CN102134462B - Hot melt adhesive for polyster fibre reinforced PVC flexible pipe and preparation method thereof - Google Patents
Hot melt adhesive for polyster fibre reinforced PVC flexible pipe and preparation method thereof Download PDFInfo
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- CN102134462B CN102134462B CN 201010617472 CN201010617472A CN102134462B CN 102134462 B CN102134462 B CN 102134462B CN 201010617472 CN201010617472 CN 201010617472 CN 201010617472 A CN201010617472 A CN 201010617472A CN 102134462 B CN102134462 B CN 102134462B
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Abstract
The invention discloses a hot melt adhesive for a polyster fibre reinforced PVC flexible pipe and a preparation method thereof. The formula comprises the following raw materials in percentage by weight: 50 percent-80 percent of ethylene/vinyl acetate copolymer(EVA), 5 percent-20 percent of ethylene/vinyl acetate copolymer(EVA) grafted master batches, 5 percent-30 percent of terpolymer, 0.01 percent-2 percent of thermal oxidization stabilizing agents, 0.01 percent-3 percent of ultraviolet absorbers and light stabilizers; and the hot melt adhesive is obtained by carrying out extrusion and granulation through the plasticizing blending process under the adoption of a double-screw extruder. The hot melt adhesive has excellent processability, high transparency, good weather resistance as well as high-strength, stable and durable adhesion with polyster fibres; and during production, the hot melt adhesives are extruded and then coated on a polyster fibre strips, the fibre strips coated with the adhesives are woven and then compounded with PVC inner and outer pipes to obtain the polyster fibre reinforced PVC flexible pipe.
Description
Technical field
The present invention relates to the thermosol technical field, particularly relate to a kind of hot melt adhesive for polyster fibre reinforced PVC flexible pipe and preparation method thereof, be mainly used in and manufacture polyster fibre Reinforced PVC flexible pipe.
Background technology
Polyster fibre reinforced polyvinyl chloride (PVC) flexible pipe is different from when common polyvinyl chloride (PVC) flexible pipe part is the inherent extrusion moulding of tube wall and accompanies the grid that one deck is woven into by polyster fibre, this polyster fibre reinforced polyvinyl chloride flexible pipe, because its moulding is by take polyvinyl chloride as main plurality of raw materials combination forming, there is again latticed man-made fiber to play therebetween the effect of enhancing, so this plastics tubing except have the PVC flexible pipe corrosion-resistant, body is light and soft flexible performance, can also bear certain pressure in when work.At present, in the transfer line of the gas in industrial equipments and Transport Machinery or liquid, be used widely.
But different due to the chemistry of PVC material and polyster fibre and physical properties, As time goes on, particularly expand with heat and contract with cold and the external stress effect, the two easily produces gap and causes separating at contact interface, cause the effective thickness attenuation of tubing itself, tube wall infiltration, until explosion, had a strong impact on service ability and the work-ing life of tubing.Thereby, how to improve the bonding stability of fiber and the two interface of PVC material in fiber reinforcement PVC flexible pipe and become the current important topic that needs research.
Chinese patent (publication number is CN 201173345Y) has been introduced a kind of flexible pipe that bears highly pressurised liquid or gas conveying, comprises the enhancement layer between inner tube, skin and inner tube and skin; Inner tube can be to be made by ethene, or is made by （Fen Mo/Ke Li） Nylon11 in powder/granular form or nylon 12, or is made by polyoxymethylene, or is made by Teflon; Skin has polyvinyl chloride or Polyurethane Thermoplastic Elastomer to make, or is made by （Fen Mo/Ke Li） Nylon11 in powder/granular form or nylon 12; Enhancement layer is made after establishment by the polyster fibre long filament, or is made after establishment by aramid fiber, or is made after establishment by steel wire or Stainless Steel Wire.
Chinese patent (publication number is CN 2584993Y) has been introduced a kind of Multipurpose flexible hose, for the deficiency that overcomes existing flexible pipe, can under the positive/negative pressure state, work stably in a long term.Its technical scheme is: the tube wall of described flexible pipe forms by three layers, be followed successively by from inside to outside: the first layer is PVC negative pressure enhancement layer, establish high strength elastic body skeleton in the negative pressure enhancement layer, the second layer is the malleation enhancement layer that the high strength fibre cloth forms, the 3rd layer is protective layer, and each structural sheet melting is integrated.
