CN105017765A - Basic magnesium sulfate whisker/PA610T composite material and preparation method thereof - Google Patents
Basic magnesium sulfate whisker/PA610T composite material and preparation method thereof Download PDFInfo
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- CN105017765A CN105017765A CN201410177983.6A CN201410177983A CN105017765A CN 105017765 A CN105017765 A CN 105017765A CN 201410177983 A CN201410177983 A CN 201410177983A CN 105017765 A CN105017765 A CN 105017765A
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Abstract
The invention discloses a basic magnesium sulfate whisker/PA610T composite material. The basic magnesium sulfate whisker/PA610T composite material is composed of, by weight, 50-65 parts of polyhexamethylene terephthalamide, 25-40 parts of basic magnesium sulfate whisker, 2-4 parts of compatilizer, 2-4 parts of lubricant and 2-6 parts of antioxygen. The invention further discloses a preparation method of the basic magnesium sulfate whisker/PA610T composite material. The preparation method comprises the steps that the 50-65 parts of dried polyhexamethylene terephthalamide, the 2-4 parts of compatilizer, the 2-6 parts of antioxygen, the 2-4 parts of lubricant and the 25-40 parts of basic magnesium sulfate whisker are mixed evenly; the mixture is added to a hopper of a twin-screw extruder, the extruder is started, extruding prilling, drying and injection molding are carried out through the twin-screw extruder, and the basic magnesium sulfate whisker/PA610T composite material is obtained. The basic magnesium sulfate whisker/PA610T composite material prepared through the method is simple in preparation process and suitable for industrial production.
Description
Technical field
The invention belongs to technical field of polymer composite materials, particularly relate to a kind of alkali magnesium sulfate crystal whisker/PA610T matrix material and preparation method thereof.
Background technology
The output of nylon resin ranks first in five large-engineering plastics, accounts for 1/3rd of engineering plastics ultimate production.But the defects such as poor, under dry state and low temperature the impact property of strong alkali-acid resistance is poor, Young's modulus is little, easy burning that NYLON610 T also exists, dimensional stability and the electrical property of goods is particularly affected because water-absorbent is higher, the insulating requirements under high humidity and condition of high voltage and water tolerance can not be met, which greatly limits its range of application.
At present, for above-mentioned many disadvantages, major part scholar concentrates on and adopts boron fibre, glass fibre, carbon fiber, mineral filler (as mica, calcium carbonate, talcum powder, polynite etc.), nanoparticle etc. to carry out modification to nylon, expand its range of application to improve performance, but have no report with alkali magnesium sulfate crystal whisker modification nylon 610 T.
Alkali magnesium sulfate crystal whisker diameter is little, length-to-diameter ratio is large, size system submicron order or nano level, there is the atomic arrangement structure of high-sequential, there is no the defect of macrocrystal in usual object, thus can close to the theoretical strength of valence link between material atom, particularly good dispersity in resin, easily and plastics compound, little to the damage of molding device and mould, so available alkali magnesium sulfate crystal whisker carries out filling-modified to macromolecular material.
Summary of the invention
Technical problem to be solved by this invention is the above-mentioned defect overcoming existing pure PA610T performance existence to a certain extent, put forth effort to improve the consistency of alkali magnesium sulfate crystal whisker and NYLON610 T resin simultaneously and improve the dispersiveness of alkali magnesium sulfate crystal whisker in resin matrix, the object of this invention is to provide a kind of alkali magnesium sulfate crystal whisker/PA610T matrix material.
Another object of the present invention is to provide a kind of preparation method of above-mentioned alkali magnesium sulfate crystal whisker/PA610T matrix material.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions:
The invention provides a kind of alkali magnesium sulfate crystal whisker/PA610T matrix material, be made up of the component comprising following weight part:
The molecular weight of described poly-paraphenylene terephthalamide's hexamethylene sebacamide (PA610T) is 3 ~ 50,000, and fusing point is 300 ~ 310 DEG C.
