CN101792649A - Production method of unsaturated polyester emulsion binder for chopped strand mats - Google Patents
Production method of unsaturated polyester emulsion binder for chopped strand mats Download PDFInfo
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- CN101792649A CN101792649A CN200910155752A CN200910155752A CN101792649A CN 101792649 A CN101792649 A CN 101792649A CN 200910155752 A CN200910155752 A CN 200910155752A CN 200910155752 A CN200910155752 A CN 200910155752A CN 101792649 A CN101792649 A CN 101792649A
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- unsaturated polyester
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- strand mats
- polyester emulsion
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Abstract
The invention discloses a production method of an unsaturated polyester emulsion binder for chopped strand mats, which is characterized by comprising the following steps of: putting 55-70 percent of unsaturated polyester resin, 10-15 percent of acetone and 20-30 percent of reactive emulsifier in percent by weight in a high-speed dispersion machine for evenly stirring and mixing; then adding deionized water until the system generates phase inversion; keeping stirring for a while and then adding the deionized water for dilution to obtain an unsaturated polyester emulsion with a certain concentration, wherein the reactive emulsifier is a polymerizable emulsifier which contains double bonds and can participate in reaction. The production method of the unsaturated polyester emulsion binder is simple and easy to operate; the produced unsaturated polyester binder has smaller grain size, good stability, strong binding power and high penetration velocity in cinnamene, thereby being very suitable for preparing glass fibre chopped strand mats.
Description
(1) technical field
The present invention relates to a kind of production method of unsaturated polyester emulsion, especially a kind of production method of unsaturated polyester emulsion binder for chopped strand mats.
(2) background technology
Glass fiber product is a kind of electrodeless non-metallic material of excellent performance, is the important a member in the modern material family, also is the indispensable supporting base mateiral of new and high technology.It not only has premium properties such as does not fire, high temperature resistant, electrical isolation, tensile strength height, chemical stability are good, can also adopt organic lining treatment technology to carry out the goods deep processing and enlarges the Application Areas of goods.Become one of current the most popular industry main body with glass reinforced plastics.Thereby the glass product is by more and more widely the conventional industries departments such as traffic, transportation, building, environmental protection, oil, chemical industry, electrical equipment, electronics, machinery, Aeronautics and Astronautics, nuclear energy that are applied to and national defence, new and high technology department.
Glass chopped strand mats is a kind of important strongthener of glass fiber reinforced plastics composite material, and it is with the chopped strand fixed length cutting, and non-directional is paved into the uniform precursor felt of thickness face at random, binding agent in the sprinkling, and drying, cooling form.The emulsion felt then is to cut felt with the weak point that the sticking system of emulsion binder forms.The emulsion felt does not fall yarn, and the utmost point is applicable to mechanical-moulded technology, as mold pressing, winding etc., have good mould attaching property, be easy to deaeration, tension force is big and non-directional, help the processing of later process, be widely used in aspects such as national defence, traffic, transportation, chemical industry, building materials.
The emulsion binder that strengthens short-cut original silk silk felt does not still have sophisticated product at home and can satisfy external requirement of client.At home, the emulsion felt more is used to the producer of some small-sized hands paste technologies because it tears advantage such as convenience, low price.This wetting-out rate to the emulsion felt has certain requirement, but the final state to soaking into, the mobile grade of resin on the felt facade all do not have too many requirement.And external client is quite strict to the requirement of emulsion felt, and mainly contain: the dissolution rate in vinylbenzene is less than 30s; Felt soaks into the white silk that final state can only have minute quantity in resin, even does not have: resin can not have too many sagging on the felt facade; Yarn can not be fallen in the felt surface; Felt can not be opened layer in resin; Softness or the like is wanted on the felt surface.
It mainly is polymer emulsion with emulsion binder that weak point is cut felt, work is to realize point and the bonding of putting between the glass yarn, cut the felt good processing properties to give weak point, require the finished product felt simultaneously in the process of preparation matrix material, good consistency, impregnability are arranged with resin.In the market, the binding agent that adopts as the short-cut original silk silk felt of strongthener generally has two types: a kind of is the polyester powder of solubility, and a kind of is emulsions such as polyester emulsion or polyvinyl acetate (PVA).
