CN108424631A - A kind of preparation method of polymer-modified base plastic material - Google Patents
A kind of preparation method of polymer-modified base plastic material Download PDFInfo
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Abstract
The invention discloses a kind of preparation methods of polymer-modified base plastic material, belong to plastic material preparing technical field.The polyurethane with oil resistivity is modified first with red phosphorus, due at high temperature, red phosphorus can react with the ester group in polyurethane, self-control magnalium hydrotalcite is prepared by saline and alkaline coprecipitation again, surface modification is carried out to self-control magnalium hydrotalcite using sodium tripolyphosphate, making magnalium hydrotalcite uniform particle by oneself is dispersed in resin matrix surface simultaneously, in addition during making magnalium hydrotalcite endothermic decomposition by oneself, obtain Alkaline porous heat conduction oxide, it is combined to form protective film with the carbonizing production on resin matrix surface, effectively prevent the intrusion of heat and oxygen, aluminium nitride and boron nitride mixed grinding are obtained heat conduction mixed-powder by the present invention, and similar netted or chain structural form is formed in system, as heat conduction network chain, to improve the thermal conductivity of plastic material, it is with a wide range of applications.
Description
Technical field
The invention discloses a kind of preparation methods of polymer-modified base plastic material, belong to plastic material technology of preparing neck
Domain.
Background technology
Plastic material is using polymer as basis, and after addition additive under mono- constant temperature Du ﹑ pressure, processed modeling is made
Solid material obtained by type or crosslinking curing molding.Since most polymer has good insulation performance, it is widely used as
Insulating materials.Plastic cement is divided into thermoplasticity and two class of thermosetting property by thermal behavior.
Traditional plastics are mostly heat-insulating material, with the fast development of circuit board large scale integration and micro-packaging technology,
Electronic component volume constantly reduces, and packing density is higher and higher, and power is increasing, and calorific value therewith also increases.Cause
This, heat dissipation becomes a major issue in electronics industry.
Compared with conventional thermal conductive material, nylon have good tensile strength and anti-flex performance, but shock resistance compared with
Difference, and plastics have the characteristics that it is inflammable.Heat-conducting plastic is combined together the simplification of plastic shaping and excellent thermal conductivity,
The design freedom of bigger can be provided for research staff, and the weight of product is small.
However heat-conducting plastic is difficult to have high heat conductivility, insulation and excellent mechanical property simultaneously, it is difficult to be met practical
The needs used, and plastics are inflammable, easily cause security risk.
With human society quality of life be continuously improved, people to earphone product no matter from appearance, sound quality, material, make
There is higher requirement with everyways such as quality, earphone product is good and bad in performance, is whether have excellent wearability, is resistance to
Hot, ageing-resistant, chemical resistance, anti-flammability etc., plastic material are the main materials of earphone product, however, all at present
Plastic material is after product is made in overmolding, and in the case where properties of product basically reach requirement, it is serious all to there is plastic cement smell,
The problems such as oil is highly seasoned, makes staff, consumer be difficult to receive.Currently, the construction of sole is considerably complicated, it just in the broadest sense, can
Including all materials for constituting bottom such as outer bottom, midsole and heel.There are many type of sole materials, can be divided into natural class bottom material and
Synthesize two kinds of class bottom material.Natural class bottom material includes natural bottom leather, bamboo and wood material etc., and synthesis class bottom material includes rubber, plastics, rubber and plastic
Suitable materials, regenerated leather, elastic hardboard etc..It is not worn on uncomfortable if sole is really up to the mark, and has centainly to health
Influence.There are poor fire, poor thermal conductivity, anti-oxidant difference and oil resistivity are poor for common plastic material at present.
Therefore, a kind of polymer-modified base plastic material of invention has positive effect to plastic material preparing technical field.
