CN106800765B - It is a kind of for makrolon material of smart mobile phone shell and its preparation method and application - Google Patents
It is a kind of for makrolon material of smart mobile phone shell and its preparation method and application Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention belongs to smart mobile phone sheathing material technical fields, more particularly to a kind of for makrolon material of smart mobile phone shell and its preparation method and application.Prepare the aqueous solution of nanometer diamond alkene, blending and modifying is carried out to get the makrolon material with makrolon powder again after being sufficiently mixed with calcium carbonate, wherein, the mass ratio of 2 10wt%s of the nanometer diamond alkene additive amount for makrolon powder, calcium carbonate and nanometer diamond alkene is 15 18:4‑5.Mobile phone shell prepared by the present invention, chemical resistance improve, and hardness improves, and wearability improves；Good heat conductivity can improve the speed of service of mobile phone, the service life of extending cell phone；Mobile phone is unlikely to deform when by external impacts；The good toughness of phone housing.
Description
Technical field
The invention belongs to smart mobile phone sheathing material technical fields, more particularly to a kind of poly- carbon for smart mobile phone shell
Acid esters material and its preparation method and application.
Background technology
With communication and the rapid development of digital technology, mobile phone has already been through for several times in the time of short decades
Upgrading becomes the epoch epitome of scientific and technological progress.Mobile phone plays an increasingly important role in people's daily life,
So as " the 5th media " after newspaper, broadcast, TV, network, from initial interpersonal speech communication object to comprehensive matchmaker
Body is grown up, and just because of this, people start have higher requirement to mobile phone, and is not content with it and can be conversed, send short messages, surf the Internet
The utility functions such as chat, and have requirements at the higher level in its appearance, feel, pursuit is also comfortably modern with beauty to mobile phone
One kind new pursue.
Phone housing is not only the protective umbrella of mobile phone strength, can effectively reduce the invasion of dust, reduces the damage inadvertently fallen off
Evil enhances the service life of mobile phone, it is often more important that can promote the Product Experience of user, therefore the material to making phone housing
Material proposes that intensity is high, heat-resisting heat conduction is good, has the requirements such as electromagnetic wave shielding, appearance be good, and shaped article is then to light weight thin-walled
Change direction to develop, to have the function that protection, heat dissipation, beauty.
Common handset sheathing material mainly has：Engineering plastics (PC/ABS/PC+ABS), metal material (stainless steel, magnalium
Alloy), composite material (function ceramics, glass) three categories.But these types of material has the shortcomings that some are apparent.Such as engineering plastic
Expect the low easy scuffing of phone housing hardness made of the material of class, poor thermal conductivity influences the service life of mobile phone.Metal material makes
Phone housing high processing costs, signal shielding can be generated, worn no resistance, easily bent when by external force, generate deformation,
Influence the service life of mobile phone.And phone housing made of using composite material, particularly with zirconia ceramics, deposit in use
Frangible the defects of.
Invention content
The object of the present invention is to provide it is a kind of for makrolon material of smart mobile phone shell and preparation method thereof and should
With, can overcome current existing handset sheathing material there are the defects of, have that hardness is high, wearability is strong, thermal diffusivity is good, not variable
The advantages that shape.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of makrolon material for smart mobile phone shell is obtained by laxative remedy：Prepare the water-soluble of nanometer diamond alkene
Liquid carries out blending and modifying to get the makrolon material with makrolon powder again after being sufficiently mixed with calcium carbonate, wherein,
The mass ratio of 2-10wt% of the nanometer diamond alkene additive amount for makrolon powder, calcium carbonate and nanometer diamond alkene is (15-18):
(4-5)。
Preferably, mixture of the nanometer diamond alkene for following three kinds of different grain sizes nanometer diamond alkene, 50nm, 200nm,
250nm, mass ratio control are (1-2)：(3-4)：(4-5).Aforementioned proportion can extraordinary promotion bulk density.
When preparing the aqueous solution of nanometer diamond alkene, will nanometer diamond alkene mix after be cleaned, dried, later again with the moon from
Sub- surfactant and nonionic surfactant are mixed to prepare nanometer diamond aqueous solution, and nanometer diamond aqueous solution is consolidated
Content is 10-15%；The anion surfactant be neopelex, a concentration of 0.01-0.1g/cm3；Institute
The nonionic surfactant stated be Triton X-100, a concentration of 10-6-10-5mol/dm3。
After anion surfactant being added in dry nanometer diamond alkene, the 15000-20000r/min under room temperature
10-20min is stirred under speed；After adding in nonionic surfactant, continue to stir at normal temperatures, rotary rpm control exists
10000-15000r/min, mixing time 10-20min.
