CN105131278A - High-performance casting nylon and preparation method thereof - Google Patents
High-performance casting nylon and preparation method thereof Download PDFInfo
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- CN105131278A CN105131278A CN201510602131.1A CN201510602131A CN105131278A CN 105131278 A CN105131278 A CN 105131278A CN 201510602131 A CN201510602131 A CN 201510602131A CN 105131278 A CN105131278 A CN 105131278A
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Abstract
The invention provides high-performance casting nylon and a preparation method thereof and relates to the field of polymer materials. The high-performance casting nylon comprises the following components in parts by weight: 0.5-0.8 part of diphenyl-methane-4,4'-diisocyanate, 0.2-0.5 part of toluene-2,4-diisocyanate, 5-8 parts of a polyisocyanate adhesive, 1-5 parts of alkali-free glass fibers, 0.5-4 parts of polyolefin thermoplastic elastomers, 1-3 parts of sodium hydroxide, 0.5-2.5 parts of a solid lubricant, 1-3 parts of a TDI (tolylene diisocyanate) curing agent, 1-2 parts of a plasticizer, 0.5-1.5 parts of a flexibilizer, 0.5-2 parts of a heat stabilizer, 1-4 parts of a glass fiber compatilizer, 3-5 parts of a silane coupling agent, 0-1 part of sodium methoxide, 0-2 part of sodium hydroxide, 1-2 parts of potassium hydroxide, 3-8 parts of carbon fibers, 0.1-3 parts of nanometer silicon nitride and 50-70 parts of caprolactam. The high-performance casting nylon is relatively good in tensile strength and impact strength. The invention further provides the preparation method of the high-performance casting nylon.
Description
Technical field
The present invention relates to polymeric material field, build nylon and preparation method thereof in particular to a kind of high-performance.
Background technology
Nylon because of its wear resistance good, the advantages such as self-lubricating property is superior, are widely used in the industries such as trolley part, electronic apparatus, petrochemical complex.Wherein MC nylon is also known as nylon monomer-cast nylon, at ambient pressure, the material of the raw material caprolactam monomer of melting alkalescence is made catalyzer, performed polymer is made together with the auxiliary agents such as activator, the mould of direct injection preheating, make material carry out polyreaction soon in a mold, condense into tough and tensile solid blank.
But still there is tensile strength and the poor shortcoming of shock strength, so that its range of application is limited by very large in existing nylon of building.
Summary of the invention
In view of this, the invention provides a kind of high-performance and build nylon and preparation method thereof, build nylon tensile strength and the poor problem of shock strength to improve existing high-performance.
For achieving the above object, the invention provides following technical scheme:
A kind of high-performance builds nylon, and count by weight, its component is composed as follows:
Ditane-4,4 '-vulcabond 0.5-0.8 part
Toluene-2,4-diisocyanate, 4-vulcabond 0.2-0.5 part
Polymeric isocyanate glue 5-8 part
Alkali free glass fibre 1-5 part
Thermoplastic Elastomer, Olefinic 0.5-4 part
Sodium hydroxide 1-3 part
Solid lubricant 0.5-2.5 part
TDI solidifying agent 1-3 part
Softening agent 1-2 part
Toughner 0.5-1.5 part
Thermo-stabilizer 0.5-2 part
Glass compatilizer 1-4 part
Silane coupling agent 3-5 part
Sodium methylate 0-1 part
Sodium hydroxide 0-2 part
Potassium hydroxide 1-2 part
Carbon fiber 3-8 part
Nano-silicon nitride 0.1-3 part
Hexanolactam 50-70 part.