The diameter D < 1.0 μm of described alkali magnesium sulfate crystal whisker, average length L is 10 ~ 60 μm, length-to-diameter ratio L/D > 30, and proportion is 2.3g/cm
3, high proportion is the pH value of 0.1 ~ 0.3, water content < 1.0%, 2% over dry water dispersion is 9 ~ 9.5, fluorescent whiteness>=93.
Described compatilizer is selected from maleic anhydride grafted polymer resin, the grafted maleic anhydride polymers such as preferred PP, PE, ABS, POE.
Described lubricant is ethylene acrylic acid co polymer (A-C540A).
Described oxidation inhibitor is Hinered phenols antioxidant and phosphite ester kind antioxidant is composite forms; preferred N; N'-pair-(3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl) hexanediamine (oxidation inhibitor 1098) and three [2.4-di-tert-butyl-phenyl] phosphorous acid ester (irgasfos 168s) are according to (0.5 ~ 1): the mass ratio of 1 is composite.
The invention provides a kind of preparation method of above-mentioned alkali magnesium sulfate crystal whisker/PA610T matrix material, comprise the following steps:
By 50 ~ 65 parts of dry poly-paraphenylene terephthalamide's hexamethylene sebacamide, 2 ~ 4 parts of compatilizers, 2 ~ 6 parts of oxidation inhibitor, 2 ~ 4 parts of lubricants, 25 ~ 40 parts of alkali magnesium sulfate crystal whiskers mix; Join in twin screw extruder hopper, start forcing machine, through twin screw extruder extruding pelletization, drying, injection moulding, obtain alkali magnesium sulfate crystal whisker/PA610T matrix material.
Poly-paraphenylene terephthalamide's hexamethylene sebacamide of described drying is drying more than 10 hours in 90 ~ 120 DEG C of vacuum drying ovens, and vacuum tightness is 0.088 ~ 0.100MPa.
Described alkali magnesium sulfate crystal whisker is through silane coupling agent surface treatment, comprise the following steps: Silane coupling agent KH550 is dissolved in the mixed solvent that 9 parts of ethanol and l part distilled water is made into massfraction 5%, the mass percent that silane coupling agent accounts for alkali magnesium sulfate crystal whisker is 3%, drip acetic acid regulator solution pH value to 4.0, prehydrolysis l h; Alkali magnesium sulfate crystal whisker dries 4h at 140 DEG C, then puts into high-speed mixer and stirs, and with dropper, the silane coupler solution of prehydrolysis is injected high-speed mixer from top, with alkali magnesium sulfate crystal whisker mixing 10min simultaneously; Alkali magnesium sulfate crystal whisker after process is dried through 24h at 120 DEG C.
The screw slenderness ratio of described twin screw extruder is (30 ~ 50): 1, expressing technique: 1st district to head temperature scope is: 295 ~ 335 DEG C, and rotating speed is 200 ~ 300r/min, feed screw rotating speed: 10 ~ 20r/min.
Described drying is drying more than 10 hours in 80 ~ 100 DEG C of vacuum drying ovens, and vacuum tightness is 0.088 ~ 0.100MPa.
The Shooting Technique of described injection moulding: injection temperature scope is 310 ~ 340 DEG C, injection moulding speed is 10 ~ 15g/s, and injection pressure is 60 ~ 90MPa, and cooling time is 20 ~ 30s; Place more than 24 hours under fixed temperature and humidity condition.
The present invention compared with the existing technology, has the following advantages:
Preparation technology of the present invention is simple, and the equipment cost of reacting used is cheap, and energy consumption is also less, alkali magnesium sulfate crystal whisker favorable dispersity and desirable with resin compatible in nylon resin, and the matrix material comprehensive mechanical property obtained significantly promotes; Heat-drawn wire increases substantially and water-intake rate is lower, good stability of the dimension.