Polyester emulsion is divided into saturated and undersaturated again.Have hydrophilic radical and hydrophobic groupings such as aliphatic hydrocarbon and aromatic hydrocarbon such as ester bond, unsaturated double-bond, end carboxyl in the unsaturated polyester ester molecular structure, its lipophilicity of general unsaturated polyester is greater than wetting ability, moisturely surpasses 2%, demixing phenomenon will occur.
Obtain stable unsaturated polyester emulsion binder, at present the approach that adopts has three kinds of mechanical process, chemic modified method and phase reversion methods.Mechanical process gained emulsion particle proterties is irregular, broad particle distribution, and poor stability.Chemic modified method prepares wayward, and the cost of product is also higher.Utilizing the phase reversion method that macromolecule resin emulsification is emulsion, is by changing the volume of water, making polymkeric substance be converted into the oil-in-water state by the water-in-oil state.The process that external phase in the former finger multicomponent system of phase reversion transforms under certain condition mutually, as in oil/water/emulsifier system, when external phase by water when oil phase changes, in the external phase limited proportionality, the interfacial tension of system is minimum, thereby the size minimum of disperse phase.The phase reversion method almost can make all macromolecule resins by means of the effect that adds emulsifying agent by the physics emulsification method.Prepared unsaturated polyester emulsion in the past and adopt first chemosynthesis unsaturated polyester resin more, and be prepared into emulsion by the phase reversion method again, reaction time is long, the process control complexity.The invention reside in the production method that a kind of unsaturated polyester emulsion simple to operation is provided,, enhance productivity to shorten the operating time.
(3) summary of the invention
The technical problem to be solved in the present invention is to provide a kind of production method of unsaturated polyester emulsion simple to operation, less, the good stability of unsaturated polyester emulsion particle diameter that this method makes, satisfy the requirement of subsequent machining technology simultaneously, cohesive force is strong, wetting-out rate in vinylbenzene is fast, is suitable for as the short felt emulsion binder of cutting.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of production method of unsaturated polyester emulsion binder for chopped strand mats, described production method is: with unsaturated polyester resin, acetone and reactive emulsifier by 55～70%: 10～15%: 20～30% mass ratio drops into high speed dispersor and mixes, add deionized water then and phase reversion (this moment, the viscosity of system can descend suddenly) has taken place up to system, add the deionized water dilution after continuing to stir for some time, obtain certain density unsaturated polyester emulsion.The present invention can adjust the add-on of deionized water after the phase reversion as required needing to obtain the unsaturated polyester emulsion of concentration.
Because the requirement of unsaturated polyester emulsion binder for chopped strand mats on subsequent applications, contain following a kind of or any several structural unit in the molecular structure of the preferred unsaturated polyester resin of the present invention: m-phthalic acid, terephthalic acid, dihydroxyphenyl propane, tetrahydrophthalic anhydride, softening temperature need be controlled at 30-70 ℃, and the relative molecular mass scope is 2000-7000.
Reactive emulsifier of the present invention also has and can participate in the polymeric reactive group except hydrophilic group with conventional emulsifier, oleophilic group, for containing the polymerizability emulsifying agent that two bond energys participate in reaction.It is one of following that the present invention recommends described reactive emulsifier to be selected from: alkyl alkene-2-propyl group b sodium salt, 2-acrylamide-2,2-dimethyl ethyl sulfonic acid sodium, allyl group sulfo group alkoxyl group succsinic acid dibasic acid esters sodium salt, polyoxyethylene phenolic ether in ninth of the ten Heavenly Stems acrylate, octadecyl dimethyl vinyl phenyl ammonium chloride etc.; Preferred described reactive emulsifier is an allyl group sulfo group alkoxyl group succsinic acid dibasic acid esters sodium salt.