Present invention also offers the preparation method that a kind of above-mentioned high-performance builds nylon, comprise the steps:
S1. hexanolactam 50-70 part, nano-silicon nitride 0.1-3 part, ditane-4 is taken by proportioning according to claim 1,4 '-vulcabond 0.5-0.8 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.2-0.5 part adds in beaker, be heated to fusing, ultrasonic 1h under the condition of 100 DEG C, insert in there-necked flask, by moisture contained in vacuum distilling system removing material at 80 DEG C;
S2. by the bed die of mould and the also preheating respectively of patrix uniform application releasing liquid, when bed die temperature is 150-180 DEG C, when patrix temperature is 180-220 DEG C, the patrix of mould is installed on bed die;
S3., after adding sodium methylate 0-1 part, sodium hydroxide 0-2 part and potassium hydroxide 1-2 part, mixing vibration 0.5h, 120 DEG C are warming up to, and the water that produces of removed under reduced pressure reaction and impurity again;
S4. mixture is dropped into molten-bath, melt temperature is 80-120 DEG C, and start vacuum pump evacuation, pressure is negative pressure 0.08-0.1MPa, and the reaction times is 30min;
S5. vacuum pump is closed, open purging valve, add carbon fiber 3-8 part, polymeric isocyanate glue 5-8 part, alkali free glass fibre 1-5 part, Thermoplastic Elastomer, Olefinic 0.5-4 part, solid lubricant 0.5-2.5 part, TDI solidifying agent 1-3 part, softening agent 1-2 part, toughner 0.5-1.5 part, thermo-stabilizer 0.5-2 part, glass compatilizer 1-4 part, silane coupling agent 3-5 part holding temperature condition be when being 100-120 DEG C, start vacuum pump evacuation 20min;
S6. the mixture that step S5 obtains is poured in preheated mould, removes after vacuum with nitrogen, shake up rear pouring into rapidly in 170 DEG C of preheated moulds, and at 170 DEG C constant temperature 30min, stripping forming after 2h,
S7. boil with deionized water the batten 4h that S6 obtains, to take out after naturally cooling the dry 8h of vacuum drying oven at 100 DEG C.
Relative to prior art, the present invention includes following beneficial effect: in the present invention, nano-silicon nitride, the interpolation of carbon fiber, improve tensile strength and the surface hardness of nylon composite materials, reduce its frictional coefficient and wear rate.And due to the certain content of carbon fiber, make the high-performance obtained build nylon can avoid carbon fiber in nylon matrix dispersing uniformity and bonding saturation ratio variation, thus it is well-bonded to lack resin between few fibers, form internal tiny crack defect, finally cause the tensile strength of nylon composite materials to reduce.And simultaneously, silane coupling agent is with the addition of again in feed composition, ensure the condition of certain tensile strength at carbon fiber under, silane coupling agent is built nylon to high-performance and has been carried out surface treatment, and the mechanical property of obtained high-performance being built to nylon creates very large impact.In addition being mixed into of Thermoplastic Elastomer, Olefinic, make final obtained high-performance build nylon and have good tensile strength and shock strength, Young's modulus, flexural strength are also higher.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
Embodiment 1
A kind of high-performance builds nylon, count by weight, its component is composed as follows: ditane-4, 4 '-vulcabond 0.5 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.2 part, polymeric isocyanate glue 5 parts, alkali free glass fibre 1 part, Thermoplastic Elastomer, Olefinic 0.5 part, 1 part, sodium hydroxide, solid lubricant 0.5 part, 1 part, TDI solidifying agent, 1 part, softening agent, toughner 0.5 part, thermo-stabilizer 0.5 part, glass compatilizer 1 part, silane coupling agent 3 parts, sodium methylate 0 part, 0 part, sodium hydroxide, 1 part, potassium hydroxide, 3 parts, carbon fiber, nano-silicon nitride 0.1 part, hexanolactam 50 parts.
Softening agent can make product snappiness strengthen, and easily processes.
Toughner refers to can increase the flexible material of sizing agent rete.
Silane coupling agent is the silicoorganic compound of a class in the molecule simultaneously containing two kinds of different chemical character groups.
The interpolation of nano-silicon nitride, carbon fiber, improves tensile strength and the surface hardness of nylon composite materials, reduces its frictional coefficient and wear rate.And due to the certain content of nano-silicon nitride, carbon fiber, make the high-performance obtained build nylon can avoid carbon fiber in nylon matrix dispersing uniformity and bonding saturation ratio variation, thus it is well-bonded to lack resin between few fibers, form internal tiny crack defect, finally cause the tensile strength of nylon composite materials to reduce.And simultaneously, silane coupling agent is with the addition of again in feed composition, ensure the condition of certain tensile strength at carbon fiber under, silane coupling agent is built nylon to high-performance and has been carried out surface treatment, and the mechanical property of obtained high-performance being built to nylon creates very large impact.In addition being mixed into of Thermoplastic Elastomer, Olefinic, make final obtained high-performance build nylon and have good tensile strength and shock strength, Young's modulus, flexural strength are also higher.