Invention content
The technical problems to be solved by the invention：For current common plastic material, there are poor fires, poor thermal conductivity, anti-
Oxidation difference and oil resistivity are poor, can not meet the defect of market demands, provide a kind of system of polymer-modified base plastic material
Preparation Method.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of polymer-modified base plastic material, it is characterised in that specifically preparation process is：
（1）Weighing 65~70g polyurethane heat temperature raisings makes its softening, then 2~4g red phosphorus is added into the polyurethane after softening, after
It is continuous to be mixed, obtain modified polyurethane；
（2）Sodium hydroxide, natrium carbonicum calcinatum and deionized water are mixed and dissolved, obtains mixed ammonium/alkali solutions, then by six water chlorine
Change magnesium, six water alchlors and deionized water and dissolving is mixed, obtain self-control salting liquid, measures 50~55mL respectively from salt manufacturing
Solution and 27~30mL mixed ammonium/alkali solutions, it is spare, self-control salting liquid pH to 11~12 is adjusted with mixed ammonium/alkali solutions, is obtained suspended
Liquid；
（3）Suspension is placed in it is still aging under unglazed greenhouse, filtering removal filtrate, take out filter residue, filter is washed with deionized
Filter residue after washing is placed in baking oven and dries by slag, and grinding discharging obtains self-control magnalium hydrotalcite powder, will make magnalium water by oneself
Talcum powder and sodium tripolyphosphate mixing are placed in beaker and are stirred to react, cooling discharging, obtain modified self-control magnalium hydrotalcite powder
End；
（4）By aluminium nitride and boron nitride mixed grinding, obtain mixed-powder, then by Silane coupling reagent KH-570, absolute ethyl alcohol and
Distilled water is mixed, and obtains self-control dispersion liquid, continues that mixed-powder and self-control dispersion liquid are mixed and poured into beaker, is placed in
Ultrasonic disperse is placed in baking oven dry in ultrasonic wave separating apparatus, and grinding discharging obtains modified mixed-powder；
（5）It counts in parts by weight, weighs 30~40 parts of modified polyurethanes, 11~13 parts of modified self-control magnalium hydrotalcite powder respectively
End, 6~8 parts of modified mixed-powders, 2~4 parts of absolute ethyl alcohols and 1~3 part of maleic anhydride mixing are placed in blender and stir, and obtain
Mixture, then mixture is poured into extrusion forming in double screw extruder, it discharges to get polymer-modified base plastic material.
Step（1）The heat temperature raising temperature is 70~75 DEG C, and mixing time is 11~13min.
Step（2）The mass ratio 3 of the sodium hydroxide, natrium carbonicum calcinatum and deionized water：2：5, the stirring and dissolving time
Mass ratio for 12~16min, magnesium chloride hexahydrate, six water alchlors and deionized water is 3：1：6, dissolution time is mixed
For 11~13min.
Step（3）The still aging time is 1~2 day, and washing times are 2~4 times, and drying temperature is 85~90
DEG C, drying time is 27~30min, and the mass ratio for making magnalium hydrotalcite powder and sodium tripolyphosphate by oneself is 5：1, it is stirred to react temperature
Degree is 52~61 DEG C, and it is 30~35min to be stirred to react the time.
Step（4）The mass ratio of the aluminium nitride and boron nitride is 1：2, milling time is 8~10min, silane coupled
The volume ratio of agent KH-570, absolute ethyl alcohol and distilled water are 3：1：2, the mixing time be 3~5min, mixed-powder and from
The mass ratio of dispersion liquid processed is 4：1, ultrasonic disperse frequency is 20~22kHz, and the ultrasonic disperse time is 35~45min, dry temperature
Degree is 85~90 DEG C, and drying time is 1~2h.
Step（5）The speed of agitator is 210~240r/min, and mixing time is 16~20min, squeezes temperature and is
180~200 DEG C, squeeze pressure is 0.4~0.6MPa.