Ultrasonic wave alkali cleaning, ultrasonic cleaning, pickling, ultrasonic water are carried out successively when being cleaned after the mixing of nanometer diamond alkene
It washes.
Specifically：During ultrasonic wave alkali cleaning, ultrasonic frequency is 30~35KHz, and lye is that the NaOH of concentration 11-14wt% is molten
Liquid, alkali wash water temperature is between 45-55 DEG C, and Stirring, and rotary rpm control exists in 25~35rpm, scavenging period control
25~35min；
During ultrasonic cleaning, ultrasonic frequency is 30~35KHz, and cleaning solution is deionized water, Stirring during cleaning, rotation
Speed of walking around control is cleaned repeatedly in 20~25min, measurement supernatant liquor pH value until pH in 15~25rpm, mixing time control
=7；
During pickling, pickle is the dilution heat of sulfuric acid of concentration 15-35wt%, and temperature is room temperature, Stirring during pickling, rotation
Speed of walking around control is controlled in 10~15rpm, mixing time in 10~15min；
During ultrasonic wave water washing, ultrasonic frequency is 30~35KHz, and water lotion is deionized water, and room temperature cleans, and rotation is stirred
Mix, in 15~25rpm, mixing time measures supernatant liquor pH value in 10~15min for rotary rpm control, repeatedly cleaning until
pH=7。
The drying is carried out using staged baking process, and heating rate is 2 DEG C/min, and room temperature is warming up to 70 DEG C, perseverance
Temperature heat preservation 30min is warming up to 90 DEG C, constant temperature heat preservation 30min, is warming up to 120 DEG C, and constant temperature heat preservation 60min is warming up to 300 DEG C, perseverance
Temperature heat preservation 2h, it is for use to naturally cool to room temperature.
Further, the blending and modifying carries out melt blended 4-6h in opening rubber mixing machine, and central roll barrel temperature is：Before
Roller is 170-180 DEG C；Back roller is 160-170 DEG C.
Specifically, the preparation process is as follows：
1st, batch mixing and purification
1) three kinds of varigrained nanometer diamond alkene are put into three-dimensional material mixer and carry out batch mixing, mix 5-10min, Ran Houqu
Go out for use；
2) ultrasonic wave alkali cleaning：Mixed raw material is put into alkaline bath, alkali cleaning trench bottom is equipped with supersonic generator,
Ultrasonic frequency is 30~35KHz, the NaOH solution for being a concentration of 11%-14% in alkali cleaning pond, the control of alkali wash water temperature 45~
Between 55 DEG C, and Stirring, rotary rpm control are controlled in 25~35rpm, scavenging period in 25~35min；
3) ultrasonic cleaning：Ultrasonic frequency is 30~35KHz, and cleaning solution is deionized water, and the raw material after alkali cleaning is put
Enter in cleaning solution and Stirring, rotary rpm are controlled in 15~25rpm, mixing time control is on 20~25min, measurement upper strata
Clear liquid pH value, cleaning is until pH=7 repeatedly；
4) pickling：Pickle is a concentration of 15%~35% dilution heat of sulfuric acid, and temperature is room temperature, after ultrasonic wave water washing
Raw material is put into pickling solution and stirs, and rotary rpm control is controlled in 10~15rpm, mixing time in 10~15min；
5) ultrasonic wave water washing：Ultrasonic wave water washing be room temperature cleaning, ultrasonic frequency be 30~35KHz, water lotion for go from
Sub- water；Raw material after pickling is put into deionized water and Stirring, rotary rpm are controlled in 15~25rpm, mixing time
In 10~15min, supernatant liquor pH value is measured, cleaning is until pH=7 repeatedly.
6) it dries：The purpose of drying is that the moisture in processed raw material and ash content removal, baking process are used rank
Ladder type baking process carries out, and heating rate is 2 DEG C/min, and room temperature is warming up to 70 DEG C, and constant temperature heat preservation 30min is warming up to 90 DEG C, perseverance
Temperature heat preservation 30min is warming up to 120 DEG C, constant temperature heat preservation 60min, is warming up to 300 DEG C, and constant temperature heat preservation 2h naturally cools to room temperature and treats
With.
