Surface coating of lead ingot cold granulator

A technology of cold granulator and surface coating, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the surface corrosion of lead ingot cold granulator, inability to protect lead ingot cold granulator, The surface of the cold granulator has problems such as poor corrosion resistance, which can improve the corrosion resistance, improve the easy agglomeration, and reduce the degree of polymerization.

CN107936804AInactive Publication Date: 2018-04-20蚌埠市华鼎机械科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a surface coating of a lead ingot cold granulator, and relates to the technical field of a lead acid battery production device. The surface coating comprises a water-based polyurethane emulsion, coupling-agent-modified nanometer silica, benzene sulfonic acid, pentaerythritol, poly(1,4-benzenedimethanol), molybdenum dialkyldithiocarbamate, acidified starch, sodium-alginate-modified attapulgite, and water. According to a large number of experiments, components of the coating are matched at a reasonable ratio, and the whole use performance of the coating is improved. The coating takes a water-based polyurethane emulsion as a main matrix substance, and poly(1,4-benzenedimethanol) and molybdenum dialkyldithiocarbamate are added to modify the water-based polyurethane emulsion at a certain degree. The branched chain structure of the molecule is loosened, so that the film-forming speed and quality of the coating are effectively improved. A coupling agent is used to modify silica, so that the problem that common silica is prone to aggregate and poor in compatibility and dispersibility is solved.
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Description

Technical field

[0001] The invention belongs to the technical field of lead-acid battery production equipment, and specifically relates to a surface paint for a lead ingot cold granulator. Background technique

[0002] Lead ingot cold granulator is the most advanced production equipment on the lead-acid battery production line. It is mainly used in conjunction with the lead powder machine and also used in conjunction with the fully automated production line of the plate. It replaces the traditional granulation which is melted and cast in a lead melting furnace. Lead bars are divided into lead pellets. The surface of the lead ingot cold granulator will be exposed to certain chemical substances in production and application, which will cause corrosion to the surface of the lead ingot cold granulator. At the same time, the lead ingot cold granulator is in the atmosphere. If no protective measures are taken, various corrosions will occur. Therefore, in the prior art, paint is applied...

Examples

Embodiment 1

[0014] A surface coating of lead ingot cold granulator, which is made of the following components in parts by weight: waterborne polyurethane emulsion 80, coupling agent modified nano silica 3, benzene sulfonic acid 4, pentaerythritol 12, polyterephthalic alcohol 0.5. Molybdenum dialkyldithiocarbamate 1.2, acidified starch 20, sodium alginate modified attapulgite 5, water 60.

[0015] Further: the preparation method of the acidified starch is: preparing an organic acid solution with a mass fraction of 5%, treating the starch with a 350W microwave for 2 minutes, and then uniformly mixing the microwave-treated starch with the organic acid solution in a ratio of 200g:450mL Mix together, heat to 90°C, stir at 3000r / min for 40min, then stand to cool to room temperature, filter, wash the starch with deionized water until it is neutral, and then dry to constant weight to get.

[0016] Further: the organic acid is any one of oxalic acid, malonic acid, succinic acid and maleic acid.

[0017]...

Embodiment 2

[0022] A surface coating of lead ingot cold granulator, which is made of the following ingredients in parts by weight: waterborne polyurethane emulsion 90, coupling agent modified nano silica 5, benzene sulfonic acid 6, pentaerythritol 18, polyterephthalic alcohol 0.8, molybdenum dialkyldithiocarbamate 1.8, acidified starch 25, sodium alginate modified attapulgite 10, water 80.

[0023] Further: the preparation method of the acidified starch is: preparing an organic acid solution with a mass fraction of 5%, treating the starch with a 350W microwave for 2 minutes, and then uniformly mixing the microwave-treated starch with the organic acid solution in a ratio of 200g:450mL Mix together, heat to 90°C, stir at 3000r / min for 40min, then stand to cool to room temperature, filter, wash the starch with deionized water until it is neutral, and then dry to constant weight to get.

[0024] Further: the organic acid is any one of oxalic acid, malonic acid, succinic acid and maleic acid.

[002...

Embodiment 3

[0030] A surface coating for lead ingot cold granulator, which is made of the following components in parts by weight: waterborne polyurethane emulsion 85, coupling agent modified nano silica 4, benzene sulfonic acid 5, pentaerythritol 15, polyterephthalic alcohol 0.6, molybdenum dialkyldithiocarbamate 1.5, acidified starch 22, sodium alginate modified attapulgite 8, water 70.

[0031] Further: the preparation method of the acidified starch is: preparing an organic acid solution with a mass fraction of 5%, treating the starch with a 350W microwave for 2 minutes, and then uniformly mixing the microwave-treated starch with the organic acid solution in a ratio of 200g:450mL Mix together, heat to 90°C, stir at 3000r / min for 40min, then stand to cool to room temperature, filter, wash the starch with deionized water until it is neutral, and then dry to constant weight to get.

[0032] Further: the organic acid is any one of oxalic acid, malonic acid, succinic acid and maleic acid.

[0033...