CN102391642A - Preparation method of modified monomer cast (MC) nylon 6 blending material - Google Patents
Preparation method of modified monomer cast (MC) nylon 6 blending material Download PDFInfo
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- CN102391642A CN102391642A CN2011102573324A CN201110257332A CN102391642A CN 102391642 A CN102391642 A CN 102391642A CN 2011102573324 A CN2011102573324 A CN 2011102573324A CN 201110257332 A CN201110257332 A CN 201110257332A CN 102391642 A CN102391642 A CN 102391642A
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Abstract
The invention discloses a preparation method of a modified monomer cast (MC) nylon 6 blending material. The MC nylon 6 blending material comprises the components by material ratio: 100 parts of caprolactam monomer, 20-40 parts of recycled polyethylene, 5-10 parts of compatibilizer, 20-40 parts of dimethylbenzene, 0.2-0.5 part of sodium hydroxide and 0.2-0.5 part of activating agent; the preparation method of the modified MC nylon 6 blending material comprises the steps of: heating the caprolactam monomer, melting, dehydrating the melted caprolactam monomer, and continuously dehydrating after the sodium hydroxide is added; then, adding the recycled polyethylene and the compatibilizer, stirring and leading the recycled polyethylene to be fully mixed in the caprolactam monomer melt until the recycled polyethylene is evenly dispersed; and finally, adding the activating agent, rapidly and evenly mixing, pouring the obtained mixture into a mould, and obtaining the recycled polyethylene/ MC nylon 6 blending material. The recycled polyethylene is modifier, so that the production cost of the blending material is greatly reduced, and the blending material is not influenced by few impurities in the modifier; furthermore, the prepared blending material is very stable in performance and quality as well as higher in shock resistance.
Description
Technical field
The invention belongs to organic high molecular compound in-situ polymerization modification technology field, that relate to is a kind of preparation method of modified MC nylon 6 intermingling materials.
Background technology
Monomer moulding casting nylon 6 (MC nylon 6) goods because of its mechanical property is good, intensity is high, wear-resisting; In industry, replace metallic substance such as steel, copper, aluminium in large quantities; Be widely used in fields such as chemical industry, machinery, petrochemical complex, electric power, electronics, weaving; But because the dimensional stability and the low-temperature flexibility of MC nylon 6 are relatively poor, therefore its range of application has received certain limitation.For this reason, people have carried out many-sided research to the modification of MC nylon 6, wherein with inorganic modified and organically-modified comparatively concentrated.The main means of inorganic modified method are in MC nylon 6, to add like one or more inorganic filling materials such as red phosphorus, glass microsphere, fiber, molybdenum dioxide, nanoparticles, and the modification result increases the dimensional stability of MC nylon 6 and low-temperature flexibility., this inorganic modified method requires in advance surface treatment to be carried out in mineral filler, to improve the consistency and the bonding force of inorganics and MC nylon-6 matrix body, its technology more complicated, unstable product quality.In recent years; Achievement with organism modified MC nylon 6 is more; For example notification number is that the Chinese patent of CN101831169A has been announced a kind of " toughened MC nylon 6 intermingling materials and preparation method thereof ", with HMW PEO modified MC nylon 6, has obtained good toughening effect; Notification number is that the Chinese patent of CN200610040172.7 discloses a kind of " preparation method of the in-situ polycondensation of thermoplastic polyurethane (TPU)/nylon 6 composite material ", and gained material impact toughness is greatly improved.
In the prior art, the used special properties-correcting agent price of organism modified MC nylon 6 is all than higher, and people attempt with very cheap recovery plastics as properties-correcting agent; But contain a little impurity because of reclaiming in the plastics; These impurity are difficult to eliminate, in case add in the MC nylon 6, will cause product properties to reduce and the quality instability; Therefore, can only be used as low value-added intermingling material with reclaiming plastics as the resulting intermingling material major part of properties-correcting agent at present.Up to the present, do not see about reporting with open source literature that reclaims PE modified MC nylon 6 and research yet.
Summary of the invention
The objective of the invention is to propose a kind of preparation method of modified MC nylon 6 intermingling materials; It is a properties-correcting agent to reclaim Vilaterm; Can not only reduce the production cost of intermingling material significantly; And do not receive the influence of a little impurity in the properties-correcting agent, and the intermingling material performance of preparation and quality are all very stable, and shock resistance is higher.
The technical scheme that realizes above-mentioned purpose is:
1. material and proportioning thereof (all in weight fraction):
100 parts of caprolactam monomers reclaim Vilaterm 20-40 part, expanding material 5-10 part, YLENE 20-40 part, sodium hydroxide 0.2-0.5 part, acvator 0.2-0.5 part;
Wherein, reclaiming Vilaterm is the LDPE that reclaims, a kind of or two kinds of mixtures among the HDPE; Acvator is any in tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), the triphenylmethane triisocyanate (JQ-1 glue); Expanding material is one or several the mixture among Vestolen PP 7052-maleic anhydride graft copolymer, grafted polyvinyl-maleic anhydride copolymer, KH550, the KH560;
2. preparation method follows these steps to accomplish successively:
2.1 100 parts of caprolactam monomers are heated to 135 ℃ in reaction vessel, make material melting, vacuum hydro-extraction is 10 to vacuum tightness
-2MPa continues 1-3 minute, adds sodium hydroxide, continues vacuum hydro-extraction 10-15 minute, and wherein, the weight ratio of sodium hydroxide and caprolactam monomer is 0.2-0.5: 100;
2.2 releasing vacuum; The abundant swelling thing that 20-40 part is reclaimed Vilaterm, 5-10 part expanding material and 20-40 part YLENE adds in above-mentioned 2.1; Be warming up to 145 ℃, stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
2.3 the said acvator of 0.2-0.5 part is added in above-mentioned 2.3, mix rapidly, be cast in the mould that is preheated to 160 ℃ insulation 20-30min, naturally cooling then.
Vilaterm is a kind of crystalline thermoplastic polymer, and LDPE has good flexibility, has plasticization effect, and HDPE has HS, H.T., is the good toughening material of polymkeric substance.The present invention utilizes recovery Vilaterm/MC nylon 6 mixing material that these characteristics make on the basis that keeps MC nylon 6 premium propertiess, has improved its toughness, has reduced production cost simultaneously, reaches the cyclic utilization of waste.Through the intermingling material that the inventive method makes, press GB/T-1040-1992 and measure its tensile strength: 46.7-52MPa; Press GB/T-9341-2000 and measure its flexural strength 56.5-74.9MPa, bending elastic modulus: 1.75 * 10
3-2.27 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 20.8-24.3KJ/m
2
Embodiment
Below in conjunction with embodiment is that the present invention is described further.
Embodiment 1
1.1, the 100kg caprolactam monomer is heated to 135 ℃ in reaction vessel, make material melting, vacuum hydro-extraction is 10 to vacuum tightness
-2MPa continues 1-3 minute, adds 0.2kg sodium hydroxide, continues vacuum hydro-extraction 10-15 minute;
1.2, remove vacuum, 20kg is reclaimed Vilaterm, 5kg grafted polyvinyl-maleic anhydride copolymer, 1LKH550 and 20L YLENE swelling thing add in above-mentioned 1.1; Be warming up to 145 ℃; Stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse, make homodisperse recovery Vilaterm/caprolactam monomer melt; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
1.3, the TDI of 0.5L is added in the recovery Vilaterm/caprolactam monomer mixed melt of above-mentioned 1.2 gained rapidly, mix rapidly; Be cast in the mould that is preheated to 160 ℃; Insulation 30min, naturally cooling promptly gets recovery Vilaterm of the present invention/MC nylon 6 mixing material.
The intermingling material that present embodiment makes is pressed GB GB/T-1040-1992 and is measured its tensile strength 48MPa; Press GB/T-9341-2000 and measure its flexural strength 69.2MPa; Bending elastic modulus: 2.10 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 20.8KJ/m
2
Embodiment 2
2.1, with 1.1 identical among the embodiment 1.
2.2, remove vacuum, 30kg is reclaimed Vilaterm, 6kg grafted polyvinyl-maleic anhydride copolymer, 1LKH550 and 30L YLENE swelling thing add in above-mentioned 2.1; Be warming up to 145 ℃; Stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse, make homodisperse recovery Vilaterm/caprolactam monomer melt; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
2.3, the TDI of 0.5L is added rapidly in the recovery Vilaterm/caprolactam monomer mixed melt of above-mentioned 2.2 gained, 1.3 is identical among subsequent step and the embodiment 1.
The intermingling material that present embodiment makes is pressed GB GB/T-1040-1992 and is measured its tensile strength 44.5MPa; Press GB/T-9341-2000 and measure its flexural strength 60.3MPa, bending elastic modulus: 1.98 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 21.2KJ/m
2
Embodiment 3
3.1, with 1.1 identical among the embodiment 1.