It is 1000-2000 rev/min that the present invention recommends the stirring velocity of described high speed dispersor.
Adopt the performance of gained unsaturated polyester emulsion of the present invention as follows:
(1) centrifugal stability: 6000 rev/mins, 90 minutes not stratified;
(2) stability in storage: not breakdown of emulsion layering of emulsion in 24 months;
(3) median size:＜0.2 μ m;
(4) thin up is 10 ± 1% to emulsion solid content, leaves standstill 48 hours stability of emulsion＞99%;
So less, the good stability of unsaturated polyester emulsion particle diameter that the present invention makes, cohesive force is strong, and the wetting-out rate in vinylbenzene is fast, is suitable as the short felt emulsion binder of cutting, the preparation glass chopped strand mats.
Compared with prior art, unsaturated polyester emulsion binder for chopped strand mats generation method of the present invention is simple to operation, less, the good stability of prepared unsaturated polyester binding agent particle diameter, and cohesive force is strong, wetting-out rate in vinylbenzene is fast, is highly suitable for preparing glass chopped strand mats.
(4) embodiment
With specific embodiment technical scheme of the present invention is described further below, but protection scope of the present invention is not limited thereto:
The umber of mentioning in the embodiment of the invention is mass parts.
Embodiment 1
Be equipped with the unsaturated polyester resin emulsion binder according to the phase reversion legal system, with 5.5 parts of unsaturated polyester resin DS-186 (Shanghai Xin Tianhe Resin Co., Ltd.'s product), 1.5 parts in acetone, reactive emulsifier ONIST M-20S3 part, the input high speed dispersor stirs, stirring velocity is 1000 rev/mins, mixing back adding deionized water descends suddenly up to the viscosity of system, this moment, the external phase of system changed water into mutually by unsaturated polyester resin solution, amount of water when phase reversion has taken place is 20% of a system, the continuation high-speed stirring adds appropriate amount of deionized water and is diluted to certain concentration after for some time, make weak point and cut felt unsaturated polyester resin emulsion binder, physical parameter is as follows:
Viscosity: about 400mPa.S
Particle diameter: about 0.15 μ m
Solid content: 40%
Molecular weight: about 4000
The short penetration period of felt in vinylbenzene of cutting: about 7S
The stability of unsaturated polyester resin emulsion binder: centrifugal stability: 6000 rev/mins, 90 minutes not stratified.
Embodiment 2
Be equipped with the unsaturated polyester resin emulsion binder according to the phase reversion legal system, with 6.5 parts of unsaturated polyester resin DS-196 (Shanghai Xin Tianhe Resin Co., Ltd.'s product), 1 part in acetone, reactive emulsifier ONIST M-20S2.5 part, the input high speed dispersor stirs, stirring velocity is 1500 rev/mins, mixing back adding deionized water descends suddenly up to the viscosity of system, this moment, the external phase of system changed water into mutually by unsaturated polyester resin solution, amount of water when phase reversion has taken place is 25% of a system, the continuation high-speed stirring adds appropriate amount of deionized water and is diluted to certain concentration after for some time, make weak point and cut felt unsaturated polyester resin emulsion binder, physical parameter is as follows:
Viscosity: about 550mPa.S
Particle diameter: about 0.18 μ m
Solid content: 45%
Molecular weight: about 5000
The short penetration period of felt in vinylbenzene of cutting: about 9S
Short stability of cutting felt with the unsaturated polyester resin emulsion binder: centrifugal stability: 6000 rev/mins, 90 minutes not stratified.