2nd, disperse
Ultrahigh speed stirs：Add in a concentration of 10-2-10-1g/cm3RDC-25S anion surfactant (detergent alkylates
Sodium sulfonate), temperature is room temperature, raw material is put into stirring, rotary rpm is controlled in 15000-20000r/min, mixing time 10-
20min adds a concentration of 10-6-10-5mol/dm3RGN-10 nonionic surfactants (Triton X-100)
Continue to stir at normal temperatures, rotary rpm control is in 10000-15000r/min, mixing time 10-20min, preparation nanometer diamond
Aqueous solution, nanometer diamond alkene are uniformly dispersed and are stablized and do not precipitate.
3rd, blending and modifying
Nanometer diamond aqueous solution after activation decentralized processing is added in calcium carbonate by a certain percentage, in mixed at high speed
3-5h is stirred in machine, makrolon powder is added in and continues melt blended 4-6h (the roller barrel temperatures in opening rubber mixing machine：Before
Roller is 170-180 DEG C, and back roller is 160-170 DEG C).Water content in raw materials treated is less than 0.02%.
The makrolon material on smart mobile phone shell is prepared is applied, makrolon material is filled into injection molding machine
In, by temperature it is the mold that 230-310 DEG C of raw material is molded into 80-110 DEG C in 0.35-0.5s under 130-180Mpa pressure
In, back pressure selects 40-60bar, the pressurize 1s under 70-100Mpa, is demoulded after then cooling down 5-10s, obtains phone housing.
Wherein, middling speed or high speed injection motding are selected during injection, the rotational speed of screw rod selects 60-80rpm during injection.Injection molding machine
Each section of temperature be：250-270 DEG C of nozzle temperature, 260-285 DEG C of first segment, 270-300 DEG C of second segment, 240-270 DEG C of blanking section.
Compared with prior art, the present invention it has the following advantages that：
1st, nanometer diamond alkene stability is strong, and hardness is high, and wearability is strong, is added to outside the makrolon mobile phone of nanometer diamond alkene
The chemical resistance of shell improves, and hardness improves, and wearability improves；
2nd, it because of the good capacity of heat transmission of nanometer diamond alkene, is added to nanometer diamond alkene and improves makrolon phone housing
Heat conductivility, while do not have an impact the signal strength of mobile phone, the speed of service of mobile phone, the use of extending cell phone can be improved
Service life；
3rd, bending strength improves, and mobile phone is made to be unlikely to deform when by external impacts；
4th, the notch impact strength of makrolon is improved, improves the toughness of phone housing.
Description of the drawings
Fig. 1 is influence of the different nanometer diamond alkene additive amounts to material bending strength；
Fig. 2 is influence of the different nanometer diamond alkene additive amounts to material hardness；
Fig. 3 is influence of the different nanometer diamond alkene additive amounts to material notch impact strength.
Specific embodiment
Technical scheme of the present invention is illustrated with specific embodiment below, but the scope of the present invention is not limited thereto：
Embodiment 1
A kind of makrolon material for smart mobile phone shell, preparation process are as follows：
1st, batch mixing and purification
1) three kinds of varigrained nanometer diamond alkene are put into three-dimensional material mixer and carry out batch mixing, mixed 5min, then take out
For use；
2) ultrasonic wave alkali cleaning：Mixed raw material is put into alkaline bath, alkali cleaning trench bottom is equipped with supersonic generator,
Ultrasonic frequency is 30KHz, is a concentration of 11% NaOH solution in alkali cleaning pond, and alkali wash water temperature is controlled at 45 DEG C, and is rotated and stirred
It mixes, rotary rpm control is controlled in 25rpm, scavenging period in 25min；
3) ultrasonic cleaning：Ultrasonic frequency is 30KHz, and cleaning solution is deionized water, and the raw material after alkali cleaning is put into clearly
In washing lotion and Stirring, rotary rpm are controlled in 15rpm, and mixing time is controlled in 20min, measures supernatant liquor pH value, instead
Multiple cleaning is until pH=7；
4) pickling：Pickle is a concentration of 15% dilution heat of sulfuric acid, and temperature is room temperature, by the raw material after ultrasonic wave water washing
It is put into pickling solution and stirs, rotary rpm control is controlled in 10rpm, mixing time in 10min；
5) ultrasonic wave water washing：Ultrasonic wave water washing is cleaned for room temperature, and ultrasonic frequency 30KHz, water lotion is deionized water；
Raw material after pickling is put into deionized water and Stirring, rotary rpm are controlled in 15rpm, mixing time is in 10min, survey
Supernatant liquor pH value is measured, cleaning is until pH=7 repeatedly.
