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

Micro-ablation light phenolic resin and preparation method thereof

A technology of phenolic resin and barium phenolic resin, which is applied in the field of micro-ablation light phenolic resin and its preparation, can solve the problem of high density, poor ablation resistance, and reduced heat transfer of anti-heat insulation integrated resin-based ablation materials and other problems, to achieve the effect of improving shear resistance, reducing material density, and improving ablation resistance

Inactive Publication Date: 2019-07-19
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
View PDF7 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application CN201810372140.X discloses an anti-heat insulation integrated resin composition, an anti-heat insulation integrated resin-based ablation material and a preparation method thereof. The composition comprises 100 parts by weight of phenolic resin, ceramic 10-20 parts of fillers, 5-15 parts of hollow microspheres and an appropriate amount of modifiers. In this patent application, ceramic fillers with anti-ablation effect and hollow microspheres with lower heat transfer effects are added to the phenolic resin containing modifiers. Microspheres, an integrated heat-insulating resin composition that integrates heat-resistant and heat-insulating capabilities has been obtained, but the heat-insulating integrated resin-based ablation material prepared by using this composition has the highest carbon residue rate at 600 ° C It can only reach 72.9%, the ablation resistance is poor, and the density of the anti-heat insulation integrated resin-based ablation material is relatively high

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
  • Micro-ablation light phenolic resin and preparation method thereof
  • Micro-ablation light phenolic resin and preparation method thereof
  • Micro-ablation light phenolic resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The present invention provides the preparation method of the micro-ablation light phenolic resin described in the first aspect of the present invention in a second aspect, the method may further comprise the steps:

[0041] (1) Mix 5-15 parts of hollow phenolic microspheres, 3-8 parts of nano-titanium dioxide, 5-20 parts of hollow glass microspheres and 5-15 parts of zirconium diboride to obtain a mixed filler, and then mix the mixed filler Equally divided into multiple parts of equal weight (two parts or more);

[0042] (2) Add 0.3 to 0.8 parts of toughening agent to 100 parts of phenolic resin and stir evenly to obtain a mixture;

[0043] (3) Add multiple parts of the mixed fillers obtained in step (1) into the mixture obtained in step (2) successively and stir evenly to obtain a slightly ablated light phenolic resin.

[0044] In particular, "parts" in the present invention refer to parts by weight.

[0045] The present invention adopts this method of dividing the m...

Embodiment 1

[0057] ①Weigh 50g of hollow phenolic microbeads, 50g of nano-titanium dioxide, 50g of hollow glass microspheres, and 50g of zirconium diboride and put them into a container, stir and pre-mix for 0.5h with a stirring paddle to obtain a mixed filler, and then divide the mixed filler into equal parts. 3 parts by weight are for use; wherein, the hollow glass microspheres are selected from low melting point hollow glass microspheres with a melting temperature of 400-600°C.

[0058] 2. take by weighing the barium phenolic resin after the preheating treatment of 1kg and pour in the reactor after the preheating, then add 5g toughening agent, fully stir 20min, so that be dissolved in the described barium phenolic resin matrix completely, obtain mixture.

[0059] ③ Add the mixed fillers in step ② to the mixture obtained in step ② in sequence, and divide them into 3 parts, and stir for 15 minutes each time, until finally all the mixed fillers are added, and the resin composition is stirre...

Embodiment 2

[0062] ① Weigh 100g of hollow phenolic microbeads, 50g of nano-titanium dioxide, 100g of hollow glass microspheres, and 100g of zirconium diboride into a container, and use a stirring paddle to stir and pre-mix for 0.5h to obtain a mixed filler, and then divide the mixed filler into equal parts. 3 parts by weight are for use; wherein, the hollow glass microspheres are selected from low melting point hollow glass microspheres with a melting temperature of 400-600°C.

[0063] 2. take by weighing the barium phenolic resin after the preheating treatment of 1kg and pour in the reactor after the preheating, then add 5g toughening agent, fully stir 20min, so that be dissolved in the described barium phenolic resin matrix completely, obtain mixture.

[0064] ③ Add the mixed fillers in step ② to the mixture obtained in step ② in sequence, and divide them into 3 parts, and stir for 15 minutes each time, until finally all the mixed fillers are added, and the resin composition is stirred e...

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

PropertyMeasurementUnit
Melting temperatureaaaaaaaaaa
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to micro-ablation light phenolic resin and a preparation method thereof. The micro-ablation light phenolic resin consists of the following components in parts by weight: 100 parts of phenolic resin, 5-15 parts of hollow phenolic microspheres, 3-8 parts of nano titanium dioxide, 5-20 parts of hollow glass microspheres, 5-15 parts of zirconium diboride and 0.3-0.8 part of a toughening agent. The preparation method comprises the following steps: uniformly mixing hollow phenolic microspheres, nano titanium dioxide, hollow glass microspheres and zirconium diboride to obtain amixed filler, and equally dividing the mixed filler into a plurality of equal parts by weight; adding a toughening agent into the phenolic resin, and conducting uniform stirring to obtain a mixture; and sequentially adding the plurality of parts of mixed filler into the mixture, and conducting uniform stirring to prepare the micro-ablation light phenolic resin. On the premise that the density of the material is reduced, the ablation resistance of the material is remarkably improved, and the micro-ablation light phenolic resin is low in density and excellent in ablation resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, in particular to a micro-ablation light phenolic resin and a preparation method thereof. Background technique [0002] The polycondensation products of phenols and aldehydes are commonly known as phenolic resins. Phenolic resin is the first synthetic resin to realize industrial production in the world, and has a history of more than one hundred years so far. Phenolic resin is still used as a resin-based ablation-resistant material because of its excellent mechanical properties, heat resistance, cold resistance, dimensional stability, molding processability, flame retardancy, low smoke and low production cost. Main base resin. The high-temperature-resistant heat-resistant and ablation-resistant materials made of phenolic resin as the matrix resin have been widely used in aerospace and other cutting-edge defense technology fields. [0003] The thermal protection system (Thermal Prot...

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
IPC IPC(8): C08L61/06C08L61/14C08K7/28C08K3/22C08K3/38
CPCC08L61/06C08L2205/025C08L2205/03C08L2205/20C08L2201/08C08L2201/02C08K2003/2241C08K2201/011
Inventor 谢永旺鲍凯夏雨许孔力许学伟
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH