CN104710780A - Ceramic whisker enhanced high-temperature-resistant nylon composite material and preparation method thereof - Google Patents
Ceramic whisker enhanced high-temperature-resistant nylon composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a ceramic whisker enhanced high-temperature-resistant nylon composite material prepared from the following components in parts by weight: 100 parts of high-temperature nylon, 1-50 parts of ceramic whiskers, 0.2-1 part of a coupling agent, 0.3-0.8 part of an antioxidant, 0.5-1.5 parts of a lubricant, and 0.3-0.8 part of a crystallization nucleation agent. A preparation method comprises the following steps: weighing 100 parts of the high-temperature nylon after drying, 0.2-1 part of the coupling agent, 0.3-0.8 part of the antioxidant, 0.5-1.5 parts of the lubricant and 0.3-0.8 part of the crystallization nucleation agent, putting into a low-speed mixer, dry-mixing, putting the mixed raw materials into a main feeding port of a twin-screw extruder, weighing 1-50 parts of the ceramic whiskers, adding from a side feeding port of the twin-screw extruder, carrying out extrusion strip traction, and granulating to obtain the ceramic whisker enhanced high-temperature-resistant nylon composite material having the characteristics of high-temperature resistance, good mechanical properties and the like.
Description
Technical field
The invention belongs to nylon technical field, particularly relate to a kind of ceramic whisker and strengthen high temperature resistant nylon composite material and preparation method thereof.
Background technology
The development of high temperature resistant nylon makes the more microminiaturized lightweight of industrial or agricultural and civilian installation and powerful change into as possibility.High temperature resistant nylon can bring higher resistance to elevated temperatures for some parts, or instead of raw material metal to produce these parts.The device of novel appts and assembly also useful high temperature resistant nylon replace the trend of metal and thermosetting material, and these all will strengthen the requirement to high-temperature-resnylont nylont material, thus drive the market requirement.
Along with high performance, the mechanical means lightweight of electronic electric equipment, there is higher requirement to the aspect such as intensity, thermotolerance, winter hardiness, dimensional stability of nylon.Therefore, some performance that must improve nylon by modification expands its range of application.Fiber has become the study hotspot of high temperature resistant nylon modification as the filler of high temperature resistant nylon modification, and commercial conventional method utilizes glass fibre to fill high temperature resistant nylon.Because the strength and modulus of glass fibre is all lower, and fragility is very large, often needs very high addition just can obtain comparatively satisfied reinforced effects.Therefore, be badly in need of a kind of fibrous mineral filler with more high strength and modulus to replace glass fibre, to obtain the high temperature resistant nylon based composites of better reinforced effects, obtained excellent performance.
Ceramic whisker is a kind of monocrystalline with very big L/D ratio, the crystallization degree of perfection high because of it and height-oriented, and the intensity of whisker and theoretical strength are very close.Such as, the tensile strength of silicon nitride crystal whisker and Young's modulus are respectively up to 50-60GPa and 550-750GPa, and tensile strength and the modulus of common glass fibre then only have 3GPa and 60-90GPa respectively.In addition, whisker also has good toughness.Ceramic whisker is used for filled polymer and prepares matrix material, not only can significantly improve the strength and modulus of material, also obviously can improve the impelling strength of matrix material, improve wear resistance.
Chinese patent CN201210075449.5 reports with potassium titanate crystal whisker reinforced nylon 6 10, obtains the matrix material that mechanical property is higher; CN201110283650.8 reports and strengthens monomer cast nylon with potassium titanate, also makes the mechanical property of matrix material obtain larger improvement, and determined by nylon matrix, and it is poor in heat-resisting.And with ceramic whisker enhancing high temperature resistant nylon composite material, not only there is higher mechanical property, lower water-intake rate, preferably dimensional stability, and have higher heat-drawn wire and good thermotolerance.At present, there is not yet the open report that ceramic whisker strengthens high temperature resistant nylon.
Summary of the invention
The object of the invention is to the defect for overcoming prior art and the ceramic whisker that provides a kind of melt-blending process to prepare strengthens high temperature resistant nylon composite material, there is the features such as high temperature resistant, good mechanical property.
