CN104356322A - Chemically modified waste PC/ABS alloy material and preparation method thereof - Google Patents
Chemically modified waste PC/ABS alloy material and preparation method thereof Download PDFInfo
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- CN104356322A CN104356322A CN201410696088.5A CN201410696088A CN104356322A CN 104356322 A CN104356322 A CN 104356322A CN 201410696088 A CN201410696088 A CN 201410696088A CN 104356322 A CN104356322 A CN 104356322A
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Abstract
The invention belongs to the field of the high polymer materials and in particular relates to a chemically modified waste PC/ABS alloy material and a preparation method thereof. The chemically modified waste PC/ABS alloy material is prepared by melting and mixing the following materials in parts by weight together: 95-99 parts of waste PC/ABS alloy, 0.02-5 parts of compound containing vinyl and epoxy group, and 0.01-0.2 part of aromatic peroxide, wherein the notch impact strength of the waste PC/ABS alloy is lower than 10kJ/m<2>. The modified material having excellent mechanical properties is prepared by modifying the waste PC/ABS alloy with the compound containing vinyl and epoxy group and the aromatic peroxide. Experimental results indicate that the modified waste PC/ABS alloy material has the notch impact strength higher than 10kJ/m<2>, the tensile strength higher than 44MPa, the bending strength higher than 63MPa and the bending modulus higher than 2300MPa, and the melt mass-flow rate is lower than 16g/10min.
Description
Technical field
The invention belongs to polymeric material field, waste and old PC/ABS alloy material particularly relating to a kind of chemical modification and preparation method thereof.
Background technology
The polymkeric substance of polycarbonate (PC) to be severe structural unit be carbonate.The advantages such as PC has that shock strength is high, creep resistance, good stability of the dimension, heat-resisting, transparent, water-intake rate is low, nontoxic and joint behavior is excellent, electric, automotive industry, medicine equipment, building and lighting apparatus and many high-technology fields of many uses.But PC also comes with some shortcomings, as large in melt viscosity, machine-shaping is difficult, easily produces stress cracking, not solvent resistant.Thus make the application of PC receive a definite limitation.
ABS resin is the material of a kind of performance between engineering plastics and general-purpose plastics, and it has good shock-resistance and processing fluidity, and price is also relatively more cheap, is thus widely used.But because its thermotolerance, weather resistance are poor, mechanical property is not ideal enough and limit application.
The PC/ABS alloy being raw material with PC and ABS is a kind of important engineering plastic alloy, and this material not only has good processability, also has good low-temperature impact-resistant performance and higher heat-drawn wire and light stability.Compared with PC, PC/ABS alloy melt viscosity is low, good processability, has higher shock strength.Compared with ABS, heat-drawn wire, the dewaterability of PC/ABS alloy are obtained for improvement, thus can better apply and the manufactures such as automobile, electronics, office equipment.
At present, PC/ABS alloy is output and the most salable commercialization engineering plastic alloy, is also to discard to measure maximum commercialization engineering plastic alloy simultaneously.The waste of a large amount of PC/ABS alloy not only causes the pollution of environment, also creates the invalid of resource and piles up.
For the disposal of the waste of PC/ABS alloy, optimal mode is exactly recycle the PC/ABS alloy material in waste, but because the mechanical property of the PC/ABS alloy in PC/ABS alloy waste gurry is generally poor, after causing it to reclaim, be difficult to second stage employ.
Summary of the invention
In view of this, waste and old PC/ABS alloy material that the object of the present invention is to provide a kind of chemical modification and preparation method thereof, the waste and old PC/ABS alloy material good mechanical property of chemical modification provided by the invention.
The invention provides a kind of waste and old PC/ABS alloy modification material, be made up through melt blending of material, with weight parts, described material comprises:
Waste and old PC/ABS alloy 95 ~ 99 parts;
Containing the compound 0.02 ~ 5 part of vinyl and epoxy group(ing);
Aromatic series superoxide 0.01 ~ 0.2 part;
The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
Preferably, the described compound containing vinyl and epoxy group(ing) is glycidyl methacrylate.
Preferably, described aromatic series superoxide is dicumyl peroxide.
Preferably, the tensile strength of described waste and old PC/ABS alloy is lower than 44MPa.
Preferably, the flexural strength of described waste and old PC/ABS alloy is lower than 63MPa.
Preferably, the modulus in flexure of described waste and old PC/ABS alloy is lower than 2300MPa.
Preferably, the melt mass flow rate of described waste and old PC/ABS alloy is higher than 16g/10min.
