Hollow glass bead and polyurethane cooperated-modified unsaturated polyester composite material and preparation method thereof

A technology of hollow glass microspheres and polyester composite materials, applied in the field of hollow glass microspheres and polyurethane synergistically modified unsaturated polyester composite materials and its preparation, can solve the problem of low density, high toughness, hollow glass microspheres and unsaturated polyester Saturated resin has poor compatibility and other problems, and achieves the effect of good density and improved bonding strength

Inactive Publication Date: 2017-09-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the above deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a composite material of hollow glass microspheres and polyurethane synergistically modified unsaturated polyester and a preparation method thereof. The problem of poor compatibility of saturated resins makes the prepared composite materials have the characteristics of low density and high toughness under the condition of maintaining strength

Method used

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  • Hollow glass bead and polyurethane cooperated-modified unsaturated polyester composite material and preparation method thereof
  • Hollow glass bead and polyurethane cooperated-modified unsaturated polyester composite material and preparation method thereof
  • Hollow glass bead and polyurethane cooperated-modified unsaturated polyester composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment example 1

[0034] (1) Heat 5.4g of hollow glass microspheres in 0.3mol / L NaOH solution to 80°C while stirring for 1h, then wash with distilled water until neutral, filter and dry, and set aside;

[0035] (2) Heat the surface hydroxylated hollow glass microspheres obtained in step (1) to 80° C. in the prepared KH-550 solution, while stirring for 2 hours, then wash with absolute ethanol while suction filtration under reduced pressure, drying to obtain hollow glass microspheres with surface amination;

[0036] (3) Vacuum dehydrate 16.7g of polyethylene glycol 400 at 120°C for 3 hours, cool down to 70°C, add 4.5g of hollow glass microspheres obtained in step (2), stir mechanically for 30min, and then slowly add the mixture to 8.8g of TDI In -80, add 2 drops of dibutyltin dilaurate, control the temperature of the system at about 40-50 ° C, react for 1 h under nitrogen protection, and measure the content of -NCO with di-n-butylamine-toluene solution and Hcl-H2 O solution. Measure once every 3...

Embodiment example 2

[0039] (1) Heat 14.5g of hollow glass microspheres in 0.3mol / L NaOH solution to 80°C while stirring for 1h, then wash with distilled water until neutral, filter and dry, and set aside;

[0040] (2) Heat the surface hydroxylated hollow glass microspheres obtained in step (1) to 80° C. in the prepared KH-791 solution, while stirring for 2 hours, then wash with absolute ethanol while suction filtration under reduced pressure, drying to obtain hollow glass microspheres with surface amination;

[0041] (3) 27.4g of polypropylene glycol 400 was vacuum dehydrated at 120°C for 3h, cooled to 70°C and added with 9.8g of hollow glass microspheres obtained in step (2), mechanically stirred for 30min, and then the mixture was slowly added dropwise to 20.6g of Add 3 drops of stannous octoate solution to phenylmethane diisocyanate, control the temperature of the system at about 40-50°C, react for 1 hour under the protection of nitrogen, and measure the content of -NCO with di-n-butylamine-to...

Embodiment example 3

[0044] (1) Heat 26.0 g of hollow glass microspheres in 0.3 mol / L NaOH solution to 80 °C while stirring for 1 h, then wash with distilled water until neutral, filter and dry, and set aside;

[0045] (2) Heat the surface hydroxylated hollow glass microspheres obtained in step (1) to 80° C. in the prepared KH-550 solution, while stirring for 2 hours, then wash with absolute ethanol while suction filtration under reduced pressure, drying to obtain hollow glass microspheres with surface amination;

[0046] (3) 25.4g of polyethylene glycol 400 and 7.7g of polypropylene glycol 400 were vacuum dehydrated at 120°C for 3h, cooled to 75°C and added with 10.5g of hollow glass microspheres obtained in step (2), mechanically stirred for 30min, and then Slowly add the mixture to 8.7g TDI-80, add 3 drops of dibutyltin dilaurate, control the temperature of the system at about 40-50°C, react for 1h under the protection of nitrogen, and use di-n-butylamine-toluene solution and Hcl-H2 0 solution ...

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Abstract

The invention discloses a hollow glass bead and polyurethane cooperated-modified unsaturated polyester composite material and a preparation method thereof. The composite material is prepared from the following ingredients in parts by weight: 100 parts of unsaturated polyester resin, 15-40 parts of hollow glass bead-polyurethane prepolymer, 5-10 parts of diluent styrene, 1.5-3 parts of initiator methylethyl ketone peroxide, 0.3-0.6 part of accelerant cobalt naphthenate and 0.3-0.6 part of antifoamer simethicone. The prepared composite material has good mechanical strength and toughness while the density is effectively lowered, and meanwhile, the composite material further has special properties such as heat insulation, heat preservation and silencing.

Description

technical field [0001] The invention relates to a hollow glass microsphere and polyurethane synergistically modified unsaturated polyester composite material and a preparation method thereof. Background technique [0002] Due to the advantages of good comprehensive performance, low cost, and convenient curing, unsaturated polyester resin has been widely used as a resin matrix in the field of composite materials, but due to the limitations of its poor toughness, high shrinkage, and insufficient heat resistance, it The scope of application is greatly limited. [0003] Hollow glass microspheres have the characteristics of low density, low thermal conductivity, high dispersion, and high compressive strength. They are often used as reinforcing fillers for resin matrices, but they have problems of poor compatibility with unsaturated polyester resins and weak interfacial bonding strength. , even if the general modification method is used to treat the surface with a coupling agent,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L75/08C08K9/10C08K9/06C08K7/28
CPCC08L67/06C08L2205/03C08L2205/04C08L75/08C08K9/10C08K9/06C08K7/28
Inventor 秦岩李冬冰边玉伟
Owner WUHAN UNIV OF TECH
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