Compared with other methods, advantageous effects are the present invention：
（1）Using polyurethane as matrix, self-control magnalium hydrotalcite powder and modified mixed-powder are aided with the present invention as modifying agent
Polymer-modified base plastic material is prepared in absolute ethyl alcohol and maleic anhydride etc., first with red phosphorus to gathering with oil resistivity
Urethane is modified, and since at high temperature, red phosphorus can react with the ester group in polyurethane, phosphate is generated, to drop
The hot tearing of low polymer is volatilized, and the glassy covering of poly-metaphosphoric acid generated, and stable charcoal is formed on polyurethane resin surface
Change layer, starvation and heat, the anti-flammability and oil resistivity for being conducive to plastic material are improved, then pass through saline and alkaline coprecipitation
Self-control magnalium hydrotalcite is prepared, surface modification, P are carried out to self-control magnalium hydrotalcite using sodium tripolyphosphate3O10 5-With difference
- O-P-O- the keys of type are adsorbed in self-control magnalium hydrotalcite surface, and respectively with the magnesium ion and aluminium in self-control magnalium hydrotalcite
Coordination bonding reaction occurs for ion, to form layer protecting film, reduces self-control magnalium hydrotalcite particle surface polarity, enhances
Make by oneself the interparticle space steric effect of magnalium hydrotalcite, to improve self-control magnalium hydrotalcite and resin matrix it is compatible
Property, while making magnalium hydrotalcite uniform particle by oneself and being dispersed in resin matrix surface, fine and close cross-linked network structure is formed, is carried again
The anti-flammability of high plastic material；
（2）The existing low-temperature zone of decomposition temperature for making magnalium hydrotalcite by oneself in the present invention has high temperature section again, has widened resistance combustion temperature model
It encloses, the absorption water and intermediary water of self-control magnalium hydrotalcite is sloughed during endothermic decomposition, hydroxyls dehydrate is with vapor form
Effusion, and decompose release water outlet and carbon dioxide, these substances and can absorb a large amount of calory burnings, effective dilution oxygen and flammable
Property gas concentration play flame retardant effect to reduce the surface temperature of resin matrix, in addition self-control magnalium hydrotalcite inhale
In thermal decomposition process, Alkaline porous heat conduction oxide is obtained, it is combined to form protection with the carbonizing production on resin matrix surface
Film effectively prevents the intrusion of heat and oxygen, further increases the anti-flammability of plastic material, anti-oxidant and thermal conductivity；
（3）Aluminium nitride and boron nitride mixed grinding are obtained heat conduction mixed-powder by the present invention, mixed to heat conduction using silane coupling agent
It closes powder to be modified, so that heat conduction mixed-powder is dispersed in resin matrix, promote phase mutual connection between heat conduction mixed-powder
It touches and has an effect, and form similar netted or chain structural form, as heat conduction network chain in system, to improve plastic cement
The thermal conductivity of material, is with a wide range of applications.
Specific implementation mode
Weighing 65~70g polyurethane and being heated to 70~75 DEG C makes its softening, then is added 2 into the polyurethane after softening
~4g red phosphorus, continues 11~13min of mixing, obtains modified polyurethane；In mass ratio 3：2：5 by sodium hydroxide, anhydrous carbon
12~16min of dissolving is mixed in sour sodium and deionized water, obtains mixed ammonium/alkali solutions, then is 3 in mass ratio：1：6 by six water chlorine
Change magnesium, 11~13min of dissolving is mixed in six water alchlors and deionized water, obtains self-control salting liquid, measure 50 respectively~
55mL makes salting liquid and 27~30mL mixed ammonium/alkali solutions by oneself, spare, and self-control salting liquid pH to 11~12 is adjusted with mixed ammonium/alkali solutions,
Obtain suspension；Suspension is placed under unglazed greenhouse still aging 1~2 day, filtering removal filtrate, take out filter residue, spend from
Sub- water washing filter residue 2~4 times, the filter residue after washing is placed in baking oven, and 27~30min is dried at being 85~90 DEG C in temperature,
Grinding discharging obtains self-control magnalium hydrotalcite powder, is in mass ratio 5：1 will self-control magnalium hydrotalcite powder and sodium tripolyphosphate
Mixing is placed in beaker, and 30~35min is stirred to react at being 52~61 DEG C in temperature, and cooling discharging obtains modified self-control magnalium
Hydrotalcite powder；It is 1 in mass ratio：2 by aluminium nitride and boron nitride 8~10min of mixed grinding, obtains mixed-powder, then by silicon
Alkane coupling agent kh-570, absolute ethyl alcohol and distilled water are 3 by volume：1：2 are mixed 3~5min, obtain self-control dispersion
Liquid continues mixed-powder and self-control dispersion liquid to be 4 in mass ratio：1 mixing is poured into beaker, and ultrasonic wave separating apparatus is placed in
In, 35~45min of ultrasonic disperse is placed in baking oven under conditions of frequency is 20~22kHz, in the case where temperature is 85~90 DEG C
Dry 1~2h, grinding discharging obtain modified mixed-powder；Count in parts by weight, weigh respectively 30~40 parts of modified polyurethanes,
11~13 parts of modified self-control magnalium hydrotalcite powder, 6~8 parts of modified mixed-powders, 2~4 parts of absolute ethyl alcohols and 1~3 part of Malaysia
Acid anhydrides mixing is placed in blender, and 16~20min is stirred under conditions of rotating speed is 210~240r/min, obtains mixture, then
Mixture is poured into double screw extruder, is squeezed under conditions of temperature is 180~200 DEG C, pressure is 0.4~0.6MPa
Type discharges to get polymer-modified base plastic material.