The high-performance that the present embodiment provides builds the preparation method of nylon, comprises the steps:
S1. hexanolactam 50 parts, nano-silicon nitride 0.1 part, ditane-4 is taken by proportioning according to claim 1,4 '-vulcabond 0.5 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.2 part adds in beaker, be heated to fusing, ultrasonic 1h under the condition of 100 DEG C, insert in there-necked flask, by moisture contained in vacuum distilling system removing material at 80 DEG C;
S2. by the bed die of mould and the also preheating respectively of patrix uniform application releasing liquid, when bed die temperature is 150 DEG C, when patrix temperature is 180 DEG C, the patrix of mould is installed on bed die;
S3., after adding sodium methylate 0 part, 0 part, sodium hydroxide and 1 part, potassium hydroxide, mixing vibration 0.5h, 120 DEG C are warming up to, and the water of removed under reduced pressure reaction generation again and impurity;
S4. mixture is dropped into molten-bath, melt temperature is 80 DEG C, and start vacuum pump evacuation, pressure is negative pressure 0.08MPa, and the reaction times is 30min;
S5. vacuum pump is closed, open purging valve, add 3 parts, carbon fiber, polymeric isocyanate glue 5 parts, alkali free glass fibre 1 part, Thermoplastic Elastomer, Olefinic 0.5 part, solid lubricant 0.5 part, 1 part, TDI solidifying agent, 1 part, softening agent, toughner 0.5 part, thermo-stabilizer 0.5 part, glass compatilizer 1 part, silane coupling agent 3 parts of holding temperature conditions are when being 100 DEG C, start vacuum pump evacuation 20min;
S6. the mixture that step S5 obtains is poured in preheated mould, removes after vacuum with nitrogen, shake up rear pouring into rapidly in 170 DEG C of preheated moulds, and at 170 DEG C constant temperature 30min, stripping forming after 2h,
S7. boil with deionized water the batten 4h that S6 obtains, to take out after naturally cooling the dry 8h of vacuum drying oven at 100 DEG C.
Embodiment 2
A kind of high-performance builds nylon, count by weight, its component is composed as follows: ditane-4, 4 '-vulcabond 0.8 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.5 part, polymeric isocyanate glue 8 parts, alkali free glass fibre 5 parts, Thermoplastic Elastomer, Olefinic 4 parts, 3 parts, sodium hydroxide, solid lubricant 2.5 parts, 3 parts, TDI solidifying agent, 2 parts, softening agent, toughner 1.5 parts, thermo-stabilizer 2 parts, glass compatilizer 4 parts, silane coupling agent 5 parts, sodium methylate 1 part, 2 parts, sodium hydroxide, 2 parts, potassium hydroxide, 8 parts, carbon fiber, nano-silicon nitride 3 parts, hexanolactam 70 parts.
The high-performance that the present embodiment provides builds the preparation method of nylon, comprises the steps:
S1. hexanolactam 70 parts, nano-silicon nitride 3 parts, ditane-4 is taken by proportioning according to claim 1,4 '-vulcabond 0.8 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.5 part adds in beaker, be heated to fusing, ultrasonic 1h under the condition of 100 DEG C, insert in there-necked flask, by moisture contained in vacuum distilling system removing material at 80 DEG C;
S2. by the bed die of mould and the also preheating respectively of patrix uniform application releasing liquid, when bed die temperature is 180 DEG C, when patrix temperature is 220 DEG C, the patrix of mould is installed on bed die;
S3., after adding sodium methylate 1 part, 2 parts, sodium hydroxide and 2 parts, potassium hydroxide, mixing vibration 0.5h, 120 DEG C are warming up to, and the water of removed under reduced pressure reaction generation again and impurity;
S4. mixture is dropped into molten-bath, melt temperature is 120 DEG C, and start vacuum pump evacuation, pressure is negative pressure 0.1MPa, and the reaction times is 30min;
S5. vacuum pump is closed, open purging valve, add 8 parts, carbon fiber, polymeric isocyanate glue 8 parts, alkali free glass fibre 5 parts, Thermoplastic Elastomer, Olefinic 4 parts, solid lubricant 2.5 parts, 3 parts, TDI solidifying agent, 2 parts, softening agent, toughner 1.5 parts, thermo-stabilizer 2 parts, glass compatilizer 4 parts, silane coupling agent 5 parts of holding temperature conditions are when being 120 DEG C, start vacuum pump evacuation 20min;
S6. the mixture that step S5 obtains is poured in preheated mould, removes after vacuum with nitrogen, shake up rear pouring into rapidly in 170 DEG C of preheated moulds, and at 170 DEG C constant temperature 30min, stripping forming after 2h,
S7. boil with deionized water the batten 4h that S6 obtains, to take out after naturally cooling the dry 8h of vacuum drying oven at 100 DEG C.
