CN1279136C - Process for preparing high strength adhesive from plant oil residue - Google Patents
Process for preparing high strength adhesive from plant oil residue Download PDFInfo
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- CN1279136C CN1279136C CN 200410060629 CN200410060629A CN1279136C CN 1279136 C CN1279136 C CN 1279136C CN 200410060629 CN200410060629 CN 200410060629 CN 200410060629 A CN200410060629 A CN 200410060629A CN 1279136 C CN1279136 C CN 1279136C
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- binding agent
- vegetable oil
- oil
- agent
- strength adhesive
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Abstract
The present invention relates to a method for preparing a binding agent by using residues of vegetable oil, particularly to a method for preparing a high intensity binding agent by using the residues of vegetable oil, which has the advantages of simple preparation technology, high intensity of the binding agent and good processing property. The present invention comprises the following steps: vegetable oil is filtered before loaded in a reaction chamber and is preheated to 150 to 270 DEG C; an esterification agent is added during stirring time; the mixture is continuously stirred for 2 to 5 hours and is cooled to 180 to 200 DEG C; the mixture is injected into a cooling barrel and continues to be stirred, and then the mixture is cooled to room temperature or 80 to 50 DEG C. In this way, finished products are produced by barreling. The present invention has the advantages that (1) the intensity of the product is high and the combination property is good. Mud cores at the first level can be produced by substituting expensive tung oil or partial resin for the binding agent. Compared with binding agents of mixed fat oil and unmodified vegetable oil, the binding agent has better performance. (2) the binding agent has low cost, the price is equivalent to 1/3 of the tung oil, and the economic benefit is considerably high. (3) the present invention meets the requirement for environmental protection. Residues obtained by refining edible oil are taken as raw materials, and the esterifying agent is also nontoxic. Toxic elements are not found by chemically analyzing the produced binding agent.
Description
Technical field:
The present invention relates to a kind of preparation method of binding agent, especially relate to a kind of method of utilizing vegetable oil dregs to prepare binding agent.
Background technology:
Binder for casting is divided three classes substantially: resene, and oils, inorganic salts, that uses at present is generally inorganic salts and resene.Inorganic salts: mainly be used on the steel casting,, account for total binding agent consumption about 10% as water glass.Resene: at the binding agent of developed country more than 90% all is to use this type of binding agent, China over past ten years consumption increase sharply, but it costs an arm and a leg, and wants support equipment and technological measure during use, consumption accounts for total amount 30%～40% at present.Oil based binder: mainly be the vegetables oil rectified residue of using till today the sixties (being also referred to as plant oil asphalt) of closing fatty oil (now not producing) and growing up the eighties, the performance of these two kinds of binding agents is close, the starting material source is abundant, cheap, be convenient to coremaking, and the intensity of core and resistance to water soak are all fine, many big-and-middle-sized foundry still use in a large number, but this type of binding agent dry strength is not high, be only limited to the following mud core of II level, some factory will make I level mud core at present, still adopts tung oil or resin sand.
The vegetable oil dregs existing market as the about thousands of tons of of the binding agent amount of selling about, but all be not have modification, directly mix a little kerosene and use.So all there are very big defective in intensity and processing performance, more can not be used for the making of senior mud core.After deliberation this type of binder modification and dry strength thereof reach tung oil (about 3～3.5Mpa) intensity, processing performance is better than tung oil, cost has only 1/3 of tung oil price than there not being the low of modification.
The utility model content:
The invention solves existing plant oil asphalt does not have through modification as binding agent, just directly use, cause that intensity is low, processing performance is poor, can not be used for the defective of the making of senior mud core, provide a kind of preparation technology is simple, adhesive strength is high, processing performance is good vegetable oil dregs to prepare the method for high-strength adhesive.
Technical scheme of the present invention is as follows:
1. plant oil asphalt is packed in the reaction chamber, be preheated to 150-270 ℃.
2. guaranteeing that Heating temperature is under 250-300 ℃ the situation, progressively add esterifying agent while stirring, keep and stir 2-5h, material is fully reacted and mix; Be cooled to 180-200 ℃ then.
3. injection cooling tank continues to stir, and is cooled to room temperature or 80 ℃～50 ℃, can the barrelling finished product.
Advantage of the present invention has:
1. the intensity height of product, good combination property.Can replace expensive tung oil (8000 yuan/T) or the part resin (13000 yuan/T) make I level mud core, be close fatty oil and unmodified vegetables oil tackiness agent can not match in excellence or beauty.
2. cost is low.This esterifying agent adopts the comprehensive esterifying agent of the low price that turns waste into wealth.For example, existing esterifying agent has glycerine, season the eleventh of the twelve Earthly Branches alcohol, ethylene glycol, these industrial chemicals are per ton all more than 6000 yuan, and adopt the about 1000 yuan/T of black waste silk (the piece)～1500 yuan/T of chemical fibre factory now.Example: the about 2000 yuan/T of plant oil asphalt on the market.If plant oil asphalt and esterifying agent proportioning are 8: 2, the binding agent of producing per ton can reduce by 200 yuan (than not carrying out the plant oil asphalt binding agent that modification is directly used), and for the factory that uses this binding agent, make I level mud core if be originally with tung oil, now use this binding agent (price only be equivalent to tung oil 1/3) instead, economic benefit is considerable.
3. compliance with environmental protection requirements.Starting material are residues of extracting edible oil, and esterifying agent also is nontoxic, and the binding agent of manufacturing finds no malicious element and exists through chemical analysis.