Chinese patent (publication number is CN 2434510Y) has been introduced a kind of fiber reinforced plastic high pressure hose, it carrys out the Reinforced PVC flexible pipe with the layer of fibers more than 2 layers (best layer 2-4), wherein between layer of fibers with Polyurethane Thermoplastic Elastomer or thermoplasticity EVA elastomeric isolation fabric reinforcement, to prevent between layer of fibers the phase mutual friction and to increase the bonding properties that interconnects to improve body itself between layer of fibers.
The structure that above-mentioned patent application mainly is mentioned to fiber reinforcement PVC flexible pipe forms and design, and it is not mentioned to the main thermosol that uses the EVA resin to carry out graft modification and prepare, also not mentionedly to this thermosol, be mainly used in strengthening the bonding of polyster fibre material and PVC material interface, more not mentioned to this thermosol be while producing by Extrusion Coating on the polyster fibre silk ribbon, the fiber silk ribbon that has applied sizing agent is compound with the PVC inner and outer pipes and make polyster fibre Reinforced PVC flexible pipe again after braiding.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the object of the present invention is to provide a kind of hot melt adhesive for polyster fibre reinforced PVC flexible pipe, its processing characteristics is excellent, transparency is high, good weatherability, with PVC, the polyster fibre bonding strength is high and lasting stability, is mainly used in the bonding of fiber and PVC material interface in polyster fibre Reinforced PVC flexible pipe.
Another object of the present invention is to provide the preparation method of above-mentioned hot melt adhesive for polyster fibre reinforced PVC flexible pipe.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of hot melt adhesive for polyster fibre reinforced PVC flexible pipe, its composition of raw materials counts by weight percentage and comprises following component: 50%-80% ethylene-vinyl acetate copolymer (EVA), 5%-20% ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, 5%-30% terpolymer, 0.01%-2% thermal oxidation stabilizer, 0.01%-3% UV light absorber and 0.01%-3% photostabilizer.
A kind of preparation method of hot melt adhesive for polyster fibre reinforced PVC flexible pipe is by each component of above-mentioned raw materials formula according to the above ratio, adopts twin screw extruder to implement plasticizing blending technology extruding pelletization.
By technique scheme, the beneficial effect that the present invention has is:
Its processing characteristics of hot melt adhesive for polyster fibre reinforced PVC flexible pipe of the present invention is excellent, transparency is high, with PVC, the polyster fibre bonding strength is high and lasting stability, during production by Extrusion Coating on the polyster fibre silk ribbon, applied the fiber silk ribbon of sizing agent after braiding, compound with the PVC inner and outer pipes and make polyster fibre Reinforced PVC flexible pipe again, solved the strength and stability problem of polyster fibre and the two bonding interface of PVC material, the service ability of finished product tubing and work-ing life are significantly improved.
Embodiment
Below by specific embodiment, the present invention is described in further detail, but the present invention is not limited to following embodiment.
Hot melt adhesive for polyster fibre reinforced PVC flexible pipe of the present invention, its formula counts by weight percentage and comprises following component: 50%-80% ethylene-vinyl acetate copolymer (EVA), 5%-20% ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, 5%-30% terpolymer, 0.01%-2% thermal oxidation stabilizer, 0.01%-3% UV light absorber and 0.01%-3% photostabilizer.
The preparation method of above-mentioned hot melt adhesive for polyster fibre reinforced PVC flexible pipe is to adopt twin screw extruder to implement plasticizing blending technology extruding pelletization.
Above-mentioned ethylene-vinyl acetate copolymer (EVA) is selected from the vinyl acetate (VAC) that content is the 5-40% scope, melting index (MI)≤30g/10min.
Above-mentioned ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, therein ethylene-acetate ethylene copolymer (EVA) is selected from the vinyl acetate (VAC) that content is the 5-40% scope, melting index (MI)≤30g/10min; Wherein unsaturated grafted monomer is selected from maleic anhydride or acrylate; Initiator wherein is selected from dicumyl peroxide or benzoyl peroxide; Adopt twin screw extruder to implement reaction and extrude preparation EVA grafting masterbatch.
