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A foam-plastic sheet binder for pump body lost foam manufacturing

A technology of lost foam and adhesive, which is applied in the field of pump casting, can solve the problems affecting the quality of the pump body and endangering the health of workers, and achieve the effect of ensuring the quality and viscosity of the pump body

Active Publication Date: 2018-01-23
ESKE PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the purpose of bonding can be achieved if ordinary binders are used, harmful gases will be produced during gasification, or their residues will react with molten metal, endangering the health of workers and affecting the quality of the pump body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Mix 15 parts of polyethylene glycol and 30 parts of isopropanol evenly, then add 70 parts of acrylic resin, 20 parts of phenolic resin and 4 parts of nano rubber powder, mix well and then microwave at a microwave frequency of 2450MHz and a power of 600W for 15min , to obtain material I;

[0016] (2) Add 15 parts of polyvinyl alcohol, 8 parts of carrageenan and 8 parts of ethylene-propylene rubber to the material I while it is hot, mix evenly, seal it and let it stand for 30 minutes to obtain the material II;

[0017] (3) Add 10 parts of paraffin oil and 5 parts of chitosan to the material II, stir to form a uniform slurry and place it at 0-5°C for 12 hours, then add 6 parts of nano talcum powder and 2 parts of borax, and mix well.

[0018] Pretreatment of carrageenan: add 60 parts of carrageenan and 6 parts of nano-silica micropowder to the water, mix well, and then microwave for 10 minutes at a microwave frequency of 2450MHz and a power of 600W, then add 8 parts of...

Embodiment 2

[0020] (1) Mix 20 parts of polyethylene glycol and 25 parts of isopropanol evenly, then add 80 parts of acrylic resin, 25 parts of phenolic resin and 6 parts of nano rubber powder, mix well and then microwave at a microwave frequency of 2450MHz and a power of 600W for 15min , to obtain material I;

[0021] (2) Add 12 parts of polyvinyl alcohol, 10 parts of carrageenan and 6 parts of ethylene-propylene rubber to material I while it is hot, mix well, seal and let stand for 30 minutes to obtain material II;

[0022] (3) Add 15 parts of paraffin oil and 8 parts of chitosan to the material II, stir to form a uniform slurry and place it at 0-5°C for 12 hours, then add 8 parts of nano talcum powder and 1 part of borax, and mix well.

[0023] Pretreatment of carrageenan: Add 80 parts of carrageenan and 8 parts of nano-silica micropowder to the water, mix well, and then microwave at 2450MHz and 600W for 10 minutes, then add 10 parts of cyclodextrin and 4 parts of rice bran wax, and con...

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PUM

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Abstract

The invention discloses a foam plastic board adhesive for pump body lost foam casting, relating to the technical field of pump casting. The foam plastic board adhesive for pump body lost foam casting is prepared from the following raw materials in parts by weight: 70-80 parts of acrylic resin, 20-30 parts of phenolic resin, 12-16 parts of polyvinyl alcohol, 10-15 parts of paraffin oil, 8-12 parts of carrageenin, 6-10 parts of ethylene-propylene rubber, 6-10 parts of nano talcum powder, 4-8 parts of chitosan, 3-6 parts of nano rubber powder, 1-2 parts of sodium borate, 15-20 parts of polyethyleneglycol and 25-30 parts of isopropanol. The adhesive has proper viscosity, and can not generate harmful gas during gasification, and the residues after gasification can not react with molten metal, thereby ensuring the pump body quality.

Description

Technical field: [0001] The invention relates to the technical field of pump casting, in particular to a foam plastic plate adhesive for manufacturing lost foam of a pump body. Background technique: [0002] Lost foam casting is a full-type casting of foam plastic molds using binder-free dry sand combined with vacuum pumping technology. Foam models similar in size and shape to castings are bonded and combined into model clusters. After brushing with refractory paint and drying, they are buried in Vibration molding in dry quartz sand, pouring under negative pressure to vaporize the model, liquid metal occupies the position of the model, solidifies and cools to form a new casting method. There are two ways to make lost foam, one is made of foam beads, and the other is made of foam sheets. In the latter method, when making complex lost foam, first use the resistance wire cutting device to cut the foam plastic sheet into the required model, and then bond it with an adhesive to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/00C09J161/06C09J11/04C09J11/06C09J11/08B22C7/02B22C9/04
CPCB22C7/026B22C9/046C08K2201/011C08L2205/035C09J11/04C09J11/06C09J11/08C09J133/00C08L61/06C08K3/34C08K2003/387C08K5/05
Inventor 曹珠明
Owner ESKE PUMP