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High-strength low-density poly(4-methyl-1-pentene) foam and preparing method thereof

A low-density, high-strength technology, used in the field of high-strength low-density poly-4-methyl-1-pentene foam and its preparation, can solve the problem of poor mechanical properties of products, low gel system strength, and high mechanical processing. Difficulty and other problems, to achieve the effect of stable parameters, high reproducibility, and improved skeleton strength

Active Publication Date: 2016-12-14
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And for the density below 30mg / cm 3 Due to the low strength of the gel system, high brittleness, and various adverse phenomena during mechanical processing, it brings high difficulty to mechanical processing, and the mechanical properties of the final product obtained by processing this low-density PMP foam poor performance

Method used

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Examples

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preparation example Construction

[0018] The present invention also proposes a method for preparing a high-strength low-density poly-4-methyl-1-pentene foam, including the step of preparing a polymer solution: mixing solvent, poly-4-methyl-1-pentene and reinforcing The reagents are mixed uniformly and heated to obtain a polymer solution.

[0019] Further, in other preferred embodiments of the present invention, the reinforcing agent includes an inorganic reinforcing agent, and the above step of preparing the polymer solution further includes a step of premixing the solvent and the inorganic reinforcing agent. Specifically, the way of premixing is ultrasonic dispersion at 60-80° C. for 10-30 minutes. Sufficient temperature can maintain the fluidity of the solvent, and under the action of ultrasound, the solvent can be mixed more uniformly, and the inorganic reinforcing agent can be more uniformly dispersed in the solvent.

[0020] Furthermore, in other preferred embodiments of the present invention, the solven...

Embodiment 1

[0029] This embodiment proposes a high-strength low-density poly-4-methyl-1-pentene foam, and its preparation method is as follows:

[0030] Add 20.1 g of naphthalene and 27.1 g of mesitylene in turn to a ground-necked flask to form a solvent, add magnetons to the solvent, and heat to 180° C. in an oil bath under magnetic stirring. Add 0.82g of poly-4-methyl-1-pentene and 0.27g of polystyrene to the solvent, and stir for 2h until the poly-4-methyl-1-pentene is completely dissolved to form a polymer solution. Transfer the polymer solution to a preheated mold, cool naturally to room temperature, and stand at room temperature for 12 hours until the polymer solution is completely solidified, then move the solidified polymer solution to a vacuum drying oven to dry and remove the solvent to obtain High strength low density poly-4-methyl-1-pentene foam.

Embodiment 2

[0032] This embodiment proposes a high-strength low-density poly-4-methyl-1-pentene foam, and its preparation method is as follows:

[0033] Add 20.1 g of naphthalene and 27.1 g of mesitylene in turn to a ground-necked flask to form a solvent, add magnetons to the solvent, and heat to 180° C. in an oil bath under magnetic stirring. Add 0.545g of poly-4-methyl-1-pentene and 0.545g of polystyrene to the solvent, and stir for 3h until the poly-4-methyl-1-pentene is completely dissolved to form a polymer solution. Transfer the polymer solution to a preheated mold, cool to room temperature naturally, and stand at room temperature for 16 hours until the polymer solution is completely solidified, then move the solidified polymer solution to a vacuum drying oven to dry and remove the solvent to obtain High strength low density poly-4-methyl-1-pentene foam.

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Abstract

The invention relates to a high-strength low-density poly(4-methyl-1-pentene) foam and belongs to the field of polymer materials. The high-strength low-density poly(4-methyl-1-pentene) foam is prepared from, by mass, 50-99.8% of poly(4-methyl-1-pentene) and 0.2-50% of an enhancer, wherein the enhancer is composed of at least one of a polymer enhancer and an inorganic enhancer. By adding the enhancer into traditional low-density poly(4-methyl-1-pentene) foam, the framework strength of the low-density poly(4-methyl-1-pentene) foam is remarkably improved, and then the processability of the foam and the mechanical property of the foam are improved. The invention further provides a preparing method of the high-strength low-density poly(4-methyl-1-pentene) foam. The preparing method is easy to implement and stable in technology, too complicate equipment is not needed, the high-strength low-density poly(4-methyl-1-pentene) foam can be efficiently obtained with a few of simple steps, and the obtained foam product is stable in parameter and high in repeatability.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-strength low-density poly-4-methyl-1-pentene foam (PMP) and a preparation method thereof. Background technique [0002] Low-density polymer porous material is an excellent functional material. Due to its many unique physical properties, such as high dielectric constant, low thermal conductivity, low density, high specific surface area, etc., it can be used as catalyst carrier, separator, etc. Thermal materials, gas filtration devices, integrated circuit substrates, etc. Among them, the PMP foam material is pure hydrocarbon material, which has the advantages of high strength and easy molding. It is currently one of the most widely used and studied low-density foam materials in the experimental research of inertial confinement fusion (ICF) in the world. [0003] The hardness and strength of PMP foam have a nearly linear relationship with its density. In the prior art, the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/20C08L25/06C08L25/16C08K7/24C08J9/28
CPCC08J9/28C08J2201/0502C08J2323/20C08J2325/06C08J2423/20C08J2425/06C08J2425/16C08K7/24C08K2201/011C08L23/20C08L25/06C08L2203/14C08L25/16
Inventor 黄传群罗炫张庆军陈姝帆杨睿戆方瑜邵婷
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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