6) it dries：It is carried out using staged baking process, heating rate is 2 DEG C/min, and room temperature is warming up to 70 DEG C, and constant temperature is protected
Warm 30min is warming up to 90 DEG C, constant temperature heat preservation 30min, is warming up to 120 DEG C, and constant temperature heat preservation 60min is warming up to 300 DEG C, constant temperature is protected
Warm 2h, it is for use to naturally cool to room temperature.
2nd, disperse
Ultrahigh speed stirs：Add in a concentration of 10-2g/cm3RDC-25S anion surfactant (dodecyl benzene sulfonic acid
Sodium), temperature is room temperature, raw material is put into stirring, rotary rpm control adds dense in 15000r/min, mixing time 10min
Spend is 10-6mol/dm3RGN-10 nonionic surfactants (Triton X-100) continue to stir at normal temperatures, revolve
Speed of walking around control is uniformly dispersed in 10000r/min, mixing time 10min, obtained nanometer diamond aqueous solution, nanometer diamond alkene
And stabilization does not precipitate.
3rd, blending and modifying
Nanometer diamond aqueous solution after activation decentralized processing is added in calcium carbonate by a certain percentage, in mixed at high speed
3h is stirred in machine, makrolon powder is added in and continues melt blended 4h (the roller barrel temperatures in opening rubber mixing machine：Preliminary roller is
170℃；Back roller is 160 DEG C).Water content in raw materials treated is less than 0.02%.
The makrolon material on smart mobile phone shell is prepared is applied, makrolon material is filled into injection molding machine
In, the raw material that temperature is 230 DEG C is molded into 0.35s in 80 DEG C of mold under 130Mpa pressure, back pressure is selected
40bar, the pressurize 1s under 70Mpa demould after then cooling down 5s, obtain phone housing.
Wherein, middling speed or high speed injection motding are selected during injection, the rotational speed of screw rod selects 60rpm during injection.Injection molding machine is each
Duan Wendu is：250 DEG C of nozzle temperature, 260 DEG C of first segment, 270 DEG C of second segment, 240 DEG C of blanking section.
Embodiment 2
For the makrolon material of smart mobile phone shell, preparation process is as follows：
1st, batch mixing and purification
1) three kinds of varigrained nanometer diamond alkene are put into three-dimensional material mixer and carry out batch mixing, mixed 10min, then take out
For use；
2) ultrasonic wave alkali cleaning：Mixed raw material is put into alkaline bath, alkali cleaning trench bottom is equipped with supersonic generator,
Ultrasonic frequency is 35KHz, is a concentration of 14% NaOH solution in alkali cleaning pond, and alkali wash water temperature is controlled at 55 DEG C, and is rotated and stirred
It mixes, rotary rpm control is controlled in 35rpm, scavenging period in 35min；
3) ultrasonic cleaning：Ultrasonic frequency is 35KHz, and cleaning solution is deionized water, and the raw material after alkali cleaning is put into
In cleaning solution and Stirring, rotary rpm are controlled in 25rpm, and mixing time is controlled in 25min, measures supernatant liquor pH value,
Cleaning is until pH=7 repeatedly；
4) pickling：Pickle is a concentration of 35% dilution heat of sulfuric acid, and temperature is room temperature, by the raw material after ultrasonic wave water washing
It is put into pickling solution and stirs, rotary rpm control is controlled in 15rpm, mixing time in 15min；
5) ultrasonic wave water washing：Ultrasonic wave water washing is cleaned for room temperature, and ultrasonic frequency 35KHz, water lotion is deionized water；
Raw material after pickling is put into deionized water and Stirring, rotary rpm are controlled in 25rpm, mixing time is in 15min, survey
Supernatant liquor pH value is measured, cleaning is until pH=7 repeatedly；
6) it dries：It is carried out using staged baking process, heating rate is 2 DEG C/min, and room temperature is warming up to 70 DEG C, and constant temperature is protected
Warm 30min is warming up to 90 DEG C, constant temperature heat preservation 30min, is warming up to 120 DEG C, and constant temperature heat preservation 60min is warming up to 300 DEG C, constant temperature is protected
Warm 2h, it is for use to naturally cool to room temperature.