Another object of the present invention is to provide the preparation method that a kind of above-mentioned ceramic whisker strengthens high temperature resistant nylon composite material; Preparation method provided by the present invention is simple, and production efficiency is high, is applicable to large-scale promotion application, has good Social and economic benef@.
For achieving the above object, the present invention adopts following technical scheme:
The invention provides a kind of ceramic whisker and strengthen high temperature resistant nylon composite material, be made up of the component comprising following weight part:
Described ceramic whisker is single-crystal ceramic whisker.
Described single-crystal ceramic whisker is selected from a kind of of silicon nitride single crystal whisker, potassium titanate monocrystalline whisker, calcium sulfate monocrystalline whisker or magnesium borate monocrystalline whisker or their mixture.
It is one or more in PA10T, PA6T, PA6T/PA66, PA9T, PA11T, PA12T, PA46, PA10T/PA6T, PA6T/PA6I, PA6T/PA6I/PA66, PA6T/PA6 or PA6T/PA610 of 280 ~ 320 DEG C that described high-temperature nylon is selected from fusing point, preferred PA10T.
Described coupling agent is N-β-aminoethyl-γ-aminopropyltrimethoxysilane or γ-(methacryloxypropyl) propyl trimethoxy silicane.
Described oxidation inhibitor is phosphite kind antioxidant, Hinered phenols antioxidant or monothioester kind antioxidant, preferred phosphite kind antioxidant.
Described phosphite kind antioxidant is three (2,4-di-tert-butyl-phenyl) phosphorous acid esters or four (2,4-di-tert-butyl-phenyl-4,4-xenyl) biphosphonate.
Described Hinered phenols antioxidant is N; N'-pair-(3-(3; 5-di-tert-butyl-hydroxy phenyl) propionyl) two [β-(3-tertiary butyl-4-hydroxy-5-the aminomethyl phenyl)-propionic ester of hexanediamine, 3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid Octadecane alcohol ester or Triethylene glycol.
Described monothioester kind antioxidant is the two dodecane ester of 3,3-thio-2 acid two tetradecane ester, thio-2 acid 2 stearyl ester or thio-2 acid.
Described lubricant is that pentaerythritol stearate, lubricant GT-11(are commercially available) or lubricant RH-313(commercially available) in one or more, preferred emollient GT-11.
Described crystallization nucleating agent is nano imvite, nano titanium oxide or P22 crystallization nucleating agent (commercially available), preferred P22 crystallization nucleating agent.
Present invention also offers the preparation method that a kind of above-mentioned ceramic whisker strengthens high temperature resistant nylon composite material, comprise the following steps:
Take dry rear high-temperature nylon 100 parts, coupling agent 0.2 ~ 1 part, 0.3 ~ 0.8 part, oxidation inhibitor, lubricant 0.5 ~ 1.5 part and crystallization nucleating agent 0.3 ~ 0.8 part, put in low speed mixer and be dry mixed, the raw material mixed is put into the main spout of twin screw extruder, and take ceramic whisker 1 ~ 50 part and add from the side spout of twin screw extruder, through extruding check rod, granulation obtains ceramic whisker and strengthens high temperature resistant nylon composite material.
After described drying, high-temperature nylon is placed in moisture eliminator drying, and drying temperature is 100 DEG C, and time of drying is 12h.
The described time be dry mixed is 10min.
The processing temperature of described twin screw extruder is 270 ~ 330 DEG C.
The present invention compared with the existing technology, has the following advantages and beneficial effect:
1, coupling agent of the present invention is N-β-aminoethyl-γ-aminopropyltrimethoxysilane and γ-(methacryloxypropyl) propyl trimethoxy silicane coupling agent treatment ceramic whisker, ceramic whisker and high-temperature nylon is made to have good bonding interface effect, the consistency good with matrix adds high strength and the thermotolerance of ceramic whisker itself, and the mechanical property of matrix material is improved.
2, the present invention is by adding the method for crystallization nucleating agent, substantially increases the degree of crystallinity of high-temperature nylon matrix, improves mechanical property and the thermotolerance of matrix material.
