CN103232595A - Modified MC nylon - Google Patents
Modified MC nylon Download PDFInfo
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- CN103232595A CN103232595A CN2012101095387A CN201210109538A CN103232595A CN 103232595 A CN103232595 A CN 103232595A CN 2012101095387 A CN2012101095387 A CN 2012101095387A CN 201210109538 A CN201210109538 A CN 201210109538A CN 103232595 A CN103232595 A CN 103232595A
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Abstract
The invention relates to modified MC nylon which is characterized in that: caprolactam is adopted as a raw material; a catalyst and an activating agent are added under special conditions; with a series of special combined modification technologies such as strengthening and toughening, and with mold direct injection, fast polymerization molding, and hot de-molding methods, a series of modified MC nylon materials is produced. According to the invention, on a basis of reduced reaction temperature and reduced reaction time, stable high-molecular-weight modified MC nylon material can be obtained. A product linear expansion coefficient is reduced ((3-5)*10<-5>), a product elongation at break is 37-40%, and a product tensile strength is 72-75MPa. The modified MC nylon product has good strength, good toughness, and good cold hardiness. The product has excellent dimensional stability and precise performance indexes. The modified MC nylon provided by the invention can be widely applied in the fields such as military industry, metallurgy, mining, textile, chemicals, papermaking, power energy, petroleum machinery, and the like.
Description
Technical field
The present invention is a kind of modified MC nylon material, relates to the synthetic and modification manufacture field of polymkeric substance.The modified MC nylon material elongation at break of preparation and tensile strength are stable, every technical indicator is accurate, use in enterprises such as military project and have outstanding performance.
Background technology
Nylon is thermoplasticity, crystallinity, hygroscopic macromolecular material, has special chemistry and physical properties, is widely used in the every field of social production, is first of the five large-engineering materials.But because shortcomings such as its some long-term existence easily absorb water, photostabilization is poor, design requirements is strict, tensile strength is low, thermal expansivity is low have limited the scope of using.The manufacturing of common industrial nylon 6 is with the fusion of monomer hexanolactam, add a spot of water (or alcohol) and stablizer such as organic acid, amine etc., ring-opening polymerization is hydrolyzed about autoclave or polymerizing pipe internal heating to 250 ℃, constantly emit moisture in the reaction process, the polymerization degree increases gradually, and molecular weight is generally below 30,000, and reaction needed is the starting time of length, entire operation needed more than 20-30 hour, and the nylon of the small molecular weight that obtains has above a lot of shortcoming.Dry hexanolactam is melted into liquid, under 265 ℃ of boiling states, add a spot of solid sodium hydroxide at dissolving a spot of sodium Metal 99.5 reheat to 240 ℃ about 100 ℃ or with hexanolactam, as long as several minutes can obtain the high viscosity polymer, molecular weight can reach 100,000, though molecular weight can get a promotion, when continuing heating, molecular weight can descend rapidly, alter a great deal, be difficult to control, can influence the quality of product equally.Because special chemistry and physical properties, solve its shortcoming is the difficult problem that R﹠D institution and manufacturing enterprise face always.
Modified nylon; both can increase the special purpose of nylon, capable of reducing energy consumption and loaded down with trivial details metal manufacturing procedure playing very important effect in national economy is produced again; while can be the national resources utilization ratio again and important contribution is made in environment protection, has vast potential for future development in China.
Summary of the invention
The objective of the invention is to develop a kind of modified MC nylon material, can replace the steel material to be widely used in fields such as military project, metallurgy, mine, weaving, chemical industry, papermaking, electric power energy, petroleum machinery.
In order to have solved shortcomings such as the material in the nylon material is inhomogeneous, tensile strength is low, resistance to impact shock is low, extension at break is unstable, linear expansivity is big, the present invention has developed polymerization and the complete processing of modified MC nylon.It is raw material that the present invention takes the hexanolactam with liquid state, makees catalyzer with alkali, does the method that activator carries out polyreaction with isocyanates or amine, adds polyoxyethylene and methyl acid phosphate triamine, directly injects the moulding of mould rapid polymerization.And then the method that adopts the hot demoulding obtains the modified MC nylon goods.Utilize technology of the present invention to obtain stable macromolecule modified MC nylon material in reduction temperature of reaction and the basis in reaction times.The modified MC nylon material product has the accuracy of good toughness, winter hardiness and performance index.
Characteristics of the present invention are:
(1) modified MC nylon of development and production of the present invention is to be raw material with the hexanolactam, in the presence of alkali catalyst, add activator, directly injects the mould rapid polymerization and moulding.Technology has realized the following anionic polymerisation of fusing point.Therefore compare that common nylon contains that amount of monomer is few, molecular weight is high, stretch-proof, shock strength height, frictional coefficient is little, hardness is high, antifatigue, creep resistance, anti-shock-absorbing, noise reduction sound, anti-most of corrosive mediums.