Above-mentioned terpolymer is selected from ethylene-acrylate-glycidyl methacrylate (GMA) terpolymer or ethene-vinyl acetate-carbon monoxide (EVACO) terpolymer.
Above-mentioned thermal oxidation stabilizer is metal soap or Benzopyranone kind stabilizer.
Above-mentioned UV light absorber is chlorination benzotriazole category or benzophenone UV light absorber;
Above-mentioned photostabilizer is for being subject to the resistance type phosphorous acid esters or being subject to resistance type methyl piperidine class photostabilizer.
In above-mentioned expressing technique, forcing machine length-to-diameter ratio L/D >=40: 1, processing temperature 120-180 ℃.
embodiment 1
The composition of raw materials of hot melt adhesive for polyster fibre reinforced PVC flexible pipe composition (following proportioning is weight percentage) is as follows:
69.7% ethylene-vinyl acetate copolymer (EVA)
15% ethylene-vinyl acetate copolymer (EVA) grafting masterbatch
15% ethylene-acrylate-glycidyl methacrylate (GMA) terpolymer
0.2% thermo-stabilizer
0.03% UV light absorber and 0.07% photostabilizer;
Wherein, (following proportioning is weight percent to the composition of raw materials of ethylene-vinyl acetate copolymer (EVA) grafting masterbatch
Content, summation is 100%) as follows:
98.4% ethylene-vinyl acetate copolymer (EVA)
,vinyl acetate (VAC)
content is the 5-40% scope, melting index (MI)≤30g/10min
1.2% maleic anhydride
0.4% dicumyl peroxide;
Adopt twin screw extruder to implement plasticizing blending technology extruding pelletization, the length-to-diameter ratio L/D=40 of forcing machine above-mentioned each component: 1, processing temperature 120-180 ℃.First make ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, then make hot melt adhesive for polyster fibre reinforced PVC flexible pipe of the present invention.
embodiment 2
Hot melt adhesive for polyster fibre reinforced PVC flexible pipe composition material formula (following proportioning is weight percentage) is as follows:
59.6% ethylene-vinyl acetate copolymer (EVA)
18% ethylene-vinyl acetate copolymer (EVA) grafting masterbatch
22% ethylene-acrylate-glycidyl methacrylate (GMA) terpolymer
0.25% thermo-stabilizer
0.05% UV light absorber and 0.1% photostabilizer;
Wherein, (following proportioning is weight percent to the composition of raw materials of ethylene-vinyl acetate copolymer (EVA) grafting masterbatch
Content, summation is 100%) as follows:
98.7% ethylene-vinyl acetate copolymer (EVA)
,vinyl acetate (VAC)
content is the 5-40% scope, melting index (MI)≤30g/10min
1.0% maleic anhydride
0.3% dicumyl peroxide;
Adopt twin screw extruder to implement plasticizing blending technology extruding pelletization, the length-to-diameter ratio L/D=40 of forcing machine above-mentioned each component: 1, processing temperature 120-180 ℃.First make ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, then make hot melt adhesive for polyster fibre reinforced PVC flexible pipe of the present invention.
embodiment 3
Hot melt adhesive for polyster fibre reinforced PVC flexible pipe compound composition of raw materials (following proportioning is weight percentage) is as follows:
74.5% ethylene-vinyl acetate copolymer (EVA)
10% ethylene-vinyl acetate copolymer (EVA) grafting masterbatch
15% ethylene-acrylate-glycidyl methacrylate (GMA) terpolymer
0.2% thermo-stabilizer
0.1% UV light absorber and 02% photostabilizer;
Wherein, the formula of ethylene-vinyl acetate copolymer (EVA) grafting masterbatch is as follows:
98.3% ethylene-vinyl acetate copolymer (EVA)
;vinyl acetate (VAC)
content is the 5-40% scope, melting index (MI)≤30g/10min
1.3%
acrylate 
0.4%
benzoyl peroxide 
Adopt twin screw extruder to implement plasticizing blending technology extruding pelletization, the length-to-diameter ratio L/D=40 of forcing machine above-mentioned each component: 1, processing temperature 120-180 ℃.First make ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, then make hot melt adhesive for polyster fibre reinforced PVC flexible pipe of the present invention.
