CN104031375B - A kind of PC/PMMA Alloy And Preparation Method - Google Patents
A kind of PC/PMMA Alloy And Preparation Method Download PDFInfo
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- CN104031375B CN104031375B CN201410282542.2A CN201410282542A CN104031375B CN 104031375 B CN104031375 B CN 104031375B CN 201410282542 A CN201410282542 A CN 201410282542A CN 104031375 B CN104031375 B CN 104031375B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Abstract
A kind of PC/PMMA Alloy And Preparation Method, belongs to technical field of polymer materials.It is using St/MAH-g-MMA graft copolymer as main properties-correcting agent, alloy is prepared with PC is blended, is it by the component of following weight percentage: PC50-80%? St/MAH-g-MMA graft copolymer 15-45% oxidation inhibitor 2% light diffusing agent 3% is extruding pelletization in mixing, twin screw extruder, obtained PC/PMMA alloy.The present invention is by adopting the feed ratio limited, with St/MAH-g-MMA graft copolymer for properties-correcting agent, PC/PMMA alloy is obtained by twin-screw extrusion, strengthen the physicals of alloy, effectively put forward heavy alloyed tensile strength, surface hardness, heat-drawn wire and glossiness, the PC/PMMA alloy obtained can be widely used in the fields such as engineering materials, electrical equipment display, packaging.
Description
Technical field
The invention belongs to technical field of polymer materials, particularly relate to a kind of PC/PMMA Alloy And Preparation Method.
Background technology
Polycarbonate (Polycarbonate, PC) is a kind of amorphous thermoplastic's engineering plastics of excellent property, and polycarbonate water white transparency, heat-resisting, shock resistance, good dimension stability, have good mechanical property in common use temperature.But unmodified polycarbonate still has weak point, show that processing fluidity is not enough, stress crack resistant is poor, and chemical resistance is poor, wears no resistance, and surface hardness and toughness such as can not to take into account at the shortcoming.
Polycarbonate price is lower relatively for polymethylmethacrylate (Polymethylmethacrylate, PMMA), blended with PC, can improve the crocking resistance of PC, solvent resistance and processing characteristics etc., and PC/PMMA alloy has special pearly-lustre color simultaneously.
Current PC/PMMA reasonable offer employing phenylethylene/maleic anhydrides etc. as compatilizer, then add PMMA, blended preparation PC/PMMA alloy.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide good, the surperficial scrape resistant of a kind of high rigidity, chemical proofing, stable mechanical performance, processing environment good, there is the PC/PMMA Alloy And Preparation Method of pearly-lustre color.
Described a kind of PC/PMMA alloy, is characterized in that using St/MAH-g-MMA graft copolymer as main properties-correcting agent, and prepare alloy with PC is blended, it comprises the component of following weight percentage:
PC50-80%St/MAH-g-MMA graft copolymer 15-45% oxidation inhibitor 2% light diffusing agent 3%.
Described a kind of PC/PMMA alloy, is characterized in that the component comprising following weight percentage:
PC60-75%St/MAH-g-MMA graft copolymer 20-35% oxidation inhibitor 2% light diffusing agent 3%.
Described a kind of PC/PMMA alloy, is characterized in that described oxidation inhibitor is antioxidant 1010, and described light diffusing agent is machine silicon light diffusing agent KMP-590.
Described a kind of PC/PMMA alloy, is characterized in that described St/MAH-g-MMA graft copolymer structure formula is as follows:
Wherein 1≤m≤10,20≤n≤50,20≤l≤50, its weight-average molecular weight is 40000 ~ 100000, and the preparation method of this St/MAH-g-MMA graft copolymer comprises the steps:
1) in the solution of the DMF of methyl methacrylate, initiator and RAFT reagent is added, carry out RAFT living polymerization, obtain the polymethylmethacrylate that end is thioester substrate, the molar ratio of described initiator, RAFT reagent and methyl methacrylate is 1:5:200-300;
2) be sulfydryl by the polymethylmethacrylate that obtains in step 1) by ammonia solution reduction end thioester substrate, obtain the polymethylmethacrylate that end is sulfydryl;
3) by step 2) end that obtains is that Michael reaction is carried out in the polymethylmethacrylate of sulfydryl and allyl methacrylate(AMA) addition, obtains the PMMA macromonomer that end is unsaturated double-bond;
4) step 3) obtains PMMA macromonomer that end is unsaturated double-bond and vinylbenzene, maleic anhydride, obtains St/MAH-g-MMA graft copolymer.
Described a kind of PC/PMMA alloy, is characterized in that the initiator described in step 1) is AIBN or BPO.
