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Modified talcpowder and preparation method thereof

A talcum powder and modification technology, which is applied in the treatment of dyed low molecular weight organic compounds, fibrous fillers, dyed organosilicon compounds, etc. Oil absorption rate, high sedimentation volume, the effect of improving the modification effect

Active Publication Date: 2012-01-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology requires more raw materials, the preparation process is more complicated, and it is easy to cause fluctuations in the quality of modifiers.

Method used

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  • Modified talcpowder and preparation method thereof
  • Modified talcpowder and preparation method thereof
  • Modified talcpowder and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0040] Preparation of polyol laurate

[0041]Preparation of glyceryl monolaurate: Mix 200.0g lauric acid and 92.0g glycerin, add catalyst sodium hydroxide, heat and stir, control the temperature at 200°C, react for 4h, after the reaction is completed, filter to obtain glyceryl monolaurate.

[0042] Preparation of butanediol monolaurate: mix 200.0g lauric acid with 90.0g 1,2-butanediol, add catalyst sodium hydroxide, heat and stir, control the temperature at 210°C, react for 3h, the reaction is completed, filter, In butylene glycol monolaurate.

[0043] Preparation of pentaerythritol monolaurate: Mix 200.0 g of lauric acid and 136.0 g of pentaerythritol, add catalyst sodium hydroxide, heat and stir, control the temperature at 180° C., react for 5 hours, complete the reaction, and filter to obtain pentaerythritol monolaurate.

[0044] Preparation of silicone / polyether copolymer

[0045] The preparation of organosilicon / polyether copolymer A: add 200g of hydrogen-containing sil...

Embodiment 1

[0049] The modified talcum powder is prepared as follows:

[0050] 1) Weigh 1000g of the dried talcum powder material and put it into a temperature-controllable high mixer;

[0051] 2) Weigh 10.0 g of modifier propylene glycol laurate and 10.0 g of silicone / polyether copolymer A;

[0052] 3) Add the weighed modifier evenly into the talcum powder in the high mixer, and stir for 15 minutes at a temperature of 100°C;

[0053] 4) Take out the modified talcum powder.

Embodiment 2

[0055] The modified talcum powder is prepared as follows:

[0056] 1) Weigh 1000g of the dried talcum powder material and put it into a temperature-controllable high mixer;

[0057] 2) Weigh 4.0 g of modifier monolaurin and 6.0 g of silicone / polyether copolymer B;

[0058] 3) Add the weighed modifier evenly into the talcum powder in the high mixer, and stir for 20 minutes at a temperature of 110°C;

[0059] 4) Take out the modified talcum powder.

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Abstract

The invention relates to modified talcpowder and a preparation method thereof. The modified talcpowder comprises 100 mass parts of talcpowder and 0.5 to 2.5 mass parts of modifier, wherein the modifier is a mixture of polyatomic alcohol laurate and organic silicon / polyether copolymer; and the organic silicon / polyether copolymer is alpha,omega-di(trimethylsiloxyl)polydimethyl polymethyl (R-polyoxyethylene polyoxypropylene ether) siloxane, and R is H, alkyl or hydroxyl-containing alkyl. A preparation method for the modified talcpowder comprises the following steps of: loading dried talcpowder materials into a temperature controllable high mixer; weighing the modifier in a mass ratio of the talcpowder to the modifier of 100:(0.5-2.5); mixing the materials, adding the weighed modifier into the high mixer filled with the talcpowder uniformly, and stirring at the temperature of between 80 and 120 DEG C for 12 to 25 minutes; and taking out to obtain the modified talcpowder.

Description

technical field [0001] The invention relates to a modified talc powder and a method for preparing the modified talc powder. Background technique [0002] Talc is a mineral composed of layered silicate crystals with the molecular formula Mg 3 [Si 4 o 10 ](OH) 2 , its surface has hydrophilic groups and is polar, while most polymers are hydrophobic, and the compatibility between the two is poor; at the same time, the finer the talc powder, the easier it is to agglomerate during processing, which will eventually affect the filling polymerization. performance of things. Therefore, in order to improve the interfacial bonding between the two, appropriate methods must be used to modify the surface of talc powder. [0003] The modification method of using coupling agent to treat filler is the most widely used and fastest growing technology. The molecule of the coupling agent usually contains several types of groups with different properties and functions. Its function is to imp...

Claims

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Application Information

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IPC IPC(8): C09C1/28C09C3/12C09C3/08
Inventor 魏福庆许惠芳谢昕邓守军李朋朋段宏义巨娟侠杨世元王卓妮吴建梁天珍金鼎铭刘敏陈坤李广全樊洁
Owner PETROCHINA CO LTD
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