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Dynamic polymer thermoplastic elastomer based energy absorbing method

A thermoplastic elastomer and polymer technology, applied in the field of energy absorption, to achieve the effect of strong dynamics, fast response and fast recovery

Inactive Publication Date: 2018-03-20
翁秋梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These structures for energy absorption are often a simple superposition of the above-mentioned mechanisms. Compared with the single above-mentioned mechanism, although the energy-absorbing range has been expanded to a certain extent and the energy-absorbing efficiency has been improved, its shortcomings cannot be avoided.

Method used

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  • Dynamic polymer thermoplastic elastomer based energy absorbing method
  • Dynamic polymer thermoplastic elastomer based energy absorbing method
  • Dynamic polymer thermoplastic elastomer based energy absorbing method

Examples

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preparation example Construction

[0118] A method for preparing a dynamic polymer ionic liquid gel of the present invention comprises the following steps: blending the raw material for preparing the dynamic polymer with the ionic liquid so that the mass fraction of the raw material for preparing the dynamic polymer is 0.5 to 70%, and passing The appropriate means carry out polymerization, coupling or other types of chemical reactions, and after the reaction is completed, a dynamic polymer ionic liquid gel is produced. Another method for preparing a dynamic polymer ionic liquid gel of the present invention comprises the following steps: swelling the dynamic polymer in a solvent containing an ionic liquid so that the mass fraction of the dynamic polymer is 0.5-70%, and after fully swelling In addition to the solvent, a dynamic polymer ionic liquid gel is made. The above-mentioned ionic liquid is generally composed of organic cations and inorganic anions. As an example, the cations are selected from the group con...

Embodiment 1

[0162] Styrene-butadiene-styrene triblock copolymer (SBS), 2-(tert-butoxycarbonyl-amino)ethanethiol, photoinitiator benzyl dimethyl ketal (BDK) in tetrahydrofuran Reaction, keeping the molar ratio of alkenyl and 2-(tert-butoxycarbonyl-amino)ethanethiol and BDK in polybutadiene is about 50:50:1, and obtains polybutadiene segment containing carbamate base modified SBS.

[0163] 100 mass parts of gained modified SBS, 25 mass parts of naphthenic oil, 17 mass parts of light calcium carbonate, 25 mass parts of polystyrene, 8 mass parts of polyvinyl acetate, 2640.8 mass parts of antioxidant, 2 mass parts of zinc oxide , 1.5 parts by mass of zinc stearate, and 2 parts by mass of AC foaming agent were uniformly mixed, extruded with a screw extruder, then kneaded on an open mill to form a sheet, and foamed at 170° C. and 20 MPa for 8 minutes to form.

[0164] Properties: tensile strength 10.2MPa, elongation at break 710%; density: 87kg / m 3 . The foam material is used as the sole for ...

Embodiment 2

[0166] Dissolve 2-chlorocyclohexanone in dichloromethane, add m-chloroperoxybenzoic acid (mCPBA) 0.12mol, keep the molar ratio of 2-chlorocyclohexanone and mCPBA at 10:12, and react to obtain α-chloro-ε - caprolactone.

[0167] Under anhydrous conditions, dissolve 50 molar equivalents of α-chloro-ε-caprolactone and 100 molar equivalents of ε-caprolactone in toluene, and in 1 molar equivalent of initiator 2,2-dibutyl-2-tin-1 , 3-Dioxetane triggers the reaction at 20 ° C to obtain a polyester-based random copolymer 2a containing chlorine atoms at both ends of the hydroxyl-terminated side group.

[0168] The copolymer 2a whose side group contains chlorine atoms is dissolved in dimethylformamide, and sodium azide with 2 molar equivalents of chlorine atoms is added to react to obtain a copolymer whose side groups contain azide groups.

[0169] A random copolymer containing an azide group in the side group, and 2-propargyl-N-butyl carbamate with equimolar equivalents of the azide g...

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Abstract

The invention discloses a dynamic polymer thermoplastic elastomer based energy absorbing method. The method is characterized in that a multi-section polymer molecule structural thermoplastic elastomerwith a plurality of end sections and one intermediate section is used for performing energy absorbing protection; the end sections of polymer molecules of the thermoplastic elastomer are subjected toreversible phase physical crosslinking; the intermediate section is at an amorphous state; at least some chain sections include at least one side hydrogen bond group, and the side hydrogen bond groups can be subjected to inter-chain super-molecule hydrogen bond dynamic crosslinking. According to the method, the dynamic polymer thermoplastic elastomer is treated as the energy absorbing material and has high damping, vibration absorbing, voice isolating, impact resisting and other functions during use based on the non-covalent property and the dynamic reversibility of hydrogen bonds, and particularly, can be applied to body protection in sports, daily life and work, military police body protection, explosion protection, airborne landing and aerial delivery protection, collision resistance of automobiles, impact resistance of electronic appliances, etc.

Description

technical field [0001] The invention relates to an energy-absorbing method, in particular to an energy-absorbing method based on a thermoplastic elastomer composed of polymer molecules with a multi-segment-single middle segment structure. Background technique [0002] In daily life, sports, entertainment, military, police, security, medical care, production and other activities, human bodies, animal bodies and objects are often severely affected by physical shocks such as impacts, vibrations, shocks, explosions, and sounds. By using energy-absorbing materials to absorb energy, it can effectively protect and alleviate such physical impacts. These energy absorption methods are divided into active energy absorption and passive energy absorption. Active energy absorption includes methods such as the use of shock absorbers, and passive energy absorption includes methods such as the use of materials with energy-absorbing functions. The materials used for energy absorption mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/04C08F8/34C08L53/02C08L91/00C08L25/06C08L31/04C08K13/02C08K3/26C08K3/22C08K5/098C08J9/10A43B13/04C08G81/02C08G63/91C08G63/682C08F126/06C08F220/36C08F212/14C08F220/18C09J133/14C08G63/685C08G77/388C08L87/00C08L91/06C08G81/00C08G69/40C08F283/00C08L51/08C08L71/02
CPCA43B13/04C08F8/34C08F126/06C08F220/36C08F283/002C08G63/6822C08G63/6856C08G63/912C08G63/916C08G69/40C08G77/388C08G81/00C08G81/024C08G81/027C08G81/028C08J9/103C08J2203/04C08J2353/02C08J2387/00C08J2491/00C08J2491/06C08L51/08C08L53/025C08L71/02C08L87/00C08L2203/14C08L2205/035C08L2207/04C09J133/14C08F297/04C08L91/00C08L25/06C08L31/04C08K13/02C08K2003/265C08K2003/2296C08K5/098C08L91/06C08F220/18C08F212/14C08F220/1804
Inventor 不公告发明人
Owner 翁秋梅
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