Described a kind of PC/PMMA alloy, the RAFT reagent that it is characterized in that described in step 1) is any one in dithiobenzoic acid cyano group isopropyl ester, 4-cyano group-4-(thiobenzoyl) valeric acid or 2,2'-[first thio group two (sulfo-)] two [2 Methylpropionic acid].
Described a kind of PC/PMMA alloy, it is characterized in that step 2) in ammonia solution to reduce reagent used be dimethyl phosphniline and normal hexyl Amine mixture, the mole number that feeds intake is the 0.01-0.1% of RAFT reagent mole number, and wherein the molar ratio of dimethyl phosphniline and normal hexyl Amine is 1:2.
Described a kind of PC/PMMA alloy, is characterized in that end in step 4) is the PMMA macromonomer of unsaturated double-bond, the molar ratio of vinylbenzene and maleic anhydride is 1-10:1:1.
The preparation method of described PC/PMMA alloy, is characterized in that comprising the steps:
1) take material by described weight percentage, and Homogeneous phase mixing obtains compound;
2) compound is sent into extruding pelletization in twin screw extruder, obtained PC/PMMA alloy, described twin screw extruder is divided into 9 sections, and each zone temperatures scope is set to respectively: a district 228-232 DEG C; Two district 238-242 DEG C; Three district 248-252 DEG C; Four district 248-252 DEG C; Five district 253-257 DEG C; Six district 258-262 DEG C; Seven district 248-252 DEG C; Eight district 228-232 DEG C; Nine district 178-182 DEG C.
By adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is as follows:
1) the present invention adopts methyl methacrylate to carry out radical living polymerization by initiator and RAFT reagent, react the polymethylmethacrylate prepared containing thioester substrate, ammonia solution reduction end thioester substrate is sulfydryl again, obtain the polymethylmethacrylate that end is sulfydryl, continue to carry out addition reaction with allyl methacrylate(AMA), obtain the PMMA macromonomer that end is unsaturated double-bond, last and the vinylbenzene of this large PMMA molecule monomer, maleic anhydride obtains St/MAH-g-MMA graft copolymer, the structure of this St/MAH-g-MMA graft copolymer confirms through Infrared Characterization,
2) compatilizer St/MAH of the present invention is connected with the direct chemical bond of blend PMMA, alloy is prepared as graft copolymer is blended with PC or PS, ABS etc. again, obviously more blended than the three such as St/MAH, PMMA and PC or PS, ABS, consistency will be got well, by three components, blended to be reduced to two components blended, make technique simple, processing condition more easy to control, and improve blended workshop condition; And improve alloy mechanical property and stability, and the present invention is that the PMMA macromer molecular weight prepared by RAFT living polymerization is controlled, PMMA chain length is homogeneous, makes alloy property more stable, controlled.
3) the present invention is by by PMMA macromonomer and vinylbenzene, maleic anhydride, obtains St/MAH-g-MMA graft copolymer as properties-correcting agent, mixes with PC.Relatively existing PC, St/MAH, PMMA three physical blending technology, this technology compatilizer St/MAH and the direct chemical bond of properties-correcting agent PMMA are connected, modified system be optimized for two blended, effectively can improve the consistency of PC/PMMA, make alloy property stability better, extend pellet storage time, and PMMA is first made St/MAH-g-MMA graft copolymer, reduce dust and smell, improve workshop condition;
4) the present invention is by adopting the feed ratio limited, PC/PMMA alloy is obtained by twin-screw extrusion, strengthen the physicals of alloy, effectively put forward heavy alloyed tensile strength, surface hardness, heat-drawn wire and glossiness, the PC/PMMA alloy obtained can be widely used in the fields such as engineering materials, electrical equipment display, packaging.
Accompanying drawing explanation
Fig. 1 is the infrared spectrogram of grafts 1;
Fig. 2 is the infrared spectrogram of grafts 2;
Fig. 3 is the infrared spectrogram of grafts 3.
Embodiment
Below by specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited in this.
