CN109880276A - A kind of high-rate laser mark PBT/ABS composite material, preparation method and application - Google Patents
A kind of high-rate laser mark PBT/ABS composite material, preparation method and application Download PDFInfo
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Abstract
The present invention relates to double-colored keycap laser marking technical fields, more particularly to a kind of high-rate laser mark PBT/ABS composite material, preparation method and application, which includes the following raw material: PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, odour absorbents and function builder.The composite material laser marking speed is fast, and mark effect is good, high mechanical strength, it is anti-buy oil, wearability it is good, be suitable for double-colored keycap.
Description
Technical field
The present invention relates to double-colored keycap laser marking technical fields, and in particular to a kind of high-rate laser mark PBT/ABS is multiple
Condensation material, preparation method and application.
Background technique
Keyboard cover is shown above letter or number, and traditional mark mode is ink-printing techniques, although also can
Label, but number when our keyboard has used a period of time on keyboard and the color of letter can changes slowly
It is light, it can also become black on finger when we have beaten long with keyboard typing, very big puzzlement is brought to us.Ink
The cost of printing is also relatively high, also can cause environmental pollution.Therefore manufacturers have selected to use to can solve these problems
Laser marking machine to mark to keyboard cover, and existing laser marking keycap long processing time, and keycap is easy to appear after mark
Shadow, using being easy to appear phenomenon of buying oil shortly after.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, one of the objects of the present invention is to provide a kind of high speeds to swash
Light mark PBT/ABS composite material, the composite material laser marking speed is fast, and mark effect is good, high mechanical strength, it is anti-buy oil,
Wearability is good, is suitable for double-colored keycap.
The second object of the present invention is to provide a kind of preparation method of high-rate laser mark PBT/ABS composite material, be somebody's turn to do
Preparation method is easy to operate, easy to control, and high production efficiency, production cost is low, can be used for being mass produced.
The third object of the present invention is to provide a kind of application of high-rate laser mark PBT/ABS composite material, this is compound
Material is applied to double-colored keycap, and mark effect is clear, shows unshadowed, and double-colored keycap mark is in light effect bottom profiled more
Clearly, strong with the associativity of ABS keyboard pedestal, double-colored keycap with ABS keyboard pedestal is not easily to fall off separates.
An object of the present invention is achieved through the following technical solutions: a kind of high-rate laser mark PBT/ABS composite material,
Raw material including following parts by weight:
High-rate laser mark PBT/ABS composite material of the invention, with PBT resin (i.e. polybutylene terephthalate (PBT))
It is major ingredient with ABS resin (i.e. acrylonitrile-butadiene-styrene copolymer), by specified weight part and compatilizer, antioxidant, swashs
Light auxiliary agent, opacifier, odour absorbents and the mixing of function builder, composite material laser marking speed obtained is fast, mark
Effect is good, high mechanical strength, it is anti-buy oil, wearability it is good, be suitable for double-colored keycap.Wherein, PBT resin and ABS resin collaboration are made
With PBT resin improves anti-buying oil property and wearability, makes up the low wearability of ABS resin, prevents ABS resin fuel-displaced, improves product
Quality, ABS resin play the role of viscosity-adjusting agent in the system, and the low melt viscosity of PBT is avoided to lead to the composite material application
Molding flash when keycap is processed and formed a film, reduces difficulty of processing；Compared with nylon, heat resistance height, the good toughness of PBT resin are inhaled
Water rate is low, can effectively avoid because of the phenomenon that product size expands after water suction, electrical insulating property is strong；Compatilizer is made jointly with antioxidant
With avoid in composite material causes system stability poor, mechanical because being mixed into laser auxiliary agent, opacifier and function builder
Reduced performance；The odour absorbents of addition, it is high with PBT resin and the compatibility of ABS resin, and PBT resin and ABS tree can be eliminated
The peculiar smell of rouge is avoided human body from being generated using sucking peculiar smell when double-colored keycap made from composite material of the present invention uncomfortable, improves product
Quality.
Preferably, the inherent viscosity of the PBT resin is 0.7-1.2dL/g, and end carboxy concentration is 0.1-18 μ eq/g.