3.2, remove vacuum, 40kg is reclaimed Vilaterm, 6kg grafted polyvinyl-maleic anhydride copolymer, 1kg Vestolen PP 7052-maleic anhydride graft copolymer, 0.7L KH550,0.3L KH550 and 40L YLENE swelling thing add in above-mentioned 3.1; Be warming up to 145 ℃; Stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse, make homodisperse recovery Vilaterm/caprolactam monomer melt; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
3.3, the MDI of 0.5L is added rapidly in the recovery Vilaterm/caprolactam monomer mixed melt of above-mentioned 3.2 gained, 1.3 is identical among subsequent step and the embodiment 1.
The intermingling material that present embodiment makes is pressed GB GB/T-1040-1992 and is measured, and its tensile strength: 43.1MPa presses GB/T-9341-2000 and measures its flexural strength: 56.5MPa, bending elastic modulus: 1.75 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 22.5KJ/m
2
Embodiment 4
4.1, with 1.1 identical among the embodiment 1.
4.2, remove vacuum, 20kg is reclaimed Vilaterm, 4kg grafted polyvinyl-maleic anhydride copolymer, 1kg Vestolen PP 7052-maleic anhydride graft copolymer, 0.7L KH550,0.3L KH550 and 20L YLENE swelling thing add in above-mentioned 4.1; Be warming up to 145 ℃; Stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse, make homodisperse recovery Vilaterm/caprolactam monomer melt; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
4.3, the triphenylmethane triisocyanate of 0.5L is added rapidly in the recovery Vilaterm/caprolactam monomer mixed melt of above-mentioned 4.2 gained, 1.3 is identical among subsequent step and the embodiment 1.
The intermingling material that present embodiment makes is pressed GB GB/T-1040-1992 and is measured, and its tensile strength: 52MPa presses GB/T-9341-2000 and measures its flexural strength: 74.9MPa, bending elastic modulus: 2.27 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 22.5KJ/m
2
Embodiment 5
5.1, with 1.1 identical among the embodiment 1.
5.2, remove vacuum, 30kg is reclaimed Vilaterm, 5kg grafted polyvinyl-maleic anhydride copolymer, 1kg Vestolen PP 7052-maleic anhydride graft copolymer, 0.7L KH550,0.3L KH550 and 30L YLENE swelling thing add in above-mentioned 5.1; Be warming up to 145 ℃; Stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse, make homodisperse recovery Vilaterm/caprolactam monomer melt; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
5.3, the triphenylmethane triisocyanate of 0.5L is added rapidly in the recovery Vilaterm/caprolactam monomer mixed melt of above-mentioned 5.2 gained, 1.3 is identical among subsequent step and the embodiment 1.
The intermingling material that present embodiment makes is pressed GB GB/T-1040-1992 and is measured, and its tensile strength: 48.2MPa presses GB/T-9341-2000 and measures its flexural strength: 65.1MPa, bending elastic modulus: 1.99 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 23.8KJ/m
2
Embodiment 6
6.1, with 1.1 identical among the embodiment 1
6.2, remove vacuum, 40kg is reclaimed Vilaterm, 6kg grafted polyvinyl-maleic anhydride copolymer, 1kg Vestolen PP 7052-maleic anhydride graft copolymer, 0.7L KH550,0.3L KH550 and 40L YLENE swelling thing add in above-mentioned 6.1; Be warming up to 145 ℃; Stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse, make homodisperse recovery Vilaterm/caprolactam monomer melt; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
6.3, the MDI of 0.5L is added rapidly in the recovery Vilaterm/caprolactam monomer mixed melt of above-mentioned 6.2 gained, 1.3 is identical among subsequent step and the embodiment 1.
The intermingling material that present embodiment makes is pressed GB GB/T-1040-1992 and is measured its tensile strength: 46.7MPa; Press GB/T-9341-2000 and measure its flexural strength: 61.2MPa, bending elastic modulus: 1.89 * 10
3MPa; Press GB/T-1043-1993 and measure its notched Izod impact strength 24.3KJ/m
2
Claims (4)
1. the preparation method of modified MC nylon 6 intermingling materials is characterized in that:
(1) material and proportioning thereof (all in weight fraction):
100 parts of caprolactam monomers reclaim Vilaterm 20-40 part, expanding material 5-10 part, YLENE 20-40 part, sodium hydroxide 0.2-0.5 part, acvator 0.2-0.5 part;
(2) preparation method follows these steps to accomplish successively:
(2.1) 100 parts of caprolactam monomers are heated to 135 ℃ in reaction vessel, make material melting, vacuum hydro-extraction is 10 to vacuum tightness
-2MPa continues 1-3 minute, adds sodium hydroxide, continues vacuum hydro-extraction 10-15 minute, and wherein, the weight ratio of sodium hydroxide and caprolactam monomer is 0.2-0.5: 100;
(2.2) remove vacuum; The abundant swelling thing that 20-40 part is reclaimed Vilaterm, 5-10 part expanding material and 20-40 part YLENE adds in above-mentioned 2.1; Be warming up to 145 ℃, stir, make the recovery Vilaterm in the caprolactam monomer melt, be fully mixed to homodisperse; Vacuum is sloughed water and YLENE, vacuum tightness to 10 then
-2MPa continues 10-15 minute;
(2.3) the said acvator of 0.2-0.5 part is added in above-mentioned 2.3, mix rapidly, be cast in the mould that is preheated to 160 ℃, insulation 20-30min, naturally cooling then.