Alkali magnesium sulfate crystal whisker/PA610T matrix material prepared by method of the present invention, alkali magnesium sulfate crystal whisker is uniformly dispersed in PA610T matrix, the interface binding power of alkali magnesium sulfate crystal whisker and PA610T body material is strong, the mechanical property such as to stretch, bending and thermal characteristics be improved significantly, dimension stability is better, thermal distortion increases substantially, water-intake rate also obviously reduces, simultaneously, alkali magnesium sulfate crystal whisker/PA610T matrix material prepared by the method, preparation technology is simple, is applicable to suitability for industrialized production.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Below in an example, following detection method is adopted:
Tensile property is pressed ASTM D638-10 and is tested, and rate of extension 5mm/min tests under fixed temperature and humidity experiment condition.
Simply supported beam notched Izod impact strength is pressed ASTM D6110-10 and is tested.
Flexural strength is pressed ASTM D790-10 and is tested, and presses down speed 1.25mm/min, tests under fixed temperature and humidity experiment condition.
Heat-drawn wire is pressed ASTM D648-07 and is tested.
Water-absorbent is tested: under room temperature, be placed on by sample in moisture eliminator, places the beaker that fills the saturated common salt aqueous solution bottom moisture eliminator, and maintaining relative humidity in moisture eliminator is 75%, often crosses 24h taking-up sample and weighs, be designated as G
i, (i=1,2,3,4 ...), the sample after weighing still is put back in moisture eliminator.After 20 days, sample is put into drying in oven (70 DEG C, 24h), be then placed in moisture eliminator and be cooled to room temperature weighing sample, be designated as G
0.Calculate the water content W in sample as follows
i%, the water-intake rate wherein in the present invention unanimously calculates the water-intake rate of (120h) after 5 days:
Wi＝(G
i-G
0)/G
i×100％。
The diameter D < 1.0 μm of alkali magnesium sulfate crystal whisker used below, average length L is 10 ~ 60 μm, length-to-diameter ratio L/D > 30, and proportion is 2.3g/cm
3, high proportion is the pH value of 0.1 ~ 0.3, water content < 1.0%, 2% over dry water dispersion is 9 ~ 9.5, fluorescent whiteness>=93.
Silane coupling agent used is below Silane coupling agent KH550, is selected from NanJing Shuguang Chemical Group Co., Ltd..
Embodiment 1
A kind of alkali magnesium sulfate crystal whisker/PA610T matrix material, make by comprising forming of following weight part: (molecular weight is 30,000 to NYLON610 T, fusing point 300 DEG C): 50 parts, alkali magnesium sulfate crystal whisker: 40 parts, Compatibilizer PP-g-MAH: 2 parts, lubricant (ethylene acrylic acid co polymer A-C540A): 2 parts, oxidation inhibitor (oxidation inhibitor 1098: irgasfos 168 is composite=0.5:1): 6 parts, processing gross weight is 2.5kg.
Alkali magnesium sulfate crystal whisker is through silane coupling agent surface treatment, comprise the following steps: Silane coupling agent KH550 is dissolved in the mixed solvent that 9 parts of ethanol and l part distilled water is made into massfraction 5%, the mass percent that silane coupling agent accounts for alkali magnesium sulfate crystal whisker is 3%, drip acetic acid regulator solution pH value to 4.0, prehydrolysis l h; Alkali magnesium sulfate crystal whisker dries 4h at 140 DEG C, then puts into high-speed mixer and stirs, and with dropper, the silane coupler solution of prehydrolysis is injected high-speed mixer from top, with alkali magnesium sulfate crystal whisker mixing 10min simultaneously; Alkali magnesium sulfate crystal whisker after process is dried through 24h at 120 DEG C.