3, ceramic whisker provided by the invention strengthens high temperature resistant nylon composite material and has the features such as high temperature resistant, good mechanical property.
4, preparation method provided by the present invention is simple, and production efficiency is high, is applicable to large-scale promotion application, has good Social and economic benef@.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
High-temperature nylon in following examples and comparative example is all placed in moisture eliminator, and drying temperature is 100 DEG C, and time of drying is 12h, repeats no more in specific embodiment and comparative example.
The fusing point of high-temperature nylon used is below 280 ~ 320 DEG C.
Embodiment 1
(1) 100 parts of dried PA10T, 0.2 part of N-β-aminoethyl-γ-aminopropyltrimethoxysilane coupling agent, 0.55 part of three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 0.5 part of lubricant GT-11 and 0.8 part of P22 crystallization nucleating agent is taken by weight;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 10 parts of silicon nitride single crystal whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 285 DEG C, districts, three 295 DEG C, districts, four 300 DEG C, districts, five 305 DEG C, districts, six 305 DEG C, districts, seven 310 DEG C, districts, eight 310 DEG C, districts, nine 310 DEG C, districts, ten 305 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 2
(1) 100 parts of dried PA9T, 0.5 part of N-β-aminoethyl-γ-aminopropyltrimethoxysilane coupling agent, 0.3 part of three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 1.0 parts of lubricant GT-11 and 0.3 part of P22 crystallization nucleating agents are taken by weight;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 1 part of calcium sulfate monocrystalline whisker and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 285 DEG C, districts, three 295 DEG C, districts, four 300 DEG C, districts, five 305 DEG C, districts, six 305 DEG C, districts, seven 310 DEG C, districts, eight 310 DEG C, districts, nine 310 DEG C, districts, ten 305 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 3
(1) mol ratio taking 100 parts of dried PA10T/PA6T(PA10T and PA6T is by weight 45:55), 1 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.8 part four (2,4-di-tert-butyl-phenyl-4,4-xenyl) biphosphonate, 1.5 parts of lubricant GT-11 and 0.5 part of P22 crystallization nucleating agents;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 30 parts of potassium titanate monocrystalline whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 295 DEG C, districts, three 305 DEG C, districts, four 310 DEG C, districts, five 315 DEG C, districts, six 315 DEG C, districts, seven 320 DEG C, districts, eight 320 DEG C, districts, nine 320 DEG C, districts, ten 315 DEG C, districts, head temperature 310 DEG C, screw speed is 180r/min.
Embodiment 4
(1) mol ratio taking 100 parts of dried PA6T/PA610(PA6T and PA610 is by weight 65:35), 0.5 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.6 part of N, N'-pair-(3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl) hexanediamine, 1 part of lubricant GT-11 and 0.7 part of P22 crystallization nucleating agent;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 50 parts of magnesium borate monocrystalline whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 305 DEG C, screw speed is 180r/min.
Embodiment 5
(1) mixture (mass ratio 1:1) of the mixture (mass ratio 1:1) of 100 parts of dried PA46 and PA6T, 0.5 part of γ-(methacryloxypropyl) propyl trimethoxy silicane and N-β-aminoethyl-γ-aminopropyltrimethoxysilane coupling agent, 0.6 part of thio-2 acid two dodecane ester, 1 part of lubricant RH-313 and 0.7 part of nano titanium oxide crystallization nucleating agent is taken by weight;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and the mixture (mass ratio is 1:1) taking 10 parts of silicon nitride single crystal whiskers and potassium titanate monocrystalline whisker adds from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Comparative example 1
(1) 100 parts of dried PA10T, 0.2 part of N-β-aminoethyl-γ-aminopropyltrimethoxysilane coupling agent, 0.55 part of three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 0.5 part of GT-11 lubricant and 0.8 part of P22 crystallization nucleating agent is taken by weight;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder; Namely high temperature resistant nylon composite material is obtained through twin-screw extrusion check rod, granulation.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 285 DEG C, districts, three 295 DEG C, districts, four 300 DEG C, districts, five 305 DEG C, districts, six 305 DEG C, districts, seven 310 DEG C, districts, eight 310 DEG C, districts, nine 310 DEG C, districts, ten 305 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
The material properties test that embodiment 1 ~ 3 and comparative example 1 obtain the results are shown in Table 1.
