A kind of high temperature stable coated sand
A high-temperature stable, coated sand technology, used in cores, casting molds, casting molding equipment, etc., can solve the problems of shelling, agglomeration, and low high temperature compressive strength of coated sand, and promote brittle-ductile transition. , Improve the dispersion effect, improve the effect of compressive performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0034] The preparation method of stable modified material A comprises the steps:
[0035] S1. According to the weight fraction, take 20~35 parts of polylactic acid, 2~5 parts of diethanolamine, 1~3 parts of adhesive, 8~13 parts of lanthanum stearate in a mortar and grind at 350~550r / min for 1~3h , to get the grinding material, take the grinding material and mix it in a mixer at 120~140°C for 15~25min, discharge the material, and cool it to room temperature naturally to get the mixing material, take the mixing material according to the mass ratio of 1:5~8 and add it for impregnation mixed liquid, ultrasonically treated in an ultrasonic cleaner at a frequency of 50~65kHz for 12~20min, discharged, filtered, and the collected filter cake was washed with water for 3~5 times, then dried in an oven at 80~100°C to constant weight to obtain a filler;
[0036] S2. At 20~45°C, take bamboo charcoal fiber according to the mass ratio of 8:2~5:1, add N-methylpyrrolidone and calcium stearate ...
Embodiment 1
[0040] Impregnation solution: Mix dopamine hydrochloride and ammonium chloride solution with a mass fraction of 12% at a mass ratio of 1:6 to obtain an impregnation solution.
[0041] Adhesive: Mix cobalt oxide, nickel oxide, and fluorosilicone at a mass ratio of 1:2:3 to obtain an adhesive.
[0042] Additives: Mix epoxidized soybean oil and pentaerythritol in a mass ratio of 3:1 to obtain additives.
[0043] Nano-materials: Mix nano-titanium dioxide, nano-iron powder, and nano-silicon dioxide in a mass ratio of 3:1:2 to obtain nano-materials.
[0044] Modified phenolic resin: mix phenol, formaldehyde solution with a mass fraction of 37%, sodium citrate, and ferrocene at a mass ratio of 1:5:0.3:0.01, and reflux at 90°C for 4 hours to obtain a reaction material. Vacuum dehydration to obtain modified phenolic resin.
[0045] Lubricant: Mix calcium stearate and paraffin wax at a mass ratio of 1:2 to obtain a lubricant.
[0046] Toughening agent: Mix polyvinyl acetate and polyv...
Embodiment 2
[0053] Impregnation solution: Mix dopamine hydrochloride and ammonium chloride solution with a mass fraction of 12% at a mass ratio of 1:8 to obtain an impregnation solution.
[0054] Adhesive: Mix cobalt oxide, nickel oxide, and fluorosilicone in a mass ratio of 1:4:3 to obtain an adhesive.
[0055] Additives: Mix epoxidized soybean oil and pentaerythritol in a mass ratio of 5:1 to obtain additives.
[0056] Nano-material: Mix nano-titanium dioxide, nano-iron powder, and nano-silicon dioxide in a mass ratio of 3:1:4 to obtain nano-material.
[0057] Modified phenolic resin: mix phenol, formaldehyde solution with a mass fraction of 37%, sodium citrate, and ferrocene at a mass ratio of 1:7:0.3:0.01, and reflux at 95°C for 6 hours to obtain a reaction material. Vacuum dehydration to obtain modified phenolic resin.
[0058] Lubricant: Mix calcium stearate and paraffin wax at a mass ratio of 1:3 to obtain a lubricant.
[0059] Toughening agent: Mix polyvinyl acetate and polyvin...
PUM
Property | Measurement | Unit |
---|---|---|
quality score | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com