CN1817985A

CN1817985A - Water-based dipping paint without pollution

Info

Publication number: CN1817985A
Application number: CN 200610046059
Authority: CN
Inventors: 张健; 周静一; 黄蓄芳
Original assignee: JIN'AN CASTING MATERIALS FACTORY SHENYANG
Current assignee: JIN'AN CASTING MATERIALS FACTORY SHENYANG
Priority date: 2006-03-16
Filing date: 2006-03-16
Publication date: 2006-08-16
Anticipated expiration: 2026-03-16
Also published as: CN100347257C

Abstract

A clean water-base dip-coating pigment consists of zircon quartz powder 17-30%, brown korund 20-35%, mullite 5-15%, graphite 5-15%, boltonite 5-15%, polyvinyl alcohol 1-4%, deflocculant 1.5-3.5% and water 30-45%. Plyvinyl alcohol is adhesive and deflocculant is prepared by illite powder, sepiolite powder and expanded soil in proportion of 1:0.5:0.5. The procedure is carried out by mixing deflocculant with water while agitating at low temperature, adding into polyvinyl alcohol, dissolving, adding into zircon quartz powder, brown korund, mullite, squamatic graphite and boltonite, agitating, sampling and inspecting to obtain the final product. It is non-toxic and efficient, has no pollution, fast drying and low viscosity.

Description

A kind of water-based dipping paint without pollution

(1) technical field

The present invention relates to a kind of coating, particularly a kind of low viscous water-based dip applicating paint, it is applicable to foundry goods resin sand core quick on the production line, that produce in batches.

(2) background technology

21 century, foundry engieering progressive important symbol was exactly environment protection and foundry goods near-net-shape technology.This just requires the founder author of China to want transition of people's conceptions, adopts a correct attitude towards the present and following casting quality problem.And paintcast is exactly the visual appearance that improves foundry goods, prevent that foundry goods from producing as casting flaws such as scab, pore, sand holes, carburizing, sulfurizings, realize one of effective ways of foundry goods near-net-shape technology, so paintcast has obtained production application widely in the foundry enterprise of China.Simultaneously, exploitation, optimization and popularization can improve the various new coating series and the applying coating method of foundry goods precision and surface quality, also become the hot research problem that domestic and international founder author very pays close attention to.At present, paintcast various in style, but can be different and be divided into two big classes by its used solvent: alcohol-base paint and water-based paint.Wherein but alcohol-base paint has igniting self-combustion fast drying, production efficiency height, characteristics such as applied widely, is that China uses maximum a kind of paintcastes now, accounts for more than 60% of total consumption.But, its disadvantage is, in the ignition drying process, can discharge poisonous in a large number, obnoxious flavour, the severe contamination process air, this is owing to wherein contain a large amount of volatile organic solvent (as various alcohols) and have the cause of materials such as certain toxic various organic binder bonds, auxiliary agent and sanitas.To today of 21 century, people are to the environmental-protecting performance of paintcast product, requirement to operator's health and safety during with coat operations progressively improves, so the VOC that paintcast in use is released in the atmosphere has caused attention highly, requirement is to increasing the VOC of coating, cause volatile organic solvent (as ethanol and methyl alcohol) and the at high temperature labile organic binder bond and the auxiliary agent etc. of very big pollution all to answer strictness to be limited to environment, so present water-based paint abroad more and more is subjected to people's favor.In addition, in the use of alcohol-base paint, a large amount of alcohol are burnt in vain, also can cause the waste of the resource and the energy: and, also improved the production cost of coating, therefore depositing and being a unsafe hidden danger etc. in the casting factory of inflammable, explosive organic solvent, the development trend of alcohol-base paint occurred replacing with water-based paint abroad.

As everyone knows, the general objective of cast paint technical development, except by adopting this key link of water-based paint protection operating environment, also should be around how realizing that foundry goods is refined, requirement such as energy-conservation is carried out.Therefore, in the essentially consist that changes coating, also should improve the coated technique of paintcast, the applying coating method that exploitation is advanced, to improve the surface covered and the coating quality of coating, this also is the effective way that realizes that spray is refined.China most casting producer is still extensive employing and brushes technology, and this is difficult to satisfy the needs that spray is refined.Though, this application pattern is simple to operate, and is flexible, but brushes the quality of coating, the handicraft that depends on the operator to a great extent, the brushing surface usually occurs uneven, became uneven, defective such as brush mark is serious, therefore, adopt this brushing technology, be difficult to obtain dimensional precision height, the premium casting that any surface finish is good.So in recent years, advanced persons' such as flow coat and dip-coating coated technique arises at the historic moment, and in the Foundry Production abroad, particularly the automobile of Da Piliangshengchaning, diesel engine industry have obtained promoting and using widely.The coated technique of flow coat, dip-coating can obviously improve the quality of coating and improve surface covered, but this flow coat, dipping process have proposed very high requirement to the processing performance of its coating, as.Because the maximum characteristics of flow coat, dip-coating paint are, viscosity is little, solid content is low, only adopt the prescription of existing brush coating and be to be difficult to satisfy flow coat, dip-coating paint in many-sided requirements such as suspension, rheological, anti-stick grittiness with its way by simple viscosity adjustment, must utilize advanced science and technology, developing pollution-free, high-level efficiency, water-based dip applicating paint that performance is good, is the urgent need of producing, and also is the certainty of coating development from now on.