Weighing 65g polyurethane and being heated to 70 DEG C makes its softening, then 2g red phosphorus is added into the polyurethane after softening, after
It is continuous that 11min is mixed, obtain modified polyurethane；In mass ratio 3：2：5 mix sodium hydroxide, natrium carbonicum calcinatum and deionized water
Stirring and dissolving 12min is closed, mixed ammonium/alkali solutions are obtained, then is 3 in mass ratio：1：6 by magnesium chloride hexahydrate, six water alchlors and go
Dissolving 11min is mixed in ionized water, obtains self-control salting liquid, measures 50mL self-control salting liquids respectively and 27mL mixes alkali soluble
Liquid, it is spare, self-control salting liquid pH to 11 is adjusted with mixed ammonium/alkali solutions, obtains suspension；Suspension is placed in quiet under unglazed greenhouse
Ageing 1 day is set, filtering removal filtrate takes out filter residue, filter residue is washed with deionized 2 times, the filter residue after washing is placed in baking oven
In, 27min is dried at being 85 DEG C in temperature, grinding discharging obtains self-control magnalium hydrotalcite powder, is in mass ratio 5：1 will be certainly
Magnalium hydrotalcite powder and sodium tripolyphosphate mixing processed is placed in beaker, is stirred to react 30min at being 52 DEG C in temperature, cooling goes out
Material obtains modified self-control magnalium hydrotalcite powder；It is 1 in mass ratio：2, by aluminium nitride and boron nitride mixed grinding 8min, obtain
Mixed-powder, then by Silane coupling reagent KH-570, absolute ethyl alcohol and distilled water by volume be 3：1：2 are mixed 3min, obtain
To self-control dispersion liquid, continue mixed-powder and self-control dispersion liquid to be 4 in mass ratio：1 mixing is poured into beaker, and ultrasound is placed in
In wave separating apparatus, ultrasonic disperse 35min is placed in baking oven under conditions of frequency is 20kHz, dry at being 85 DEG C in temperature
1h, grinding discharging obtain modified mixed-powder；It counts in parts by weight, weighs 30 parts of modified polyurethanes, 11 parts of modified self-controls respectively
Magnalium hydrotalcite powder, 6 parts of modified mixed-powders, 2 parts of absolute ethyl alcohols and 1 part of maleic anhydride mixing are placed in blender, are being turned
Speed stirs 16min under conditions of being 210r/min, mixture is obtained, then mixture is poured into double screw extruder, in temperature
Extrusion forming under conditions of being 0.4MPa for 180 DEG C, pressure discharges to get polymer-modified base plastic material.
Weighing 67g polyurethane and being heated to 72 DEG C makes its softening, then 3g red phosphorus is added into the polyurethane after softening, after
It is continuous that 12min is mixed, obtain modified polyurethane；In mass ratio 3：2：5 mix sodium hydroxide, natrium carbonicum calcinatum and deionized water
Stirring and dissolving 14min is closed, mixed ammonium/alkali solutions are obtained, then is 3 in mass ratio：1：6 by magnesium chloride hexahydrate, six water alchlors and go
Dissolving 12min is mixed in ionized water, obtains self-control salting liquid, measures 52mL self-control salting liquids respectively and 28mL mixes alkali soluble
Liquid, it is spare, self-control salting liquid pH to 11 is adjusted with mixed ammonium/alkali solutions, obtains suspension；Suspension is placed in quiet under unglazed greenhouse
Ageing 1 day is set, filtering removal filtrate takes out filter residue, filter residue is washed with deionized 3 times, the filter residue after washing is placed in baking oven
In, 28min is dried at being 87 DEG C in temperature, grinding discharging obtains self-control magnalium hydrotalcite powder, is in mass ratio 5：1 will be certainly
Magnalium hydrotalcite powder and sodium tripolyphosphate mixing processed is placed in beaker, is stirred to react 32min at being 56 DEG C in temperature, cooling goes out
Material obtains modified self-control magnalium hydrotalcite powder；It is 1 in mass ratio：2, by aluminium nitride and boron nitride mixed grinding 9min, obtain
Mixed-powder, then by Silane coupling reagent KH-570, absolute ethyl alcohol and distilled water by volume be 3：1：2 are mixed 4min, obtain
To self-control dispersion liquid, continue mixed-powder and self-control dispersion liquid to be 4 in mass ratio：1 mixing is poured into beaker, and ultrasound is placed in
In wave separating apparatus, ultrasonic disperse 40min is placed in baking oven under conditions of frequency is 21kHz, dry at being 87 DEG C in temperature
1.5h, grinding discharging obtain modified mixed-powder；It counts in parts by weight, weighs 35 parts of modified polyurethanes, 12 parts of modifications respectively certainly
Magnalium hydrotalcite powder, 7 parts of modified mixed-powders, 3 parts of absolute ethyl alcohols and 2 parts of maleic anhydride mixing processed are placed in blender,
Rotating speed stirs 18min under conditions of being 230r/min, mixture is obtained, then mixture is poured into double screw extruder, in temperature
Extrusion forming under conditions of degree is 190 DEG C, pressure is 0.5MPa discharges to get polymer-modified base plastic material.
