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Modified talcpowder and preparation method thereof

A talcum powder and modification technology, applied in the direction of fibrous filler, dyed organosilicon compound treatment, etc., can solve the problems of complex preparation process, fluctuation of modifier quality, and many raw materials, etc., to achieve high sedimentation volume and improve modification effect , the effect of low oil absorption

Active Publication Date: 2013-02-20
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

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preparation example Construction

[0029] Preparation of polyol laurate

[0030] Preparation of glyceryl monolaurate: Mix 200.0 g of lauric acid and 92.0 g of glycerin, add catalyst sodium hydroxide, heat and stir, control the temperature at 200° C., react for 4 hours, after the reaction is completed, filter to obtain glyceryl monolaurate.

[0031] 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 3 hours, the reaction is complete, filter , in butylene glycol monolaurate.

[0032] Preparation of pentaerythritol monolaurate: Mix 200.0 g of lauric acid and 136.0 g of pentaerythritol, add catalyst sodium hydroxide, heat and stir, and control the temperature at 180° C., react for 5 hours, after the reaction is completed, filter to obtain pentaerythritol monolaurate.

[0033] Preparation of silicone / polyether copolymer

[0034] Preparation of silicone / polyether copolymer A: Mix 470.0g no...

Embodiment 1

[0039] The modified talcum powder is prepared as follows:

[0040] 1) Weigh 1000g of the dried talcum powder material and put it into a temperature-controllable high mixer;

[0041] 2) Weigh 10.0 g of modifier propylene glycol laurate and 10.0 g of silicone / polyether copolymer A;

[0042] 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;

[0043] 4) Take out the modified talcum powder.

Embodiment 2

[0045] The modified talcum powder is prepared as follows:

[0046] 1) Weigh 1000g of the dried talcum powder material and put it into a temperature-controllable high mixer;

[0047] 2) Weigh 4.0 g of modifier monolaurin and 6.0 g of silicone / polyether copolymer B;

[0048] 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;

[0049] 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 polyalcohol laurate and organic silicon / polyether copolymer; the structural formula of the organic silicon / polyether copolymer is CH3(CH2)XC6H4(OC2H4)yO-Si(OCH3)2-CH2-CHR1R2; x is 5 to 15; y is 1 to 30; R1 is hydrogen, halogen or alkyl; and R2 is hydrogen, halogen or alkyl.

Description

technical field [0001] The invention relates to a modified talcum powder and a method for preparing the modified talcum 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/28C09C3/12C08K9/04C08K9/06
Inventor 魏福庆许惠芳李朋朋邓守军谢昕王卓妮段宏义杨世元金鼎铭吴建梁天珍邵月君刘敏陈坤郭义
Owner PETROCHINA CO LTD
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