2nd, disperse
Ultrahigh speed stirs：Add in a concentration of 10-1g/cm3RDC-25S anion surfactant (dodecyl benzene sulfonic acid
Sodium), temperature is room temperature, raw material is put into stirring, rotary rpm control adds dense in 20000r/min, mixing time 10min
Spend is 10-5mol/dm3RGN-10 nonionic surfactants (Triton X-100) continue to stir at normal temperatures, revolve
Speed of walking around control is uniformly dispersed in 15000r/min, mixing time 20min, obtained nanometer diamond aqueous solution, nanometer diamond alkene
And stabilization does not precipitate.
3rd, blending and modifying
Nanometer diamond aqueous solution after activation decentralized processing is added in calcium carbonate by a certain percentage, in mixed at high speed
5h is stirred in machine, makrolon powder is added in and continues melt blended 6h (the roller barrel temperatures in opening rubber mixing machine：Preliminary roller is
180℃；Back roller is 170 DEG C).Water content in raw materials treated is less than 0.02%.
The makrolon material on smart mobile phone shell is prepared is applied, makrolon material is filled into injection molding machine
In, the raw material that temperature is 310 DEG C is molded into 0.5s in 110 DEG C of mold under 180Mpa pressure, back pressure is selected
60bar, the pressurize 1s under 100Mpa demould after then cooling down 10s, obtain phone housing.
Wherein, middling speed or high speed injection motding are selected during injection, the rotational speed of screw rod selects 80rpm during injection.Injection molding machine is each
Duan Wendu is：270 DEG C of nozzle temperature, 285 DEG C of first segment, 300 DEG C of second segment, 270 DEG C of blanking section.
Embodiment 3
For the makrolon material of smart mobile phone shell, preparation process is as follows：
1st, batch mixing and purification
1) three kinds of varigrained nanometer diamond alkene are put into three-dimensional material mixer and carry out batch mixing, mixed 7min, then take out
For use；
2) ultrasonic wave alkali cleaning：Mixed raw material is put into alkaline bath, alkali cleaning trench bottom is equipped with supersonic generator,
Ultrasonic frequency is 32KHz, is a concentration of 13% NaOH solution in alkali cleaning pond, and alkali wash water temperature is controlled at 50 DEG C, and is rotated and stirred
It mixes, rotary rpm control is controlled in 27rpm, scavenging period in 30min；
3) ultrasonic cleaning：Ultrasonic frequency is 32KHz, and cleaning solution is deionized water, and the raw material after alkali cleaning is put into clearly
In washing lotion and Stirring, rotary rpm are controlled in 20rpm, and mixing time is controlled in 23min, measures supernatant liquor pH value, instead
Multiple cleaning is until pH=7；
4) pickling：Pickle is a concentration of 25% dilution heat of sulfuric acid, and temperature is room temperature, by the raw material after ultrasonic wave water washing
It is put into pickling solution and stirs, rotary rpm control is controlled in 13rpm, mixing time in 12min；
5) ultrasonic wave water washing：Ultrasonic wave water washing is cleaned for room temperature, and ultrasonic frequency is 32KHz, and water lotion is deionization
Water；Raw material after pickling is put into deionized water and Stirring, rotary rpm are controlled in 20rpm, mixing time exists
13min measures supernatant liquor pH value, and cleaning is until pH=7 repeatedly；
6) it dries：It is carried out using staged baking process, heating rate is 2 DEG C/min, and room temperature is warming up to 70 DEG C, and constant temperature is protected
Warm 30min is warming up to 90 DEG C, constant temperature heat preservation 30min, is warming up to 120 DEG C, and constant temperature heat preservation 60min is warming up to 300 DEG C, constant temperature is protected
Warm 2h, it is for use to naturally cool to room temperature.
2nd, disperse
Ultrahigh speed stirs：Add in a concentration of 10-1g/cm3RDC-25S anion surfactant (dodecyl benzene sulfonic acid
Sodium), temperature is room temperature, raw material is put into stirring, rotary rpm control adds dense in 20000r/min, mixing time 15min
Spend is 10-6mol/dm3RGN-10 nonionic surfactants (Triton X-100) continue to stir at normal temperatures, revolve
Speed of walking around control is uniformly dispersed in 15000r/min, mixing time 15min, obtained nanometer diamond aqueous solution, nanometer diamond alkene
And stabilization does not precipitate.