embodiment 4
Hot melt adhesive for polyster fibre reinforced PVC flexible pipe composite formula (100%) is as follows:
51.1% ethylene-vinyl acetate copolymer (EVA)
20% ethylene-vinyl acetate copolymer (EVA) grafting masterbatch
28% ethylene-acrylate-glycidyl methacrylate (GMA) terpolymer
0.5% thermo-stabilizer
0.1% UV light absorber and 0.3% photostabilizer;
Wherein, the formula of ethylene-vinyl acetate copolymer (EVA) grafting masterbatch is as follows:
98.5% ethylene-vinyl acetate copolymer (EVA)
,vinyl acetate (VAC)
content is the 5-40% scope, melting index (MI)≤30g/10min
12%
acrylate
0.3%
benzoyl peroxide 
Adopt twin screw extruder to implement plasticizing blending technology extruding pelletization, the length-to-diameter ratio L/D=40 of forcing machine above-mentioned each component: 1, processing temperature 120-180 ℃.First make ethylene-vinyl acetate copolymer (EVA) grafting masterbatch, then make hot melt adhesive for polyster fibre reinforced PVC flexible pipe of the present invention.
Product moulding polyster fibre Reinforced PVC flexible pipe 1 by embodiment 1, the product moulding polyster fibre Reinforced PVC flexible pipe 2 of embodiment 2, execute the product moulding polyster fibre Reinforced PVC flexible pipe 3 of example 3, execute the product moulding polyster fibre Reinforced PVC flexible pipe 4 of example 4, do not contain same material same specification (the internal diameter 12mm of thermosol, external diameter 16mm) ordinary polyester fiber reinforcement PVC flexible pipe is for pipe 5, as shown in table 1 with contrast test result under condition.
The contrast test result of the different PVC flexible pipes of table 1
| Project | Unit | Pipe 1 | Pipe 2 | Pipe 3 | Pipe 4 | Pipe 5 |
| The tube wall tensile strength | MPa | 14.7 | 14.9 | 14.9 | 15.2 | 12.6 |
| Elongation at break | ％ | 418 | 426 | 431 | 439 | 272 |
| Tube wall ectonexine stripping strength | N/cm | 20.1 | 20.3 | 20.2 | 20.4 | 10.3 |
| The water flowing burstpressures | MPa | 3.0 | 3.2 | 3.1 | 3.3 | 1.9 |
As can be seen from Table 1, the polyster fibre Reinforced PVC flexible pipe that contains embodiment 1, embodiment 2, embodiment 3, embodiment 4 products has significantly strengthened the bonding strength at polyster fibre and the inside and outside tube wall of PVC interface, can significantly strengthen the service ability of polyster fibre Reinforced PVC flexible pipe and increase the service life.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, do not break away from the technical solution of the present invention content therefore every, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. a hot melt adhesive for polyster fibre reinforced PVC flexible pipe is characterized in that: its composition of raw materials percentage composition by weight calculates and comprises following component: 50%-80% ethylene-vinyl acetate copolymer, 5%-20% ethylene-vinyl acetate copolymer grafting masterbatch, 5%-30% terpolymer, 0.01%-2% thermal oxidation stabilizer, 0.01%-3% UV light absorber and 0.01%-3% photostabilizer; Described terpolymer is selected from ethylene-acrylate-glycidyl methacrylate terpolymer or ethene-vinyl acetate-carbon monoxide terpolymer;
Described ethylene-vinyl acetate copolymer is selected from the vinyl acetate that content is the 5%-40% scope, melting index≤30g/10min;
Described ethylene-vinyl acetate copolymer grafting masterbatch, wherein unsaturated grafted monomer is selected from acrylate; Initiator wherein is selected from dicumyl peroxide or benzoyl peroxide; Adopt twin screw extruder to implement to react to extrude to prepare ethylene-vinyl acetate copolymer grafting masterbatch.