The invention provides a kind of waste and old PC/ABS alloy modification material preparation method, comprise the following steps:
The waste and old PC/ABS alloy of 95 ~ 99 weight part, 0.02 ~ 5 weight part contain compound and 0.01 ~ 0.2 parts by weight of aromatic superoxide melt blending of vinyl and epoxy group(ing), obtain waste and old PC/ABS alloy modification material;
The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
Preferably, the temperature of described melt blending is 180 ~ 250 DEG C.
Preferably, described waste and old PC/ABS alloy, containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide melt blending before, drying is carried out to waste and old PC/ABS alloy.
Compared with prior art, waste and old PC/ABS alloy material that the invention provides a kind of chemical modification and preparation method thereof.The waste and old PC/ABS alloy material of chemical modification provided by the invention is waste and old PC/ABS alloy modification material, and this is material modified is made up through melt blending of material, and with weight parts, described material comprises: waste and old PC/ABS alloy 95 ~ 99 parts; Containing the compound 0.02 ~ 5 part of vinyl and epoxy group(ing); Aromatic series superoxide 0.01 ~ 0.2 part; The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.The present invention carries out modification containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide to waste and old PC/ABS alloy by using, and prepares the material modified of satisfactory mechanical property.Experimental result shows, the notched Izod impact strength of the waste and old PC/ABS alloy material of chemical modification provided by the invention is higher than 10kJ/m
2, tensile strength is higher than 44MPa, and flexural strength is higher than 63MPa, and modulus in flexure is higher than 2300MPa, and melt mass flow rate is lower than 16g/10min.
Embodiment
Be clearly and completely described the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of waste and old PC/ABS alloy modification material, be made up through melt blending of material, with weight parts, described material comprises:
Waste and old PC/ABS alloy 95 ~ 99 parts;
Containing the compound 0.02 ~ 5 part of vinyl and epoxy group(ing);
Aromatic series superoxide 0.01 ~ 0.2 part;
The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
Waste and old PC/ABS alloy modification material provided by the invention is made up through melt blending of material.Described material comprises waste and old PC/ABS alloy, containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide.Wherein, the notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
In an embodiment provided by the invention, the notched Izod impact strength of described waste and old PC/ABS alloy is less than or equal to 9.05kJ/m
2.
In an embodiment provided by the invention, the tensile strength of described waste and old PC/ABS alloy is lower than 44MPa; In another embodiment provided by the invention, the tensile strength of described waste and old PC/ABS alloy is less than or equal to 40.26MPa.
In an embodiment provided by the invention, the flexural strength of described waste and old PC/ABS alloy is lower than 63MPa; In another embodiment provided by the invention, the flexural strength of described waste and old PC/ABS alloy is less than or equal to 53.44MPa.
In an embodiment provided by the invention, the modulus in flexure of described waste and old PC/ABS alloy is lower than 2300MPa; In another embodiment provided by the invention, the modulus in flexure of described waste and old PC/ABS alloy is lower than 2200MPa; In other embodiments provided by the invention, the modulus in flexure of described waste and old PC/ABS alloy is less than or equal to 2113.93MPa.
In an embodiment provided by the invention, the melt mass flow rate of described waste and old PC/ABS alloy is higher than 16g/10min; In another embodiment provided by the invention, the melt mass flow rate of described waste and old PC/ABS alloy is more than or equal to 18.1g/10min.
The source of the present invention to described waste and old PC/ABS alloy is not particularly limited, and can be from PC/ABS alloy material products waste, reclaim the waste and old PC/ABS alloy reclaimed materials obtained.
In the present invention, the described compound containing vinyl and epoxy group(ing) is preferably glycidyl methacrylate.Be 95 ~ 99 parts by weight with the content of PC/ABS alloy waste and old in described material, the content of the described compound containing vinyl and epoxy group(ing) is 0.02 ~ 5 weight part, is preferably 0.2 ~ 4 weight part.
In the present invention, described aromatic series superoxide is preferably dicumyl peroxide.Be 95 ~ 99 parts by weight with the content of PC/ABS alloy waste and old in described material, described aromatic series peroxide level is 0.01 ~ 0.2 weight part, is preferably 0.1 ~ 0.2 weight part.
Waste and old PC/ABS alloy modification material provided by the invention by containing vinyl and epoxy group(ing) compound and aromatic series superoxide and waste and old PC/ABS alloy molten is blended makes, there is good mechanical property.In addition, the compound containing vinyl and epoxy group(ing) used in a preferred embodiment of the invention is glycidyl methacrylate, and glycidyl methacrylate is nontoxic additive, can not damage HUMAN HEALTH and contaminate environment in use procedure.Experimental result shows, the notched Izod impact strength of waste and old PC/ABS alloy modification material provided by the invention is higher than 10kJ/m
2, tensile strength is higher than 44MPa, and flexural strength is higher than 60MPa, and modulus in flexure is higher than 2300MPa, and melt mass flow rate is lower than 16g/10min.
