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

Cleaning fluid for residual micro-powder after sand blasting treatment of injection molding part of notebook computer shell

A notebook computer, sandblasting technology, applied in the directions of detergent compounding agent, detergent composition, organic cleaning composition, etc., can solve the problems of difficult to clean, difficult to clean, and inability to clean micron-sized fine powder, etc., To achieve the effect of shortening cleaning time, facilitating installation and ensuring cleaning effect

Inactive Publication Date: 2017-12-08
ANHUI SHENGLI PRECISION MFG TECH CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although sand cleaning is required after sand blasting, the micron-sized powder remaining on the surface of the shell is difficult to clean, and there are dozens of threaded holes with a diameter of less than 3mm inside the computer shell, and the remaining fine powder mixed with water is affected by surface tension. Effects are harder to clean
The traditional cleaning method adopts ultrasonic tank immersion cleaning, and the ultrasonic frequency used is below 40kHz, which cannot clean micron-sized powder

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Heat 10g of anionic polyacrylamide to 110-120°C and grind for 10 minutes, then add 0.5g of polydimethyldiallylammonium chloride and 0.5g of cetyl alcohol, and continue to grind at 110-120°C 30min to obtain modified polyacrylamide;

[0020] (2) Add 3g of molecular sieve micropowder and 1g of polyaspartic acid to 5g of polyethylene oxide, heat to 120-130°C and grind for 15 minutes, then add modified polyacrylamide, mix well, and naturally cool to room temperature to obtain Enhancement additives;

[0021] (3) Add reinforcement additives to 200g water, heat up to reflux state and keep stirring for 15min, then add 25g hydroxypropyl starch ether / polyglutamic acid, continue to keep stirring under reflux state for 10min, wait for natural cooling to room temperature, That is the cleaning solution.

[0022] Preparation of hydroxypropyl starch ether / polyglutamic acid: add deionized water dropwise to 5g hydroxypropyl starch ether under grinding until completely dissolved, hea...

Embodiment 2

[0025] (1) Heat 5g of anionic polyacrylamide to 110-120°C and grind for 5 minutes, then add 0.3g of polydimethyldiallylammonium chloride and 0.2g of cetyl alcohol, and continue to grind at 110-120°C 30min to obtain modified polyacrylamide;

[0026] (2) Add 3g of molecular sieve micropowder and 1g of polyaspartic acid to 3g of polyethylene oxide, heat to 120-130°C and grind for 10 minutes, then add modified polyacrylamide, mix well, and cool naturally to room temperature to obtain enhancer;

[0027] (3) Add reinforcing agent to 200g water, heat up to reflux state and keep stirring for 10min, then add 20g hydroxypropyl starch ether / polyglutamic acid, continue to keep stirring under reflux state for 5min, wait for natural cooling to room temperature, That is the cleaning solution.

[0028] Preparation of hydroxypropyl starch ether / polyglutamic acid: add deionized water dropwise to 10g hydroxypropyl starch ether under grinding until completely dissolved, heat up to 60-70°C and k...

Embodiment 3

[0052] Utilize respectively embodiment 1, embodiment 2, comparative example 1, comparative example 2, comparative example 3, the cleaning solution of comparative example 4 system under the assistance of ultrasonic waves to the residual micropowder after the sandblasting treatment of the same batch of notebook computer shell injection molded parts with the same specification Clean and measure the micropowder removal rate, the results are shown in Table 1, and the blank control example 5 under the same ultrasonic treatment time is set.

[0053] Table 1 The cleaning effect of the cleaning solution made by the embodiment of the present invention

[0054] group

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses cleaning fluid for residual micro-powder after sand blasting treatment of an injection molding part of a notebook computer shell and relates to the technical field of machining of the notebook computer shell. The cleaning fluid is prepared from the following raw materials in parts by weight: 15 to 25 parts of hydroxypropyl starch ether / polyglutamic acid, 5 to 10 parts of anionic polyacrylamide, 3 to 5 parts of polyethylene oxide, 3 to 5 parts of molecular sieve micro-powder, 1 to 3 parts of polyaspartic acid, 0.1 to 0.5 part of poly(diallyldimethylammonium chloride), 0.1 to 0.5 part of cetyl alcohol and 150 to 200 parts of water. The cleaning fluid disclosed by the invention is suitable for cleaning the residual micro-powder after the sand blasting treatment of the injection molding part of the notebook computer shell, and the micro-powder which is remained on the surface of the injection molding part and in a threaded hole is efficiently cleaned under the assistance of ultrasonic waves; the cleaning rate reaches 99.8 percent or more.

Description

Technical field: [0001] The invention relates to the technical field of notebook computer shell processing, in particular to a micropowder cleaning solution remaining after sandblasting of injection molded parts of a notebook computer shell. Background technique: [0002] With the continuous improvement of people's living standards, the demand for notebook computers is also increasing. At present, the laptop casing is usually formed by injection molding. After injection molding, in order to ensure the safety of users, it is necessary to vacuum-coat an electromagnetic radiation barrier film on the inner wall of the computer casing to eliminate the damage of electromagnetic waves. Since the surface of the injection-molded computer case is smooth, it is not conducive to the combination of the electromagnetic radiation barrier film and the surface of the computer case needs to be sandblasted. [0003] Although sand cleaning is required after sand blasting, the micron-sized powd...

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 Applications(China)
IPC IPC(8): C11D1/83C11D3/60C11D3/37C11D3/12C11D3/30C11D3/18
CPCC11D1/83C11D1/10C11D1/662C11D1/72C11D3/12C11D3/181C11D3/30C11D3/3773
Inventor 刘晓春
Owner ANHUI SHENGLI PRECISION MFG TECH CO LTD