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Polyether polyol capable of improving damping capacity of polyurethane, preparation method of polyether polyol and preparation method of damping material prepared from polyether polyol

A polyether polyol and damping material technology, applied in the field of its preparation, polyether polyol, damping material preparation, can solve the problems of material miscibility, stability, mechanical strength, hydrolysis resistance and low temperature resistance, etc. Good corrosion resistance, high mechanical strength and excellent low temperature resistance

Inactive Publication Date: 2015-03-25
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the studies on damping materials are to improve the damping performance of polyurethane materials from the aspects of synthetic polyurethane material fillers, small molecule chain extenders, or polyester polyols containing polar C=O groups. However, in practical applications, materials The miscibility, stability, mechanical strength, hydrolysis resistance and low temperature resistance performance are not good enough, and need to be further studied and improved.

Method used

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  • Polyether polyol capable of improving damping capacity of polyurethane, preparation method of polyether polyol and preparation method of damping material prepared from polyether polyol
  • Polyether polyol capable of improving damping capacity of polyurethane, preparation method of polyether polyol and preparation method of damping material prepared from polyether polyol
  • Polyether polyol capable of improving damping capacity of polyurethane, preparation method of polyether polyol and preparation method of damping material prepared from polyether polyol

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Experimental program
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Effect test

Embodiment 1

[0031] The preparation method of the polyether polyol and the damping material thereof for improving the polyurethane damping performance comprises the following steps:

[0032] (1) Synthesis of polyether polyols:

[0033] Add 228Kg of bisphenol A, 0.612Kg of DMC catalyst and 10g of phosphoric acid in a pressure-resistant reactor, raise the temperature to 120°C, vacuumize to -0.092MPa for dehydration for 1h, then raise the temperature to 150°C, add 51Kg of epichlorohydrin monomer to activate Reaction, when the pressure in the reactor drops to 0.05MPa, start to drop epichlorohydrin continuously, and control the dropping rate at 3Kg / min; after the feeding is completed, aging and reacting at 150°C for 1h, and then vacuumize to remove unreacted residual mono body, lower the temperature to 85°C, add antioxidant additives, stir for 0.5h, and discharge to obtain a light yellow transparent liquid.

[0034] (2) Synthesis of polyurethane prepolymer:

[0035] Add 100Kg of polyether pol...

Embodiment 2

[0039] The preparation method of the polyether polyol for improving the damping performance of polyurethane and its damping material comprises the following steps:

[0040] (1) Synthesis of polyether polyols:

[0041]Add 228Kg of bisphenol A, 1.025Kg of DMC catalyst and 20g of phosphoric acid into a pressure-resistant reactor, raise the temperature to 120°C, vacuumize to -0.092MPa for dehydration for 1h, then raise the temperature to 150°C, add 82Kg of epichlorohydrin monomer to activate Reaction, when the pressure in the reactor drops to 0.05MPa, start to drop epichlorohydrin continuously, and control the dropping rate at 3.5Kg / min; after the feeding is completed, aging reaction at 150°C for 1h, and then vacuumize to remove unreacted residue For the monomer, cool down to 85°C, add antioxidant additives, stir for 0.5h, and discharge to obtain a light yellow transparent liquid.

[0042] (2) Synthesis of polyurethane prepolymer:

[0043] Add 100Kg of polyether polyol obtained ...

Embodiment 3

[0047] The preparation method of the polyether polyol and the damping material thereof for improving the polyurethane damping performance comprises the following steps:

[0048] (1) Synthesis of polyether polyols:

[0049] Add 228Kg of bisphenol A, 1.24Kg of DMC catalyst and 31g of phosphoric acid into a pressure-resistant reactor, raise the temperature to 120°C, vacuumize to -0.092MPa for dehydration for 1h, then raise the temperature to 145°C, add 93Kg of epichlorohydrin monomer to activate Reaction, when the pressure in the reactor drops to 0.05MPa, start to drop epichlorohydrin continuously, and control the dropping rate at 4Kg / min; after the feeding is completed, aging and reacting at 145°C for 1h, and then vacuumize to remove unreacted residual mono body, lower the temperature to 85°C, add antioxidant additives, stir for 0.5h, and discharge to obtain a light yellow transparent liquid.

[0050] (2) Synthesis of polyurethane prepolymer:

[0051] Add 100Kg of polyether po...

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Abstract

The invention belongs to the technical field of synthesizing organic macromolecules, and in particular relates to polyether polyol capable of improving the damping capacity of polyurethane, a preparation method of the polyether polyol and a preparation method of a damping material prepared from the polyether polyol. The polyether polyol of which the end group is secondary hydroxy is obtained by using bisphenol a as an initiating agent and adopting a bimetal cyanide complex catalyst to catalyze ring opening polymerization of epoxy chloropropane. The damping material prepared from the polyether polyol disclosed by the invention has the characteristics of high mechanical strength, good corrosion resistance, good hydrolysis resistance and good low temperature resistance, the damping material has higher damping factors, and the using temperature range of the damping material is wider.

Description

technical field [0001] The invention belongs to the technical field of organic polymer synthesis, and in particular relates to a polyether polyol for improving the damping performance of polyurethane, a preparation method thereof and a preparation method of a damping material prepared therefrom. Background technique [0002] Damping material is a functional material that can absorb mechanical vibration energy and convert it into heat energy to be consumed. It has the functions of cushioning, shock absorption, and noise reduction. Due to the certain viscoelasticity of polymer materials, under the action of alternating stress, strain hysteresis will occur, resulting in mechanical loss. When vibration or noise is transmitted to polymer materials, the material will convert mechanical energy through the internal friction between molecular chains. Dissipate heat energy and play a role in shock absorption and noise reduction. Polyurethane material is a multi-block copolymer, with ...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/66C08G18/48C08G18/32C08G18/10
Inventor 刘军孙兆任宁晓龙马海晶王玉
Owner SHANDONG INOV NEW MATERIALS CO LTD
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