The invention provides a kind of waste and old PC/ABS alloy modification material preparation method, comprise the following steps:
The waste and old PC/ABS alloy of 95 ~ 99 weight part, 0.02 ~ 5 weight part contain compound and 0.01 ~ 0.2 parts by weight of aromatic superoxide melt blending of vinyl and epoxy group(ing), obtain waste and old PC/ABS alloy modification material;
The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
In preparation method provided by the invention, first by waste and old PC/ABS alloy, containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide melt blending.The notched Izod impact strength of wherein said waste and old PC/ABS alloy is lower than 10kJ/m
2.
In an embodiment provided by the invention, the notched Izod impact strength of described waste and old PC/ABS alloy is less than or equal to 9.05kJ/m
2.
In an embodiment provided by the invention, the tensile strength of described waste and old PC/ABS alloy is lower than 44MPa; In another embodiment provided by the invention, the tensile strength of described waste and old PC/ABS alloy is less than or equal to 40.26MPa.
In an embodiment provided by the invention, the flexural strength of described waste and old PC/ABS alloy is lower than 63MPa; In another embodiment provided by the invention, the flexural strength of described waste and old PC/ABS alloy is less than or equal to 53.44MPa.
In an embodiment provided by the invention, the modulus in flexure of described waste and old PC/ABS alloy is lower than 2300MPa; In another embodiment provided by the invention, the modulus in flexure of described waste and old PC/ABS alloy is lower than 2200MPa; In other embodiments provided by the invention, the modulus in flexure of described waste and old PC/ABS alloy is less than or equal to 2113.93MPa.
In an embodiment provided by the invention, the melt mass flow rate of described waste and old PC/ABS alloy is higher than 16g/10min; In another embodiment provided by the invention, the melt mass flow rate of described waste and old PC/ABS alloy is more than or equal to 18.1g/10min.
The source of the present invention to described waste and old PC/ABS alloy is not particularly limited, and can be from PC/ABS alloy material products waste, reclaim the waste and old PC/ABS alloy reclaimed materials obtained.
In the present invention, the described compound containing vinyl and epoxy group(ing) is preferably glycidyl methacrylate; Described aromatic series superoxide is preferably dicumyl peroxide.
Described waste and old PC/ABS alloy, be 95 ~ 99:0.02 ~ 5:0.01 ~ 0.2 containing vinyl and the compound of epoxy group(ing) and the mass ratio of aromatic series superoxide.The temperature of described melt blending is preferably 180 ~ 250 DEG C, is more preferably 185 ~ 245 DEG C.The present invention to described waste and old PC/ABS alloy, to carry out melt blending containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide time equipment used be not particularly limited, be preferably twin screw extruder well known to those skilled in the art.In the present invention, in described twin screw extruder operational process, from hopper to head, each section of temperature is preferably 210 DEG C, 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 230 DEG C, 220 DEG C, 200 DEG C, 185 DEG C respectively; The screw speed of described twin screw extruder is preferably 75r/min.
In the present invention, preferably described waste and old PC/ABS alloy, containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide melt blending before, drying is carried out to waste and old PC/ABS.The temperature of described drying is preferably 60 ~ 120 DEG C, is more preferably 80 ~ 100 DEG C; The time of described drying is preferably 4 ~ 10h, is more preferably 6 ~ 8h.When the present invention carries out drying to waste and old PC/ABS alloy, equipment used is not particularly limited, and is preferably air dry oven well known to those skilled in the art.In an embodiment provided by the invention, preferably by after mixing with dried waste and old PC/ABS alloy containing the compound of vinyl and epoxy group(ing), aromatic series superoxide, then carry out melt blending.In the present invention, before raw materials melt is blended, drying is carried out to waste and old PC/ABS alloy, can effectively prevent the moisture content contained in waste and old PC/ABS alloy from volatilizing in melt blending process, thus avoid raw material in melt blending process because moisture content volatilizees the thermal destruction and hydrolysis caused.
In the present invention, preferably before described waste and old PC/ABS alloy carries out drying, described waste and old PC/ABS alloy is pulverized, obtain waste and old PC/ABS superalloy sheet material.The length of described waste and old PC/ABS superalloy sheet material is preferably less than 12mm, and width is preferably less than 12mm, and thickness is preferably less than 2mm.
