Modified aeolian sand and PVC (polyvinyl chloride) plate comprising same

Abstract

The invention discloses modified aeolian sand. The modified aeolian sand is prepared by modifying aeolian sand and a modified cyclodextrin / aminosilane coupling agent mixture; the aeolian sand is treated with strong acid; the mass ratio of modified cyclodextrin to an aminosilane coupling agent is 1:(0.1-10); the solubility of modified cyclodextrin at 25 DEG C is greater than 5 g / 100 g water; modified cyclodextrin is cyclodextrin having a characteristic that 1-3 hydroxyls in a cyclodextrin molecule are replaced with phenylalkyl acid. The obtained modified aeolian sand is especially excellent in performance on the aspect of a PVC (polyvinyl chloride) plate.

Description

technical field

[0001] The invention relates to modified aeolian sand, a preparation method of aeolian sand filler, and a PVC plate containing the modified aeolian sand. In particular, the invention relates to International Patent Classification number C01B33 / 00. Background technique

[0002] Aeolian sand is a layer of sand deposited by the wind. More common in deserts and Gobi. Its particle size is mainly distributed between 0.074~0.250mm.

[0003] my country is a country with many deserts. The area of ​​wind and sand is about 1.7311 million square kilometers, accounting for 18.03% of the country's area, mainly distributed in Xinjiang (58.9%), Inner Mongolia (29.9%), Qinghai (5.3%), Gansu (2.7%) , Shaanxi (1.5%), Ningxia (0.6%) and other provinces and regions.

[0004] According to authoritative reports, Northwest China is advancing towards desertification at an astonishing rate of 2,000 square kilometers per year, causing economic losses of more than 50 billion yuan to ...

Examples

preparation example Construction

[0053] The preparation method of modified aeolian sand comprises the following steps:

[0054] -Screen the aeolian sand, remove the aeolian sand particles larger than 150 microns, and obtain selected aeolian sand;

[0055] - contacting the selected aeolian sand with a strong acid solution for 0.1-2 hours, and the volume of the strong acid or strong alkali solution is 1-5 times the volume of the aeolian sand.

[0056] - dry to obtain dry aeolian sand;

[0057] - Fully dispersing the modified cyclodextrin and aminosilane coupling agent in a solvent at 50-150 degrees Celsius to obtain a dispersion solution;

[0058] - Fully mix the dried and selected aeolian sand with the dispersion solution, and react at 50-150 degrees Celsius for 0.2-2 hours;

[0059] -dried to obtain modified aeolian sand;

[0060] The mass ratio of the modified cyclodextrin to the aminosilane coupling agent is 1:0.1-10, the solubility of the modified cyclodextrin at 25 degrees Celsius is greater than 5g / 10...

Embodiment approach 1

[0068] Embodiment 1, modified aeolian sand, the modified aeolian sand is prepared by modifying the mixture of aeolian sand and modified cyclodextrin / aminosilane coupling agent, the aeolian sand is treated with strong acid, and the The mass ratio of the modified cyclodextrin to the aminosilane coupling agent is 1:0.1-10, the solubility of the modified cyclodextrin at 25 degrees Celsius is greater than 5g / 100g water, and the modified cyclodextrin is a cyclodextrin Cyclodextrin in which 1-3 hydroxyl groups in the dextrin molecule are replaced by X, the structure of the X is as follows:

[0069]

[0070] The R is a divalent linear or branched alkyl group with 1-5 carbon atoms.

Embodiment approach 2

[0071] Embodiment 2, same as Embodiment 1, the difference is that the amount of the modified cyclodextrin / aminosilane coupling agent mixture is 3% or 4% or 5% or 6% or 7% or 8% of the mass of aeolian sand %.

technical field

[0001] The invention relates to modified aeolian sand, a preparation method of aeolian sand filler, and a PVC plate containing the modified aeolian sand. In particular, the invention relates to International Patent Classification number C01B33 / 00. Background technique

[0002] Aeolian sand is a layer of sand deposited by the wind. More common in deserts and Gobi. Its particle size is mainly distributed between 0.074~0.250mm.

[0003] my country is a country with many deserts. The area of ​​wind and sand is about 1.7311 million square kilometers, accounting for 18.03% of the country's area, mainly distributed in Xinjiang (58.9%), Inner Mongolia (29.9%), Qinghai (5.3%), Gansu (2.7%) , Shaanxi (1.5%), Ningxia (0.6%) and other provinces and regions.

[0004] According to authoritative reports, Northwest China is advancing towards desertification at an astonishing rate of 2,000 square kilometers per year, causing economic losses of more than 50 billion yuan to ...

Examples

preparation example Construction

[0053] The preparation method of modified aeolian sand comprises the following steps:

[0054] -Screen the aeolian sand, remove the aeolian sand particles larger than 150 microns, and obtain selected aeolian sand;

[0055] - contacting the selected aeolian sand with a strong acid solution for 0.1-2 hours, and the volume of the strong acid or strong alkali solution is 1-5 times the volume of the aeolian sand.

[0056] - dry to obtain dry aeolian sand;

[0057] - Fully dispersing the modified cyclodextrin and aminosilane coupling agent in a solvent at 50-150 degrees Celsius to obtain a dispersion solution;

[0058] - Fully mix the dried and selected aeolian sand with the dispersion solution, and react at 50-150 degrees Celsius for 0.2-2 hours;

[0059] -dried to obtain modified aeolian sand;

[0060] The mass ratio of the modified cyclodextrin to the aminosilane coupling agent is 1:0.1-10, the solubility of the modified cyclodextrin at 25 degrees Celsius is greater than 5g / 10...

Embodiment approach 1

[0068] Embodiment 1, modified aeolian sand, the modified aeolian sand is prepared by modifying the mixture of aeolian sand and modified cyclodextrin / aminosilane coupling agent, the aeolian sand is treated with strong acid, and the The mass ratio of the modified cyclodextrin to the aminosilane coupling agent is 1:0.1-10, the solubility of the modified cyclodextrin at 25 degrees Celsius is greater than 5g / 100g water, and the modified cyclodextrin is a cyclodextrin Cyclodextrin in which 1-3 hydroxyl groups in the dextrin molecule are replaced by X, the structure of the X is as follows:

[0069]

[0070] The R is a divalent linear or branched alkyl group with 1-5 carbon atoms.

Embodiment approach 2

[0071] Embodiment 2, same as Embodiment 1, the difference is that the amount of the modified cyclodextrin / aminosilane coupling agent mixture is 3% or 4% or 5% or 6% or 7% or 8% of the mass of aeolian sand %.

Images