CN101306579A - Process for treating leftover material of dipping glass fibre screen cloth - Google Patents
Process for treating leftover material of dipping glass fibre screen cloth Download PDFInfo
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- CN101306579A CN101306579A CNA2008100169565A CN200810016956A CN101306579A CN 101306579 A CN101306579 A CN 101306579A CN A2008100169565 A CNA2008100169565 A CN A2008100169565A CN 200810016956 A CN200810016956 A CN 200810016956A CN 101306579 A CN101306579 A CN 101306579A
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- screen cloth
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- leftover material
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- dipping glass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to a treatment technique for leftover material of dipping fiberglass mesh fabrics, which is used for processing the leftover material of the dipping fiberglass mesh fabrics to form a secondary product. The treatment technique is executed according to the steps as follows: (1) in a softening treatment step, the leftover material of the dipping fiberglass mesh fabrics is chopped and then is soaked in organic solvent for softening treatment; (2) in a mixing treatment step, the softened leftover material of the dipping fiberglass mesh fabrics is added with methenamine powder lots, the weight of which ranges from 10 to 20 percent; the mixture is mixed evenly; wherein, methenamine powder lots comprise the components by weight percentage as follows: 15-65% of methenamine, 20-30% of filling compound, 10-30% of internal parting agents and 5-15% of colorant; (3) in a hot press molding step, a forming die is heated, the materiel which is mixed evenly is put in the forming die, and the secondary product is obtained after extrusion forming. The technique is simple and reasonable, the execution is convenient, the leftover material of the dipping fiberglass mesh fabrics can be fully used, and the secondary product is obtained with low cost and good benefits.
Description
Technical field
The present invention relates to a kind of treatment process of leftover material of dipping glass fibre screen cloth, be used for leftover material of dipping glass fibre screen cloth is made afterproduct.
Background technology
Glass fabric is at heat of immersion solidity or novolac resin, epoxy resin, amino resins etc., and through after the suitable drying, formed leftover pieces after cutting or the punching press.To the leftover pieces of handling through this resinoid, present processing method generally has three kinds, a kind of is to adopt buried processing, but because the thermosetting resin on the leftover pieces is uncured resin, the leftover pieces resin content that has is up to 20-40%, contain higher free phenol, free aldehyde and other organic monomers, thereby can produce lasting pollution the groundwater quality in buried place.Another kind method is to adopt burning to handle, but thermosetting resin is difficult combustion resin, can produce a large amount of black smokes, major polluting atmosphere environment during burning.More than two kinds of processing methods, all can impact, and cause the serious waste of resource environment.The third method is to wash glue to recycle, and with alkaline aqueous solution or other solvents, soaks leftover material of dipping glass fibre screen cloth, makes the contained resin dilution dissolving of material, reaches the purpose of recycling.Because of this processing method cost is too high, economic benefit is not obvious, and produces the liquid waste of a large amount of high concentration CODs in process of production, and its discharging also can produce environment and have a strong impact on, so also be difficult to actual the employing in the industrial practice of standard.
In addition, Chinese patent application number is the method for utilizing of 200510050709.3 glass fiber leftover material, with kneader as shearing and dispersing apparatus, with the adhesive of liquid thermoset resin as preparation moulding compound and moulding article, draw the crowded of kneader, tearing, under shearing and the kneading action, the glass fabric leftover pieces are dispersed into to containing the glue fiber bundle, make some resources obtain utilizing, obtained certain effect, but complex manufacturing, material technical requirement height also needs to add thermosetting resin as adhesive, also needs heating aborning, vacuumize etc., many technologies still have bigger gap from practical application, and the material processing cost is higher in addition, so be difficult to extensively popularize.
Summary of the invention
The object of the present invention is to provide a kind of treatment process of leftover material of dipping glass fibre screen cloth, the technology advantages of simple, convenient enforcement can make full use of leftover material of dipping glass fibre screen cloth, and obtains afterproduct, and cost is low, and is profitable.