The inherent viscosity of PBT resin is controlled in 0.7-1.2dL/g, while selecting end carboxy concentration is 0.1-18 μ eq/g
PBT resin, improve the processing fluidity and toughness of composite material, be more advantageous to processing, avoid in damp and hot lower use due to
Hydrolysis causes the molecular weight of PBT resin to reduce, and then leads to the reduction of mechanical properties；If inherent viscosity is higher than 1.2dL/g, it is easy
Causing the problems such as flowing of the composite material is bad, filling is bad in shaping dies, difficulty of processing increases, and energy consumption increases, and
And the keycap smoothness of preparation is very poor, is easy to scrap.If inherent viscosity still can lower than 0.7dL/g even if joined ABS resin
The composite material is caused to be applied to molding flash when keycap processing forms a film because the melt viscosity of PBT resin is too low.
Preferably, the compatilizer is at least one of PE-G-MAH, MBS and POE-G-GMA.
Change the molecular structure of PBT resin using above-mentioned compatilizer, introduces soft segment to play toughening effect, make product
Can be more stable, there is excellent toughening effect, when few additive shows higher shock resistance；It is furthermore preferred that described
Compatilizer is that PE-G-MAH, MBS and POE-G-GMA are compounded with weight ratio 1-2:1-2:5, the grafting of the POE-G-GMA
Rate is 1%-1.2%, improves the cohesive force between PBT resin and ABS resin, improves system stability, can more improve mechanical performance
And processing fluidity, product manufacturing deficiency is reduced, processing is more advantageous to.PE-G-MAH is maleic anhydride grafted polyethylene；MBS is
Methyl methacrylate (M), the terpolymer of butadiene (B) and styrene (S)；POE-G-GMA is Glycidyl methacrylate
Glyceride grafted ethene-octene copolymer.
Preferably, the antioxidant is antioxidant 1010 and/or antioxidant S9228；The opacifier be titanium dioxide and/or
Lithopone.
The composite material can be made to reach anti-aging, color changeable effect using above-mentioned antioxidant, when extending the resistance to decomposition of composite material
Between.It is furthermore preferred that the antioxidant is that antioxidant 1010 and antioxidant S9228 are compounded with weight ratio 1:2-3, can prevent
Antioxidant effect is not achieved because high temperature decomposes antioxidant in composite material preparation process, and can be reduced composite material and squeezing out
It is thermally decomposed in journey, reducing material, small molecule is precipitated in the process, improves surface smoothness.
Shaded effect can be provided to the double-colored keycap of product using above-mentioned opacifier and to be in double-colored keycap mark bright
Light effect bottom profiled is apparent and translucency is strong.It is furthermore preferred that the titanium dioxide is rutile type titanium white.
Preferably, the laser auxiliary agent is the oxygenate and phosphorus of the oxide of tin, the oxide of antimony, the oxide of neodymium, bismuth
At least one of sour zirconium.
The composite material is set to be easier to mark using above-mentioned laser auxiliary agent, mark clarity is higher, unshadowed after mark, word
Body contour sharpness is high, and compared with common titanium oxide, cupric phosphate, the laser auxiliary agent mark speed that the present invention uses faster, is beaten
It is more preferable to mark effect.It is furthermore preferred that the oxygen of the oxide of tin, the oxide of antimony, the oxide of neodymium, bismuth can be used in the laser auxiliary agent
At least two in object and basic zirconium phosphate are closed to be mixed in varing proportions, it can be achieved that Multi Colour Lasers mark is for example white to carve black, black white, the black carving of carving
Gold etc. improves product selectivity.
Preferably, the odour absorbents are 88 TQ of Degussa TEGO Sorb PY.
Using above-mentioned odour absorbents, temperature tolerance is strong, avoids in composite processing or patternmaking process because of pyrolytic；
Its persistence for removing smell is high, can have an effect with active gases small molecule under normal conditions, it is made no longer to evaporate into week
In collarette border；On the other hand, odour absorbents promote the gas of small molecule to disperse and exhale in process, reduction pair
The capacity of weld mark position is conducive to micro-molecular gas and is smoothly discharged from the exhaust position of process, avoids and be vented
Cause composite material shadow occur due to micro-molecular gas is accumulated and to form hyperbar in position, is conducive to composite material and shows height
Light highlights surface, and process gives off micro-molecular gas, and the content of the composite material small molecular gas of preparation reduces, then plus
Upper PBT resin and the VOC content of ABS resin and auxiliary agent are low, are consumed the reduction of odour absorbents workload, active group
Must be slower, so that odor eliminating effect is more preferable.
