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

Water-based solder resist and preparation method thereof

A solder resist, water-based technology, applied in the field of water-based solder resist and its preparation, to achieve good fluidity and drying effect, good adhesion and cost-effective effect

Inactive Publication Date: 2019-10-01
佛山市创渡科技有限公司
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the existing solder resists in the United States, and provide a water-based solder resist and its preparation method. The solder resist avoids the risk of silicon atoms corroding aluminum alloys, and its fluidity, drying effect and cohesive force meet the national standards Requirements and performance meet industry standards and engineering requirements

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
  • Water-based solder resist and preparation method thereof
  • Water-based solder resist and preparation method thereof
  • Water-based solder resist and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A preparation method of water-based solder resist, comprising the following steps:

[0047] Preparation of mother liquor: Take 38 parts of titanium dioxide and 46 parts of water, mix them evenly in a stainless steel stirring container at a speed of 30 RPM, stir for 30 minutes, add 13 parts of acrylic acid emulsion, and continue stirring for 30 minutes;

[0048] Preparation of suspending agent: Take 6 parts of methylcellulose (viscosity 50,000), 94 parts of water at 100 degrees Celsius, stir in a stainless steel container at a speed of 30 RPM, and stir for ten minutes.

[0049] Add the suspension into the mother liquor, continue stirring at a speed of 40 RPM, add the remaining materials respectively, and keep stirring for 2 hours to obtain a water-based solder resist.

Embodiment 2

[0051] Experimental effect comparison:

[0052] Experimental materials: solder resist of the present invention and existing solder resist

[0053] The materials to be coated in the experiment are 0.07 mm thick nickel alloy strip and 20 mm diameter 304 stainless steel pipe, and the coated surface is smooth.

[0054] Test method and results: Use a brush to coat two kinds of solder resist materials on the surface of the nickel alloy strip; respectively coat two kinds of solder resist materials on the surface of the stainless steel tube, and the nickel alloy strip with a thickness of 0.07 mm represents the winding tape of the electronics industry Material, diameter 20mm304 stainless steel tube Aluminum alloy fixture in the automotive industry (fixture function: clamp the tooling of the product before welding, so that there is contact between the aluminum alloy parts of the auto parts to be welded, and create the necessary conditions for the formation of contacts during the brazing...

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 provides a water-based solder resist and a preparation method thereof. The water-based solder resist is water-based paint, toxic-free and non-inflammable, wherein nano titanium dioxide plays a main solder resisting role; nano-scale titanium dioxide is excellent in activity and adhesion property; acrylic emulsion is a film-forming agent and plays an adhesion role; and hydroxypropyl methyl cellulose is a suspending agent. The preparation method of the water-based solder resist comprises the following steps: S1, preparing mother solution: uniformly mixing titanium dioxide and waterin a stainless steel stirring container, and adding acrylic emulsion to continuously stir; S2, preparing the suspending agent: stirring hydroxypropyl methyl cellulose and water in a stainless steel container; and S3, adding thesuspending agent in the mother solution, continuously stirring, adding the rest components separately, and keeping stirring until the uniformity is qualified. The water-based solder resist avoids the risk that the silicon atom corrodes aluminium alloy; the fluidity, the drying effect and the cohesive force of the water-based solder resist meet the requirements of the national standards; and the performance of the water-based solder resist meets the industrial standard and the engineering using requirements.

Description

technical field [0001] The present invention generally relates to the technical field of solder resist, in particular to a water-based solder resist and a preparation method thereof. Background technique [0002] In aluminum alloy flame brazing, solder resist is mainly used in the following aspects: 1. During the brazing process of continuous brazing furnace, it protects the parts that do not need to be brazed, and prevents the solder from flowing to the position that does not need to be welded; 2. And protect parts that do not need to be brazed during vacuum brazing; 3. High temperature heat treatment, high temperature bonding of protective components, heat treatment in the electronics industry, etc. [0003] At present, most of the current solder resists are imported from abroad, and most types of solder resists contain talcum powder, which has the potential risk of silicon atoms corroding aluminum alloys. Therefore, there is an urgent need to develop a solder resist that...

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): B23K35/363
CPCB23K35/3612B23K35/362
Inventor 钟仙金
Owner 佛山市创渡科技有限公司