The synthesis, characterization and properties of silicone adhesion promoters for addition-cure silicone rubber

Pan, Zhaoqun; Sun, Rui; Zhu, Shuangli; Kang, Yingzi; Huang, Bingsheng; Zhu, Liqiang

doi:10.1080/01694243.2018.1428059

Cited by 25 publications

(10 citation statements)

References 21 publications

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“…To qualitatively evaluate the adhesion performance of the silicone material, both the adhesive tensile strength and the lap shear strength parameters were measured. It was found that the shear strength of conventional silicone elastomers with the aluminum substrate without additional treatments was 0.30 to 0.40 MPa. , Compared with conventional silicone elastomers, the eco-friendly silicone material prepared in this study showed a considerable improvement in adhesive properties, up to 1.09 MPa, which is 263% higher than that of conventional silicone elastomers. As shown in Figure a,b, the shear strength increases from 0.71 to 1.09 MPa, showing a regular increasing trend as the dopamine content increases from 2 to 5%.…”

Section: Resultsmentioning

confidence: 70%

Bioinspired High-Performance Silicone Elastomers by Catalyst-Free Dopamine Cross-Linking

Liu,

Hu,

Zheng

et al. 2024

Ind. Eng. Chem. Res.

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Silicone elastomers, as good sealants and adhesives, have been widely applied in protective coatings, architectural decoration, electronic packaging, and other fields. However, the traditional cross-linking of silicone elastomers is highly dependent on toxic catalysts or heavy metals, which may inevitably lead to severe environmental pollution. Moreover, most silicone elastomers suffer from a poor adhesive performance. In this study, inspired by the high adhesion properties of mussels, an eco-friendly and catalyst-free silicone elastomer with high adhesion properties was prepared by using dopamine as a cross-linker and amino-functionalized polysiloxane as a base. Under mild conditions (pH = 8.5), dopamine was self-polymerized and underwent Michael addition and Schiff base reactions with amino groups to form robust elastomers. It was found that the cross-linking degree gradually increases with the dopamine content increasing from 2 to 6%, and the solvent resistance and thermal stability exhibit significant improvement. Meanwhile, the tensile strength increased by 245% from 0.22 to 0.77 MPa. Especially, the as-obtained silicone elastomers have excellent adhesion to different materials. The lap shear strength with aluminum substrates (1.09 MPa) is 3.6 times higher than that of conventional silicone elastomers. The development of catalyst-free bioinspired silicone elastomers with high adhesion may shed light on the research of eco-friendly silicone materials and offer innovative insight for mussel-inspired adhesives.

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Section: Resultsmentioning

confidence: 70%

Bioinspired High-Performance Silicone Elastomers by Catalyst-Free Dopamine Cross-Linking

Liu,

Hu,

Zheng

et al. 2024

Ind. Eng. Chem. Res.

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“…7 hydrogen atom, and the triple peaks at 1.41 and 1.25 correspond to the No. 3 hydrogen atom and its symmetry peak [ 22 ], of which 7.26 is the CDCl 3 solvent peak. The structure of ViSil-100 was verified by the above spectral analysis.…”

Section: Resultsmentioning

confidence: 99%

Effect of Methyl Hydro-Silicone Oil Content and Aging Time on Compression Modulus and Breakdown Strength of Additional Liquid Silicone Rubber Gel

Wang,

Chen,

Yang

et al. 2024

Polymers

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The performance of silicone rubber gel elastomers is affected by the composition and structure of the crosslinker. In this work, a two-component addition liquid silicone rubber gel material was developed, and the effects of the contents of two methyl hydro-silicone oils on the compression modulus and breakdown strength of the silicone rubber gel insulating material, as well as the performance change after hot air aging at different times (24 h, 48 h, 72 h, 96 h, 120 h, 144 h, 168 h), were studied. The results showed that the breakdown strength and compression modulus exhibited an upward trend with the increase in the hydrogen silicone oil content. The best performance was achieved in the silicone rubber gel with Si-H:Si-Vi = 1.4:1. Moreover, with the increase in aging time, the breakdown strength decreased and the compression modulus increased.

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“…For the manufacture of MAEs, polymers based on vinyl or rubber are used as a matrix [ 13 , 14 , 15 ], and microscopic magnetoactive particles are used as a filler [ 16 , 17 ].…”

Section: Methodsmentioning

confidence: 99%

Research on Dynamic and Mechanical Properties of Magnetoactive Elastomers with High Permeability Magnetic Filling Agent at Complex Magneto-Temperature Exposure

2021

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We consider magnetically active elastomer as a potentially applicable material for manufacturing a working channel of a magnetic pump unit. During the study, the samples were exposed to a magnetic field, a temperature field, and their combination to assess the change in the elastic-strength properties of the final material. For the preparation of samples, high permeability magnetic fillers of various sizes were used in the concentration range of 50–70%. Samples were made with an isotropic and an anisotropic structure. Studies have shown that when using a filler with a relatively coarse fraction, the material has more stable dynamic and mechanical characteristics: the tensile strength of the sample increases by an average of 38%. With the combined effect of magnetic and temperature fields on the material, its elasticity and strength increase by an average of 30% in comparison with the material without external influence. Based on the results obtained, the composition and structural organization of the material, which has the best complex of elastic strength characteristics, has been substantiated. For the manufacture of a pumping unit tube, it is preferable to use an isotropic magnetoactive elastomer with a coarser filler content of about 60%.

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The synthesis, characterization and properties of silicone adhesion promoters for addition-cure silicone rubber

Cited by 25 publications

References 21 publications

Bioinspired High-Performance Silicone Elastomers by Catalyst-Free Dopamine Cross-Linking

Bioinspired High-Performance Silicone Elastomers by Catalyst-Free Dopamine Cross-Linking

Effect of Methyl Hydro-Silicone Oil Content and Aging Time on Compression Modulus and Breakdown Strength of Additional Liquid Silicone Rubber Gel

Research on Dynamic and Mechanical Properties of Magnetoactive Elastomers with High Permeability Magnetic Filling Agent at Complex Magneto-Temperature Exposure

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