Preferably, the function builder includes antibacterial agent and toner.
It is furthermore preferred that the function builder is antibacterial agent and toner with parts by weight 0.5-1:0.5-1 mixing, it is described anti-
Microbial inoculum is nano-silver ionic and/or nano zine oxide.Keyboard is contacted by human body for a long time, and bacterium easy to breed is good for human body
Kang Buli；Nano-silver ionic and/or nano zine oxide antibacterial agent is added, can efficiently kill Escherichia coli and Staphylococcus aureus
Bacterium, bacteriostasis rate have good compatible stability up to 99%, while with PBT/ABS system, do not influence the surface effect of keycap.
The second object of the present invention is achieved through the following technical solutions: above-mentioned high-rate laser mark PBT/ABS composite wood
The preparation method of material, includes the following steps:
(A1), PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, smell is weighed by weight to inhale
Agent and function builder are received, it is spare；
(A2), PBT resin and ABS resin are first premixed into 1-3min in a high speed mixer with diffusing oil, then with other originals
Material discharges after 1-3min is blended, and through double screw extruder extruding pelletization, high-rate laser mark PBT/ABS composite material is made.
The preparation method of high-rate laser mark PBT/ABS composite material of the present invention, the preparation method is easy to operate, controlling party
Just, high production efficiency, production cost is low, can be used for being mass produced.Wherein, in step (A2), PBT resin and ABS resin are first
It is premixed with diffusing oil, promotes the bonding between PBT resin and ABS resin, improved the uniformity, improve any surface finish of composite material
Degree and improvement demoulding.
Preferably, in the step (A2), double screw extruder each section of processing temperature since feeding section is respectively as follows:
170-190℃、190-210℃、190-210℃、200-220℃、200-220℃、200-220℃、210-230℃、210-230
DEG C, 210-230 DEG C, 220-240 DEG C, head temperature be 230-250 DEG C, screw speed 320-400r/min.
The present invention makes composite material obtained have excellent mechanical performance by the control area extrusion equipment Zhong Ge temperature,
And do not turn yellow, is not blistering, surfacing, glossiness are high.When each area when the temperature is excessively high, will affect antioxidant and odour absorbents
Effect, therefore melting temperature control is being lower than 250 DEG C.
The third object of the present invention is achieved through the following technical solutions: the high-rate laser mark PBT/ABS composite material
Applied to double-colored keycap.Compared with the keycap made from traditional ink-printing techniques, double-colored keycap of the invention is multiple with PBT, ABS
Condensation material is integrally distributed injection molding and is made using high-rate laser Mark technology, and more environmentally friendly, cost is lower, and mark is permanent not
It fades, mark effect is clear, shows unshadowed, and it is apparent that double-colored keycap mark is in light effect bottom profiled, with ABS keyboard
The associativity of button base is strong, double-colored keycap with ABS keyboard pedestal is not easily to fall off separates.
The beneficial effects of the present invention are: high-rate laser mark PBT/ABS composite material of the invention, the composite material swash
Light mark speed is fast, and mark effect is good, high mechanical strength, it is anti-buy oil, wearability it is good, be suitable for double-colored keycap.
The preparation method of high-rate laser mark PBT/ABS composite material of the present invention, the preparation method is easy to operate, controlling party
Just, high production efficiency, production cost is low, can be used for being mass produced.
The application of high-rate laser mark PBT/ABS composite material of the present invention, the composite material are applied to double-colored keycap, mark
Effect is clear, shows unshadowed, and it is apparent that double-colored keycap mark is in light effect bottom profiled, with ABS keyboard pedestal
Associativity it is strong, double-colored keycap with ABS keyboard pedestal is not easily to fall off separates.
