Preparation method of silicon dioxide modified polyether polyol

A polyether polyol and silica technology, which is applied in the field of chemical synthesis to achieve the effect of reducing usage and reducing local performance defects

Active Publication Date: 2016-04-06
SHANDONG BLUSR DONGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a preparation method of silica-modified polyether polyol, and the prepared silica-modified polyether polyol has the effect of reinforcing and hardening polyurethane materials , can reduce the amount of isocyanate used in polyurethane materials; make polyurethane products reduce the possibility of local performance defects due to uneven distribution of fillers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At room temperature, add 10 g of water glass to the beaker, add deionized water to dilute to 100 g of the aqueous solution, and stir for 0.5 hours. Under the condition of stirring with a baffle, add an appropriate amount of hydrochloric acid dropwise to adjust the pH value to 5. After stirring for 0.5 hours, add 0.3 g of an ethanol solution containing 0.03 g of methoxytrimethylsilane under the condition of stirring, and stir 1 hour. Add the prepared solution into the flask, and then add 10 g of polyether 330N into the flask, stir and raise the temperature to 50° C., and the reaction is stirred for 1 hour. Leave to stand for stratification to obtain the lower white emulsion, dilute the emulsion with water and stand for stratification for 3 times to obtain the lower emulsion, take out the emulsion and add 20g of polyether 330N and 10g of n-butanol to the emulsion to obtain The milky liquid was added to the flask, stirred and slowly heated to 120°C and vacuumed. When the...

Embodiment 2

[0035] At room temperature, add 10 g of water glass to the beaker, add deionized water to dilute to 100 g of the aqueous solution, and stir for 0.5 hours. Under the condition of stirring with a baffle, slowly drop an appropriate amount of hydrochloric acid to adjust the pH value to 5, and after stirring for 0.5 hours, add 0.1 g of an ethanol solution containing 0.01 g of methoxytrimethylsilane under the condition of stirring, Stir for 1 hour. Add the prepared solution into the flask, and then add 10 g of polyether 330N into the flask, stir and raise the temperature to 50° C., and the reaction is stirred for 1 hour. Stand for stratification, obtain the lower layer of white milk, dilute the milk with water and stand for stratification 3 times to obtain the final milk, take out the milk and add 20g of polyether 330N and 15g of isopropanol to the milk, The resulting milky liquid was added to the flask, stirred and slowly warmed to 110°C and vacuumed. When the liquid becomes ligh...

Embodiment 3

[0038] At room temperature, add 10 g of water glass to the beaker, add deionized water to dilute to 100 g of the aqueous solution, and stir for 0.5 hours. Under the condition of stirring with a baffle, slowly add an appropriate amount of hydrochloric acid to adjust the pH value to 5. After stirring for 0.5 hours, add 0.1 g of 3-aminopropyltriethoxysilane containing 0.015 g under stirring. ethanol solution, stirred for 1 hour. Add the prepared solution into the flask, and then add 10 g of polyether 330N into the flask, stir and raise the temperature to 50° C., and the reaction is stirred for 1 hour. Stand for stratification, obtain the lower white emulsion, dilute the emulsion with water and stand for stratification 3 times to obtain the final emulsion, take out the emulsion and add 20g of polyether 330N and 15g of isobutanol to the emulsion, The resulting milky liquid was added to the flask, stirred and slowly warmed to 110°C and vacuumed. When the liquid becomes light yello...

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Abstract

The invention belongs to the technical field of chemical synthesis, and in particular discloses a preparation method of silicon dioxide modified polyether polyol. The preparation method comprises the steps of diluting water glass, adjusting pH to be 4-7, and adding a compound S and polyether polyol for reacting, thus obtaining the silicon dioxide modified polyether polyol, wherein a chemical formula of the compound S is (R-O)n-SiXm, R is the alkyl of C1-C20, X is any substituent group, n is 1, 2 or 3, and n plus m is equal to 4. An inorganic matter silicon dioxide is introduced into the polyether polyol, the prepared silicon dioxide modified polyether polyol has a reinforcing and hardening effect on a polyurethane material, and the use amount of isocyanate in the polyurethane material can be reduced; the size of particles in the silicon dioxide modified polyether polyol is 10 nanometers to 10 micrometers, so that the possibility that the local performance defect of a polyurethane product occurs due to uneven filler distribution is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a preparation method of silica-modified polyether polyol. Background technique [0002] Polyether polyol (Polyetherpolyol) has been used for decades, and its modification process is various. Polyether polyol can change the molecular structure of the initiator and the change of the related structure, such as halogen-containing The introduction of monomers can increase the flame retardancy of products, such as epichlorohydrin series products; the addition of aliphatic long-chain monomers will enhance the lipophilicity of products, such as soybean oil series products; the introduction of plant-based epoxidized monomers can increase natural organic matter The use of chemical and petrochemical products can reduce the dependence of products on chemical and petrochemical industries. For example, the starting agent is sucrose and sorbitol series products; the intro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08G18/50
CPCC08G18/5096C08G65/00C08G2650/02
Inventor 韩宏伟郭辉李霞贾世谦
Owner SHANDONG BLUSR DONGDA CHEM
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