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A kind of preparation method and application of double organosilicon block modified polyurethane

A technology of polyurethane and organosilicon, which is applied in the field of preparation of double organosilicon block modified polyurethane, can solve the problems of high cost, poor moisture and heat resistance, etc. cost effect

Active Publication Date: 2021-08-31
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current vegetable oil-based polyurethane coating materials have poor moisture and heat resistance and high cost.

Method used

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  • A kind of preparation method and application of double organosilicon block modified polyurethane
  • A kind of preparation method and application of double organosilicon block modified polyurethane
  • A kind of preparation method and application of double organosilicon block modified polyurethane

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Effect test

Embodiment 1

[0030] Embodiment 1: A kind of preparation method of double organosilicon block modified polyurethane, the steps are as follows:

[0031] 1) Suction filtration, acid washing, water washing, alkali washing and salt washing of the waste oil in sequence, and then use activated carbon to remove water to obtain regenerated oil; mix regenerated oil, peracetic acid and sulfuric acid at a ratio of 1:0.3:0.03, Heated to 80°C for 2 hours under the protection of nitrogen, and the oil layer was neutralized to neutral with a weak base, then washed with saturated brine, and vacuum distilled to obtain epoxidized regenerated oil;

[0032] 2) Mix epoxidized regenerated oil and ethylene glycol at a ratio of 2:1, add aluminum chloride with 5% weight of regenerated oil, heat to 95°C for 2 hours under nitrogen protection, and rinse unreacted ethylene glycol with distilled water out, and vacuum distilled to obtain alcoholized regenerated oil;

[0033] 3) Mix alcoholized regenerated oil with 20% of...

Embodiment 2

[0034] Embodiment 2: A kind of preparation method of double organosilicon block modified polyurethane, the steps are as follows:

[0035] 1) After the waste oil is suction-filtered, pickled, washed with water, alkali washed and salt washed in sequence, the regenerated oil is obtained after the water is removed with activated carbon; the regenerated oil, peracetic acid and sulfuric acid are mixed in a ratio of 1:0.2:0.02, Heated to 70°C for 3 hours under the protection of nitrogen, and the oil layer was neutralized to neutral with a weak base, then washed with saturated brine, and vacuum distilled to obtain epoxidized regenerated oil;

[0036] 2) Mix epoxidized regenerated oil and ethylene glycol at a ratio of 1:1, add aluminum chloride with 4% weight of regenerated oil, heat to 90°C for 3 hours under nitrogen protection, and rinse unreacted ethylene glycol with distilled water out, and vacuum distilled to obtain alcoholized regenerated oil;

[0037] 3) Mix alcoholized regener...

Embodiment 3

[0038] Embodiment 3: A kind of preparation method of double organosilicon block modified polyurethane, the steps are as follows:

[0039] 1) After the waste oil is suction-filtered, pickled, washed with water, alkali washed and salt washed in sequence, the regenerated oil is obtained after the water is removed with activated carbon; the regenerated oil, peracetic acid and sulfuric acid are mixed in a ratio of 1:0.4:0.04, Heating to 90°C for 1 hour under nitrogen protection, the oil layer was neutralized to neutral with a weak base, then washed with saturated brine, and vacuum distilled to obtain epoxidized regenerated oil;

[0040] 2) Mix epoxidized regenerated oil and ethylene glycol at a ratio of 3:1, add aluminum chloride with 6% weight of regenerated oil, heat to 100°C for 1 hour under nitrogen protection, and rinse unreacted ethylene glycol with distilled water out, and vacuum distilled to obtain alcoholized regenerated oil;

[0041] 3) Mix alcoholized regenerated oil wi...

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Abstract

The invention discloses a preparation method and application of double organosilicon block modified polyurethane. The regenerated oil is pre-modified with peracetic acid and ethylene glycol under catalyst conditions in sequence, and the pre-modified Recycled oil was used as a raw material to synthesize bio-based polyurethane, and the bio-based polyurethane was block-modified by mixing γ-aminopropyltriethoxysilane and oligomeric hydroxyl-terminated polydimethylsiloxane to prepare bisorganosilicon Modified polyurethane. For urea sustained release coatings. The double organosilicon block modified polyurethane of the present invention has the characteristics of low production cost, good heat resistance as a coating material, effective regulation and control of the internal cross-linking structure of the polyurethane, and better slow-release performance.

Description

technical field [0001] The invention relates to a preparation method and application of polyurethane, in particular to a preparation method and application of double organosilicon block modified polyurethane. Background technique [0002] The growth of the world's population is directly related to the continuous exploration of high-yield and efficient agriculture, and fertilizer is one of the important input materials for crop production. However, when fertilizers are directly applied, the nutrient use efficiency of fertilizers, especially nitrogen, is greatly reduced due to the volatilization and leaching of nutrients, so the effective utilization of nitrogen fertilizers is very low (30-50%). The waste of nitrogen will not only cause economic losses, but also have a great negative impact on the environment. Therefore, the development of fertilizers with slow and controlled release behavior can not only meet the needs of plants, increase crop yield, but also reduce nutrient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/65C08G18/61C08G18/36C08G18/28C05G3/40C05G5/30
Inventor 熊玉竹王倩罗惠元戴骏张清坡江猛
Owner GUIZHOU UNIV
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