3rd, blending and modifying
Nanometer diamond aqueous solution after activation decentralized processing is added in calcium carbonate by a certain percentage, in mixed at high speed
4h is stirred in machine, makrolon powder is added in and continues melt blended 5h (the roller barrel temperatures in opening rubber mixing machine：Preliminary roller is
175℃；Back roller is 165 DEG C).Water content in raw materials treated is less than 0.02%.
The makrolon material on smart mobile phone shell is prepared is applied, makrolon material is filled into injection molding machine
In, the raw material that temperature is 280 DEG C is molded into 0.4s in 95 DEG C of mold under 150Mpa pressure, back pressure selects 50bar,
The pressurize 1s under 85Mpa demoulds after then cooling down 7s, obtains phone housing.
Wherein, middling speed or high speed injection motding are selected during injection, the rotational speed of screw rod selects 70rpm during injection.Injection molding machine is each
Duan Wendu is：260 DEG C of nozzle temperature, 275 DEG C of first segment, 285 DEG C of second segment, 255 DEG C of blanking section.
Performance test：
1. bending strength：Refer to material and resist the not broken ability of bending.
Anti-reflecting bending strength determining is according to national standard GB/T 6569-86 (or ISO 14704-2000), and bending strength test is omnipotent
It is carried out in Material Testing Machine.Strip as test is 3 × 4 × 35 (mmmmmm).It is measured using three-point bending method, span
For 30mm, loading speed 0.5mm/min.5 strips of each data test, are then averaged.
Test result is as shown in Figure 1, influence of the nanometer diamond alkene to makrolon bending strength of Different adding amount is not
With, with the raising of nanometer diamond alkene additive amount, the bending strength of makrolon is first increased and is reduced afterwards, when additive amount reaches
During 8wt%, bending strength is up to 107Mpa, relative to the makrolon bending strength 80-85Mpa not strengthened, improves about
30%.And when nanometer diamond alkene additive amount increases to 10wt%, the bending strength of material declines instead.
2. hardness：Material locally resists the ability that hard object is pressed into its surface and is known as hardness.
Hardness is measured according to national standard GB/T 230.1-2004 using Rockwell apparatus.Sample is placed on firm
In plane, hardometer is held, pressing test coupon edge at least 12mm is smoothly pressed in pressure foot on sample, makes pressing vertical
Pressing in sample, until pressure foot and sample completely attach to when 1s in reading.It is measured firmly at a distance of the different location of at least 6mm in measuring point
Angle value 5 times, takes its average value.
Test result can improve the hardness of makrolon as shown in Fig. 2, adding a certain amount of nanometer diamond alkene, improve resistance to
Mill ability as the hardness of the raising phone housing of nanometer diamond alkene additive amount also improves therewith, when additive amount is 8wt%, reaches
To 189HRC, relative to the makrolon hardness 160HRC not strengthened, increase rate about 18% improves the wear-resisting of phone housing
Property.
3. impact strength：A kind of index of toughness of material is weighed, sample is normally defined and is rolled under the action of shock loading
During disconnected or jackknifing, energy that unit cross-sectional area is absorbed.
Notch impact strength test is tested according to ASTMD256 standards (or national standard ISO 180) using cantilever method.
Sample is clamped in shock machine, jaggy one, facing to pendulum edge, pendulum is discharged, makes its impact specimen, such as
Fruit sample does not destroy, then changes a heavier pendulum, until sample destroys.
Test result is as shown in figure 3, to add the notch shock that a certain amount of nanometer diamond alkene can improve makrolon strong
Degree.When additive amount is 8wt%, notch impact strength 88kJ/m2, relative to the makrolon notch impact strength do not strengthened
65 kJ/m2, promotion amplitude is about 35%, substantially increases the notch impact strength of makrolon phone housing, as nanometer is bored
Stone alkene content further improves, and notch impact strength amplification also tends to gently.