Detailed description of the invention
Fig. 1 is the light effect picture that the embodiment of the present invention 1 is applied to double-colored keycap；
Fig. 2 is the light effect picture that comparative example 1 is applied to double-colored keycap；
Fig. 3 is the effect picture that the embodiment of the present invention 4 is applied to double-colored keycap；
Fig. 4 is the effect picture that comparative example 1 is applied to double-colored keycap.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to examples and drawings
Bright, the content that embodiment refers to not is limitation of the invention.
Embodiment 1
A kind of high-rate laser mark PBT/ABS composite material, the raw material including following parts by weight:
The inherent viscosity of the PBT resin is 1dL/g, and end carboxy concentration is 9 μ eq/g.
The compatilizer is that PE-G-MAH, MBS and POE-G-GMA are compounded with weight ratio 1.5:1.5:5, the POE-
The grafting rate of G-GMA is 1.1%.
The antioxidant is that antioxidant 1010 and antioxidant S9228 are compounded with weight ratio 1:2.5；The opacifier is
Rutile type titanium white.
The laser auxiliary agent is the oxide of tin.
The odour absorbents are 88 TQ of Degussa TEGO Sorb PY.
The function builder is antibacterial agent and toner with parts by weight 0.5-1:0.5-1 mixing, and the antibacterial agent is to receive
Nano silver ion.
The preparation method of above-mentioned high-rate laser mark PBT/ABS composite material, includes the following steps:
(A1), PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, smell is weighed by weight to inhale
Agent and function builder are received, it is spare；
(A2), PBT resin and ABS resin are first premixed into 2min in a high speed mixer with diffusing oil, then with other raw materials
It discharges after 2min is blended, through double screw extruder extruding pelletization, high-rate laser mark PBT/ABS composite material is made.
In the step (A2), double screw extruder each section of processing temperature since feeding section is respectively as follows: 180 DEG C, 200
DEG C, 200 DEG C, 210 DEG C, 210 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, 230 DEG C, head temperature is 240 DEG C, and screw speed is
360r/min。
The application of above-mentioned high-rate laser mark PBT/ABS composite material, the high-rate laser mark PBT/ABS composite wood
Material is applied to double-colored keycap.
Embodiment 2
A kind of high-rate laser mark PBT/ABS composite material, the raw material including following parts by weight:
The inherent viscosity of the PBT resin is 0.7dL/g, and end carboxy concentration is 0.1 μ eq/g.
The compatilizer is that PE-G-MAH, MBS and POE-G-GMA are compounded with weight ratio 1:1:5, the POE-G-
The grafting rate of GMA is 1%.
The antioxidant is that antioxidant 1010 and antioxidant S9228 are compounded with weight ratio 1:2；The opacifier is zinc
Barium white.
The laser auxiliary agent is the oxide of neodymium.
The odour absorbents are 88 TQ of Degussa TEGO Sorb PY.
The function builder is antibacterial agent and toner with parts by weight 0.5:0.5 mixing, and the antibacterial agent is nano oxygen
Change zinc.
The preparation method of above-mentioned high-rate laser mark PBT/ABS composite material, includes the following steps:
(A1), PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, smell is weighed by weight to inhale
Agent and function builder are received, it is spare；
(A2), PBT resin and ABS resin are first premixed into 1min in a high speed mixer with diffusing oil, then with other raw materials
It discharges after 1min is blended, through double screw extruder extruding pelletization, high-rate laser mark PBT/ABS composite material is made.
In the step (A2), double screw extruder each section of processing temperature since feeding section is respectively as follows: 170 DEG C, 190
DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, 210 DEG C, 210 DEG C, 210 DEG C, 220 DEG C, head temperature is 230 DEG C, and screw speed is
320r/min。
The application of above-mentioned high-rate laser mark PBT/ABS composite material, the high-rate laser mark PBT/ABS composite wood
Material is applied to double-colored keycap.
Embodiment 3
A kind of high-rate laser mark PBT/ABS composite material, the raw material including following parts by weight:
The inherent viscosity of the PBT resin is 1.2dL/g, and end carboxy concentration is 18 μ eq/g.
The compatilizer is that PE-G-MAH, MBS and POE-G-GMA are compounded with weight ratio 2:2:5, the POE-G-
The grafting rate of GMA is 1.2%.
