Method for preparing biological organism optical bionic material and model prepared by thereof
A technology for biological tissue and biomimetic materials, applied in the field of preparation of biological tissue biomimetic materials, can solve the problems of complex preparation process and expensive equipment, and achieve the effects of easy operation, low cost, and time and cost saving.
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[0026] As mentioned above, the preparation process of solid biological tissue optical biomimetic materials is rarely disclosed, and there is still a lack of stable production methods for such materials and commercially available biological tissue biomimetic materials or models in China. Therefore, the present invention provides a preparation method of biological tissue optical biomimetic material.
[0027] According to literature reports, the absorption coefficient of biological tissue ranges from 0.1 to 10 cm -1 , the scattering coefficient ranges from 1 to 1000cm -1 . The present invention aims to provide a method for preparing biological tissue optical biomimetic material with any given optical constant within the above range and a biological tissue optical bionic model prepared by the method. The method comprises the following steps: firstly, a matrix resin is provided, and the matrix resin has a light transmittance greater than or equal to 80% when measured with a thin ...
Embodiment approach
[0044] According to one embodiment of the present invention, the matrix resin may be a curable resin, and preferably the curing time is in the range of 15-30 minutes, preferably about 20 minutes. The optimal curing time can be determined by simple experiments according to the nature of the light absorber and scattering agent added. Within the above curing time range, on the one hand, sufficient time can be provided for uniform dispersion operations such as stirring, and on the other hand, the sedimentation of the absorbing agent and / or scattering agent can be prevented, so as to obtain a biomimetic material with uniform optical properties.
[0045] The curable resin can be any suitable thermosetting resin, UV curable resin, room temperature curable resin, and the like. A room temperature curing resin is preferably used, wherein the curing agent and the accelerator are preferably added in an amount of 3-5 μL of curing agent: accelerator: 5-10 μL per gram of the room temperature...
Embodiment 1
[0069] Embodiment 1 prepares absorption coefficient μ a =5.0cm -1 , scattering coefficient μ s =20cm -1 Optical biomimetic model matrix resin:
[0070] The HR-8142 crystal resin produced by Changzhou Huarun Composite Materials Co., Ltd. was used as the matrix material of the bionic model. Its main components are unsaturated polyester and styrene with a weight ratio of 7:3, and the dynamic viscosity is 0.31-0.52Pa. s (25°C), the gel time is 5.0-9.0min (25°C), and the heat distortion temperature is ≥55°C.
[0071] Accelerator:
[0072] The HR-E5 type accelerator produced by Changzhou Huarun Composite Materials Co., Ltd. is used. Its main components are cobalt isooctanoate styrene and styrene in a weight ratio of 1:9, and the gel time is 7.0-13.0min (25C°).
[0073] Hardener:
[0074] The HR-M type curing agent produced by Changzhou Huarun Composite Materials Co., Ltd. is used. Its main components are methyl ethyl ketone peroxide and styrene in a weight ratio of 1:9 or 2:8,...
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