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A kind of binder for casting and preparation method thereof

A technology for binders and castings, applied in the field of binders for castings and their preparation, can solve the problems of short service life of organic binders, inability to withstand high temperatures, and easily generate volatile gases, and achieve high temperature resistance performance, The effect of good bond strength and good temperature resistance

Active Publication Date: 2018-06-12
陆河南方机械铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved is: in order to solve the shortcomings of organic binders such as short service life, low temperature resistance and easy generation of volatile gas, to provide a high temperature decomposition resistant casting binder and its preparation method

Method used

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  • A kind of binder for casting and preparation method thereof

Examples

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Effect test

Embodiment 1

[0018] A binder for castings, which consists of the following components in parts by weight: 40 parts of furfuryl alcohol resin, 25 parts of bisphenol A epoxy resin, 13 parts of hydroxyethyl methylcellulose, ethylene glycol di 9 parts of acetate, 6 parts of diethyl aminomalonate, 16 parts of diluent, 2 parts of palm oil, 3 parts of magnesium oxide, 5 parts of antimony trioxide, 5 parts of sodium peroxide, 10 parts of absolute ethanol and 8 parts of ionized water.

[0019] The diluent is 1,6-hexanediol diglycidyl ether.

[0020] The above-mentioned preparation method of a casting binder, the preparation steps are as follows:

[0021] Step 1: Put furfuryl alcohol resin, bisphenol A type epoxy resin and diluent in the reaction kettle and stir and mix. The temperature of the reaction kettle is set at 40°C;

[0022] Step 2: then add ethylene glycol diacetate and diethyl aminomalonate successively and continue stirring;

[0023] Step 3: Then add palm oil and keep stirring to mix ...

Embodiment 2

[0026] A binder for castings, which consists of the following components in parts by weight: 60 parts of furfuryl alcohol resin, 42 parts of bisphenol A epoxy resin, 20 parts of hydroxyethyl methylcellulose, ethylene glycol di 7 parts of acetate, 14 parts of diethyl aminomalonate, 24 parts of thinner, 4 parts of palm oil, 9 parts of magnesium oxide, 12 parts of antimony trioxide, 11 parts of sodium peroxide, 18 parts of absolute ethanol and 14 parts of ionized water.

[0027] The diluent is phenyl glycidyl ether.

[0028] The above-mentioned preparation method of a casting binder, the preparation steps are as follows:

[0029] Step 1: Put furfuryl alcohol resin, bisphenol A type epoxy resin and diluent in the reactor and stir and mix, and the temperature of the reactor is set at 55°C;

[0030] Step 2: then add ethylene glycol diacetate and diethyl aminomalonate successively and continue stirring;

[0031] Step 3: Then add palm oil and keep stirring to mix evenly;

[0032] ...

Embodiment 3

[0034] A binder for castings, which consists of the following components in parts by weight: 50 parts of furfuryl alcohol resin, 34 parts of bisphenol A epoxy resin, 16 parts of hydroxyethyl methylcellulose, ethylene glycol di 13 parts of acetate, 10 parts of diethyl aminomalonate, 20 parts of diluent, 3 parts of palm oil, 6 parts of magnesium oxide, 8 parts of antimony trioxide, 8 parts of sodium peroxide, 14 parts of absolute ethanol and 11 parts of ionized water.

[0035] The diluent is phenyl glycidyl ether.

[0036] The above-mentioned preparation method of a casting binder, the preparation steps are as follows:

[0037] Step 1: Put furfuryl alcohol resin, bisphenol A type epoxy resin and diluent in the reaction kettle and stir and mix. The temperature of the reaction kettle is set at 42°C;

[0038] Step 2: then add ethylene glycol diacetate and diethyl aminomalonate successively and continue stirring;

[0039] Step 3: Then add palm oil and keep stirring to mix evenly;...

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Abstract

The invention discloses a binder for a casting. The binder comprises furfuryl alcohol resin, bisphenol A epoxy resin, hydroxyethylmethylcellulose, ethylene glycol diacetate, aminomalonic acid diethyl ester, a diluent, palm oil, magnesium oxide, antimonony oxide, sodium peroxide, anhydrous ethanol and deionized water according to a weight part ratio. The invention also discloses a preparation method of the binder. The binder has high high-temperature resistance, is suitable for materials with high requirements on a modeling sand temperature and further widens an application scope.

Description

technical field [0001] The invention belongs to the field of casting processing, and in particular relates to a binder for castings and a preparation method thereof. Background technique [0002] A binder is a substance that firmly bonds various solid materials together by interfacial action (chemical force or physical force). Adhesives are widely used in construction, machining, electronic products and other fields. Foundry binder is to form granular or powder molding materials into a continuous adhesive film with a certain strength to form a mold. With the advancement of technology, foundry binders have developed from the original natural binder-clay to today's synthetic binders such as organic, inorganic and composite binders. Among them, the organic binder has the advantages of convenient use, good adhesion, and low cost, and is the most widely used. However, the organic binder also has a short service life and is not resistant to high temperatures, especially at high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/14C08L63/00C08L1/28C08L91/00C08K13/02C08K5/103C08K5/17C08K3/22B22C1/16B22C1/22
Inventor 范伟振王治平彭志强杨文雄钟迪珠范伟浅吴高维
Owner 陆河南方机械铸造有限公司
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