Embodiment 3
Be equipped with the unsaturated polyester resin emulsion binder according to the phase reversion legal system, with 7 parts of unsaturated polyester resin DS-161 (Shanghai Xin Tianhe Resin Co., Ltd.'s product), 1 part in acetone, 2 parts of reactive emulsifier ONIST M-20S, the input high speed dispersor stirs, stirring velocity is 2000 rev/mins, mixing back adding deionized water descends suddenly up to the viscosity of system, this moment, the external phase of system changed water into mutually by unsaturated polyester resin solution, amount of water when phase reversion has taken place is 30% of a system, the continuation high-speed stirring adds appropriate amount of deionized water and is diluted to certain concentration after for some time, make weak point and cut felt unsaturated polyester resin emulsion binder, physical parameter is as follows:
Viscosity: about 500mPa.S
Particle diameter: about 0.18 μ m
Molecular weight: about 3000
Solid content: 40%
The short penetration period of felt in vinylbenzene of cutting: about 8S
Short stability of cutting felt with the unsaturated polyester resin emulsion binder: centrifugal stability: 6000 rev/mins, 90 minutes not stratified.
Claims (4)
1. the production method of a unsaturated polyester emulsion binder for chopped strand mats, it is characterized in that described production method is: with unsaturated polyester resin, acetone and reactive emulsifier by 55～70%: 10～15%: 20～30% mass ratio drops into high speed dispersor and mixes, add deionized water then and phase reversion has taken place up to system, add the deionized water dilution after continuing to stir for some time, obtain certain density unsaturated polyester emulsion; Described reactive emulsifier is to contain the polymerizability emulsifying agent that two bond energys participate in reaction.
2. the production method of unsaturated polyester emulsion binder for chopped strand mats as claimed in claim 1 is characterized in that containing in the molecular structure of described unsaturated polyester resin following a kind of or any several structural unit: m-phthalic acid, terephthalic acid, dihydroxyphenyl propane, tetrahydrophthalic anhydride; The softening temperature of described unsaturated polyester resin is controlled at 30-70 ℃, and the relative molecular mass scope is 2000-7000.
3. the production method of unsaturated polyester emulsion binder for chopped strand mats as claimed in claim 1 or 2, it is one of following to it is characterized in that described reactive emulsifier is selected from: alkyl alkene-2-propyl group b sodium salt, 2-acrylamide-2,2-dimethyl ethyl sulfonic acid sodium, allyl group sulfo group alkoxyl group succsinic acid dibasic acid esters sodium salt, polyoxyethylene phenolic ether in ninth of the ten Heavenly Stems acrylate, octadecyl dimethyl vinyl phenyl ammonium chloride.
4. the production method of unsaturated polyester emulsion binder for chopped strand mats as claimed in claim 1, the stirring velocity that it is characterized in that described high speed dispersor is 1000-2000 rev/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101557524A CN101792649B (en) | 2009-12-25 | 2009-12-25 | Production method of unsaturated polyester emulsion binder for chopped strand mats |
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| CN2009101557524A CN101792649B (en) | 2009-12-25 | 2009-12-25 | Production method of unsaturated polyester emulsion binder for chopped strand mats |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160235A (en) * | 2012-04-17 | 2013-06-19 | 南京彤天广元高分子材料有限公司 | Resin powder bonding agent |
| CN109777199A (en) * | 2019-02-25 | 2019-05-21 | 陈丽娟 | A kind of acid proof printing water ink and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN85108789B (en) * | 1985-11-18 | 1988-07-27 | 国家建筑材料工业局上海玻璃钢研究所 | Reinforcement-type glass fiber infiltrant |
| CN1302172C (en) * | 2005-04-08 | 2007-02-28 | 长春理工大学 | Carbon fiber backing compound and its preparation |
| CN101100355B (en) * | 2007-06-12 | 2011-07-06 | 巨石集团有限公司 | Soaking agent capable of increasing glass fiber acid resistance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160235A (en) * | 2012-04-17 | 2013-06-19 | 南京彤天广元高分子材料有限公司 | Resin powder bonding agent |
| CN103160235B (en) * | 2012-04-17 | 2014-10-29 | 南京彤天广元高分子材料有限公司 | Resin powder bonding agent |
| CN109777199A (en) * | 2019-02-25 | 2019-05-21 | 陈丽娟 | A kind of acid proof printing water ink and preparation method thereof |
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| CN101792649B (en) | 2012-06-20 |
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