2. hot melt adhesive for polyster fibre reinforced PVC flexible pipe according to claim 1, it is characterized in that: the length-to-diameter ratio of described twin screw extruder is L/D >=40:1, processing temperature is 120-180 ℃.
3. hot melt adhesive for polyster fibre reinforced PVC flexible pipe according to claim 1, it is characterized in that: described thermal oxidation stabilizer is metal soap or Benzopyranone kind stabilizer.
4. hot melt adhesive for polyster fibre reinforced PVC flexible pipe according to claim 1, it is characterized in that: described UV light absorber is chlorination benzotriazole category or benzophenone UV light absorber.
5. hot melt adhesive for polyster fibre reinforced PVC flexible pipe according to claim 1, it is characterized in that: described photostabilizer is for being subject to the resistance type phosphorous acid esters or being subject to resistance type methyl piperidine class photostabilizer.
6. the preparation method of the described hot melt adhesive for polyster fibre reinforced PVC flexible pipe of arbitrary claim in a claim 1 to 5, it is characterized in that: it is to adopt twin screw extruder to implement plasticizing blending technology extruding pelletization.
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| CN 201010617472 CN102134462B (en) | 2010-12-31 | 2010-12-31 | Hot melt adhesive for polyster fibre reinforced PVC flexible pipe and preparation method thereof |
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| CN102134462B true CN102134462B (en) | 2013-04-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102952348A (en) * | 2011-08-22 | 2013-03-06 | 爱康企业集团(上海)有限公司 | Ultraviolet resistant PVC-U rain tube |
| CN103102814A (en) * | 2013-01-28 | 2013-05-15 | 苏州井上高分子新材料有限公司 | EVA (ethylene-vinyl acetate) hot-melting adhesive and preparation method thereof |
| CN103214994A (en) * | 2013-03-21 | 2013-07-24 | 马鞍山市中澜橡塑制品有限公司 | Hot melt adhesive with maleic anhydride grafted ethylene-ethyl acetate copolymer as main material and preparation method thereof |
| CN103509492A (en) * | 2013-09-18 | 2014-01-15 | 滁州市光威化工有限公司 | Polyester fiber-containing hot melt adhesive |
| CN108130158B (en) * | 2018-01-17 | 2021-01-22 | 内蒙古汉功润滑油有限公司 | Biodegradable environment-friendly lubricating oil |
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| CN1753964A (en) * | 2003-02-25 | 2006-03-29 | 陶氏欧洲股份有限公司 | Reactive hot melt adhesive |
| CN101423733A (en) * | 2008-11-18 | 2009-05-06 | 广州市鹿山化工材料有限公司 | Method for preparing transparent hot melt adhesive for PP-R plastic-aluminum steady state tube |
| CN101519513A (en) * | 2009-03-27 | 2009-09-02 | 广州市鹿山化工材料有限公司 | Metallocene polypropylene modified material for corrosion-inhibiting coating of steel pipe and preparation method and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753964A (en) * | 2003-02-25 | 2006-03-29 | 陶氏欧洲股份有限公司 | Reactive hot melt adhesive |
| CN101423733A (en) * | 2008-11-18 | 2009-05-06 | 广州市鹿山化工材料有限公司 | Method for preparing transparent hot melt adhesive for PP-R plastic-aluminum steady state tube |
| CN101519513A (en) * | 2009-03-27 | 2009-09-02 | 广州市鹿山化工材料有限公司 | Metallocene polypropylene modified material for corrosion-inhibiting coating of steel pipe and preparation method and application thereof |
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Effective date of registration: 20201109 Address after: 510700 No.22, Pubei Road, YUNPU Industrial Zone, Huangpu District, Guangzhou City, Guangdong Province Patentee after: GUANGZHOU LUSHAN NEW MATERIALS Co.,Ltd. Patentee after: Jiangsu Lushan New Material Co.,Ltd. Address before: 510530, No. 22, Po Bei Road, Po Po Industrial Zone, Whampoa District, Guangdong, Guangzhou Patentee before: GUANGZHOU LUSHAN NEW MATERIALS Co.,Ltd. |