Dosage Determination of Aluminate Coupling Agent Modifying Nano-Calcium Carbonate

Sun, Qiu Yan; Sun, Chao

doi:10.4028/www.scientific.net/amr.347-353.214

Cited by 2 publications

(5 citation statements)

References 2 publications

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“…The smaller the oil absorption value of the product, the better the modification effect and the better its dispersibility. 21…”

Section: Methodsmentioning

confidence: 99%

“…The higher the degree of activation, the better the modification effect and the better the dispersion. 21…”

Section: Methodsmentioning

confidence: 99%

“…The smaller the oil absorption value of the product, the better the modification effect and the better its dispersibility. 21 2. Determination of degree of activation: 1 g of the modified nano-barium sulfate powder was placed in a partition funnel (size: 125 mL) containing 100 mL of water.…”

Section: Product Characterizationmentioning

confidence: 99%

“…The higher the degree of activation, the better the modification effect and the better the dispersion. 21 3. Thermogravimetric-differential thermal analysis:…”

Section: Product Characterizationmentioning

confidence: 99%

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A study on the modification of nano-barium sulfate using a grafting method

Liu,

Li,

2023

Journal of Chemical Research

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In this paper, the wet modification method is compared with the grafting method to modify nano-barium sulfate. The effects of the modification method, the modification time, the modifier dosage, the modification temperature, and other factors on the degree of activation of modified nano-barium sulfate are investigated to solve the nano-barium sulfate agglomeration problems and to make it a suitable process for industrial production. Thermogravimetric analysis, infrared spectroscopy, and scanning electron microscopy are used to characterize the morphology and encapsulation of modified nano-barium sulfate. The grafting method is used to modify nano-barium sulfate with a modification time of 120 min, a modifier dosage of 27%, and a modification temperature of 80 °C. From the experimental results, a hydrophobic nano-barium sulfate in powder form with 76.86% activation degree and 77.41% oil absorption value is obtained.

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“…The smaller the oil absorption value of the product, the better the modification effect and the better its dispersibility. 21…”

Section: Methodsmentioning

confidence: 99%

“…The higher the degree of activation, the better the modification effect and the better the dispersion. 21…”

Section: Methodsmentioning

confidence: 99%

Section: Product Characterizationmentioning

confidence: 99%

“…The higher the degree of activation, the better the modification effect and the better the dispersion. 21 3. Thermogravimetric-differential thermal analysis:…”

Section: Product Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

A study on the modification of nano-barium sulfate using a grafting method

Liu,

Li,

2023

Journal of Chemical Research

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“…Therefore, to improve the application potential of CaCO 3 in industries, it is necessary to modify the surface of CaCO 3 to improve its affinity and dispersion stability in hydrophobic polymers. The surface of CaCO 3 is commonly modified with hydrophobic surfactants [ 7 ], such as silane coupling agents [ 8 , 9 ], titanate coupling agents [ 10 ], aluminate coupling agents [ 11 ], fatty acids [ 12 ], etc. However, the modification performance is still expected to be improved to achieve better dispersion and compatibility in the polymer matrix and widen the potential functionalization of CaCO 3 [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of CaCO3 by Ultrasound-Assisted Titanate and Silane Coupling Agents

Cheng,

Yang,

Xie

et al. 2023

Materials

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Calcium carbonate (CaCO3) is a widely used inorganic powder, but its industrial applications are limited by its hydrophilicity and oleophobicity. Surface modification of CaCO3 can improve its dispersion and stability in organic materials and further improve its potential value. In this study, CaCO3 particles were modified with silane coupling agent (KH550) and titanate coupling agent (HY311) combined with ultrasonication. The oil absorption value (OAV), activation degree (AG), and sedimentation volume (SV) were employed to evaluate the modification performance. The results showed that the modification effect of HY311 on CaCO3 was better than that of KH550, and ultrasonic treatment played an auxiliary role. Based on response surface analysis, the optimal modification conditions were determined as follows: the HY311 dosage was 0.7%, the KH550 dosage was 0.7%, and ultrasonic time was 10 min. The OAV, AG, and SV of modified CaCO3 under these conditions were 16.65 g DOP/100 g, 99.27%, and 0.65 mL/g, respectively. The SEM, FTIR, XRD and thermal gravimetric analyses indicated successful coating of HY311 and KH550 coupling agents on the surface of CaCO3. The optimization of the dosages of two coupling agents and ultrasonic time improved the modification performance significantly.

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Dosage Determination of Aluminate Coupling Agent Modifying Nano-Calcium Carbonate

Cited by 2 publications

References 2 publications

A study on the modification of nano-barium sulfate using a grafting method

A study on the modification of nano-barium sulfate using a grafting method

Surface Modification of CaCO3 by Ultrasound-Assisted Titanate and Silane Coupling Agents

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