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Polymer foam particles with skin and dilatancy and preparation method thereof

A technology of polymer particles and foam particles, applied in the direction of coating, can solve problems such as single performance, and achieve the effect of low density, good energy absorption capacity, and good energy dispersion

Pending Publication Date: 2020-06-09
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

With the advancement of material science and technology, the traditional foam material has a single structure and performance, which can no longer meet the needs of the rapidly developing high-tech field, and it also needs to develop in the direction of multi-function and intelligence.

Method used

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  • Polymer foam particles with skin and dilatancy and preparation method thereof
  • Polymer foam particles with skin and dilatancy and preparation method thereof
  • Polymer foam particles with skin and dilatancy and preparation method thereof

Examples

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preparation example Construction

[0600] In the preparation process of the skin-expandable polymer foam particles, those skilled in the art can choose a suitable foaming method to prepare the polymer foam particles according to the actual preparation situation and the properties of the target polymer.

[0601] The present invention provides a preferred and suitable method for preparing skinned dilatant polymer foam particles, which is characterized in that it uses intrinsic dilatant polymer and / or non-dilatant polymer, foaming agent and Optional dispersible dilatant dispersion, optional other additives, optional fillers as raw materials, prepared by the following methods:

[0602] Premix the intrinsic dilatant polymer / non-dilatant polymer, optional other additives, and optional fillers, and use extrusion equipment to extrude and pelletize the resulting polymer particles and foaming agent , Optional dispersible dilatant dispersion liquid and optional suspension are added to a closed reactor to be immersed by heating...

Embodiment 1

[0669] Weigh 20g of hydroxyl-terminated polyethylene oxide in a dry and clean flask, heat it to 110°C to remove water for 1h, then add 0.2g of polyurethane catalyst A-1 and 6.0g of toluene diisocyanate, stir to react, and pour into a suitable mold Keep the mold temperature at 56°C, open the mold after 7 minutes to obtain a polyurethane sample, cut it into polyurethane particles of appropriate size, and then add it to the extruder for extrusion and drawing. The extrusion temperature is 150-170°C. The silk sample is printed with a 3D printer, and the melting temperature of the equipment is controlled to 150°C. After maintaining at this temperature for 15 minutes, it will be ejected from the printer nozzle and printed into foam particles with a pneumatic dilatant structure and an outer skin structure. After the printing is completed , Placed in a constant temperature oven for a period of time, take out the naturally cooled expandable polymer foam particles with skin, the obtained p...

Embodiment 2

[0671]

[0672] Using triethylamine as a catalyst, equimolar amounts of [(1E)-6-hydroxy-1-hexen-1-yl]boronic acid and 3-(2-hydroxyethoxy)propane-1,2-diol The condensation reaction is carried out at 50° C. to obtain the organic borate compound (a).

[0673] Mix 2 molar equivalents of polyethylene glycol 500 and 2 molar equivalents of organoborate compound (a) in toluene solvent, add a small amount of triethylamine, stir and heat to 80°C, slowly add 4 molar equivalents of diphenyl Methyl methane diisocyanate, and then continue to react for 2 hours, then add methanol for capping, remove the solvent after the reaction is complete, and prepare dilatant polyurethane elastomer after cooling, which is broken into granules.

[0674] Combine 90 parts by weight of dilatable polyurethane elastomer particles, 10 parts by weight of expandable microspheres (Expancel microspheres from Akzo Nobel), 0.08 parts by weight of zinc borate, and 8 parts by weight of sorbitan monolaurate. Ester, 0.05 part...

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Abstract

The present invention discloses polymer foam particles with skin and dilatancy and a preparation method thereof. The polymer foam particles with the skin and the dilatancy have skin structures and thedilatancy, wherein the dilatancy is realized by at least one mechanism in vitrification dilatancy, dynamic dilatancy, entanglement dilatancy, dispersion dilatancy and pneumatic dilatancy. The polymerfoam particles with the skin and the dilatancy can be used for producing package materials with the dilatancy and the slow rebound properties, anti-impact protective materials, damping materials, buffer materials, sound-absorbent materials, thermal insulation materials and the like, so that the polymer foam particles are widely applied.

Description

Technical field [0001] The invention relates to the field of smart materials, in particular to a skinned dilatant polymer foam particle and a preparation method thereof. Background technique [0002] With the development of society, the consumer market’s demand for lightweight, insulating, anti-vibration and sound insulation materials has gradually increased, and the output and types of foam materials have increased sharply, making it a very important category in polymer products. Compared with unfoamed materials, the inside of foamed materials is composed of a large number of cells with stable and uniform dimensional structure, which makes it have the advantages of light weight, heat and sound insulation, high specific strength, cushioning and shock absorption, and wear resistance. It is widely used in fields such as industry, industry, agriculture, transportation industry, military industry, aerospace industry and daily necessities. [0003] The traditional foam plastic varietie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/12B29B9/06B29B9/16
CPCB29B9/12B29B9/06B29B9/16B29B2009/161
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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