After melt blending terminates, the waste and old PC/ABS alloy modification material melt obtained, described melt, successively through granulation, drying and injection moulding, obtains waste and old PC/ABS alloy modification material.The temperature of described drying is preferably 60 ~ 120 DEG C, is more preferably 80 ~ 100 DEG C; The time of described drying is preferably 4 ~ 10h, is more preferably 6 ~ 8h; The equipment of described drying is preferably air dry oven.The temperature of described injection moulding is preferably 190 ~ 240 DEG C, is more preferably 190 ~ 230 DEG C; The equipment of described injection moulding is preferably injection moulding machine.In the present invention, in described injection moulding machine operational process, from hopper to head, each section of temperature is preferably 190 DEG C, 210 DEG C, 230 DEG C, 220 DEG C respectively.
Preparation method provided by the invention can prepare the waste and old PC/ABS alloy modification material of good mechanical performance, solves the bad mechanical property of waste and old PC/ABS alloy, is difficult to the problem of second stage employ.
For the purpose of clearer, be described in detail below by following examples.
Embodiment 1
Waste and old PC/ABS alloy powder is broken into length and is less than 12mm, width is less than 12mm, and thickness is less than the sheet material of 2mm, is then placed in air dry oven by waste and old PC/ABS alloy, dry 6h at 80 DEG C.By dried to 0.2g glycidyl methacrylate, 0.2g dicumyl peroxide and 99.6g waste and old PC/ABS alloy Homogeneous phase mixing, join twin screw extruder, arranging twin screw extruder each section of temperature from hopper to head is: 210 DEG C, 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 230 DEG C, 220 DEG C, 200 DEG C, 185 DEG C, screw speed is 85r/min.Waste and old PC/ABS alloy, glycidyl methacrylate and dicumyl peroxide are extruded after melt blending in twin screw extruder, extrude the extruded stock obtained and obtain particulate material after granulation.Particulate material is placed in air dry oven, dry 6h at 80 DEG C.Pour in injection moulding machine by dried particulate material, arranging injection moulding machine each section of temperature from hopper to head is: 190 DEG C, 210 DEG C, 230 DEG C, 220 DEG C.After injection moulding terminates, obtain waste and old PC/ABS alloy modification material.
In the present embodiment, the waste and old PC/ABS alloy used comes from PC/ABS alloy material products waste the waste and old PC/ABS alloy reclaimed materials reclaiming and obtain, and the notched Izod impact strength of described waste and old PC/ABS alloy is 9.05kJ/m
2, tensile strength is 40.26MPa, and flexural strength is 53.44MPa, and modulus in flexure is 2113.93MPa, and melt mass flow rate (MFR) is 18.1g/10min.
Embodiment 2
Waste and old PC/ABS alloy powder is broken into length and is less than 12mm, width is less than 12mm, and thickness is less than the sheet material of 2mm, is then placed in air dry oven by waste and old PC/ABS alloy, dry 6h at 80 DEG C.By dried to 1g glycidyl methacrylate, 0.2g dicumyl peroxide and 98.8g waste and old PC/ABS alloy Homogeneous phase mixing, join twin screw extruder, arranging twin screw extruder each section of temperature from hopper to head is: 210 DEG C, 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 230 DEG C, 220 DEG C, 200 DEG C, 185 DEG C, screw speed is 85r/min.Waste and old PC/ABS alloy, glycidyl methacrylate and dicumyl peroxide are extruded after melt blending in twin screw extruder, extrude the extruded stock obtained and obtain particulate material after granulation.Particulate material is placed in air dry oven, dry 6h at 80 DEG C.Pour in injection moulding machine by dried particulate material, arranging injection moulding machine each section of temperature from hopper to head is: 190 DEG C, 210 DEG C, 230 DEG C, 220 DEG C.After injection moulding terminates, obtain waste and old PC/ABS alloy modification material.
In the present embodiment, the waste and old PC/ABS alloy used is identical with embodiment 1.
Embodiment 3
Waste and old PC/ABS alloy powder is broken into length and is less than 12mm, width is less than 12mm, and thickness is less than the sheet material of 2mm, is then placed in air dry oven by waste and old PC/ABS alloy, dry 6h at 80 DEG C.By dried to 2g glycidyl methacrylate, 0.2g dicumyl peroxide and 97.8g waste and old PC/ABS alloy Homogeneous phase mixing, join twin screw extruder, arranging twin screw extruder each section of temperature from hopper to head is: 210 DEG C, 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 230 DEG C, 220 DEG C, 200 DEG C, 185 DEG C, screw speed is 85r/min.Waste and old PC/ABS alloy, glycidyl methacrylate and dicumyl peroxide are extruded after melt blending in twin screw extruder, extrude the extruded stock obtained and obtain particulate material after granulation.Particulate material is placed in air dry oven, dry 6h at 80 DEG C.Pour in injection moulding machine by dried particulate material, arranging injection moulding machine each section of temperature from hopper to head is: 190 DEG C, 210 DEG C, 230 DEG C, 220 DEG C.After injection moulding terminates, obtain waste and old PC/ABS alloy modification material.
