A semi-closed cage-like trifunctional epoxy ether-based POSS composite material, coating and preparation method

An epoxy resin coating, T7EP-POSS technology, applied in the direction of epoxy resin coating, coating, etc., can solve the problem of high crosslinking density of the system, achieve heat resistance stability and dielectric properties improvement, good transparency, Avoid the effect of decreased flexibility

Active Publication Date: 2021-01-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the cage-shaped eight-armed epoxy-based POSS is used in the hybridization of epoxy resin, the cross-linking density of the system is too large and the system is brittle, etc., the present invention discloses a semi-closed cage-shaped trifunctional epoxy ether group Silosesquioxane (T 7 3EP -POSS) combination material and its hybrid epoxy resin coating, the preparation method of coating, for this reason, the present invention has taken following technical scheme:

Method used

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  • A semi-closed cage-like trifunctional epoxy ether-based POSS composite material, coating and preparation method
  • A semi-closed cage-like trifunctional epoxy ether-based POSS composite material, coating and preparation method
  • A semi-closed cage-like trifunctional epoxy ether-based POSS composite material, coating and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Semi-closed cage trifunctional epoxy ether group POSS——tris[(2,3-epoxypropoxy)polyoxyethylene polyoxypropylene ether group]isooctyl oligomeric silsesquioxane composite material Synthesis

[0036] First, in a 50mL three-neck flask equipped with a reflux condenser, a thermometer, and a stirrer, successively weigh 3.55g (0.003mol) of the structure shown in formula (1), R=i-C 8 h 17 The semi-closed cage isooctyl heptasilsesquioxane trisilanol [iC 8 -T 7 (OH) 3 ] and 14.2g ethanol solvent, stirring and dissolving and making the dilute solution that mass concentration is 20%, then add 0.91g (0.009mol) triethylamine (acid-binding agent: T 7 (OH) 3 molar ratio=3:1), stir and mix well, adjust the temperature of the system to about 0°C with ice-salt bath cooling, add 1.16g (0.009mol) dimethyl monochlorosilane (DMCS) dropwise while stirring, iC in the system 8 -T 7 (OH) 3 The molar ratio of DMCS to DMCS is 1:3, use an ice-salt bath to maintain the system temperature at...

Embodiment 2

[0042] (1) Semi-closed cage trifunctional epoxy ether based POSS——tris[(2,3-epoxypropoxy) polyoxyethylene polyoxypropylene ether based] isobutyl oligomeric silsesquioxane composite material Synthesis

[0043]First, in a 50mL three-neck flask equipped with a reflux condenser, a thermometer, and a stirrer, successively weigh 3.96g (0.005mol) of the structure shown in formula (1), R=i-C 4 h 9 The semi-closed cage isobutyl heptasilsesquioxane trisilanol iC 4 -T 7 (OH) 3 And 75.24g tetrahydrofuran solvent, stirring and dissolving and making mass concentration is the dilute solution of 5%, then adds 3.03g (0.03mol) triethylamine (acid-binding agent: T 7 (OH) 3 Molar ratio = 6:1) Stir and mix well, adjust the temperature of the system to about 5°C with an ice-salt bath, then add 6.45g (0.05mol) dimethyl monochlorosilane (DMCS) dropwise while stirring, the iC in the system 4 -T 7 (OH) 3 The molar ratio of DMCS to DMCS is 1:10, and the temperature of the system is kept at 5°C w...

Embodiment 3

[0049] (1) Semi-closed cage trifunctional epoxy (polyether)-based POSS——tris[(2,3-epoxypropoxy)polyoxyethylene polyoxypropylene ether group]phenyl oligomeric silsesquioxane Synthesis of composite materials

[0050] First, in a 50mL three-neck flask equipped with a reflux condenser, a thermometer, and a stirrer, successively weigh 3.30g (0.0035mol) of semi-closed caged phenyl heptamer with the structure shown in formula (1) and R=ph Silsesquioxane Trisilanol [ph-T 7 (OH) 3 ] and 18.7g chloroform solvent, stirring and dissolving and making the dilute solution that mass concentration is 15%, then add 1.15g (0.0105mol) triethylamine (acid-binding agent: ph-T 7 (OH) 3 Molar ratio = 4:1) Stir and mix well, heat to adjust the temperature of the system to about 30°C, then add 2.25g (0.0175mol) dimethyl monochlorosilane (DMCS) dropwise while stirring, the ph-T in the system 7 (OH) 3 The molar ratio of DMCS to DMCS is 1:5, and the system temperature is maintained at 30°C for contin...

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Abstract

The invention provides a semi-enclosed cage-like trifunctional epoxy ether-based POSS composite material, a coating and a preparation method thereof. 7 EP ‑POSS and spacer α, ω‑diepoxy polyether EPE. The semi-closed cage-like trifunctional epoxy ether-based POSS composite material, epoxy resin, leveling agent, and reactive diluent are blended to form a semi-closed cage-like trifunctional epoxy ether-based POSS hybrid epoxy resin The coating is then cured under the action of an organic amine to obtain a trifunctional epoxy ether-based POSS hybrid epoxy resin coating. Compared with the unmodified epoxy resin coating, the epoxy resin coating hybridized with the trifunctional epoxy ether group POSS of the present invention has good transparency, heat resistance stability and dielectric properties are beneficially improved.

Description

technical field [0001] The invention belongs to the field of functional epoxy resin coatings, and in particular relates to a semi-closed cage-like trifunctional-tris(2,3-glycidyloxypropoxyether-based) oligomeric silsesquioxane composite material, coating and its miscellaneous materials. Method for preparing epoxy resin coating. Background technique [0002] Cage oligomeric silsesquioxane, referred to as POSS, with -SiO 3 / 2 -As a skeleton, and there are reactive or non-reactive organic groups at the corners of the molecule, so as a typical inorganic-organic nano-hybrid material, it not only has good compatibility with organic materials, but also has excellent heat resistance , flame retardant and reinforcing functions, so POSS is used for epoxy resin modification, while maintaining the performance advantages of traditional epoxy resins such as good adhesion performance, wear resistance, mechanical properties, etc., it can also improve epoxy resin performance. The heat and w...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09D163/00C09D7/65
Inventor安秋凤罗云杨博文安一鸣黄良仙
OwnerSHAANXI UNIV OF SCI & TECH