The synthesis of embodiment 1:St/MAH-g-MMA graft copolymer (connecing skill thing 1)
1) end is the synthesis of thioester bond PMMA:
Synthetic method is ordinary method, wherein AIBN: dithiobenzoic acid cyano group isopropyl ester: the mol ratio of methyl methacrylate is 1:5:200, and solvent is DMF, temperature of reaction is 60 DEG C, reaction times 24h, wherein methyl methacrylate is 2mol, and obtaining end is thioester bond PMMA;
2) end is the synthesis of the PMMA of sulfydryl:
In above-mentioned reaction system, add dimethyl phosphniline and the normal hexyl Amine (dimethyl phosphniline and normal hexyl Amine are than being 1:2) of 2mmol respectively, room temperature reaction 1h, obtains the PMMA that end is sulfydryl;
3) synthesis of PMMA macromonomer
Continue to add 0.05mol allyl methacrylate(AMA), room temperature reaction 4h in above-mentioned reaction system, obtain PMMA macromonomer;
4) synthesis of St/MAH-g-PMMA graft copolymer
In above-mentioned reaction system, add the vinylbenzene of 0.05mol, 0.05mol maleic anhydride and 0.6mmolAIBN respectively, carry out free-radical polymerized, be heated to 60 DEG C of reaction 8h, obtain St/MAH-g-PMMA, namely skill thing 1 is connect, its molecular weight is 40000, and wherein m, n, l are respectively 1,20,20, and this structure connecing skill thing is through infrared spectra certification, its infrared spectrogram is as shown in Figure 1: wherein, wave number is 1650-1450cm
-1for phenyl ring stretching vibration peak, 1730cm
-1for the carbonylic stretching vibration peak on MMA and maleic anhydride.
In above-described embodiment, initiator BPO or other azo-initiators or organic peroxide initiator replace AIBN, RAFT reagent 4-cyano group-4-(thiobenzoyl) valeric acid or 2,2'-[first thio group two (sulfo-)] two [2 Methylpropionic acid] replaces dithiobenzoic acid cyano group isopropyl ester, all can obtain same technique effect.
Embodiment 2: the preparation connecing skill thing 2
Synthesis step is with embodiment 1, wherein AIBN:2,2'-[first thio group two (sulfo-)] two [2 Methylpropionic acid]: the mol ratio of methyl methacrylate is dimethyl phosphniline and normal hexyl Amine (dimethyl phosphniline and normal hexyl Amine are than being 1:2) that 1:5:300 adds 2mmol, and 0.6mmolAIBN, obtains St/MAH-g-PMMA, connect skill thing 2, its molecular weight is 100000, and wherein m, n, l are respectively 10,20,50, and its structure as shown in Figure 2, wherein, wave number is 1650-1450cm
-1for phenyl ring stretching vibration peak, 1730cm
-1for the carbonylic stretching vibration peak on MMA and maleic anhydride.
Embodiment 3: the preparation connecing skill thing 3
Synthesis step is with embodiment 1, wherein AIBN:4-cyano group-4-(thiobenzoyl) valeric acid: the mol ratio of methyl methacrylate is 1:5:300, obtain St/MAH-g-PMMA, namely skill thing 3 is connect, its molecular weight is 40000, and wherein m, n, l are respectively 1,20,20, and its structure as shown in Figure 3, wherein, wave number is 1650-1450cm
-1for phenyl ring stretching vibration peak, 1730cm
-1for the carbonylic stretching vibration peak on MMA and maleic anhydride.
The preparation of embodiment 4:PC/PMMA alloy
Each component and weight percentage: PC50% grafts 145% antioxidant 1010 2%KMP-5903%, its preparation method is as follows:
Take material by described weight percentage, and Homogeneous phase mixing obtains compound, then compound is sent into extruding pelletization in twin screw extruder, described twin screw extruder is divided into 9 sections, and each zone temperatures scope is set to respectively: a district 228-232 DEG C; Two district 238-242 DEG C; Three district 248-252 DEG C; Four district 248-252 DEG C; Five district 253-257 DEG C; Six district 258-262 DEG C; Seven district 248-252 DEG C; Eight district 228-232 DEG C; Nine district 178-182 DEG C, obtained PC/PMMA alloy.
Above-mentioned oxidation inhibitor can replace antioxidant 1010 with other conventional oxidation inhibitor, and other conventional light diffusing agents of light diffusing agent replace KMP-590, also can obtain same technique effect.
The preparation of embodiment 5PC/PMMA alloy
Each component and weight percentage: PC80% grafts 115% antioxidant 1010 2%KMP-5903%, its preparation method is as embodiment 4.
The preparation of embodiment 6PC/PMMA alloy
Each component and weight percentage: PC50% grafts 245% antioxidant 1010 2%KMP-5903%, its preparation method is as embodiment 4.
The preparation of embodiment 7PC/PMMA alloy
Each component and weight percentage: PC60% grafts 235% antioxidant 1010 2%KMP-5903%, its preparation method is as embodiment 4.
The preparation of embodiment 8PC/PMMA alloy
Each component and weight percentage: PC75% grafts 320% antioxidant 1010 2%KMP-5903%, its preparation method is as embodiment 4.
The preparation of embodiment 9PC/PMMA alloy
Each component and weight percentage: PC60% grafts 335% antioxidant 1010 2%KMP-5903%, its preparation method is as embodiment 4.