2. according to the preparation method of described modified MC nylon 6 intermingling materials of claim 1, it is characterized in that: said recovery Vilaterm is the LDPE that reclaims, a kind of or two kinds of mixtures among the HDPE.
3. according to the preparation method of described modified MC nylon 6 intermingling materials of claim 1, it is characterized in that: said acvator is any in tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), the triphenylmethane triisocyanate (JQ-1 glue).
4. according to the preparation method of described modified MC nylon 6 intermingling materials of claim 1, it is characterized in that: said expanding material is one or several the mixture among Vestolen PP 7052-maleic anhydride graft copolymer, grafted polyvinyl-maleic anhydride copolymer, KH550, the KH560.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102796256A (en) * | 2012-08-15 | 2012-11-28 | 扬州赛尔达尼龙制造有限公司 | Polypropylene toughened cast nylon and its preparation method |
| CN103450670A (en) * | 2013-08-26 | 2013-12-18 | 河北辛集腾跃实业有限公司 | Self-lubricating non-metallic side bearing plate as well as material and production technology thereof |
| CN103552812A (en) * | 2013-11-20 | 2014-02-05 | 陈红升 | Composite material roller and preparation method thereof |
| CN105504265A (en) * | 2015-12-31 | 2016-04-20 | 华侨大学 | Anionic in-situ preparation method of reclaimed polyacrylonitrile fiber (R-PAN) in-situ-reinforced monomer cast (MC) nylon 6 composite material |
| CN105504796A (en) * | 2015-12-31 | 2016-04-20 | 华侨大学 | Anionic in-situ preparation method of renewable ABS plastic in-situ toughening MC nylon 6 composite material |
| CN108487876A (en) * | 2018-04-09 | 2018-09-04 | 雅安万利橡塑密封技术有限责任公司 | The production technology of Operating Pressure annular space dynamic sealing wearing piece |
| CN108641351B (en) * | 2018-04-09 | 2020-01-21 | 安徽建筑大学 | Preparation method of powdered polyethylene toughened cast nylon |
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| CN101831169A (en) * | 2010-05-06 | 2010-09-15 | 赵明久 | Toughened MC nylon blending material and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796256A (en) * | 2012-08-15 | 2012-11-28 | 扬州赛尔达尼龙制造有限公司 | Polypropylene toughened cast nylon and its preparation method |
| CN103450670A (en) * | 2013-08-26 | 2013-12-18 | 河北辛集腾跃实业有限公司 | Self-lubricating non-metallic side bearing plate as well as material and production technology thereof |
| CN103450670B (en) * | 2013-08-26 | 2016-03-02 | 河北辛集腾跃实业有限公司 | A kind of nonmetal side bearing dish of self-lubricating and material thereof and production technique |
| CN103552812A (en) * | 2013-11-20 | 2014-02-05 | 陈红升 | Composite material roller and preparation method thereof |
| CN105504265A (en) * | 2015-12-31 | 2016-04-20 | 华侨大学 | Anionic in-situ preparation method of reclaimed polyacrylonitrile fiber (R-PAN) in-situ-reinforced monomer cast (MC) nylon 6 composite material |
| CN105504796A (en) * | 2015-12-31 | 2016-04-20 | 华侨大学 | Anionic in-situ preparation method of renewable ABS plastic in-situ toughening MC nylon 6 composite material |
| CN108487876A (en) * | 2018-04-09 | 2018-09-04 | 雅安万利橡塑密封技术有限责任公司 | The production technology of Operating Pressure annular space dynamic sealing wearing piece |
| CN108641351B (en) * | 2018-04-09 | 2020-01-21 | 安徽建筑大学 | Preparation method of powdered polyethylene toughened cast nylon |
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Application publication date: 20120328 |