Embodiment 3
A kind of high-performance builds nylon, count by weight, its component is composed as follows: ditane-4, 4 '-vulcabond 0.6 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.4 part, polymeric isocyanate glue 6 parts, alkali free glass fibre 5 parts, Thermoplastic Elastomer, Olefinic 3 parts, 2 parts, sodium hydroxide, solid lubricant 1.5 parts, 2 parts, TDI solidifying agent, 1 part, softening agent, toughner 0.5 part, thermo-stabilizer 0.5 part, glass compatilizer 3 parts, silane coupling agent 3.5 parts, sodium methylate 0.5 part, 0.5 part, sodium hydroxide, 1.5 parts, potassium hydroxide, 4 parts, carbon fiber, nano-silicon nitride 1 part, hexanolactam 60 parts.
The high-performance that the present embodiment provides builds the preparation method of nylon, comprises the steps:
S1. hexanolactam 60 parts, nano-silicon nitride 1 part, ditane-4 is taken by proportioning according to claim 1,4 '-vulcabond 0.6 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.4 part adds in beaker, be heated to fusing, ultrasonic 1h under the condition of 100 DEG C, insert in there-necked flask, by moisture contained in vacuum distilling system removing material at 80 DEG C;
S2. by the bed die of mould and the also preheating respectively of patrix uniform application releasing liquid, when bed die temperature is 160 DEG C, when patrix temperature is 190 DEG C, the patrix of mould is installed on bed die;
S3., after adding sodium methylate 0.5 part, 0.5 part, sodium hydroxide and 1.5 parts, potassium hydroxide, mixing vibration 0.5h, 120 DEG C are warming up to, and the water of removed under reduced pressure reaction generation again and impurity;
S4. mixture is dropped into molten-bath, melt temperature is 120 DEG C, and start vacuum pump evacuation, pressure is negative pressure 0.08MPa, and the reaction times is 30min;
S5. vacuum pump is closed, open purging valve, add 4 parts, carbon fiber, polymeric isocyanate glue 6 parts, alkali free glass fibre 5 parts, Thermoplastic Elastomer, Olefinic 3 parts, solid lubricant 1.5 parts, 2 parts, TDI solidifying agent, 1 part, softening agent, toughner 1 part, thermo-stabilizer 0.5 part, glass compatilizer 3 parts, silane coupling agent 3.5 parts of holding temperature conditions are when being 100-120 DEG C, start vacuum pump evacuation 20min;
S6. the mixture that step S5 obtains is poured in preheated mould, removes after vacuum with nitrogen, shake up rear pouring into rapidly in 170 DEG C of preheated moulds, and at 170 DEG C constant temperature 30min, stripping forming after 2h,
S7. boil with deionized water the batten 4h that S6 obtains, to take out after naturally cooling the dry 8h of vacuum drying oven at 100 DEG C.
The high-performance of above-described embodiment 1-3 builds the performance test results of nylon in table 1.
Table 1 embodiment 1-3 high-performance builds the performance test results of nylon
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Flame retardant properties | FV-0 | FV-0 | FV-0 |
| Yield strength, Mpa | 194 | 175 | 186 |
| Flexural strength, Mpa | 231 | 247 | 239 |
| Notched Izod impact strength, KJ/ ㎡ | 20 | 16 | 16 |
| Abrasion loss, mg | 31 | 25 | 27 |
| Shock strength, KJ/ ㎡ | 79 | 64 | 77 |
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. high-performance builds a nylon, it is characterized in that: count by weight, and its component is composed as follows:
Ditane-4,4 '-vulcabond 0.5-0.8 part
Toluene-2,4-diisocyanate, 4-vulcabond 0.2-0.5 part
Polymeric isocyanate glue 5-8 part
Alkali free glass fibre 1-5 part
Thermoplastic Elastomer, Olefinic 0.5-4 part
Sodium hydroxide 1-3 part
Solid lubricant 0.5-2.5 part
TDI solidifying agent 1-3 part
Softening agent 1-2 part
Toughner 0.5-1.5 part
Thermo-stabilizer 0.5-2 part
Glass compatilizer 1-4 part
Silane coupling agent 3-5 part
Sodium methylate 0-1 part
Sodium hydroxide 0-2 part
Potassium hydroxide 1-2 part
Carbon fiber 3-8 part
Nano-silicon nitride 0.1-3 part
Hexanolactam 50-70 part.