Table 1
| Performance project | Testing method | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Heat-drawn wire (1.82MPa) | ASTM D648 | ℃ | 168 | 109 | 278 | 103 |
| Tensile strength | ASTM D638 | MPa | 131 | 93 | 173 | 87 |
| Flexural strength | ASTM D790 | MPa | 184 | 151 | 281 | 146 |
| Izod notched Izod impact strength | ASTM D256 | KJ/m 2 | 18.6 | 17.1 | 28.5 | 16.4 |
As can be known from Table 1, the mechanical property that the ceramic whisker enhancing high temperature resistant nylon composite material prepared by the present invention has had and better thermotolerance are a kind of matrix materials of high comprehensive performance.
Embodiment 6
(1) mass ratio taking 100 parts of dried PA6T/PA66(PA6T and PA66 is by weight 1:1), 0.3 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.4 part of 3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid Octadecane alcohol ester, 0.6 part of pentaerythritol stearate and 0.4 part of nano imvite;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 5 parts of calcium sulfate monocrystalline whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 7
(1) 100 parts of dried PA11T, 0.5 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.5 part of two [β-(3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl)-propionic ester, 0.8 part of pentaerythritol stearate and 0.4 part of nano imvite of Triethylene glycol is taken by weight;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 15 parts of silicon nitride single crystal whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 8
(1) 100 parts of dried PA12T, 0.4 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.7 part of 3,3-thio-2 acid two tetradecane ester, 0.9 part of pentaerythritol stearate and 0.6 part of nano imvite is taken by weight;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 25 parts of silicon nitride single crystal whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 9
(1) mass ratio taking 100 parts of dried PA6T/PA6I(PA6T and PA6I is by weight 1:1), 0.8 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.4 part of thio-2 acid 2 stearyl ester, 0.7 part of pentaerythritol stearate and 0.8 part of nano imvite;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 35 parts of silicon nitride single crystal whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 10
(1) mass ratio taking 100 parts of dried PA6T/PA6I/PA66(PA6T, PA6I and PA66 is by weight 1:1:1), 0.6 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.3 part of three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 1.2 parts of lubricant GT-11 and 0.6 part of P22 crystallization nucleating agents;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 45 parts of silicon nitride single crystal whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Embodiment 11
(1) mass ratio taking 100 parts of dried PA6T/PA6(PA6T and PA6 is by weight 1:1), 0.7 part of γ-(methacryloxypropyl) propyl trimethoxy silicane, 0.35 part of three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 1.4 parts of lubricant GT-11 and 0.5 part of P22 crystallization nucleating agents;
(2) the above-mentioned raw material weighed up is put in low speed mixer be dry mixed 10min;
(3) raw material mixed is put into the main spout of twin screw extruder, and take 20 parts of silicon nitride single crystal whiskers and add from the side spout of twin screw extruder; Namely obtain ceramic whisker through twin-screw extrusion check rod, granulation and strengthen high temperature resistant nylon composite material.Wherein, the temperature of twin screw extruder is: 270 DEG C, a district, two 290 DEG C, districts, three 300 DEG C, districts, four 305 DEG C, districts, five 310 DEG C, districts, six 310 DEG C, districts, seven 315 DEG C, districts, eight 315 DEG C, districts, nine 315 DEG C, districts, ten 310 DEG C, districts, head temperature 300 DEG C, screw speed is 180r/min.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. ceramic whisker strengthens a high temperature resistant nylon composite material, it is characterized in that: be made up of the component comprising following weight part:
2. ceramic whisker according to claim 1 strengthens high temperature resistant nylon composite material, it is characterized in that: described ceramic whisker is single-crystal ceramic whisker.
3. ceramic whisker according to claim 2 strengthens high temperature resistant nylon composite material, it is characterized in that: described single-crystal ceramic whisker is selected from a kind of of silicon nitride single crystal whisker, potassium titanate monocrystalline whisker, calcium sulfate monocrystalline whisker or magnesium borate monocrystalline whisker or their mixture.
