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Preparation method of submicron SiO2/polyethylene glycol modified foam polyurethane composite material

A polyethylene glycol modified and foamed polyurethane technology, applied in the field of polymer composite materials, can solve problems such as limited application temperature range, and achieve excellent impact resistance and protection performance, good physical and chemical stability, and uniform foam pores. delicate effect

Inactive Publication Date: 2018-01-09
XI AN PEAK XUANKAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in practical applications, since the freezing point of polyethylene glycol can only be as low as -15°C (ethylene glycol), after adding silicon dioxide, its freezing point is mostly above 0°C, so it has caused problems for its application temperature range. Certain limitations

Method used

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  • Preparation method of submicron SiO2/polyethylene glycol modified foam polyurethane composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of submicron SiO2 / polyethylene glycol modified foamed polyurethane composite material is carried out in sequence according to the following steps:

[0025] Step 1: Use polyethylene glycol 200 and silica with a particle size of 100nm to mix uniformly, and then add hydroxy-terminated silicone oil with a degree of polymerization of 80 to make STF base material. The polyethylene glycol 200: silica mass ratio is 60: 40. The mass ratio of hydroxyl-terminated silicone oil: polyethylene glycol / silica mixture is 1:99.

[0026] Step 2: Mix the STF base material and the foamed polyurethane A material to obtain a foam preparation. The mass ratio of the STF base material to the foamed polyurethane A component is 0.5:99.5.

[0027] Step 3: Mix and foam the foam preparation obtained in Step 2 with the foamed polyurethane B material (the mixing ratio is fixed at 100:55) to prepare a 1 cm thick foamed board to obtain submicron SiO2 / polyethylene glycol modified Polyurethan...

Embodiment 2

[0029] A preparation method of submicron SiO2 / polyethylene glycol modified foamed polyurethane composite material is carried out in sequence according to the following steps:

[0030] Step 1: Use polyethylene glycol 200 and 950nm silica to mix uniformly, and then add hydroxy-terminated silicone oil with a degree of polymerization of 1000 to make STF base material. The weight ratio of polyethylene glycol 200: silica is 55:45, the mass ratio of hydroxyl-terminated silicone oil:polyethylene glycol / silicon dioxide mixture is 30:70.

[0031] Step 2: Mix the STF base material and the foamed polyurethane A material to obtain a foam preparation. The mass ratio of the STF base material to the foamed polyurethane A component is 18:82.

[0032] Step 3: Mix and foam the foam preparation obtained in Step 2 with the foamed polyurethane B material to prepare a 1 cm thick foamed board to obtain a submicron SiO2 / polyethylene glycol modified foamed polyurethane composite material.

Embodiment 3

[0034] A preparation method of submicron SiO2 / polyethylene glycol modified foamed polyurethane composite material is carried out in sequence according to the following steps:

[0035] Step 1: Use polyethylene glycol 400 and silica with a particle size of 100nm to mix uniformly, and then add hydroxy-terminated silicone oil with a degree of polymerization of 80 to make STF base material. The weight ratio of polyethylene glycol 400: silica is 60: 40. The mass ratio of hydroxyl-terminated silicone oil: polyethylene glycol / silica mixture is 1:99.

[0036] Step 2: Mix the STF base material and the foamed polyurethane A material to obtain a foam preparation, and the mass ratio of the STF base material to the foamed polyurethane A component is 0.5:99.5.

[0037] Step 3: Mix and foam the foam preparation obtained in Step 2 with the foamed polyurethane B material to prepare a 1 cm thick foamed board to obtain a submicron SiO2 / polyethylene glycol modified foamed polyurethane composite material....

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Abstract

The invention relates to a preparation method of a submicron SiO2 / polyethylene glycol modified foam polyurethane composite material, belonging to the technical field of polymer composite materials. The preparation method comprises the steps of weighing polyethylene glycol and submicron SiO2 according to a certain mass ratio and then uniformly mixing at a certain temperature so as to obtain an STFbase material; uniformly mixing the STF base material at the first step and a foam polyurethane material A, so as to obtain a component A in foam polyurethane, wherein the mass ratio of the STF base material to the component A reaches a certain value; and mixing the component A at the second step and a foam polyurethane material B, hinge foaming at a certain temperature so as to obtain the composite material. When the prepared composite material is sheared or impacted, the STF material in disperse phase distribution in the material can absorb and consume some energy due to drastic change of the viscosity, so as to enhance the foam polyurethane base, and after impact, undamaged distortion can be recovered. The preparation method is easy to operate, and is suitable for commercial production.

Description

Technical field [0001] The invention belongs to the technical field of polymer composite materials and relates to submicron SiO 2 / Preparation method of polyethylene glycol modified foamed polyurethane composite material. Background technique [0002] Polyethylene glycol and SiO 2 The system constitutes a non-Newtonian fluid material (STF) with typical shear thickening effect. Under rapid impact conditions, the viscosity of STF materials can be increased by 2-3 orders of magnitude, and it can instantly transform from a liquid with good fluidity to a solid with extremely high viscosity and high strength within a few milliseconds, so its impact resistance is excellent. And the physical-chemical properties are stable. Microcellular foamed polyurethane material is an excellent cushioning and energy-absorbing material, which is widely used in sports protection products, cushioning insoles, vibration protection and other fields. If STF is organically combined with microcellular foam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/61C08G18/48C08K3/36C08G101/00
Inventor 李峰李大劲范伟
Owner XI AN PEAK XUANKAI NEW MATERIAL CO LTD
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