Shear stiffening gel for preparing composite structure, comprises polymer matrix, crosslinker, and silica nanoparticle functionalized with thiol group
	DWIVEDI M; MUKOPADHYAY K; MANDAL S; ROY D
	2023-08-31
专利权人	DEFENCE RES & DEV ORG (INIA-C)
申请日期	2023-08-31
专利号	IN202311058535-A
成果简介	NOVELTY - Shear stiffening gel comprises a polymer matrix; a crosslinker; and a silica nanoparticle functionalized with thiol group; where thiol group is in the range of 10-15 wt.% with respect to the total weight of the silica nanoparticle. USE - Shear stiffening gel for preparing composite structure (claimed). ADVANTAGE - The shear stiffening gel ensures uniform distribution of particles in the dilatant gels. The composite structure possesses efficient dissipation of low to medium impact energies for development of dampers, shock absorption for gun recoil system, fortified bunkers or ballistic/blast impact protection materials, particularly for, personal protection systems. DETAILED DESCRIPTION - Shear stiffening gel comprises a polymer matrix; a crosslinker; and a silica nanoparticle functionalized with thiol group; where thiol group is in the range of 10-15 wt.% with respect to the total weight of the silica nanoparticle; and the thiol group is selected from group consisting of R-SH, where R is alkyl, triethoxysilane or coumarin. INDEPENDENT CLAIMS are included for: (1) a process for preparing shear stiffening gel, which involves treating a polymer matrix with a boric acid in a solvent to obtain a cross-linked mixture; mixing a thiol functionalized silica nanoparticle with the cross-linked mixture to obtain a homogenous solution; and subjecting the homogenous solution to hydrothermal reaction at a temperature in the range of 150-200 ℃ for a time selected in the range of 8-12 hours to obtain a shear stiffening gel composition; and (2) a composite, which comprises a shear stiffening gel; a functionalized carbon nanofiller; and a porous polyurethane scaffold; where, the porous polyurethane scaffold is partially able to fill with the shear stiffening gel comprising a thiol functionalized silica nanoparticles, a polymer matrix and boric acid.
IPC 分类号	C08J-003/075 ; C09K-008/467
国家	印度
专业领域	化学化工
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/20595
专题	中国科学院新疆生态与地理研究所
作者单位	DEFENCE RES & DEV ORG (INIA-C)
推荐引用方式 GB/T 7714	DWIVEDI M,MUKOPADHYAY K,MANDAL S,et al. Shear stiffening gel for preparing composite structure, comprises polymer matrix, crosslinker, and silica nanoparticle functionalized with thiol group. IN202311058535-A[P]. 2023.

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