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention is characterized in that carrying out according to the following step:
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut back the immersion with organic solvent soften processing;
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 10-20% mixes;
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 15-65%, filler 20-30%, inner pattern releasing agent applicable 10-30% and colouring agent 5-15%;
(3) hot-forming: with the mould heating, the material behind the mixing is placed mould, extrusion forming gets afterproduct.Afterproduct comprises all kinds of shaft couplings, the bearing limit lid of water pump, oil pump, vavuum pump, oil seal cover, and motorized pulleys limit lid, cylinder carrying roller, all kinds of insulating materials coil racks, motor, electric welding machine terminal plate, and all kinds of anticorrosion parts etc.
Preferably the material behind the mixing is made prefabricated idiosome and handle before hot-forming, with size and the shape system embryo of the material behind the mixing according to pressing, it is standby to make prefabricated idiosome; When hot-forming, wait mould heating after, prefabricated idiosome is placed mould, extrusion forming gets afterproduct.
Among the present invention, short cutting is meant the short material that leftover material of dipping glass fibre screen cloth is cut into 10-30 centimetre.Because this leftover pieces intensity is higher, cut very difficulty with common cutter weak point, in addition owing to the glass fibre that will protect as reinforcing material, so also be not suitable for pulverizing with pulverizer.Can adopt the hydraulic cutter tool to cut, fix cutter and carry out the hydraulic pressure weak point and cut on moved cross beam, the pressure of hydraulic machinery is 10-30MPa.In this way, cutter is movable slow, helps operating personnel's safety operation, and simultaneously, by reason of heavy pressure, the once short material of cutting is many, fast, economical.
In softening the processing, a kind of in the preferred industrial alcohol of organic solvent, methyl alcohol or the acetone, addition is that the 10-45% of leftover material of dipping glass fibre screen cloth weight is suitable.
Sealing was placed 6-24 hour after adding organic solvent.Rely on the volatilization transpiration of solvent, with dilutions such as the phenolic resins on the material, softening.
In the methenamine powder batching, filler is a kind of in precipitated calcium carbonate, talcum powder or the hollow glass micropearl, inner pattern releasing agent applicable is a kind of in zinc stearate, calcium stearate or the graphite, and colouring agent is used for painted, can use iron oxide red or iron black and various organic or inorganic pigment etc.Also can add a certain amount of KH550, PVB film etc. as required, be bonding and preformed in the effect in base stage, is to promote cancellated formation in the effect of cure stage, improves toughness and other mechanical performances of goods.)
The batch mixing ball milling time of methenamine powder is controlled to be 1.5-4 hour and suits.
The mixture temperature of leftover material of dipping glass fibre screen cloth and methenamine powder is controlled to be 20-50 ℃, and mixing time is controlled to be 10-40 minute.Leftover material of dipping glass fibre screen cloth is with after the methenamine powder mixes, for it is further mixed, guarantee follow-up link and consistency of product, compound can carry out banburying and mixing through extruser again, after extruding by extrusion again, build standby with plastic sheeting.
Prefabricated idiosome oven dry back is standby, bake out temperature 50-60 ℃, drying time 4-6 hour.Prefabricated idiosome is placed on the shelf, be convenient to the circulation of air drying.The purpose of oven dry has two, and the one, promote that (curing of phenolic resins is from A rank phenolic resins to A rank phenolic resins, after the preliminary sclerosis in B rank, to the process of C rank conversion to the conversion of B rank phenolic resins.The process of oven dry is actual to be after satisfying the uniform temperature condition, and some is converted into a phenolic resin cured process phenolic resins), shorten clamp time, improve mold pressing efficient; The 2nd, remove the solvent in the resin, reduce the resin activity, be convenient to long-term storage, further prolong the material shelf-life, the reason shelf-life is too short and cause raw-material waste.
In hot-forming, mold temperature is 140-170 ℃, briquetting pressure 10-35MPA, dwell time 0.5-1.5 minute/millimeter thickness (thickness of afterproduct).
For preventing that bubble from appearring in pressing, can insert in the mould and after the pressurization, lift patrix again at prefabricated idiosome, close then, 3-10 time repeatedly, the waste gas that produces when making resin solidification discharge.After exhaust finished, press entered packing state, and pressurize finishes back curing and finishes.Can carry out automation control by PC by programming.
