Method for preparing hollow porous material
A porous material and hollow technology, which is applied in the field of preparation of hollow porous materials, can solve the problems of human body and environmental hazards, complex polymer synthesis equipment, and a large number of organic solvents.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0026] The invention discloses a method for preparing a hollow porous material, which comprises the following steps:
[0027] Heating and melting the resin-based material, cooling, and annealing at 30-150°C, the resin-based material is a radiation crosslinking polymer material or a radiation cracking polymer material system;
[0028] Using cobalt 60 or an electron accelerator to irradiate the annealed resin-based material;
[0029] performing gel extraction on the irradiated resin-based material with an organic solvent to obtain a resin gel;
[0030] The resin gel is washed, dried and annealed to obtain a hollow porous material.
[0031] In the present invention, the resin-based material is a radiation crosslinking polymer material or a radiation cracking polymer material system, wherein the radiation crosslinking polymer material is preferably polyethylene, polypropylene, ethylene-octene copolymer or hydrogenated styrene-butadiene-styrene block copolymer; the radiation crac...
Embodiment 1
[0040] Pour the high-density polyethylene particles into the torque rheometer, melt at 140°C, then take out the melted material, quickly place it in liquid nitrogen to cool, and anneal in an oven at 50°C for 30 minutes;
[0041] Place the annealed high-density polyethylene in a cobalt-60 source to irradiate to make it cross-linked, and the absorbed dose is 50kGy;
[0042] Perform gel extraction on the irradiated high-density polyethylene with xylene for 30 hours to obtain a resin gel;
[0043] The resin gel was repeatedly washed with ethanol, dried, and finally annealed at 100° C. for 2 hours to obtain a hollow porous high-density polyethylene material. The material density and average pore size were measured by scanning electron microscopy, and the specific data are shown in Table 1.
Embodiment 2
[0045] The mixture of ethylene-vinyl alcohol copolymer and triallyl isocyanurate with an ethylene segment content of 44% and a mass ratio of 100:5 was melt-blended in a torque rheometer at 190°C. Then take out the molten material, quickly place it in liquid nitrogen to cool, and anneal in an oven at 130°C for 30 minutes;
[0046] Use an electron accelerator to irradiate the annealed material to make it cross-linked, and the absorbed dose is 100kGy;
[0047] Perform gel extraction on the irradiated material with hexafluoroisopropanol for no less than 30 hours to obtain a resin gel;
[0048] The resin gel was repeatedly washed with ethanol, dried, and finally annealed at 110° C. for 2 hours to obtain a hollow porous ethylene-vinyl alcohol copolymer material. The material density and average pore size were measured by scanning electron microscopy, and the specific data are shown in Table 1.
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More