Weighing 70g polyurethane and being heated to 75 DEG C makes its softening, then 4g red phosphorus is added into the polyurethane after softening, after
It is continuous that 13min is mixed, obtain modified polyurethane；In mass ratio 3：2：5 mix sodium hydroxide, natrium carbonicum calcinatum and deionized water
Stirring and dissolving 16min is closed, mixed ammonium/alkali solutions are obtained, then is 3 in mass ratio：1：6 by magnesium chloride hexahydrate, six water alchlors and go
Dissolving 13min is mixed in ionized water, obtains self-control salting liquid, measures 55mL self-control salting liquids respectively and 30mL mixes alkali soluble
Liquid, it is spare, self-control salting liquid pH to 12 is adjusted with mixed ammonium/alkali solutions, obtains suspension；Suspension is placed in quiet under unglazed greenhouse
Ageing 2 days is set, filtering removal filtrate takes out filter residue, filter residue is washed with deionized 4 times, the filter residue after washing is placed in baking oven
In, 30min is dried at being 90 DEG C in temperature, grinding discharging obtains self-control magnalium hydrotalcite powder, is in mass ratio 5：1 will be certainly
Magnalium hydrotalcite powder and sodium tripolyphosphate mixing processed is placed in beaker, is stirred to react 35min at being 61 DEG C in temperature, cooling goes out
Material obtains modified self-control magnalium hydrotalcite powder；It is 1 in mass ratio：2, by aluminium nitride and boron nitride mixed grinding 10min, obtain
Mixed-powder, then by Silane coupling reagent KH-570, absolute ethyl alcohol and distilled water by volume be 3：1：2 are mixed 5min, obtain
To self-control dispersion liquid, continue mixed-powder and self-control dispersion liquid to be 4 in mass ratio：1 mixing is poured into beaker, and ultrasound is placed in
In wave separating apparatus, ultrasonic disperse 45min is placed in baking oven under conditions of frequency is 22kHz, dry at being 90 DEG C in temperature
2h, grinding discharging obtain modified mixed-powder；It counts in parts by weight, weighs 40 parts of modified polyurethanes, 13 parts of modified self-controls respectively
Magnalium hydrotalcite powder, 8 parts of modified mixed-powders, 4 parts of absolute ethyl alcohols and 3 parts of maleic anhydride mixing are placed in blender, are being turned
Speed stirs 20min under conditions of being 240r/min, mixture is obtained, then mixture is poured into double screw extruder, in temperature
Extrusion forming under conditions of being 0.6MPa for 200 DEG C, pressure discharges to get polymer-modified base plastic material.
It is poly- to modification produced by the present invention as a comparison case with the polymer-modified base plastic material of Shanghai company production
The polymer-modified base plastic material closed in object base plastic material and comparative example carries out performance detection, and testing result is as shown in table 1：
Test method：
Oil resistivity test is detected using the method for oil resistant experiment, and the plastic material in example 1~3 and comparative example is put into bavin
In oil, its tensile strength is measured afterwards for 24 hours, experiment condition is（Temperature × time）Room temperature × for 24 hours；
Determination of conductive coefficients is detected by GB T 5990-2006 standards；
Flame retardant rating test is by flame retardant rating by HB, and incremental standard is detected step by step to V-0 by V-2, V-1；
Oxygen index (OI) test is detected using oxygen index (OI) tester；
Horizontal firing length testing is detected by GB/T2408 combustibility test method horizontal firing methods；
Vertical combustion time test measures normal beam technique by GB/T5455 flame retardant properties and is detected；
Antioxygenic property test method：Accelerated oxidation test is done using Schaal Oven Methods, it will be in example 1~3 and comparative example
Plastic material is respectively placed in the relatively good insulating box of air and stores 4d, is sampled every for 24 hours, according to national regulation GB/
The method of T5009.37-2003 measures peroxide value.