(2) the present invention improves hexanolactam melt temperature to 100-150 ℃ in technology, increasing every mol hexanolactam catalyst consumption restrains to 0.05%-0.3%, increase activator level to 0.4%-1%, add toughener and toughner, increased the accuracy of intensity, toughness, winter hardiness and the performance index of nylon.
(3) the present invention adopts the method for the hot demoulding, thermal treatment destressing in 120-170 ℃ transformer oil, and the time is about 15min/mm thickness, and foundry goods slowly cooled off after thermal treatment finished.In the time of can avoiding the big or geometrical shape of products thickness complicated like this, convex part bursts under the effect of internal stress.Accurately the control line coefficient of expansion is in (3～5) * 10
-5, elongation at break 37～40%, tensile strength 72～75MPa.
The modified MC nylon elongation at break of development and production of the present invention and tensile strength are stable, and every technical indicator is accurate, and it is particularly outstanding especially must to use performance in military enterprise.As 155 howitzer obturator rings good auxiliary holding one's breath and lubrication arranged in bore, and high abrasion, high tenacity, high strength, the unanimity that comes off in the outer 30m of gun muzzle not only satisfies ballisticperformances, and has improved the precision of point of impact.The modified MC nylon product of development and production of the present invention has been accepted military project manufacturing concern check, uses at the obturating system of multiple shell.Practical result proves that common nylon decylization scope is at 0～50 meter, and the obturating system decylization scope that applying modified MC nylon is made narrows down to 10～30 meters, has improved range and the precision of shell greatly.
Some performances of modification of nylon of the present invention and other nylon relatively see Table 1.
The common nylon of table 1 (PA6) compares with the performance of MC nylon, modified MC nylon
Description of drawings
Figure is the modified MC nylon process flow diagram.
Embodiment
Below be embodiments more of the present invention, but be not limited only to this.
Embodiment one:
The 100g hexanolactam is made it complete fusion at 130 ℃, moisture is removed in underpressure distillation, in system, add 0.2gNaOH, 0.6g methyl acid phosphate triamine and N-benzoyl caprolactam and and 10g polynite and 5g liquid polybutadiene, inject the moulding of mould rapid polymerization.Adopt the method for the hot demoulding then, thermal treatment destressing in 150 ℃ transformer oil, the time is about 15min/mm thickness, and foundry goods slowly cooled off after thermal treatment finished.
Embodiment two:
The 100g hexanolactam is made it complete fusion at 110 ℃; moisture is removed in underpressure distillation, adds the 0.1g sodium hydride, 0.8g methyl acid phosphate triamine and ethanoyl hexanolactam and 6g flyash in system; 4g attapulgite and 7g polyoxyethylene inject the moulding of mould rapid polymerization.Adopt the method for the hot demoulding then, thermal treatment destressing in 130 ℃ transformer oil, the time is about 30min/mm thickness, and foundry goods slowly cooled off after thermal treatment finished.
Embodiment three:
The 100g hexanolactam is made it complete fusion at 150 ℃, and moisture is removed in underpressure distillation, adds the 0.3g sodium methylate in the system, the 1.0g diphenylmethanediisocyanate and and 3g kaolin, the 5g mica, 4g urethane injects the moulding of mould rapid polymerization.Adopt the method for the hot demoulding then, thermal treatment destressing in 160 ℃ transformer oil, the time is about 20min/mm thickness, and foundry goods slowly cooled off after thermal treatment finished.
Embodiment four:
The 100g hexanolactam is made it complete fusion at 120 ℃, and moisture is removed in underpressure distillation, adds 0.2gKOH in system, and 0.4g tolylene diisocyanate and 12g carbon fiber and 5g polyethers inject the moulding of mould rapid polymerization.Adopt the method for the hot demoulding then, thermal treatment destressing in 140 ℃ transformer oil, the time is about 25min/mm thickness, and foundry goods slowly cooled off after thermal treatment finished.
Claims (5)
1. modified MC nylon material, it is characterized in that utilizing hexanolactam to be raw material, add catalyzer, activator under given conditions, a series of special composite modification technologies such as adopt to strengthen, toughness reinforcing, produce series modified MC nylon material by the method for direct injection mould rapid polymerization moulding and the hot demoulding.
2. the catalyzer of modified MC nylon as claimed in claim 1 is KOH, NaOH, NaCO
3, sodium hydride, sodium methylate, one or more in the organometallic compound, consumption are 0.05%～0.3%.
3. the activator of modified MC nylon as claimed in claim 1 is tolylene diisocyanate, diphenylmethanediisocyanate, triphenylmethane triisocyanate; the ethanoyl hexanolactam; the N-benzoyl caprolactam, one or more of methyl acid phosphate triamine, consumption are 0.4%～1%.