(1) by NYLON610 T in 90 DEG C, vacuum tightness be in the vacuum drying oven vacuum drying oven of 0.088MPa dry 15 hours fully to remove wherein moisture;
(2) pour the components such as NYLON610 T, oxidation inhibitor, lubricant, surface-treated alkali magnesium sulfate crystal whisker into high mixer fully to mix;
(3) forcing machine is started, through twin screw extruder extruding pelletization, extruder screw length-to-diameter ratio is 30:1, extrusion temperature is respectively 295 DEG C, 300 DEG C, 305 DEG C, 310 DEG C, 315 DEG C, 320 DEG C, 325 DEG C from 1st district to head, rotating speed is 200r/min, feed screw rotating speed: 10r/min, obtains alkali magnesium sulfate crystal whisker/NYLON610 T matrix material;
(4) by alkali magnesium sulfate crystal whisker/NYLON610 T matrix material pellet in 80 DEG C, vacuum tightness is in 0.1MPa baking oven after dry 18 hours, obtains alkali magnesium sulfate crystal whisker/NYLON610 T matrix material for subsequent use.
By alkali magnesium sulfate crystal whisker/NYLON610 T matrix material injection moulding on injection moulding machine, injection temperature interval is 310 DEG C, 320 DEG C, 315 DEG C, injection speed is 10g/s, injection pressure is 60MPa, cooling time is 20s, obtain the batten for correlated performance test, place more than 24 hours under fixed temperature and humidity condition, detailed performance is in table 1.
Embodiment 2
A kind of alkali magnesium sulfate crystal whisker/NYLON610 T matrix material, make by comprising forming of following weight part: (molecular weight is 40,000 to NYLON610 T, fusing point 305 DEG C): 60 parts, alkali magnesium sulfate crystal whisker: 30 parts, compatilizer PE-g-MAH:3 part, lubricant (ethylene acrylic acid co polymer A-C540A): 3 parts, oxidation inhibitor (oxidation inhibitor 1098: irgasfos 168 is composite=0.7:1): 4 parts, processing gross weight is 2.5kg.
Alkali magnesium sulfate crystal whisker is through silane coupling agent surface treatment, comprise the following steps: Silane coupling agent KH550 is dissolved in the mixed solvent that 9 parts of ethanol and l part distilled water is made into massfraction 5%, the mass percent that silane coupling agent accounts for alkali magnesium sulfate crystal whisker is 3%, drip acetic acid regulator solution pH value to 4.0, prehydrolysis l h; Alkali magnesium sulfate crystal whisker dries 4h at 140 DEG C, then puts into high-speed mixer and stirs, and with dropper, the silane coupler solution of prehydrolysis is injected high-speed mixer from top, with alkali magnesium sulfate crystal whisker mixing 10min simultaneously; Alkali magnesium sulfate crystal whisker after process is dried through 24h at 120 DEG C.
(1) by NYLON610 T in 105 DEG C, vacuum tightness be in the vacuum drying oven vacuum drying oven of 0.1MPa dry 14 hours fully to remove wherein moisture;
(2) pour the components such as NYLON610 T, oxidation inhibitor, lubricant, surface-treated alkali magnesium sulfate crystal whisker into high mixer fully to mix;
(3) forcing machine is started, through twin screw extruder extruding pelletization, extruder screw length-to-diameter ratio is 40:1, extrusion temperature is respectively 300 DEG C, 305 DEG C, 310 DEG C, 315 DEG C, 320 DEG C, 325 DEG C, 330 DEG C from 1st district to head, rotating speed is 250r/min, feed screw rotating speed: 15r/min, obtains alkali magnesium sulfate crystal whisker/NYLON610 T matrix material;
(4) by alkali magnesium sulfate crystal whisker/NYLON610 T matrix material pellet in 90 DEG C, vacuum tightness is in 0.09MPa baking oven after dry 15 hours, obtains alkali magnesium sulfate crystal whisker/NYLON610 T matrix material for subsequent use.
By alkali magnesium sulfate crystal whisker/NYLON610 T matrix material injection moulding on injection moulding machine, injection temperature interval is 325 DEG C, 335 DEG C, 330 DEG C, injection speed is 12g/s, injection pressure is 75MPa, cooling time is 25s, obtain the batten for correlated performance test, place more than 24 hours under fixed temperature and humidity condition, detailed performance is in table 1.
