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Processing technology for improving warping defect of plastic building formwork

A technology of building formwork and processing technology, which is applied to the preparation of building components on site, construction, building construction, etc. It can solve the problems of affecting the quality of plastic formwork, excessive heat loss on the surface, uneven temperature distribution, etc., and achieve temperature gradient The effect of reducing the difference, reducing the amount of warpage, and reducing the occurrence of warpage defects

Inactive Publication Date: 2021-02-23
界首市晟翔新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this process, the temperature distribution on the inner and outer surfaces of the plastic formwork is uneven, and the surface heat is lost too quickly, which can easily lead to warping defects in the plastic formwork, which seriously affects the quality of the plastic formwork.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A processing technology for improving the warping defect of plastic building formwork, the specific technology is as follows:

[0017] 1) According to the volume ratio of 15:1, add absolute ethanol and ammonia water with a mass fraction of 28% into the container, 200W ultrasonic treatment for 2min to mix the solution evenly, under the stirring condition of 600r / min, the volume of absolute ethanol Add 4% tetraethyl orthosilicate dropwise to the solution, the dropping time is controlled at 3min, and react at room temperature for 10h. After the reaction is completed, centrifuge the suspension at 8000r / min for 10min, remove the supernatant, and The precipitated product was repeatedly washed with deionized water until the filtrate was neutral, and dried at 60°C for 12 hours to obtain silica nanospheres;

[0018] 2) According to the mass volume ratio of 20g:5g:30mL, mix the copper powder, stearic acid and absolute ethanol and add them to the ball milling tank, use stainless s...

Embodiment 2

[0024] A processing technology for improving the warping defect of plastic building formwork, the specific technology is as follows:

[0025] 1) According to the volume ratio of 17:1, add absolute ethanol and ammonia water with a mass fraction of 30% into the container, and 250W ultrasonic treatment for 3 minutes to mix the solution evenly. Under the stirring condition of 650r / min, the volume of absolute ethanol Add 5% tetraethyl orthosilicate dropwise to the solution, the dropping time is controlled at 4min, react at room temperature for 12h, after the reaction is finished, centrifuge the suspension at 8500r / min for 13min, remove the supernatant, and The precipitated product was repeatedly washed with deionized water until the filtrate was neutral, and dried at 62°C for 14 hours to obtain silica nanospheres;

[0026] 2) According to the mass volume ratio of 20g:8g:35mL, mix the copper powder, stearic acid and absolute ethanol and add them to the ball milling tank. Use stainle...

Embodiment 3

[0032] A processing technology for improving the warping defect of plastic building formwork, the specific technology is as follows:

[0033] 1) According to the volume ratio of 18:1, add absolute ethanol and ammonia water with a mass fraction of 32% into the container, 300W ultrasonic treatment for 5 minutes to mix the solution evenly, and under the stirring condition of 700r / min, the volume of absolute ethanol 6% tetraethyl tetrasilicate was added dropwise into the solution, the dropping time was controlled at 5min, and the reaction was carried out at room temperature for 13h. After the reaction was completed, the suspension was centrifuged at 9000r / min for 15min, and the supernatant was removed. The precipitated product was repeatedly washed with deionized water until the filtrate was neutral, and dried at 65°C for 15 hours to obtain silica nanospheres;

[0034] 2) According to the mass-volume ratio of 20g:10g:40mL, mix the copper powder, stearic acid and absolute ethanol a...

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Abstract

The invention discloses a processing technology for improving the warping defect of a plastic building formwork, and relates to the technical field of plastic formwork processing. The specific technology comprises the steps of 1) preparing silicon dioxide nanospheres; 2) carrying out ball milling treatment on copper powder; 3) processing to obtain porous metal powder; and 4) kneading and granulating a PC plastic raw material, uniformly mixing the PC raw material and the porous metal powder, adding a mixture into an injection molding machine, carrying out injection molding on obtained plastic melt into a mold, covering the surface of the mold with a layer of mica heat insulation plate after the injection molding is finished, and cooling and solidifying to obtain the required plastic formwork. According to the process method provided by the invention, the shrinkage difference of the plastic formwork can be effectively reduced, and the warping amount of the plastic formwork is reduced, sothat the warping defect in the forming process of the plastic formwork is reduced, and the forming quality of the plastic formwork is improved.

Description

technical field [0001] The invention belongs to the technical field of plastic formwork processing, and in particular relates to a processing technology for improving warping defects of plastic building formwork. Background technique [0002] As a formwork for pouring concrete, building formwork is an important part of concrete projects such as high-rise buildings and infrastructure. At present, the annual use of building formwork in my country far exceeds 650 million square meters. In the process of engineering construction, building formwork accounts for 20-30% of the cost of concrete engineering, and building formwork is used in 50% of the construction period. Since wooden formwork is widely used at present, which has great damage to the ecological environment, high-quality recyclable plastic building formwork is of great significance to construction projects. [0003] In the manufacturing process of plastic building formwork, one of the important factors is the temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C45/17E04G9/05B29L31/00
CPCB29C45/00B29C45/0001B29C45/0013B29C45/0025B29C45/17B29C2045/0091B29L2031/757E04G9/05
Inventor 朱鹏飞
Owner 界首市晟翔新型建材有限公司
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