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention, the technology advantages of simple, convenient enforcement can make full use of leftover material of dipping glass fibre screen cloth, and obtains afterproduct, and cost is low, and is profitable, is beneficial to implement to promote.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention, carry out according to the following step:
At first leftover material of dipping glass fibre screen cloth is cut into 15 centimetres short material, then,
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut back the immersion with organic solvent soften processing, organic solvent is an industrial alcohol, addition is 12% of a leftover material of dipping glass fibre screen cloth weight, and sealing was placed 20 hours behind the adding organic solvent.
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 15% mixes in mixer, mixture temperature is controlled to be 30 ℃, mixing time is controlled to be 20 minutes, again after extruser carries out banburying and mixes, extrude by extrusion, build standby with plastic sheeting.
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 30%, filler 30%, inner pattern releasing agent applicable 30% and colouring agent 10%; The batch mixing ball milling time is controlled to be 2 hours.
Filler is a precipitated calcium carbonate, and inner pattern releasing agent applicable is a zinc stearate, and colouring agent is a ferric oxide red colorant.
(3) do prefabricated idiosome: with size and the shape system embryo of the material behind the mixing,, make prefabricated idiosome as water pump bearing limit lid according to pressing, prefabricated idiosome oven dry back is standby, 55 ℃ of bake out temperatures, drying time 5 hours.
(4) hot-forming: that mould is heated, mold temperature is controlled to be 150 ℃, prefabricated idiosome is placed mould, and pressing process needs pump-down process, lifts patrix, close then, 3 times repeatedly, the waste gas that produces when making resin solidification is discharged, and briquetting pressure is controlled to be 15MPa, compacting 1 minute/millimeter dwell time thickness gets afterproduct after the extrusion forming.
Also can add a certain amount of KH550, PVB film etc. as required.
Embodiment 2
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention, carry out according to the following step:
At first leftover material of dipping glass fibre screen cloth is cut into 20 centimetres short material, then,
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut the back soften processing with the organic solvent immersion, organic solvent is a methyl alcohol, and addition is 15% of a leftover material of dipping glass fibre screen cloth weight, and sealing was placed 15 hours behind the adding organic solvent.
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 12% mixes in mixer, mixture temperature is controlled to be 40 ℃, mixing time is controlled to be 30 minutes, again after extruser carries out banburying and mixes, extrude by extrusion, build standby with plastic sheeting.
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 50%, filler 22%, inner pattern releasing agent applicable 20% and colouring agent 8%; The batch mixing ball milling time is controlled to be 3 hours.
Filler is a talcum powder, and inner pattern releasing agent applicable is a graphite, and colouring agent is an iron oxide black pigment.
(3) do prefabricated idiosome: with size and the shape system embryo of the material behind the mixing, make prefabricated idiosome according to pressing, prefabricated idiosome oven dry back is standby, 60 ℃ of bake out temperatures, drying time 4 hours.
(4) hot-forming: that mould is heated, mold temperature is controlled to be 160 ℃, prefabricated idiosome is placed mould, and pressing process needs pump-down process, lifts patrix, close then, 5 times repeatedly, the waste gas that produces when making resin solidification is discharged, and briquetting pressure is controlled to be 20MPa, compacting 0.6 minute/millimeter dwell time thickness gets afterproduct after the extrusion forming.
Embodiment 3
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention, carry out according to the following step:
At first leftover material of dipping glass fibre screen cloth is cut into 25 centimetres short material, then,
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut the back soften processing with the organic solvent immersion, organic solvent is an acetone, and addition is 10% of a leftover material of dipping glass fibre screen cloth weight, and sealing was placed 10 hours behind the adding organic solvent.
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 16% mixes in mixer, mixture temperature is controlled to be 25 ℃, mixing time is controlled to be 25 minutes, again after extruser carries out banburying and mixes, extrude by extrusion, build standby with plastic sheeting.
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 42%, filler 28%, inner pattern releasing agent applicable 18% and colouring agent 12%; The batch mixing ball milling time is controlled to be 4 hours.
Filler is a hollow glass micropearl, and inner pattern releasing agent applicable is a calcium stearate, and colouring agent is a ferric oxide red colorant.