2. high-performance as claimed in claim 1 builds a preparation method for nylon, it is characterized in that, comprises the steps:
S1. hexanolactam 50-70 part, nano-silicon nitride 0.1-3 part, ditane-4 is taken by proportioning according to claim 1,4 '-vulcabond 0.5-0.8 part, Toluene-2,4-diisocyanate, 4-vulcabond 0.2-0.5 part adds in beaker, be heated to fusing, ultrasonic 1h under the condition of 100 DEG C, insert in there-necked flask, by moisture contained in vacuum distilling system removing material at 80 DEG C;
S2. by the bed die of mould and the also preheating respectively of patrix uniform application releasing liquid, when bed die temperature is 150-180 DEG C, when patrix temperature is 180-220 DEG C, the patrix of mould is installed on bed die;
S3., after adding sodium methylate 0-1 part, sodium hydroxide 0-2 part and potassium hydroxide 1-2 part, mixing vibration 0.5h, 120 DEG C are warming up to, and the water that produces of removed under reduced pressure reaction and impurity again;
S4. mixture is dropped into molten-bath, melt temperature is 80-120 DEG C, and start vacuum pump evacuation, pressure is negative pressure 0.08-0.1MPa, and the reaction times is 30min;
S5. vacuum pump is closed, open purging valve, add carbon fiber 3-8 part, polymeric isocyanate glue 5-8 part, alkali free glass fibre 1-5 part, Thermoplastic Elastomer, Olefinic 0.5-4 part, solid lubricant 0.5-2.5 part, TDI solidifying agent 1-3 part, softening agent 1-2 part, toughner 0.5-1.5 part, thermo-stabilizer 0.5-2 part, glass compatilizer 1-4 part, silane coupling agent 3-5 part holding temperature condition be when being 100-120 DEG C, start vacuum pump evacuation 20min;
S6. the mixture that step S5 obtains is poured in preheated mould, removes after vacuum with nitrogen, shake up rear pouring into rapidly in 170 DEG C of preheated moulds, and at 170 DEG C constant temperature 30min, stripping forming after 2h,
S7. boil with deionized water the batten 4h that S6 obtains, to take out after naturally cooling the dry 8h of vacuum drying oven at 100 DEG C.
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| CN201510602131.1A CN105131278A (en) | 2015-09-21 | 2015-09-21 | High-performance casting nylon and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109957236A (en) * | 2019-04-03 | 2019-07-02 | 河南城建学院 | Activeness and quietness wearable lightweight cast nylon composite material and preparation method |
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| CN101077927A (en) * | 2007-07-05 | 2007-11-28 | 吉林大学 | Mould nylon filled of grammite powder and preparation method thereof |
| 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 |
| CN103232595A (en) * | 2012-04-16 | 2013-08-07 | 齐齐哈尔北坤合成高分子材料有限公司 | Modified MC nylon |
| CN104650345A (en) * | 2013-11-19 | 2015-05-27 | 徐崇娣 | MC nylon engineering plastics and production process thereof |
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2015
- 2015-09-21 CN CN201510602131.1A patent/CN105131278A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077927A (en) * | 2007-07-05 | 2007-11-28 | 吉林大学 | Mould nylon filled of grammite powder and preparation method thereof |
| CN103232595A (en) * | 2012-04-16 | 2013-08-07 | 齐齐哈尔北坤合成高分子材料有限公司 | Modified MC nylon |
| 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 |
| CN104650345A (en) * | 2013-11-19 | 2015-05-27 | 徐崇娣 | MC nylon engineering plastics and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109957236A (en) * | 2019-04-03 | 2019-07-02 | 河南城建学院 | Activeness and quietness wearable lightweight cast nylon composite material and preparation method |
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Application publication date: 20151209 |