In the present embodiment, the waste and old PC/ABS alloy used is identical with embodiment 1.
Embodiment 4
Waste and old PC/ABS alloy powder is broken into length and is less than 12mm, width is less than 12mm, and thickness is less than the sheet material of 2mm, is then placed in air dry oven by waste and old PC/ABS alloy, dry 6h at 80 DEG C.By dried to 4g glycidyl methacrylate, 0.2g dicumyl peroxide and 95.8g waste and old PC/ABS alloy Homogeneous phase mixing, join twin screw extruder, arranging twin screw extruder each section of temperature from hopper to head is: 210 DEG C, 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 230 DEG C, 220 DEG C, 200 DEG C, 185 DEG C, screw speed is 85r/min.Waste and old PC/ABS alloy, glycidyl methacrylate and dicumyl peroxide are extruded after melt blending in twin screw extruder, extrude the extruded stock obtained and obtain particulate material after granulation.Particulate material is placed in air dry oven, dry 6h at 80 DEG C.Pour in injection moulding machine by dried particulate material, arranging injection moulding machine each section of temperature from hopper to head is: 190 DEG C, 210 DEG C, 230 DEG C, 220 DEG C.After injection moulding terminates, obtain waste and old PC/ABS alloy modification material.
In the present embodiment, the waste and old PC/ABS alloy used is identical with embodiment 1.
Embodiment 5
Waste and old PC/ABS alloy modification material property detects
Detect embodiment 1, embodiment 2, embodiment 3 and embodiment 4 respectively and obtain the notched Izod impact strength of material modified and waste and old PC/ABS alloy reclaimed materials, tensile strength, flexural strength, modulus in flexure and melt mass flow rate.Wherein, notched Izod impact strength is tested according to standard method of test GB1843-2008; Tensile strength is tested according to standard method of test GB/T1040-2006; Flexural strength and modulus in flexure are tested according to standard method of test GB/T 9341-2008; Melt mass flow rate is tested according to standard method of test ASTM D1238.Test result is as shown in table 1.
Table 1 waste and old PC/ABS alloy modification material property detected result
Can be found out by table 1, the mechanical property of waste and old PC/ABS alloy modification material provided by the invention is obviously better than waste and old PC/ABS alloy reclaimed materials.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a waste and old PC/ABS alloy modification material, is made up through melt blending of material, and with weight parts, described material comprises:
Waste and old PC/ABS alloy 95 ~ 99 parts;
Containing the compound 0.02 ~ 5 part of vinyl and epoxy group(ing);
Aromatic series superoxide 0.01 ~ 0.2 part;
The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
2. according to claim 1 material modified, it is characterized in that, the described compound containing vinyl and epoxy group(ing) is glycidyl methacrylate.
3. according to claim 1 material modified, it is characterized in that, described aromatic series superoxide is dicumyl peroxide.
4. according to claim 1 material modified, it is characterized in that, the tensile strength of described waste and old PC/ABS alloy is lower than 44MPa.
5. according to claim 1 material modified, it is characterized in that, the flexural strength of described waste and old PC/ABS alloy is lower than 63MPa.
6. according to claim 1 material modified, it is characterized in that, the modulus in flexure of described waste and old PC/ABS alloy is lower than 2300MPa.
7. according to claim 1 material modified, it is characterized in that, the melt mass flow rate of described waste and old PC/ABS alloy is higher than 16g/10min.
8. a waste and old PC/ABS alloy modification material preparation method, comprises the following steps:
The waste and old PC/ABS alloy of 95 ~ 99 weight part, 0.02 ~ 5 weight part contain compound and 0.01 ~ 0.2 parts by weight of aromatic superoxide melt blending of vinyl and epoxy group(ing), obtain waste and old PC/ABS alloy modification material;
The notched Izod impact strength of described waste and old PC/ABS alloy is lower than 10kJ/m
2.
9. preparation method according to claim 8, is characterized in that, the temperature of described melt blending is 180 ~ 250 DEG C.
10. preparation method according to claim 8, is characterized in that, described waste and old PC/ABS alloy, containing the compound of vinyl and epoxy group(ing) and aromatic series superoxide melt blending before, drying is carried out to waste and old PC/ABS alloy.
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