4. ceramic whisker according to claim 1 strengthens high temperature resistant nylon composite material, it is characterized in that: it is one or more in PA10T, PA6T, PA6T/PA66, PA9T, PA11T, PA12T, PA46, PA10T/PA6T, PA6T/PA6I, PA6T/PA6I/PA66, PA6T/PA6 or PA6T/PA610 of 280 ~ 320 DEG C that described high-temperature nylon is selected from fusing point, preferred PA10T.
5. ceramic whisker according to claim 1 strengthens high temperature resistant nylon composite material, it is characterized in that: described coupling agent is N-β-aminoethyl-γ-aminopropyltrimethoxysilane or γ-(methacryloxypropyl) propyl trimethoxy silicane.
6. ceramic whisker according to claim 1 strengthens high temperature resistant nylon composite material, it is characterized in that: described oxidation inhibitor is phosphite kind antioxidant, Hinered phenols antioxidant or monothioester kind antioxidant, preferred phosphite kind antioxidant.
7. ceramic whisker according to claim 6 strengthens high temperature resistant nylon composite material, it is characterized in that: described phosphite kind antioxidant is three (2,4-di-tert-butyl-phenyl) phosphorous acid ester or four (2,4-di-tert-butyl-phenyl-4,4-xenyl) biphosphonate;
Or described Hinered phenols antioxidant is N, N'-pair-(3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl) two [β-(3-tertiary butyl-4-hydroxy-5-the aminomethyl phenyl)-propionic ester of hexanediamine, 3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid Octadecane alcohol ester or Triethylene glycol;
Or described monothioester kind antioxidant is the two dodecane ester of 3,3-thio-2 acid two tetradecane ester, thio-2 acid 2 stearyl ester or thio-2 acid.
8. ceramic whisker according to claim 1 strengthens high temperature resistant nylon composite material, it is characterized in that: described lubricant is one or more in pentaerythritol stearate, lubricant GT-11 or lubricant RH-313, preferred emollient GT-11;
Or described crystallization nucleating agent is nano imvite, nano titanium oxide or P22 crystallization nucleating agent, preferred P22 crystallization nucleating agent.
9. the arbitrary described ceramic whisker of claim 1 to 8 strengthens a preparation method for high temperature resistant nylon composite material, it is characterized in that: comprise the following steps:
Take dry rear high-temperature nylon 100 parts, coupling agent 0.2 ~ 1 part, 0.3 ~ 0.8 part, oxidation inhibitor, lubricant 0.5 ~ 1.5 part and crystallization nucleating agent 0.3 ~ 0.8 part, put in low speed mixer and be dry mixed, the raw material mixed is put into the main spout of twin screw extruder, and take ceramic whisker 1 ~ 50 part and add from the side spout of twin screw extruder, through extruding check rod, granulation obtains ceramic whisker and strengthens high temperature resistant nylon composite material.
10. ceramic whisker according to claim 9 strengthens the preparation method of high temperature resistant nylon composite material, it is characterized in that: after described drying, high-temperature nylon is placed in moisture eliminator drying, and drying temperature is 100 DEG C, and time of drying is 12h;
Or described in time of being dry mixed be 10min;
Or the processing temperature of described twin screw extruder is 270 ~ 330 DEG C.
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| CN107057342A (en) * | 2017-01-20 | 2017-08-18 | 金发科技股份有限公司 | A kind of Semi-aromatic polyamide resin and preparation method thereof and the polyamide moulding composition being made from it |
| WO2018133295A1 (en) * | 2017-01-20 | 2018-07-26 | 珠海万通特种工程塑料有限公司 | Semi-aromatic polyamide resin, method for preparing same, and polyamide molding composition consisting of same |
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| CN112920595A (en) * | 2021-01-26 | 2021-06-08 | 南京捷纳思新材料有限公司 | Nano potassium titanate whisker reinforced high-temperature-resistant nylon composite material and preparation method thereof |
| CN115850967A (en) * | 2022-12-16 | 2023-03-28 | 安庆会通新材料有限公司 | High-whiteness, high-heat-resistance and high-fluidity nylon composite material and preparation method thereof |
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