Claims (6)
1. the preparation method of a kind of makrolon material for smart mobile phone shell, which is characterized in that prepare nanometer diamond alkene
Aqueous solution, carry out blending and modifying with makrolon powder to get the makrolon material again after being sufficiently mixed with calcium carbonate,
Wherein, the mass ratio of 2-10wt% of the nanometer diamond alkene additive amount for makrolon powder, calcium carbonate and nanometer diamond alkene is 15-
18 :4-5；Mixture of the nanometer diamond alkene for following three kinds of different grain sizes nanometer diamond alkene, 50nm, 200nm, 250nm,
Mass ratio control is 1-2：3-4：4-5；When preparing the aqueous solution of nanometer diamond alkene, cleaned after nanometer diamond alkene is mixed,
It is dry, it is mixed to prepare nanometer diamond aqueous solution, institute with anion surfactant and nonionic surfactant again later
The solid content for stating nanometer diamond aqueous solution is 10-15%, and the anion surfactant is neopelex,
A concentration of 0.01-0.1g/cm3；The nonionic surfactant be Triton X-100, a concentration of 10-6-10- 5mol/dm3；Ultrasonic wave alkali cleaning, ultrasonic cleaning, pickling, ultrasonic water are carried out successively when being cleaned after the mixing of nanometer diamond alkene
It washes；During ultrasonic wave alkali cleaning, ultrasonic frequency be 30~35KHz, lye be concentration 11-14wt% NaOH solution, alkali wash water temperature
Between 45-55 DEG C, and Stirring, rotary rpm control are controlled in 25~35rpm, scavenging period in 25~35min；
During ultrasonic cleaning, ultrasonic frequency is 30~35KHz, and cleaning solution is deionized water, and Stirring during cleaning, rotation turns
Speed control is cleaned repeatedly in 20~25min, measurement supernatant liquor pH value until pH=7 in 15~25rpm, mixing time control；
During pickling, pickle is the dilution heat of sulfuric acid of concentration 15-35wt%, and temperature is room temperature, and Stirring during pickling, rotation turns
Speed control is controlled in 10~15rpm, mixing time in 10~15min；
During ultrasonic wave water washing, ultrasonic frequency is 30~35KHz, and water lotion is deionized water, and room temperature cleans, Stirring, rotation
Speed of walking around control is cleaned repeatedly in 10~15min, measurement supernatant liquor pH value until pH=7 in 15~25rpm, mixing time.
2. as described in claim 1 for the preparation method of the makrolon material of smart mobile phone shell, which is characterized in that institute
It states blending and modifying and melt blended 4-6h is carried out in opening rubber mixing machine, central roll barrel temperature is：170-180 DEG C of preliminary roller, back roller
160-170℃。
3. as described in claim 1 for the preparation method of the makrolon material of smart mobile phone shell, which is characterized in that
After adding in anion surfactant in dry nanometer diamond alkene, stirred under the speed of 15000-20000r/min under room temperature
10-20min；After adding in nonionic surfactant, continue to stir at normal temperatures, rotary rpm is controlled in 10000-15000r/
Min, mixing time 10-20min.
4. as described in claim 1 for the preparation method of the makrolon material of smart mobile phone shell, which is characterized in that institute
The drying stated is carried out using staged baking process, and heating rate is 2 DEG C/min, and room temperature is warming up to 70 DEG C, constant temperature heat preservation
30min is warming up to 90 DEG C, constant temperature heat preservation 30min, is warming up to 120 DEG C, and constant temperature heat preservation 60min is warming up to 300 DEG C, constant temperature heat preservation
It is for use to naturally cool to room temperature by 2h.
5. the makrolon material for smart mobile phone shell that any preparation methods of claim 1-4 obtain.
6. application of the makrolon material described in claim 5 on smart mobile phone shell is prepared, which is characterized in that by poly- carbonic acid
Ester material is filled into injection molding machine, is noted the raw material that temperature is 230-310 DEG C in 0.35-0.5s under 130-180Mpa pressure
It moulds in 80-110 DEG C of mold, back pressure selects 40-60bar, the pressurize 1s under 70-100Mpa, is taken off after then cooling down 5-10s
Mould obtains phone housing.
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| WO2024091247A1 (en) * | 2022-10-28 | 2024-05-02 | Hewlett-Packard Development Company, L.P. | Build material composition and thermally conductive agent for three-dimensional printing |
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Effective date of registration: 20190131 Address after: 476000 No. 96 Suzhou Road, Zhecheng County Industrial Agglomeration Area, Shangqiu City, Henan Province Patentee after: Shangqiu Huajing Diamond Co., Ltd. Address before: 450000 24 Dong Qing Street, hi tech Development Zone, Zhengzhou, Henan Patentee before: Zhengzhou Artificial Diamond and Produce Engineering and Technological Research Center Co., Ltd. |
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