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Elastomer composite material as well as preparation method and application thereof

A composite material and elastomer technology, applied in the field of materials, can solve problems such as lack of processability, high synthesis requirements, and increased material use costs, and achieve excellent processing performance, self-repairing performance, excellent impact resistance, and good mechanical properties. Effect

Active Publication Date: 2022-07-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of elastomeric materials based on high-molecular-weight polymers generally requires high synthesis requirements, and the processing of the prepared elastomeric materials also requires more complicated procedures, often requiring high temperature for processing and molding, and lacks good processability, which limits Further applications of elastomeric materials based on high molecular weight polymers
At the same time, the elastomer materials prepared based on high molecular weight polymers are difficult to recycle after use, which will increase the cost of materials to a certain extent.
In addition, elastomer materials based on high molecular weight have poor self-healing properties due to molecular chain entanglement or chemical crosslinking.

Method used

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  • Elastomer composite material as well as preparation method and application thereof
  • Elastomer composite material as well as preparation method and application thereof
  • Elastomer composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The preparation steps of the elastomer composite material in this example are as follows:

[0066] 2.7 g of carboxylated POSS was dissolved in tetrahydrofuran to obtain a solution with a concentration of 0.1 mmol / mL, and 0.6 g of polyethyleneimine (Mw=600) was dissolved in water to obtain a solution with a concentration of 0.1 mmol / mL. 10 mL of polyethyleneimine solution was added to a 100 mL round-bottomed flask, and 20 mL of carboxylated POSS solution was slowly added dropwise during stirring. The obtained pale yellow turbid liquid was evaporated under reduced pressure to remove the solvent, and the obtained yellow mucus was put into a vacuum oven for drying for 12 hours to obtain a POSS / PEI elastomer composite material.

Embodiment 2

[0068] The preparation steps of the elastomer composite material in this example are as follows:

[0069] 2.7 g of carboxylated POSS was dissolved in tetrahydrofuran to obtain a solution with a concentration of 0.1 mmol / mL, and 1.8 g of polyethyleneimine (Mw=1800) was dissolved in water to obtain a solution with a concentration of 0.1 mmol / mL. 10 mL of polyethyleneimine solution was added to a 100 mL round-bottomed flask, and 20 mL of carboxylated POSS solution was slowly added dropwise during stirring. The obtained pale yellow turbid liquid was evaporated under reduced pressure to remove the solvent, and the obtained yellow mucus was put into a vacuum oven for drying for 12 hours to obtain a POSS / PEI elastomer composite material.

[0070] figure 2 It is a sample diagram after mixing polyethyleneimine and carboxylated POSS in Example 2; image 3 The sample diagram of the elastomer composite material prepared in Example 2; Figure 4 Tensile graph of the elastomer composite ...

Embodiment 3

[0072] The preparation steps of the elastomer composite material in this example are as follows:

[0073] 2.7 g of carboxylated POSS was dissolved in tetrahydrofuran to obtain a solution with a concentration of 0.1 mmol / mL, and 10.0 g of polyethyleneimine (Mw=10000) was dissolved in water to obtain a solution with a concentration of 0.1 mmol / mL. 10 mL of polyethyleneimine solution was added to a 100 mL round-bottomed flask, and 20 mL of carboxylated POSS solution was slowly added dropwise during stirring. The obtained pale yellow turbid liquid was evaporated under reduced pressure to remove the solvent, and the obtained yellow mucus was put into a vacuum oven for drying for 12 hours to obtain a POSS / PEI elastomer composite material.

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Abstract

The invention discloses an elastomer composite material as well as a preparation method and application thereof. The elastomer composite material is prepared from carboxylated or sulfated polyhedral oligomeric silsesquioxane and an amino-terminated branched polymer; the weight-average molecular weight of the amino-terminated branched polymer is 180 to 15000. The elastomer composite material disclosed by the invention has a cross-linked physical network, reversible electrostatic interaction and hydrogen bond interaction exist between carboxylated or sulfated polyhedral oligomeric silsesquioxane (POSS) and amino-terminated branched polymer, and meanwhile, the branched polymer with low molecular weight has no chain entanglement; reversible physical interaction and a low-molecular-weight branched polymer system provide excellent processability and self-repairing performance for the elastomer composite material, provide good mechanical properties for the material, and realize excellent impact resistance.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to an elastomer composite material and a preparation method and application thereof. Background technique [0002] Elastomeric composites have important and wide-ranging applications in bionic skin, flexible wearable devices, sensing, and impact-resistant materials. Traditional elastomeric composite materials are generally based on polymers, because the chemical / physical cross-linked network of high molecular weight polymers can provide the material with good elastic and mechanical properties. However, the preparation of elastomer materials based on high molecular weight polymers generally requires higher synthesis requirements, and the processing of the prepared elastomer materials also requires more complicated procedures, often requiring high temperature for processing and molding, lack of good processability, limiting Further applications of elastomeric materials based on h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08L83/08C08L79/02
CPCC08L83/06C08L83/08C08L2312/00C08L79/02
Inventor 周鑫杨俊升殷盼超
Owner SOUTH CHINA UNIV OF TECH
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