1 plastic material performance measurement knot of table
According to the polymer-modified base plastic material good flame resistance produced by the present invention of data among the above, flame retardant rating reaches 0
Grade, thermal conductivity is good, good in oxidation resistance, and oil resistivity is good, has broad application prospects.
Claims (6)
1. a kind of preparation method of polymer-modified base plastic material, it is characterised in that specifically preparation process is：
（1）Weighing 65~70g polyurethane heat temperature raisings makes its softening, then 2~4g red phosphorus is added into the polyurethane after softening, after
It is continuous to be mixed, obtain modified polyurethane；
（2）Sodium hydroxide, natrium carbonicum calcinatum and deionized water are mixed and dissolved, obtains mixed ammonium/alkali solutions, then by six water chlorine
Change magnesium, six water alchlors and deionized water and dissolving is mixed, obtain self-control salting liquid, measures 50~55mL respectively from salt manufacturing
Solution and 27~30mL mixed ammonium/alkali solutions, it is spare, self-control salting liquid pH to 11~12 is adjusted with mixed ammonium/alkali solutions, is obtained suspended
Liquid；
（3）Suspension is placed in it is still aging under unglazed greenhouse, filtering removal filtrate, take out filter residue, filter is washed with deionized
Filter residue after washing is placed in baking oven and dries by slag, and grinding discharging obtains self-control magnalium hydrotalcite powder, will make magnalium water by oneself
Talcum powder and sodium tripolyphosphate mixing are placed in beaker and are stirred to react, cooling discharging, obtain modified self-control magnalium hydrotalcite powder
End；
（4）By aluminium nitride and boron nitride mixed grinding, obtain mixed-powder, then by Silane coupling reagent KH-570, absolute ethyl alcohol and
Distilled water is mixed, and obtains self-control dispersion liquid, continues that mixed-powder and self-control dispersion liquid are mixed and poured into beaker, is placed in
Ultrasonic disperse is placed in baking oven dry in ultrasonic wave separating apparatus, and grinding discharging obtains modified mixed-powder；
（5）It counts in parts by weight, weighs 30~40 parts of modified polyurethanes, 11~13 parts of modified self-control magnalium hydrotalcite powder respectively
End, 6~8 parts of modified mixed-powders, 2~4 parts of absolute ethyl alcohols and 1~3 part of maleic anhydride mixing are placed in blender and stir, and obtain
Mixture, then mixture is poured into extrusion forming in double screw extruder, it discharges to get polymer-modified base plastic material.
2. a kind of preparation method of polymer-modified base plastic material according to claim 1, it is characterised in that：Step
（1）The heat temperature raising temperature is 70~75 DEG C, and mixing time is 11~13min.
3. a kind of preparation method of polymer-modified base plastic material according to claim 1, it is characterised in that：Step
（2）The mass ratio 3 of the sodium hydroxide, natrium carbonicum calcinatum and deionized water：2：5, the stirring and dissolving time is 12~16min,
The mass ratio of magnesium chloride hexahydrate, six water alchlors and deionized water is 3：1：6, mixing dissolution time is 11~13min.
4. a kind of preparation method of polymer-modified base plastic material according to claim 1, it is characterised in that：Step
（3）The still aging time is 1~2 day, and washing times are 2~4 times, and drying temperature is 85~90 DEG C, and drying time is
27~30min, the mass ratio for making magnalium hydrotalcite powder and sodium tripolyphosphate by oneself is 5：1, it is 52~61 DEG C to be stirred to react temperature,
It is 30~35min to be stirred to react the time.
5. a kind of preparation method of polymer-modified base plastic material according to claim 1, it is characterised in that：Step
（4）The mass ratio of the aluminium nitride and boron nitride is 1：2, milling time is 8~10min, Silane coupling reagent KH-570, nothing
The volume ratio of water-ethanol and distilled water is 3：1：2, the mixing time is 3~5min, the matter of mixed-powder and self-control dispersion liquid
Amount is than being 4：1, ultrasonic disperse frequency is 20~22kHz, and the ultrasonic disperse time is 35~45min, and drying temperature is 85~90 DEG C,
Drying time is 1~2h.
6. a kind of preparation method of polymer-modified base plastic material according to claim 1, it is characterised in that：Step
（5）The speed of agitator is 210~240r/min, and mixing time is 16~20min, and it is 180~200 DEG C to squeeze temperature, is squeezed
Pressure pressure is 0.4~0.6MPa.
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Application publication date: 20180821 |