance of the composition and being difficult to eliminate, and achieve the effects of good physical and mechanical properties, improved tensile strength, and improved mechanical properties

Inactive Publication Date: 2012-01-18
SHANGHAI HUAMING HI TECH GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned preparation method can obtain an organic-inorganic composition with a certain particle size, alkali metal salt or inorganic acid is used as a coagulant, and a variety of auxiliary agents are used, which are difficult to eliminate in the composition product and affect the use of the composition. performance

Method used

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  • Composition of calcium carbonate and organic elastomer and preparation method thereof
  • Composition of calcium carbonate and organic elastomer and preparation method thereof
  • Composition of calcium carbonate and organic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Calcium carbonate raw material preparation:

[0035] According to the method described in patent document CN 1631789A instruction manual 3rd page~4th page step (1)~(3), solid content is the calcium carbonate suspension of 6wt%, and the average particle diameter of calcium carbonate particle recorded by specific surface area method is 30nm.

[0036] Composition preparation:

[0037] Take 1.20kg of calcium carbonate suspension and put it into a 2L reactor, stir at 400r / min and heat up to 50°C, then add 0.44kg of SBR-1502 styrene-butadiene latex with a solid content of 20wt%, stir and mix, keep warm for 10min, filter, After dehydration, the filter cake was dried in an oven at 120° C. for 2 hours to obtain the composition of the present invention. The particle distribution of the obtained composition is shown in Table 1. Wherein: the mass percent is: calcium carbonate 45.0%, organic elastomer particles 55.0%.

[0038] Application test:

[0039] 100g composition is mixed...

Embodiment 2

[0046] Calcium carbonate raw material preparation:

[0047] According to the same method of embodiment 1, the difference is that the average particle diameter of calcium carbonate is 55nm, and the solid content of calcium carbonate suspension is 11.6wt%.

[0048] Composition preparation:

[0049]Take 1.50kg of calcium carbonate suspension and place it in a 2L reactor, stir at 550r / min and heat up to 60°C, then add 0.18kg of Acronal S400 acrylic latex with a solid content of 55wt%, stir and mix, keep warm for 20min, filter and dehydrate, The composition of the present invention was obtained after the wet material was spray-dried (outlet temperature of tail gas was 85° C.), and the particle distribution of the obtained composition is shown in Table 1. Wherein: the mass percentage is: 63.7% of calcium carbonate, 36.3% of organic elastomer particles.

[0050] Application test:

[0051] The 30g composition and 200g grades are PVC powder of SG5, 8g composite lead salt stabilizer,...

Embodiment 3

[0057] Calcium carbonate raw material preparation:

[0058] According to the same method of embodiment 1, the difference is that the average particle diameter of calcium carbonate is 87nm, and the solid content of calcium carbonate suspension is 10.4wt%.

[0059] Composition preparation:

[0060] Put 1.00kg of calcium carbonate suspension into a 2L reactor, stir at 800r / min and heat up to 90°C. Then add 0.52 kg of CRL40-Gx chloroprene latex with a solid content of 5 wt%, cool down and unload after being incubated for 30 minutes, filter and dehydrate, and put the filter cake into a 60°C oven for drying for 2 hours to obtain the composition of the present invention. The particle distribution is shown in Table 1. Wherein: the mass percentage is: calcium carbonate 80.0%, organic elastomer particle 20.0%.

[0061] Application test:

[0062] Heat 200g of Tepco 70# asphalt at 150°C until it flows completely, then add 10g of the composition, stir at a low speed for 20 minutes, the...

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Abstract

The invention provides a composition of calcium carbonate and organic elastomer and a preparation method thereof. The composition of calcium carbonate and organic elastomer includes ingredients of, by weight, 45-95% of calcium carbonate and 5-55% of organic elastomer particle. A preparation technology of the invention is simple. A filler of calcium carbonate itself is used as a separant and a flocculating agent, and the composition has no impurity, so as to substantially lower costs and facilitate industrialization. The composition has good physical mechanical property, good fluidity and storage stability, and can be widely applied to fields of rubber product, adhesive and polymer modification to enhance or improve comprehensive performances of a matrix material. For instance, the composition can be used in a rubber product to substantially enhance mechanical properties, in a friction material as a phenolic aldehyde adhesive improving component to substantially improve flexural modulus of the friction material, and in polymer modification to enhance and toughen polyvinyl chloride, enhance high and low temperature resistance performance of asphalt, improve tensile strength, elongation and impact intensity of phenolic resin.

Description

technical field [0001] The invention relates to a superfine calcium carbonate and organic elastomer composition and a preparation method thereof, which can be applied to the fields of rubber products, adhesives, polymer modification and the like. Background technique [0002] Latex emulsion is a metastable system in which emulsified particles are uniformly dispersed in solution. The diameter of the latex particles formed in the emulsion polymerization is about 50-300nm, and a certain amount of emulsifier molecules are adsorbed on the surface of the latex particles. The latex particles and the emulsifier molecular adsorption layer constitute the electric double layer structure of the emulsion system, so that the latex particles are charged with the same kind of charges, and the same charges repel each other to form a stable emulsion system. In order to make the latex particles agglomerate into powder, it is necessary to destroy the electric double layer structure of the late...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/08C08L9/04C08L9/10C08L11/02C08L23/16C08L33/00C08K3/26
Inventor 陈雪梅张周达吴秋芳马新胜
Owner SHANGHAI HUAMING HI TECH GRP
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