Embodiment 3
A kind of alkali magnesium sulfate crystal whisker/NYLON610 T matrix material, make by comprising forming of following weight part: (molecular weight is 50,000 to NYLON610 T, fusing point 310 DEG C): 65 parts, alkali magnesium sulfate crystal whisker: 25 parts, compatilizer POE-g-MAH:4 part, lubricant (ethylene acrylic acid co polymer A-C540A): 4 parts, oxidation inhibitor (oxidation inhibitor 1098: irgasfos 168 is composite=1:1): 2 parts, processing gross weight is 2.5kg.
Alkali magnesium sulfate crystal whisker is through silane coupling agent surface treatment, comprise the following steps: Silane coupling agent KH550 is dissolved in the mixed solvent that 9 parts of ethanol and l part distilled water is made into massfraction 5%, the mass percent that silane coupling agent accounts for alkali magnesium sulfate crystal whisker is 3%, drip acetic acid regulator solution pH value to 4.0, prehydrolysis l h; Alkali magnesium sulfate crystal whisker dries 4h at 140 DEG C, then puts into high-speed mixer and stirs, and with dropper, the silane coupler solution of prehydrolysis is injected high-speed mixer from top, with alkali magnesium sulfate crystal whisker mixing 10min simultaneously; Alkali magnesium sulfate crystal whisker after process is dried through 24h at 120 DEG C.
(1) by NYLON610 T in 120 DEG C, vacuum tightness be in the vacuum drying oven vacuum drying oven of 0.09MPa dry 12 hours fully to remove wherein moisture;
(2) pour the components such as NYLON610 T, oxidation inhibitor, lubricant, surface-treated alkali magnesium sulfate crystal whisker into high mixer fully to mix;
(3) forcing machine is started, through twin screw extruder extruding pelletization, extruder screw length-to-diameter ratio is 50:1, extrusion temperature is respectively 305 DEG C, 310 DEG C, 315 DEG C, 320 DEG C, 325 DEG C, 330 DEG C, 335 DEG C from 1st district to head, rotating speed is 300r/min, feed screw rotating speed: 20r/min, obtains alkali magnesium sulfate crystal whisker/NYLON610 T matrix material;
(4) by alkali magnesium sulfate crystal whisker/NYLON610 T matrix material pellet in 100 DEG C, vacuum tightness is in 0.088MPa baking oven after dry 12 hours, obtains alkali magnesium sulfate crystal whisker/NYLON610 T matrix material for subsequent use.
By alkali magnesium sulfate crystal whisker/NYLON610 T matrix material injection moulding on injection moulding machine, injection temperature interval is 330 DEG C, 340 DEG C, 335 DEG C, injection speed is 15g/s, injection pressure is 90MPa, cooling time is 30s, obtain the batten for correlated performance test, place more than 24 hours under fixed temperature and humidity condition, detailed performance is in table 1.
Comparative example 1
By pure NYLON610 T pellet in 100 DEG C, vacuum tightness is injection moulding on injection moulding machine after dry 15 hours in 0.10MPa baking oven, injection temperature interval is 310 DEG C, 320 DEG C, 315 DEG C, injection speed is 15g/s, injection pressure is 80MPa, and cooling time is 30s, obtains the batten for correlated performance test, and compare with embodiment 1-3, detailed performance is in table 1.
