Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of double poss polyether hybrid PMMA resin and its preparation and molding method

A technology of polyether and hybridization, which is applied in the field of molding, double POSS polyether hybrid PMMA resin and its preparation, to achieve the effects of overcoming the large exothermic effect, improving scratch resistance, and transparent appearance

Active Publication Date: 2021-01-29
SHAANXI UNIV OF SCI & TECH
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, literature search shows that the oligomeric silsesquioxane used for acrylic resin hybridization is mainly cage-like methacrylate-based POSS (such as single-arm methacrylate-based POSS or eight-arm methacrylate-based POSS) , vinyl POSS (such as octavinyl POSS), non-reactive methyl POSS or phenyl POSS, etc., but the performance of PMMA has not yet been improved by hybridizing thermoplastic polymethyl methacrylate resin with double POSS polyether with a new structure see the report

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of double poss polyether hybrid PMMA resin and its preparation and molding method
  • A kind of double poss polyether hybrid PMMA resin and its preparation and molding method
  • A kind of double poss polyether hybrid PMMA resin and its preparation and molding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038](1) Double POSS polyether-preparation of bis (heptaisobutyl POSS) polyoxypropylene ether

[0039]In a 100mL three-necked flask equipped with a thermometer, a reflux condenser, and a stirrer, weigh 3.95g (0.005mol) of semi-closed cage isobutyl heptasilsesquioxane trisilanol [iBu-T7(OH)3] And 35.55g chloroform, stir and dissolve to make iBu-T7(OH)3A dilute solution with a mass concentration of 10%, and then add dropwise 1.29g (0.0025mol) synthesized in Table 1 a=0, b=3, a+b=3, Mn about 516, the structural formula is (CH3O)3SiC3H6O(C3H6O)3C3H6Si(OCH3)3Α,ω-bis(trimethoxysilylpropyl) polyoxypropylene ether (PECA-1) and 2 drops of dibutyltin dilaurate catalyst, iBu-T in the system7(OH)3The molar ratio with PECA-1 is 1:0.5, stir and mix well, then, control the temperature at 20°C for continuous polycondensation reaction for 24 hours. After the reaction is over, the solvent is evaporated under reduced pressure to obtain a total of about 5.24g. The structure is shown in formula (1) , R=iC...

Embodiment 2

[0043](1) Double POSS polyether-preparation of bis (heptaphenyl POSS) polyoxyethylene polyoxypropylene ether

[0044]In a 100mL three-necked flask equipped with a thermometer, reflux condenser and agitator, weigh 3.73g (about 0.004mol) of semi-closed cage phenyl heptasilsesquioxane trisilanol [ph-T7(OH)3] And 14.92g tetrahydrofuran, stir and dissolve to make ph-T7(OH)3A dilute solution with a mass concentration of 20% is heated to 60°C, and then 3.18g (about 0.002mol) synthesized in Table 1 is added dropwise a=18, b=7, a+b=25, Mn about 1625, and the molecular formula is (C2H5O)3SiC3H6O(C2H4O)18(C3H6O)7C3H6Si(OC2H5)3Α,ω-bis(triethoxysilylpropyl) polyoxyethylene polyoxypropylene ether (PECA-2) and 2 drops of dioctyltin dilaurate catalyst, ph-T in the system7(OH)3The molar ratio with PECA-2 is 1:0.5, stir and mix well, then, control the temperature at 60°C for continuous polycondensation reaction for 2h. After the reaction is over, the solvent is evaporated under reduced pressure to obtai...

Embodiment 3

[0048](1) Double POSS polyether-preparation of bis (heptaisooctyl POSS) polyoxyethylene polyoxypropylene ether

[0049]In a 100mL three-necked flask equipped with a thermometer, reflux condenser, and stirrer, weigh 3.55g (0.003mol) of semi-closed cage-shaped isooctyl heptasilsesquioxane trisilanol [iO-T7(OH)3] And 20.12g acetone, stir and dissolve to make iO-T7(OH)3A dilute solution with a mass concentration of 15% is heated to 30°C, and then 1.24g (about 0.0015mol) synthesized in Table 1 is added dropwise a=7, b=3, a+b=10, Mn about 824, and the molecular formula is ( CH3O)3SiC3H6O(C2H4O)7(C3H6O)3C3H6Si(OCH3)3Α,ω-bis(trimethoxysilylpropyl) polyoxyethylene polyoxypropylene ether (PECA-3) and 1 drop of dibutyltin diacetate catalyst, iO-T7(OH)3The molar ratio with PECA-3 is 1:0.5, stir and mix well, then, control the temperature at 30°C for continuous polycondensation reaction for 10 hours. After the reaction is over, the solvent is evaporated under reduced pressure to obtain a total of a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a double POSS polyether hybrid polymethyl methacrylate (PMMA) resin and a processing and molding method thereof. For this reason, the present invention at first semiclosed cage oligomeric silsesquioxane trisilanol T 7 (OH) 3 Condensation polymerization with hexafunctional silane coupling agent - α, ω-bis(trialkoxysilylpropyl) polyether PECA under the action of an organotin catalyst to form α, ω-bis POSS polyether (DPPE), and then DPPE is blended with methyl methacrylate MMA, initiator and plasticizer, etc., and then free radical copolymerized and formed by secondary reaction, so as to obtain double POSS polyether hybrid PMMA resin with transparent appearance. The application shows that, compared with the unmodified PMMA resin, the double POSS polyether hybrid PMMA resin of the present invention has beneficially improved scratch resistance and heat resistance stability.

Description

Technical field[0001]The invention belongs to the field of functional resins, and specifically relates to a double POSS polyether hybrid PMMA resin and a preparation and molding method thereof.Background technique[0002]Oligomeric silsesquioxane, the skeleton contains -RSiO3 / 2-The chain link and structure can be network or cage, which is a typical semi-inorganic-semi-organic molecule. The cage-like oligomeric silsesquioxane (POSS), in addition to having the structural characteristics of oligomeric silsesquioxane, is also connected with organic groups at the corners, so it is not only compatible with organic materials, but also has good Heat stability and chemical stability, and used in the hybridization of organic materials, can also improve the flame retardancy and heat stability of organic materials, and improve the physical and mechanical properties and hardness of organic materials.[0003]Polymethyl methacrylate (PMMA), commonly known as (acrylic) plexiglass, is a thermoplastic or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08L83/12C08K5/12C08G77/46C08F120/14
CPCC08F120/14C08G77/46C08L33/12C08L2201/08C08L2201/10C08L83/12C08K5/12
Inventor 安秋凤王玉峰吕竹筠黄良仙许伟郝丽芬
Owner SHAANXI UNIV OF SCI & TECH