(3) summary of the invention

Purpose of the present invention provides a kind of pollution-free, low viscosity, can improve cast product production efficiency and high-quality water-based dip applicating paint.

The technical scheme that adopts is:

A kind of water-based dipping paint without pollution is to be hybridly prepared into by zirconium English powder 17-30%, brown corundum 20-35%, mullite 5-15%, graphite 5-15%, forsterite 5-15%, polyvinyl alcohol 1-4%, suspension agent 1.5-3.5% and water 30-45%.Above-mentioned per-cent is weight percentage.Polyvinyl alcohol is a binding agent.Suspension agent is prepared into by 1: 0.5: 0.5 by Erie's stone flour, sepiolite powder and wilkinite.

A kind of preparation method of water-based dipping paint without pollution is:

The suspension agent of 1.5-3.5% and the water of 30-45% are mixed under stirring at low speed, the polyvinyl alcohol that adds 1-4%, add zirconium English powder 17-30%, brown corundum 20-35%, mullite 5-15%, crystalline flake graphite 5-15%, forsterite 5-15% after the dissolving again, continue to stir, sampling, the technical indicator that detects coating is qualified, is finished product.

Advantage of the present invention is pollution-free, low viscosity, nontoxic, fast dried, can improve casting quality and production efficiency.

(4) embodiment

Embodiment one

A kind of water-based dipping paint without pollution is to be hybridly prepared into by zirconium English powder 21%, brown corundum 24%, mullite 6%, crystalline flake graphite 6%, forsterite 6%, polyvinyl alcohol 2%, suspension agent 2% and water 33% by weight percentage.

Embodiment two

A kind of water-based dipping paint without pollution is to be hybridly prepared into by zirconium English powder 18%, brown corundum 21%, mullite 7%, crystalline flake graphite 7%, forsterite 7%, polyvinyl alcohol 3%, suspension agent 3% and water 34% by weight percentage.

Embodiment three

A kind of water-based dipping paint without pollution is to be hybridly prepared into by zirconium English powder 17%, brown corundum 28%, mullite 5%, crystalline flake graphite 5.5%, forsterite 5%, polyvinyl alcohol 1%, suspension agent 1.5% and water 37% by weight percentage.

Embodiment four

A kind of manufacture method of water-based dipping paint without pollution, be that water with 2% suspension agent and 33% mixes under stirring at low speed, add 2% polyvinyl alcohol again, add zirconium English powder 21%, brown corundum 24%, mullite 6%, crystalline flake graphite 6%, forsterite 6% after the dissolving again, continue to stir, be finished product.

Claims

1, a kind of water-based dipping paint without pollution is characterized in that by zirconium English powder 17-30%, brown corundum 20-35%, mullite 5-15%, graphite 5-15%, forsterite 5-15%, polyvinyl alcohol 1-4%, suspension agent 1.5-3.5% and water 30-45% are hybridly prepared into by weight percentage.

2, a kind of water-based dipping paint without pollution according to claim 1 is characterized in that described suspension agent is to be prepared into by 1: 0.5: 0.5 by Erie's stone flour, sepiolite powder and wilkinite.

3, a kind of water-based dipping paint without pollution according to claim 1 is characterized in that being hybridly prepared into by zirconium English powder 21%, brown corundum 24%, mullite 6%, crystalline flake graphite 6%, forsterite 6%, polyvinyl alcohol 2%, suspension agent 2% and water 33% by weight percentage.

4, a kind of water-based dipping paint without pollution according to claim 1 is characterized in that being hybridly prepared into by zirconium English powder 18%, brown corundum 21%, mullite 7%, crystalline flake graphite 7%, forsterite 7%, polyvinyl alcohol 3%, suspension agent 3% and water 34% by weight percentage.

5, a kind of water-based dipping paint without pollution according to claim 1 is characterized in that being hybridly prepared into by zirconium English powder 17%, brown corundum 28%, mullite 5%, crystalline flake graphite 5.5%, forsterite 5%, polyvinyl alcohol 1%, suspension agent 1.5% and water 37% by weight percentage.