Comparative example 2
By pure NYLON610 T pellet in 100 DEG C, vacuum tightness is in 0.10MPa baking oven dry 15 hours, adds the alkali magnesium sulfate crystal whisker of the long time without surface modification of NYLON610 T weight 30%, the two mix after on forcing machine extruding pelletization, then injection moulding is carried out, injection temperature interval is 310 DEG C, 320 DEG C, 315 DEG C, and injection speed is 15g/s, and injection pressure is 85MPa, cooling time is 25s, obtain the batten for correlated performance test, and compare with embodiment 2, detailed performance is in table 1.Through experimental test, the performance test results of material is as table 1:
Table 1
Compare as can be seen from the product test of the embodiment shown in table 1 with comparative example 1, after surface treated alkali magnesium sulfate crystal whisker adds, product tensile strength, shock strength, flexural strength, heat-drawn wire etc. all lifting to a certain extent, illustrate that alkali magnesium sulfate crystal whisker serves good reinforced effects; As can be seen from embodiment 2 and comparative example 2, modification and unmodified alkali magnesium sulfate crystal whisker differ larger to the reinforced effects of product, demonstrate to a certain extent and have better consistency through the alkali magnesium sulfate crystal whisker of silane coupling agent process and resin matrix, play better reinforced effects; It can also be seen that from data, alkali magnesium sulfate crystal whisker Reinforced Nylon material water-intake rate obviously reduces, and water resistance is significantly promoted, and is conducive to keeping good dimensional stability in environment uses.
The above-mentioned description to embodiment can understand and apply the invention for ease of those skilled in the art.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. alkali magnesium sulfate crystal whisker/PA610T matrix material, is characterized in that: be made up of the component comprising following weight part:
2. alkali magnesium sulfate crystal whisker according to claim 1/PA610T matrix material, is characterized in that: the molecular weight of described poly-paraphenylene terephthalamide's hexamethylene sebacamide is 3 ~ 50,000, and fusing point is 300 ~ 310 DEG C.
3. alkali magnesium sulfate crystal whisker according to claim 1/PA610T matrix material, it is characterized in that: the diameter D < 1.0 μm of described alkali magnesium sulfate crystal whisker, average length L is 10 ~ 60 μm, length-to-diameter ratio L/D > 30, and proportion is 2.3g/cm
3, high proportion is the pH value of 0.1 ~ 0.3, water content < 1.0%, 2% over dry water dispersion is 9 ~ 9.5, fluorescent whiteness>=93.
4. alkali magnesium sulfate crystal whisker according to claim 1/PA610T matrix material, is characterized in that: described compatilizer is selected from maleic anhydride grafted polymer resin, the grafted maleic anhydride polymers such as preferred PP, PE, ABS, POE.
5. alkali magnesium sulfate crystal whisker according to claim 1/PA610T matrix material, is characterized in that: described lubricant is ethylene acrylic acid co polymer.
6. alkali magnesium sulfate crystal whisker according to claim 1/PA610T matrix material; it is characterized in that: described oxidation inhibitor is Hinered phenols antioxidant and phosphite ester kind antioxidant is composite forms; preferred N; N'-pair-(3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl) hexanediamine and three [2.4-di-tert-butyl-phenyl] phosphorous acid ester is according to (0.5 ~ 1): the mass ratio of 1 is composite.
7. a preparation method for the arbitrary described alkali magnesium sulfate crystal whisker/PA610T matrix material of claim 1 to 6, is characterized in that: comprise the following steps:
By 50 ~ 65 parts of dry poly-paraphenylene terephthalamide's hexamethylene sebacamide, 2 ~ 4 parts of compatilizers, 2 ~ 6 parts of oxidation inhibitor, 2 ~ 4 parts of lubricants, 25 ~ 40 parts of alkali magnesium sulfate crystal whiskers mix; Join in twin screw extruder hopper, start forcing machine, through twin screw extruder extruding pelletization, drying, injection moulding, obtain alkali magnesium sulfate crystal whisker/PA610T matrix material.
8. the preparation method of alkali magnesium sulfate crystal whisker according to claim 7/PA610T matrix material, it is characterized in that: poly-paraphenylene terephthalamide's hexamethylene sebacamide of described drying is drying more than 10 hours in 90 ~ 120 DEG C of vacuum drying ovens, and vacuum tightness is 0.088 ~ 0.100MPa.