The antioxidant is that antioxidant 1010 and antioxidant S9228 are compounded with weight ratio 1:3；The opacifier is titanium
White powder and the mixing of lithopone equal proportion.
The laser auxiliary agent is basic zirconium phosphate.
The odour absorbents are 88 TQ of Degussa TEGO Sorb PY.
The function builder is antibacterial agent and toner with parts by weight 1:1 mixing, and the antibacterial agent is nano-silver ionic
It is mixed with nano zine oxide equal proportion.
The preparation method of above-mentioned high-rate laser mark PBT/ABS composite material, includes the following steps:
(A1), PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, smell is weighed by weight to inhale
Agent and function builder are received, it is spare；
(A2), PBT resin and ABS resin are first premixed into 3min in a high speed mixer with diffusing oil, then with other raw materials
It discharges after 3min is blended, through double screw extruder extruding pelletization, high-rate laser mark PBT/ABS composite material is made.
In the step (A2), double screw extruder each section of processing temperature since feeding section is respectively as follows: 190 DEG C, 210
DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, 230 DEG C, 230 DEG C, 230 DEG C, 240 DEG C, head temperature is 250 DEG C, and screw speed is
400r/min。
The application of above-mentioned high-rate laser mark PBT/ABS composite material, the high-rate laser mark PBT/ABS composite wood
Material is applied to double-colored keycap.
Embodiment 4
A kind of high-rate laser mark PBT/ABS composite material, the raw material including following parts by weight:
The inherent viscosity of the PBT resin is 0.8dL/g, and end carboxy concentration is 4 μ eq/g.
The compatilizer is POE-G-GMA, and the grafting rate of the POE-G-GMA is 1%-1.2%.
The antioxidant is antioxidant 1010；The opacifier is lithopone.
The laser auxiliary agent is the oxide of tin, the oxygenate of bismuth and the mixing of basic zirconium phosphate equal proportion.
The odour absorbents are 88 TQ of Degussa TEGO Sorb PY.
The function builder is antibacterial agent and toner with parts by weight 0.8:0.6 mixing, and the antibacterial agent is nano silver
Ion.
The preparation method of above-mentioned high-rate laser mark PBT/ABS composite material, includes the following steps:
(A1), PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, smell is weighed by weight to inhale
Agent and function builder are received, it is spare；
(A2), PBT resin and ABS resin are first premixed into 2.5min in a high speed mixer with diffusing oil, then with other originals
Material discharges after 1.5min is blended, and through double screw extruder extruding pelletization, high-rate laser mark PBT/ABS composite material is made.
In the step (A2), double screw extruder each section of processing temperature since feeding section is respectively as follows: 175 DEG C, 195
DEG C, 195 DEG C, 205 DEG C, 215 DEG C, 215 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 230 DEG C, head temperature is 240 DEG C, and screw speed is
380r/min。
The application of above-mentioned high-rate laser mark PBT/ABS composite material, the high-rate laser mark PBT/ABS composite wood
Material is applied to double-colored keycap.
Comparative example 1
This comparative example the difference from embodiment 1 is that:
A kind of laser marking PA6/ABS composite material, the raw material including following parts by weight:
The laser auxiliary agent, opacifier, odour absorbents and function builder are same as Example 1.
The preparation method of above-mentioned laser marking PA6/ABS composite material is identical as the preparation method of embodiment 1.
Comparative example 2
This comparative example the difference from embodiment 1 is that: the compatilizer be PE-G-ST.
5 performance test of embodiment
(I) by composite material made from embodiment 1 and comparative example 1, integrally distribution is molded into keycap, then uses laser marking
The double-colored keycap containing letter is made, is assembled into after keyboard that display and contrast effect, effect picture are as shown in Figs. 1-2 under light.By
Fig. 1-2 comparison, it is clear that the letter of Fig. 1 is free of shadow, and mark effect is good, clear-cut, and the letter b of Fig. 2 contains shadow, effect compared with
Difference.
(II) by composite material made from embodiment 4 and comparative example 1, integrally distribution is molded into keycap, then uses laser marking
The double-colored keycap containing letter is made, is assembled into after keyboard and observes letter and contrast effect, the effect picture of embodiment 4 as shown in figure 3,
The effect picture of comparative example 1 is as shown in Figure 4.Compared by Fig. 3-4, it is clear that the alphabetical D of Fig. 3 be it is silent, it is clear-cut, and the word of Fig. 4
Female D is obviously open, and mark effect is poor.
