Dual-curable polysiloxane acrylate resin and preparation method thereof

A technology of polysiloxane acrylate and dual curing, which is applied in chemical instruments and methods, other chemical processes, adhesives, etc., can solve problems such as poor temperature resistance, achieve regular product structure, simple preparation method, and short reaction cycle short effect

Active Publication Date: 2012-04-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a silicone resin containing UV-curable methacryloxy groups and moisture-curable

Method used

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  • Dual-curable polysiloxane acrylate resin and preparation method thereof
  • Dual-curable polysiloxane acrylate resin and preparation method thereof
  • Dual-curable polysiloxane acrylate resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 5 parts of methacryloxypropyltrimethoxysilane, 10.0 parts of hydroxy-terminated silicone oil, 100 parts of toluene and 1.25wt% of hydroxy-terminated silicone oil with dibutyl tin dilaurate into a 1000mL three-necked flask, and mix and stir with nitrogen. Reflux reaction at 40°C for 7 hours, reduce pressure to 1.33kPa, remove the solvent by rotary evaporation at 120°C, extract with anhydrous methanol, and continue to vacuum and rotary evaporate the lower layer after centrifugation to obtain a dual-curable polysiloxane acrylate resin with a regular structure. The resin is a transparent liquid that can flow at room temperature.

[0026] Characterize the synthesized products by Fourier infrared spectroscopy (see figure 1 ). figure 1 Shown are the infrared images of dual-curable polysiloxane acrylate resin and raw material hydroxyl-terminated polydimethylsiloxane and methacryloxypropyltrimethoxysilane. It can be seen from the infrared image of the dual-curable polysiloxane ...

Embodiment 2

[0031] Add 100 parts of methacryloxypropyltrimethoxysilane, 10 parts of hydroxy-terminated silicone oil, 100 parts of cyclohexane and 0.1wt% of hydroxy-terminated silicone oil to dibutyl tin dilaurate in a 1000mL three-necked flask, and pass nitrogen gas Mix and stir, reflux and react at 70°C for 6 hours, reduce pressure to 1.33kPa, remove the solvent by rotary evaporation at 80°C, extract with anhydrous methanol, continue centrifugation and continue vacuum rotary evaporation to obtain a regular structure of polysiloxane acrylate resin. The resin is a transparent liquid that can flow at room temperature.

Embodiment 3

[0033] Add 8 parts of methacryloxypropyl trimethoxysilane, 10.0 parts of hydroxy-terminated silicone oil, 100 parts of cyclohexane and 1.25wt% of organic titanium with hydroxy-terminated silicone oil in a 1000mL three-necked flask, and mix and stir with nitrogen at 65℃ Reflux the reaction for 6 hours. After the reaction, use molecular distillation equipment to distill at 50 Pa and 100° C. to obtain a polysiloxane acrylate resin with a regular structure. The resin is a transparent liquid that can flow at room temperature.

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Abstract

The invention discloses dual-curable polysiloxane acrylate resin and a preparation method thereof, belonging to the technical field of ultraviolet light/moisture dual-curing of organosilicone. The dual-curable polysiloxane acrylate resin has a structural formula (shown as a drawing), wherein R1 is a formula (shown as a drawing), and R2 is OCH3. The preparation method comprises the following stepsof: under the protection of N2, mixing terminal hydroxyl polydimethylsiloxane with methacryloxy propyl trimethoxy silane, adding a solvent and a catalyst, and carrying out an ester exchange reaction to obtain a preproduct; carrying out rotary steaming to remove the solvent, and obtaining a mixture; and at room temperature, extracting by using anhydrous methanol, carrying out centrifugation, further, removing a solvent, and obtaining the dual-curable polysiloxane acrylate resin. The resin is clear and transparent and has good stability for reserving at normal temperature; and the preparation method is simple, short in cycle, and low in cost, and the resin per se does not contain an organic solvent.

Description

Technical field [0001] The invention relates to a transparent and dual-curable polysiloxane acrylate resin at normal temperature and a preparation method thereof, and belongs to the technical field of organic silicon ultraviolet light / moisture dual curing. Background technique [0002] Polysiloxane resin (also called silicone resin) is a general term for a type of polymer in which silicon atoms and oxygen atoms are alternately connected to form a skeleton, and different organic groups are connected to silicon atoms. Polysiloxane resin contains both "organic group" and "inorganic structure". This special composition and molecular structure make it integrate the characteristics of organic matter and the function of inorganic matter. Due to the long Si-O bond length , The bond angle is large, the Si-O main chain is extremely flexible and other structural characteristics, so that it has a series of excellent properties that other materials can’t compare, not only can withstand high t...

Claims

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Application Information

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IPC IPC(8): C08G77/38C09J183/07C09K3/10
Inventor 张军营甘禄铜
Owner BEIJING UNIV OF CHEM TECH
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