4. the enhancing modified of modified MC nylon as claimed in claim 1 is finished by adding toughener, and toughener comprises talcum powder, flyash, rare earth, mica, Al
2O
3, kaolin, polynite, attapulgite, Mg (OH)
2, carbon fiber, one or more in the glass fibre, consumption are 5%～15%.
5. the toughening modifying of modified MC nylon as claimed in claim 1 is finished by adding toughner, and toughner comprises polyoxyethylene, polyester, and urethane, polyethers, one or more in the liquid polybutadiene, consumption are 4%～10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101095387A CN103232595A (en) | 2012-04-16 | 2012-04-16 | Modified MC nylon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101095387A CN103232595A (en) | 2012-04-16 | 2012-04-16 | Modified MC nylon |
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| CN103232595A true CN103232595A (en) | 2013-08-07 |
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| CN2012101095387A Pending CN103232595A (en) | 2012-04-16 | 2012-04-16 | Modified MC nylon |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834163A (en) * | 2013-12-03 | 2014-06-04 | 广东科进尼龙管道制品有限公司 | Foam polyurethane-modified monomer casting (MC) nylon composite material and preparation method thereof |
| CN104695049A (en) * | 2015-03-06 | 2015-06-10 | 苏州爱立方服饰有限公司 | Fiber-reinforced fabric material and preparation method thereof |
| CN105131278A (en) * | 2015-09-21 | 2015-12-09 | 张文哲 | High-performance casting nylon and preparation method thereof |
| CN108203506A (en) * | 2018-02-01 | 2018-06-26 | 东华大学 | A kind of MC nylon reinforced with carbon fiber thermoplastic composite and preparation method thereof |
| CN110483991A (en) * | 2019-08-16 | 2019-11-22 | 东莞市众一新材料科技有限公司 | A kind of halogen-free flameproof biology base nylon and preparation method thereof |
| CN111844575A (en) * | 2020-07-31 | 2020-10-30 | 淮安市建工尼龙制品有限公司 | Metal bushing integrated nylon wheel pouring method |
| CN114456584A (en) * | 2021-12-30 | 2022-05-10 | 江苏亚电新材料有限公司 | Post-treatment process of MC nylon composite material |
Citations (4)
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|---|---|---|---|---|
| US6335100B1 (en) * | 1985-05-31 | 2002-01-01 | Sumitomo Rubber Industries, Ltd. | Structural material and process for its production |
| CN1916079A (en) * | 2006-09-04 | 2007-02-21 | 余伟 | Pulp of aramid fiber enhanced molten nylon piece, and producing technique |
| CN101081927A (en) * | 2007-07-05 | 2007-12-05 | 吉林大学 | Glass micro-bead filling modified mould nylon plate and preparation method thereof |
| CN101235197A (en) * | 2007-02-01 | 2008-08-06 | 上海化工研究院天地科技发展有限公司 | Plasticizing modifying treatment method for mould nylon |
-
2012
- 2012-04-16 CN CN2012101095387A patent/CN103232595A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6335100B1 (en) * | 1985-05-31 | 2002-01-01 | Sumitomo Rubber Industries, Ltd. | Structural material and process for its production |
| CN1916079A (en) * | 2006-09-04 | 2007-02-21 | 余伟 | Pulp of aramid fiber enhanced molten nylon piece, and producing technique |
| CN101235197A (en) * | 2007-02-01 | 2008-08-06 | 上海化工研究院天地科技发展有限公司 | Plasticizing modifying treatment method for mould nylon |
| CN101081927A (en) * | 2007-07-05 | 2007-12-05 | 吉林大学 | Glass micro-bead filling modified mould nylon plate and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834163A (en) * | 2013-12-03 | 2014-06-04 | 广东科进尼龙管道制品有限公司 | Foam polyurethane-modified monomer casting (MC) nylon composite material and preparation method thereof |
| CN104695049A (en) * | 2015-03-06 | 2015-06-10 | 苏州爱立方服饰有限公司 | Fiber-reinforced fabric material and preparation method thereof |
| CN105131278A (en) * | 2015-09-21 | 2015-12-09 | 张文哲 | High-performance casting nylon and preparation method thereof |
| CN108203506A (en) * | 2018-02-01 | 2018-06-26 | 东华大学 | A kind of MC nylon reinforced with carbon fiber thermoplastic composite and preparation method thereof |
| CN110483991A (en) * | 2019-08-16 | 2019-11-22 | 东莞市众一新材料科技有限公司 | A kind of halogen-free flameproof biology base nylon and preparation method thereof |
| CN111844575A (en) * | 2020-07-31 | 2020-10-30 | 淮安市建工尼龙制品有限公司 | Metal bushing integrated nylon wheel pouring method |
| CN114456584A (en) * | 2021-12-30 | 2022-05-10 | 江苏亚电新材料有限公司 | Post-treatment process of MC nylon composite material |
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Addressee: Qiqihar North Kun Synthetic Polymer Materials Co., Ltd. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
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Application publication date: 20130807 |