(III) composite material made from Example 1-4 and comparative example 1-2, tests it using ASTM-D638 testing standard
Tensile strength, units MPa；Its notch impact strength, unit K J/m are tested using ASTM-D6110 testing standard2；Using ASTM-
D790 testing standard tests its bending modulus, units MPa；Its melt index, unit are tested using ASTM-D1238 testing standard
g/10min；By composite material, integrally distribution is molded into double-colored keycap, then uses laser marking machine with the mark speed of 6000mm/s
The double-colored keycap containing letter is made, observes the appearance of the appearance and keycap at mark, is observed after standing 30d under the conditions of 50 DEG C
Whether keycap is bought oil and is recorded, as a result as shown in table 1 below:
Table 1
By upper table 1 it is found that compared with comparative example 1, the tensile strength of the present embodiment 1 influences less, but notch shock is strong
Degree difference is larger, and the key cap surface of embodiment 1 is bright and clean, mark is clear-cut, unshadowed, realizes the mark speed of 6000mm/s
Degree, mark is high-efficient, and anti-effect of buying oil is good.Compared with comparative example 2, the specific compatilizer phase of the present embodiment 1 in specific proportions
Mutually compounding, the bright and clean effect of key cap surface are obvious.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart under the premise of present inventive concept it is any obviously replace it is within the scope of the present invention.
Claims (10)
1. a kind of high-rate laser mark PBT/ABS composite material, it is characterised in that: the raw material including following parts by weight:
2. a kind of high-rate laser mark PBT/ABS composite material according to claim 1, it is characterised in that: the PBT tree
The inherent viscosity of rouge is 0.7-1.2dL/g, and end carboxy concentration is 0.1-18 μ eq/g.
3. a kind of high-rate laser mark PBT/ABS composite material according to claim 1, it is characterised in that: described compatible
Agent is at least one of PE-G-MAH, MBS and POE-G-GMA.
4. a kind of high-rate laser mark PBT/ABS composite material according to claim 1, it is characterised in that: the antioxygen
Agent is antioxidant 1010 and/or antioxidant S9228；The opacifier is titanium dioxide and/or lithopone.
5. a kind of high-rate laser mark PBT/ABS composite material according to claim 1, it is characterised in that: the laser
Auxiliary agent is at least one of the oxide of tin, the oxide of antimony, the oxide of neodymium, the oxygenate of bismuth and basic zirconium phosphate.
6. a kind of high-rate laser mark PBT/ABS composite material according to claim 1, it is characterised in that: the smell
Absorbent is 88 TQ of Degussa TEGO Sorb PY.
7. a kind of high-rate laser mark PBT/ABS composite material according to claim 1, it is characterised in that: the function
Builder includes antibacterial agent and toner.
8. a kind of preparation method of the high-rate laser mark PBT/ABS composite material as described in claim 1-7 any one,
It is characterized in that: including the following steps:
(A1), PBT resin, ABS resin, compatilizer, antioxidant, laser auxiliary agent, opacifier, odour absorbents are weighed by weight
It is spare with function builder；
(A2), PBT resin and ABS resin are first premixed into 1-3min in a high speed mixer with diffusing oil, then total with other raw materials
It discharges after mixed 1-3min, through double screw extruder extruding pelletization, high-rate laser mark PBT/ABS composite material is made.
9. a kind of preparation method of high-rate laser mark PBT/ABS composite material according to claim 8, feature exist
In: in the step (A2), double screw extruder each section of processing temperature since feeding section is respectively as follows: 170-190 DEG C, 190-
210℃、190-210℃、200-220℃、200-220℃、200-220℃、210-230℃、210-230℃、210-230℃、
220-240 DEG C, head temperature is 230-250 DEG C, screw speed 320-400r/min.
10. a kind of application of the high-rate laser mark PBT/ABS composite material as described in claim 1-7 any one, special
Sign is: the high-rate laser mark PBT/ABS composite material is applied to double-colored keycap.
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