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Plastic dilatant polymer and method for achieving the dilatant property thereof

A technology of dilatation and polymers, which is applied in the field of plastic dilatation polymers and their realization of dilation, and can solve the problems of inability to carry out plastic reprocessing, large space, difficult customized production and use, etc.

Pending Publication Date: 2020-05-19
厦门天策材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional cross-linked polymer materials are usually thermosetting materials, and it is difficult to repair and heal the damage after the structure of the cross-linked polymer material is damaged. Foam, which itself occupies a large space, can easily cause white pollution
Insufficient performance of traditional polymer materials is also reflected in the difficulty of customized production and use according to usage scenarios

Method used

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  • Plastic dilatant polymer and method for achieving the dilatant property thereof
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  • Plastic dilatant polymer and method for achieving the dilatant property thereof

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preparation example Construction

[0729] In the preparation process of the polymer, three methods of mechanical foaming, physical foaming and chemical foaming are mainly used to foam it.

[0730] Among them, the mechanical foaming method is to introduce a large amount of air or other gases into the emulsion, suspension or solution of the polymer with the help of strong stirring during the preparation of the polymer to make it a uniform foam, and then through physical or Chemical changes shape it into foam. In order to shorten the molding cycle, air can be introduced and emulsifiers or surfactants can be added.

[0731]Wherein, the physical foaming method is to use physical principles to realize the foaming of the polymer during the preparation of the polymer, which includes but is not limited to the following methods: (1) inert gas foaming method, that is, under pressure Under normal circumstances, the inert gas is pressed into the molten polymer or pasty material, and then the pressure is reduced and the tem...

Embodiment 1

[0755]

[0756] Get 40 molar equivalents of 1-(2-methylaminoethoxy)-4-vinylbenzene, 60 molar equivalents of 1-(2-methylhexyl)-4-vinylbenzene, 0.6 molar equivalents of benzoyl peroxide, place In a reaction vessel, dissolve it with an appropriate amount of toluene, and react with stirring at 70° C. for 24 hours under a nitrogen atmosphere to obtain a polystyrene derivative. Using pyridine as a catalyst and dichloromethane as a solvent, compound (a) is reacted with excess 4-vinylbenzoyl chloride to obtain compound I; then take 100 molar equivalents of 1-(2-methylhexyl)-4 - Ethylene benzene, 3 molar equivalents of compound I, 0.6 molar equivalents of benzoyl peroxide, placed in a columnar container, record the total mass of the above-mentioned reactants as 100wt%, then add 50wt% of the polystyrene derivatives prepared above , 250wt% toluene, stirred and mixed evenly, and reacted at 70° C. for 24 hours under a nitrogen atmosphere to prepare a dilatant polymer organogel. The gla...

Embodiment 2

[0758]

[0759] Using pyridine as a catalyst and dichloromethane as a solvent, compound I is prepared by reacting compound (a) with excess acryloyl chloride. Compound (b) is prepared by reacting hydroxyethyl methacrylate with excess ethyl isocyanate using dibutyltin dilaurate as a catalyst. Take 60 molar equivalents of 1-(2-methoxyethoxy)-4-vinylbenzene, 60 molar equivalents of hydroxyethyl methacrylate, 40 molar equivalents of compound (b), and 5 molar equivalents of compound I in a reaction vessel , dissolved in an appropriate amount of toluene, and then added 1.2 molar equivalents of azobisisobutyronitrile initiator, stirred and reacted at 70° C. for 24 hours under a nitrogen atmosphere to prepare a dilatant polymer organogel. The dilatant gel is rich in strong dynamic cross-linking and has good dilation and energy absorption properties. It is made into a sample with a thickness of 1cm. According to the EN1621-2012 method, the temperature of the sample is measured at 25°...

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Abstract

The invention relates to a plastic dilatant polymer. The plastic dilatant polymer has plasticity and at least contains vitrification dilatant property. The plastic dilatant polymer at least contains avitrified dilatant polymer component and at least one dynamic unit, and does not contain common covalent cross-linking above a gel point. The crosslinking structure of the plastic dilatant polymer has dynamic reversibility, so that the material is endowed with plasticity, self-repairing property, recoverability, reprocessability and shape memory property, and can be used as an energy absorbing material, a self-repairing material, a tough material and a shape memory material. The invention also relates to a method for realizing the dilatant property of the plastic polymer, and an energy absorption method for absorbing energy by taking the plastic polymer with the dilatant property as an energy absorption material.

Description

technical field [0001] The invention relates to a plastic dilatant polymer and a method for realizing dilatancy thereof, as well as an energy-absorbing method using the plastic dilatant polymer as an energy-absorbing material. Background technique [0002] Compared with traditional materials such as cement, glass, ceramics and metals, polymer materials / macromolecular materials are relatively new materials, but their development speed and wide range of applications have greatly surpassed traditional materials, and they are gradually used in daily life, industry, Various fields such as agriculture, national defense, military and science and technology are playing an increasingly important role. Polymer materials have excellent processing properties, such as plasticity, extensibility, extrudability, and spinnability. The superiority of polymer materials is also reflected in its high elasticity, low elastic modulus, viscoelasticity and other mechanical properties, and this mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08J3/24
CPCC08G83/008C08J3/24
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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