9. the preparation method of alkali magnesium sulfate crystal whisker according to claim 7/PA610T matrix material, it is characterized in that: described alkali magnesium sulfate crystal whisker is through silane coupling agent surface treatment, comprise the following steps: Silane coupling agent KH550 is dissolved in the mixed solvent that 9 parts of ethanol and l part distilled water is made into massfraction 5%, the mass percent that silane coupling agent accounts for alkali magnesium sulfate crystal whisker is 3%, drip acetic acid regulator solution pH value to 4.0, prehydrolysis l h; Alkali magnesium sulfate crystal whisker dries 4h at 140 DEG C, then puts into high-speed mixer and stirs, and with dropper, the silane coupler solution of prehydrolysis is injected high-speed mixer from top, with alkali magnesium sulfate crystal whisker mixing 10min simultaneously; Alkali magnesium sulfate crystal whisker after process is dried through 24h at 120 DEG C.
10. the preparation method of alkali magnesium sulfate crystal whisker according to claim 7/PA610T matrix material, it is characterized in that: the screw slenderness ratio of described twin screw extruder is (30 ~ 50): 1, expressing technique: 1st district to head temperature scope is: 295 ~ 335 DEG C, rotating speed is 200 ~ 300r/min, feed screw rotating speed: 10 ~ 20r/min;
Or described drying is drying more than 10 hours in 80 ~ 100 DEG C of vacuum drying ovens, vacuum tightness is 0.088 ~ 0.100MPa;
Or the Shooting Technique of described injection moulding: injection temperature scope is 310 ~ 340 DEG C, and injection moulding speed is 10 ~ 15g/s, and injection pressure is 60 ~ 90MPa, and cooling time is 20 ~ 30s; Place more than 24 hours under fixed temperature and humidity condition.
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| CN106928701A (en) * | 2015-12-29 | 2017-07-07 | 上海杰事杰新材料(集团)股份有限公司 | A kind of high temperature resistant nylon base X-ray shield composite and preparation method thereof |
| CN108276608A (en) * | 2018-02-28 | 2018-07-13 | 湘潭大学 | A kind of method of modifying of alkali magnesium sulfate crystal whisker |
| CN110330611A (en) * | 2018-10-11 | 2019-10-15 | 中国林业科学研究院林产化学工业研究所 | Silanization silicon whisker system and its preparation method and application |
| CN111051244A (en) * | 2018-07-26 | 2020-04-21 | 宇部材料工业株式会社 | Basic magnesium sulfate powder, method for producing basic magnesium sulfate powder, resin composition containing basic magnesium sulfate powder, master batch pellet, and molded body |
| CN114854195A (en) * | 2022-06-27 | 2022-08-05 | 河北金天塑胶新材料有限公司 | Antibacterial reinforced PA plastic special for baby carriage and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106928701A (en) * | 2015-12-29 | 2017-07-07 | 上海杰事杰新材料(集团)股份有限公司 | A kind of high temperature resistant nylon base X-ray shield composite and preparation method thereof |
| CN108276608A (en) * | 2018-02-28 | 2018-07-13 | 湘潭大学 | A kind of method of modifying of alkali magnesium sulfate crystal whisker |
| CN111051244A (en) * | 2018-07-26 | 2020-04-21 | 宇部材料工业株式会社 | Basic magnesium sulfate powder, method for producing basic magnesium sulfate powder, resin composition containing basic magnesium sulfate powder, master batch pellet, and molded body |
| CN111051244B (en) * | 2018-07-26 | 2021-05-14 | 宇部材料工业株式会社 | Basic magnesium sulfate powder, method for producing basic magnesium sulfate powder, resin composition containing basic magnesium sulfate powder, master batch pellet, and molded body |
| CN110330611A (en) * | 2018-10-11 | 2019-10-15 | 中国林业科学研究院林产化学工业研究所 | Silanization silicon whisker system and its preparation method and application |
| CN114854195A (en) * | 2022-06-27 | 2022-08-05 | 河北金天塑胶新材料有限公司 | Antibacterial reinforced PA plastic special for baby carriage and preparation method thereof |
| CN114854195B (en) * | 2022-06-27 | 2023-11-17 | 河北金天塑胶新材料有限公司 | Antibacterial reinforced PA plastic special for baby carriage and preparation method thereof |
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