Polyether polyol used for low-density gaseousness and slow-resilience foam, preparation method of polyether polyol and slow-resilience foam and preparation method thereof

A technology of polyether polyol and slow rebound, which is applied in the field of organic polymer synthesis, and can solve the problems of low density, high comfort, slow rebound foam, no moist comfort, high density of slow rebound foam, etc. It achieves the effects of simple and feasible preparation method, low depression residue and good flatulence

Inactive Publication Date: 2016-02-10
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the raw materials for preparing slow rebound foam are mainly combined with some high-activity polyether and small molecule slow rebound polyether. The prepared slow rebound foam has serious closed cells and strong shrinkage. Therefore, some slow rebound polyethers must be added to the formula. A special cell opener for rebound, and the density of the prepared slow rebound foam is relatively high, about 70-80kg / m 3 , the hand feeling is relatively rough, and there is no moist and comfortable feeling. The slow-rebound foam prepared from this is increasingly unable to meet the market's requirements for low-density, high-comfort slow-rebound foam.

Method used

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  • Polyether polyol used for low-density gaseousness and slow-resilience foam, preparation method of polyether polyol and slow-resilience foam and preparation method thereof
  • Polyether polyol used for low-density gaseousness and slow-resilience foam, preparation method of polyether polyol and slow-resilience foam and preparation method thereof
  • Polyether polyol used for low-density gaseousness and slow-resilience foam, preparation method of polyether polyol and slow-resilience foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The polyether polyol for low-density inflatable slow-rebound foam is a copolymer of propylene oxide and ethylene oxide monomers with trimethylolpropane as the starting agent and ethylene oxide as the end group. Wherein, in the polymerized monomer, propylene oxide accounts for 30 wt%, and ethylene oxide accounts for 70 wt%.

[0036] The preparation method is as follows:

[0037] (1) Add 134g of TMP and 10g of KOH into the pressure-resistant reactor, and replace with nitrogen for 3 times. After measurement, the oxygen content is 45ppm, the temperature is raised to 110°C, the vacuum is pumped to -0.092MPa, and the dehydration reaction is carried out for 5h;

[0038] (2) Continuously add 1460g of propylene oxide and 3406g of ethylene oxide monomer into the pressure-resistant reaction kettle through the proportional adjustment mixer, and carry out polymerization reaction at 120°C. After the feeding is completed, continue to react for 2h; then vacuumize to -0.092 MPa, remove...

Embodiment 2

[0049] The polyether polyol for low-density inflatable slow-rebound foam is a copolymer of propylene oxide and ethylene oxide monomers with glycerol and neopentyl glycol as initiators and ethylene oxide-terminated end groups. Wherein, in the polymerized monomer, propylene oxide accounts for 15 wt%, and ethylene oxide accounts for 85 wt%.

[0050] The preparation method is as follows:

[0051] (1) Add 61.33g of glycerol, 34.67g of neopentyl glycol, and 13.2g of NaOH to the pressure-resistant reactor, and replace it with nitrogen 4 times. After measurement, the oxygen content is 40ppm, and the temperature is raised to 110°C. -0.092MPa, dehydration reaction 7h;

[0052] (2) Continuously add 646g of propylene oxide and 3658g of ethylene oxide monomer into the pressure-resistant reactor through a proportional adjustment mixer, and carry out polymerization reaction at 120°C. After the feeding is completed, continue to react for 2h; then vacuumize to -0.092 MPa, to remove unreacted...

Embodiment 3

[0063] The polyether polyol for low-density flatulence and slow-rebound foam is a copolymer of propylene oxide and ethylene oxide monomers with glycerol and sorbitol as initiators and ethylene oxide-terminated end groups. Wherein, in the polymerized monomer, propylene oxide accounts for 5 wt%, and ethylene oxide accounts for 95 wt%.

[0064] The preparation method is as follows:

[0065] (1) Add 59.28g of glycerol, 23.45g of sorbitol and 16.4g of NaOH to the pressure-resistant reactor, and replace it with nitrogen for 5 times. It is determined that the oxygen content is 28ppm, and the temperature is raised to 110°C, and the vacuum is reduced to -0.092 MPa, dehydration reaction 8h;

[0066] (2) Continuously add 230.3g of propylene oxide and 4367g of ethylene oxide monomer into the pressure-resistant reactor through a proportional adjustment mixer, and carry out polymerization reaction at 120°C. After the feeding is completed, continue to react for 2h; then vacuumize to - 0.09...

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Abstract

The invention relates to polyether polyol used for low-density gaseousness and slow-resilience foam, a preparation method of the polyether polyol and the slow-resilience foam and a preparation method thereof and belongs to the technical field of organic macromolecule synthesis. A polyhydric alcohol compound with small molecular weight serves as an initiator of the polyether polyol, and an end group is copolymer of epoxypropane with the end capped with ethylene oxide and ethylene oxide monomer; the preparation method of the polyether polyol comprises the steps of making the polyhydric alcohol compound with the small molecular weight and a catalyst be subjected to a reaction in a pressure-proof reaction kettle, then sequentially adding polymerization monomer, water, phosphoric acid and magnesium silicate for reaction, and obtaining the polyether polyol; the slow-resilience foam is prepared from a component A and a component B, wherein the component A comprises the polyether polyol, a composite catalyst, silicone oil and a foaming agent, and the component B is modified MDI; the preparation method of the slow-resilience foam comprises the steps of mixing the component A with the component B uniformly, then pouring the mixture into a mold for curing, and obtaining the slow-resilience foam. The slow-resilience foam prepared through the preparation method has the advantages of being low in density, good in gaseousness property and free of shrinkage, and the preparation method of the slow-resilience foam is simple and easy to operate.

Description

technical field [0001] The invention relates to a polyether polyol for low-density flatulence and slow-rebound foam and a preparation method thereof, and a slow-rebound foam and a preparation method thereof, belonging to the technical field of organic polymer synthesis. Background technique [0002] Slow resilience foam, also known as viscoelastic foam or memory foam, is widely used in furniture and bedding as shock absorbers, sound absorbers, and shock absorbers because of its shape memory, energy absorption, sound absorption, and shock absorption. , auto parts, sports equipment, medical equipment and other fields. When slow-rebound foam is used as the seat material and cushion, the body pressure is distributed more evenly, which can reduce fatigue and the displacement of the bottom surface. At present, the raw materials for preparing slow rebound foam are mainly combined with some high-activity polyether and small molecule slow rebound polyether. The prepared slow rebound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/76C08G18/48C08J9/14C08J9/08C08G101/00
Inventor 孙兆任刘军周玉波王玉
Owner SHANDONG INOV NEW MATERIALS CO LTD
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