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Waterborne workshop primer composition
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A shop primer and composition technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as welder health problems, zinc fever, welding, cutting speed and quality effects, reduce zinc powder content, and improve high temperature resistance. performance, the effect of improving welding efficiency
Active Publication Date: 2019-06-28
SHANGHAI ZHENHUA HEAVY IND
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Problems solved by technology
However, due to its high zincpowder content, a large amount of zinc oxide fume will be generated during welding and thermal processing, which will cause great health problems for welders and easily lead to "zinc fever". At the same time, it will have a certain impact on welding and cutting speed and quality.
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Embodiment 1
[0036] One, carry out batching according to the formula in Table 1;
[0037] 2. Add the zinc powder into the powder material mixing device, mix thoroughly, sieve and pack, and obtain the base material. The zinc powder is spherical or flaky low-lead zinc powder with a fineness of 600 mesh.
[0038] 3. Put the potassiumlithiumsilicate solution into the tank, stir at a medium speed, slowly add the special modified emulsion, and control the stirring speed at 500-600r / min. After mixing, stir at a medium speed for 30 minutes, then add water and stir evenly, filter and pack to obtain a curing agent.
Embodiment 2
[0040] One, carry out batching according to the formula in Table 1;
[0041] 2. Add zinc powder and ferro-titanium powder into the powder material mixing device, mix thoroughly, sieve and pack, and obtain the base material. The zinc powder is spherical or flaky low-lead zinc powder with a fineness of 600 mesh.
[0042] 3. Put the potassiumlithiumsilicate solution into the tank, stir at a medium speed, slowly add the special modified emulsion, and control the stirring speed at 500-600r / min. After mixing, stir at a medium speed for 30 minutes, then add water and stir evenly, filter and pack to obtain a curing agent.
Embodiment 3
[0044] One, carry out batching according to the formula in Table 1;
[0045] 2. Add zinc powder and ferrophosphorus powder into the powder material mixing device, mix thoroughly, sieve and pack, and obtain the base material. The zinc powder is spherical or flaky low-lead zinc powder with a fineness of 600 mesh. Ferrophosphorus powder complies with the RoHS standard of the Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment, with a fineness of 1000 mesh.
[0046] 3. Put the potassiumlithiumsilicate solution into the tank, stir at a medium speed, slowly add the special modified emulsion, and control the stirring speed at 500-600r / min. After mixing, stir at a medium speed for 30 minutes, then add water and stir evenly, filter and pack to obtain a curing agent.
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Abstract
The invention relates to a waterborne workshop primer composition which comprises a base material and a curing agent. The base material is prepared from the following components in percent by weight:30-50% of zincpowder, 20-30% of phosphorusiron powder, 15-20% of quartzpowder and 15-20% of filler. The waterborne workshop primer composition has the beneficial effects that the waterborne workshop primer composition is coated to an assembly line of a large steel structure steel (steel plate and profile steel) pre-treatment workshop, so that the waterborne workshop primer welding performance and the high temperature performance are enhanced greatly, the burning delay area of hot cutting and welding of the steel plate are effectively reduced. Various weldingmodes are compatibilized, so that the welding efficiency is enhanced effectively. Meanwhile, the amount of zincsmoke during hot working is reduced, too, health of a constructor is ensured, welding soot is reduced, and the development requirement of green manufacturing is met.
Description
technical field [0001] The invention relates to the field of steel structure manufacturing coating, in particular to a water-based shop primer composition. Background technique [0002] Shop primer is mainly used as a primer for short-term anti-rust protection on the surface of steel plates, also known as maintenance primer or steel pretreatment primer. In modern industrial production, steel materials such as ships, ocean engineering, bridges, heavy equipment, and mechanical equipment require a certain period of rust prevention before construction and during the sectioning process. Therefore, the shop primer must have 3 to 12 months of anti-rust ability, and also need to have good high temperature resistance to cutting and welding. [0003] The shop primer was born in the early 1950s. The initial shop primer was polyvinyl butyral shop primer (PVB), but due to its poor corrosion resistance, thermal processing performance and weldability. In the 1960s, it was improved to epo...
Claims
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