Embodiment:
(1) source of material plant oily bitumen: it is a rapeseed oil, soya-bean oil, Oleum Gossypii semen through four take off (be depickling, detoxification, the decolouring, come unstuck) after soap stock, through acidifying, hydrolysis obtains mixed fatty acid, and through distilling out various oleic acid erucic acid etc., following clout is plant oil asphalt again.Plant oil asphalt is a paste, different factory discharge waste material---the viscosity of plant oil asphalt does not wait.
(2) plant oil asphalt modified technique method is as follows:
(a) operational path:
1. charging: the collocation of the plant oil asphalt of various different viscosityes is packed in the reaction chamber, and it is preheated to 150-270 ℃.
2. guaranteeing that Heating temperature is 250-300 ℃ and constantly under the whipped state, progressively add esterifying agent, the weight proportion of plant oil asphalt and esterifying agent is 8-9; 2-1.
Winter: plant oil asphalt and esterifying agent proportioning are 9: 1;
Summer: plant oil asphalt and esterifying agent proportioning are 8: 2;
Spring and autumn: plant oil asphalt and esterifying agent proportioning are 85: 15;
3. keep and stir 2-5h, material is fully reacted and mix; Be cooled to 180-200 ℃ then.
4. cooled product is injected cooling tank, continue to stir, make it to be cooled to room temperature or 80 ℃～50 ℃, can barrelling become finished product.
(b) esterifying agent: also claim properties-correcting agent.It can be a polyester waste material, as waste silk, piece, the buckram corner piece material of terylene, polypropylene fibre, acrylic etc., and the beverage bottle of waste foam, band trade mark color etc.These waste materials, particularly with the waste material of look, the chemical fibre factory all with handle at a low price (generally be 1～2,000 yuan/T).For as the plant oil asphalt esterifying agent, be to turn waste into wealth.This also is that the present invention declares one of emphasis of patent.
(c) modification theory: because in the plant oil asphalt a large amount of free fatty acidies is arranged, so its acid number is higher, about 40～60 do not wait, iodine number about 40～50, about saponification value 100, so after adding properties-correcting agent, the chain rupture of properties-correcting agent decomposition at high temperature is ethylene glycol and terephthalic acid, carry out carboxyl and hydroxyl dehydration reaction, its reaction formula is as follows:
Since the composition complexity of plant oil asphalt, impossible unidirectional response, but total reaction trend, become macromole by small molecules, line style becomes the net type, and unconjugated double bond changes conjugated double bond, and then adhesive strength improves greatly after making modification, and over-all propertieies such as surface tension, adhesive power and parching property improve.
Product is mainly used in foundry and makes mud core binding agent usefulness.
The viscosity number of binding agent requires to adjust with kerosene according to each factory.
(3) product use-pattern
1. use: certain factory's diesel engine cylinder cover (I level mud core), the past is made core with tung oil, the current series binding agent, its performance index: dry strength 3.0MPa, viscosity (N-6,25 ℃) 200～250S, binding agent add-on 3～4% changes according to the silica sand situation.220 ℃ of bake out temperatures, soaking time is determined on a case-by-case basis.
2. sand mulling craft:
Sand (100%)+binding agent (3%～3.5%)+potter's clay (1%)
Decide on each factory situation condition mulling time＞10 minute.
This product is the black viscous fluid, barreled, with routine use to close fat technology the same, do not need newly-increased or repacking used equipment and frock.Technological operation all can skillfully be operated from technician to workman with to close fat the same.
Claims (4)
1, a kind of method of utilizing vegetable oil dregs to prepare high-strength adhesive is characterized in that:
1. plant oil asphalt is packed in the reaction chamber, be preheated to 150-270 ℃;
2. guaranteeing that Heating temperature is under 250-300 ℃ the situation, progressively add esterifying agent while stirring, keep and stir 2-5h, be cooled to 180-200 ℃ then;
3. inject cooling tank, continue to stir, be cooled to room temperature or 80 ℃～50 ℃, can the barrelling finished product.
2, vegetable oil dregs according to claim 1 prepares the method for high-strength adhesive, it is characterized in that: the weight proportion of plant oil asphalt and esterifying agent is 8-9: 2-1.
3, vegetable oil dregs according to claim 1 and 2 prepares the method for high-strength adhesive, it is characterized in that: described esterifying agent comprises polyester waste material.
4, vegetable oil dregs according to claim 3 prepares the method for high-strength adhesive, it is characterized in that: described esterifying agent comprises: the waste silk of terylene, polypropylene fibre, acrylic, piece, buckram corner piece material, and the beverage bottle of waste foam, band trade mark color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410060629 CN1279136C (en) | 2004-07-20 | 2004-07-20 | Process for preparing high strength adhesive from plant oil residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410060629 CN1279136C (en) | 2004-07-20 | 2004-07-20 | Process for preparing high strength adhesive from plant oil residue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1587337A CN1587337A (en) | 2005-03-02 |
| CN1279136C true CN1279136C (en) | 2006-10-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410060629 Expired - Fee Related CN1279136C (en) | 2004-07-20 | 2004-07-20 | Process for preparing high strength adhesive from plant oil residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1279136C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585759A (en) * | 2012-02-13 | 2012-07-18 | 霍小虎 | Adhesion agent for rubber plate |
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2004
- 2004-07-20 CN CN 200410060629 patent/CN1279136C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1587337A (en) | 2005-03-02 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20061011 Termination date: 20090820 |