(3) do prefabricated idiosome: with size and the shape system embryo of the material behind the mixing, make prefabricated idiosome according to pressing, prefabricated idiosome oven dry back is standby, 50 ℃ of bake out temperatures, drying time 4 hours.
(4) hot-forming: that mould is heated, mold temperature is controlled to be 140 ℃, prefabricated idiosome is placed mould, and pressing process needs pump-down process, lifts patrix, close then, 3 times repeatedly, the waste gas that produces when making resin solidification is discharged, and briquetting pressure is controlled to be 20MPa, compacting 1.1 minutes/millimeter dwell times thickness gets afterproduct after the extrusion forming.
Embodiment 4
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention, carry out according to the following step:
At first leftover material of dipping glass fibre screen cloth is cut into 10 centimetres short material, then,
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut the back soften processing with the organic solvent immersion, organic solvent is an acetone, and addition is 13% of a leftover material of dipping glass fibre screen cloth weight, and sealing was placed 18 hours behind the adding organic solvent.
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 17% mixes in mixer, mixture temperature is controlled to be 40 ℃, mixing time is controlled to be 20 minutes, again after extruser carries out banburying and mixes, extrude by extrusion, build standby with plastic sheeting.
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 50%, filler 20%, inner pattern releasing agent applicable 20% and colouring agent 10%; The batch mixing ball milling time is controlled to be 3 hours.
Filler is a talcum powder, and inner pattern releasing agent applicable is a zinc stearate, and colouring agent is an iron oxide black pigment.
(3) hot-forming: that mould is heated, mold temperature is controlled to be 140-170 ℃, compound is placed mould, and pressing process needs pump-down process, lifts patrix, close then, 5 times repeatedly, the waste gas that produces when making resin solidification is discharged, and briquetting pressure is controlled to be 18MPa, compacting 1.2 minutes/millimeter dwell times thickness gets afterproduct after the extrusion forming.
Embodiment 5
The treatment process of leftover material of dipping glass fibre screen cloth of the present invention, carry out according to the following step:
At first leftover material of dipping glass fibre screen cloth is cut into 15 centimetres short material, then,
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut back the immersion with organic solvent soften processing, organic solvent is an industrial alcohol, addition is 15% of a leftover material of dipping glass fibre screen cloth weight, and sealing was placed 12 hours behind the adding organic solvent.
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 14% mixes in mixer, mixture temperature is controlled to be 35 ℃, mixing time is controlled to be 35 minutes, again after extruser carries out banburying and mixes, extrude by extrusion, build standby with plastic sheeting.
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 50%, filler 25%, inner pattern releasing agent applicable 10% and colouring agent 15%; The batch mixing ball milling time is controlled to be 3 hours.
Filler is a precipitated calcium carbonate, and inner pattern releasing agent applicable is a calcium stearate, and colouring agent is a ferric oxide red colorant.
(3) do prefabricated idiosome: with size and the shape system embryo of the material behind the mixing, make prefabricated idiosome according to pressing, prefabricated idiosome oven dry back is standby, 60 ℃ of bake out temperatures, drying time 5 hours.
(4) hot-forming: that mould is heated, mold temperature is controlled to be 155 ℃, prefabricated idiosome is placed mould, and pressing process needs pump-down process, lifts patrix, close then, 3 times repeatedly, the waste gas that produces when making resin solidification is discharged, and briquetting pressure is controlled to be 20MPa, compacting 0.8 minute/millimeter dwell time thickness gets afterproduct after the extrusion forming.
Claims (10)
1, a kind of treatment process of leftover material of dipping glass fibre screen cloth is characterized in that carrying out according to the following step:
(1) the softening processing: the leftover material of dipping glass fibre screen cloth weak point is cut back the immersion with organic solvent soften processing;
(2) mixing treatment: the methenamine powder that the leftover material of dipping glass fibre screen cloth after will softening adds weight 10-20% mixes;
Wherein: the percentage composition of methenamine powder ingredients by weight is: methenamine 15-65%, filler 20-30%, inner pattern releasing agent applicable 10-30% and colouring agent 5-15%;
(3) hot-forming: with the mould heating, the material behind the mixing is placed mould, extrusion forming gets afterproduct.
2, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 1, it is characterized in that before hot-forming material behind the mixing being made prefabricated idiosome handles, with size and the shape system embryo of the material behind the mixing according to pressing, it is standby to make prefabricated idiosome; When hot-forming, wait mould heating after, prefabricated idiosome is placed mould, extrusion forming gets afterproduct.
3, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 1, it is characterized in that in softening the processing, organic solvent is a kind of in industrial alcohol, methyl alcohol or the acetone, and addition is the 10-50% of leftover material of dipping glass fibre screen cloth weight.
4, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 3 is characterized in that adding behind the organic solvent sealing and placed 6--24 hour.
5, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 1 is characterized in that filler is a kind of in precipitated calcium carbonate, talcum powder or the hollow glass micropearl, and inner pattern releasing agent applicable is a kind of in zinc stearate, calcium stearate or the graphite.
6, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 1 is characterized in that the batch mixing ball milling time of methenamine powder is controlled to be 1.5-4 hour.
7, according to the treatment process of the described leftover material of dipping glass fibre screen cloth of the arbitrary claim of claim 1-6, the mixture temperature that it is characterized in that leftover material of dipping glass fibre screen cloth and methenamine powder is controlled to be 20-50 ℃, and mixing time is controlled to be 10-40 minute.
8, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 7, after it is characterized in that leftover material of dipping glass fibre screen cloth and the methenamine powder mixing, carry out banburying and mixing through extruser, after extruding by extrusion, build standby with plastic sheeting.
9, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 8 is characterized in that standby after the prefabricated idiosome oven dry, bake out temperature 50-60 ℃, and drying time 4-20 hour.
10, the treatment process of leftover material of dipping glass fibre screen cloth according to claim 1, it is characterized in that hot-forming in, mold temperature is 140-170 ℃, briquetting pressure 10-35MPA, dwell time 0.5-1.5 minute/millimeter thickness.
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| CN2008100169565A CN101306579B (en) | 2008-06-23 | 2008-06-23 | Process for treating leftover material of dipping glass fibre screen cloth |
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| CN2008100169565A CN101306579B (en) | 2008-06-23 | 2008-06-23 | Process for treating leftover material of dipping glass fibre screen cloth |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121321A (en) * | 2011-11-21 | 2013-05-29 | 辽宁辽杰科技有限公司 | Utilization method of continuous fiber reinforced thermoplastic resin composite prepreg tape leftover material |
| CN105694410A (en) * | 2015-11-28 | 2016-06-22 | 惠州卫生职业技术学院 | Low-floating fiber long-glass fiber and polycarbonate composite containing long-glass fiber |
| CN109624357A (en) * | 2018-12-10 | 2019-04-16 | 闫凯 | A kind of compound glass fibre mesh matrix and preparation method thereof |
| CN112571829A (en) * | 2020-11-25 | 2021-03-30 | 长春长光宇航复合材料有限公司 | Preparation method of high-performance composite material spray pipe part |
-
2008
- 2008-06-23 CN CN2008100169565A patent/CN101306579B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121321A (en) * | 2011-11-21 | 2013-05-29 | 辽宁辽杰科技有限公司 | Utilization method of continuous fiber reinforced thermoplastic resin composite prepreg tape leftover material |
| CN103121321B (en) * | 2011-11-21 | 2016-06-15 | 辽宁辽杰科技有限公司 | Continuous fiber reinforced thermoplastic resin composite material presoaked belt scrap stock Application way |
| CN105694410A (en) * | 2015-11-28 | 2016-06-22 | 惠州卫生职业技术学院 | Low-floating fiber long-glass fiber and polycarbonate composite containing long-glass fiber |
| CN105694410B (en) * | 2015-11-28 | 2018-02-16 | 惠州卫生职业技术学院 | A kind of low floating fine roving glass fiber, the polycarbonate composite material comprising the roving glass fiber |
| CN109624357A (en) * | 2018-12-10 | 2019-04-16 | 闫凯 | A kind of compound glass fibre mesh matrix and preparation method thereof |
| CN112571829A (en) * | 2020-11-25 | 2021-03-30 | 长春长光宇航复合材料有限公司 | Preparation method of high-performance composite material spray pipe part |
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