The PC/PMMA alloy that embodiments of the invention 4-9 obtains, its quantitative measurement is as table 1:
Testing standard is:
Izod notched impact strength: ASTMD256, tensile strength: ASTMD638
Heat-drawn wire: ASTMD648 (under 1.82Mpa condition)
Pencil hardness: ASTMD3363, surface gloss: vancometer, 60 ° of tests;
Embodiment is exemplified below:
The physical function parameter of table 1 embodiment 4-9PC/PMMA alloy
As can be seen from above-mentioned table 1, the PC/PMMA alloy that the present invention obtains, shock strength reaches more than 613J/m, more than tensile strength 57MPa, and heat-drawn wire is not less than 112 DEG C, more than surface hardness 2H, surface luster more than 89%.
In addition to the implementation, the present invention can also have other embodiments.The technical scheme that all employing equivalent transformations is formed, within the protection domain all dropping on application claims.
Claims (8)
1. a PC/PMMA alloy, is characterized in that using St/MAH-g-MMA graft copolymer as main properties-correcting agent, and prepare alloy with PC is blended, it comprises the component of following weight percentage:
PC50-80%St/MAH-g-MMA graft copolymer 15-45% oxidation inhibitor 2% light diffusing agent 3%,
Described St/MAH-g-MMA graft copolymer structure formula is as follows:
Wherein 1≤m≤10,20≤n≤50,20≤l≤50, its weight-average molecular weight is 40000 ~ 100000, it is characterized in that the preparation method of St/MAH-g-MMA graft copolymer comprises the steps:
1) in the solution of the DMF of methyl methacrylate, initiator and RAFT reagent is added, carry out RAFT living polymerization, obtain the polymethylmethacrylate that end is thioester substrate, the molar ratio of described initiator, RAFT reagent and methyl methacrylate is 1:5:200-300;
2) be sulfydryl by the polymethylmethacrylate that obtains in step 1) by ammonia solution reduction end thioester substrate, obtain the polymethylmethacrylate that end is sulfydryl;
3) by step 2) end that obtains is that Michael reaction is carried out in the polymethylmethacrylate of sulfydryl and allyl methacrylate(AMA) addition, obtains the PMMA macromonomer that end is unsaturated double-bond;
4) step 3) obtains PMMA macromonomer that end is unsaturated double-bond and vinylbenzene, maleic anhydride, obtains St/MAH-g-MMA graft copolymer.
2. a kind of PC/PMMA alloy according to claim 1, is characterized in that the component comprising following weight percentage:
PC60-75%St/MAH-g-MMA graft copolymer 20-35% oxidation inhibitor 2% light diffusing agent 3%.
3. a kind of PC/PMMA alloy according to claim 1 and 2, is characterized in that described oxidation inhibitor is antioxidant 1010, and described light diffusing agent is machine silicon light diffusing agent KMP-590.
4. a kind of PC/PMMA alloy according to claim 1, is characterized in that the initiator described in step 1) is AIBN or BPO.
5. a kind of PC/PMMA alloy according to claim 1, the RAFT reagent that it is characterized in that described in step 1) is any one in dithiobenzoic acid cyano group isopropyl ester, 4-cyano group-4-(thiobenzoyl) valeric acid or 2,2'-[first thio group two (sulfo-)] two [2 Methylpropionic acid].
6. a kind of PC/PMMA alloy according to claim 1, it is characterized in that step 2) in ammonia solution to reduce reagent used be dimethyl phosphniline and normal hexyl Amine mixture, the mole number that feeds intake is the 0.01-0.1% of RAFT reagent mole number, and wherein the molar ratio of dimethyl phosphniline and normal hexyl Amine is 1:2.
7. a kind of PC/PMMA alloy according to claim 1, is characterized in that end in step 4) is the PMMA macromonomer of unsaturated double-bond, the molar ratio of vinylbenzene and maleic anhydride is 1-10:1:1.
8. a preparation method for PC/PMMA alloy according to claim 1, is characterized in that comprising the steps:
1) take material by described weight percentage, and Homogeneous phase mixing obtains compound;
2) compound is sent into extruding pelletization in twin screw extruder, obtained PC/PMMA alloy, described twin screw extruder is divided into 9 sections, and each zone temperatures scope is set to respectively: a district 228-232 DEG C; Two district 238-242 DEG C; Three district 248-252 DEG C; Four district 248-252 DEG C; Five district 253-257 DEG C; Six district 258-262 DEG C; Seven district 248-252 DEG C; Eight district 228-232 DEG C; Nine district 178-182 DEG C.
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| CN104910605B (en) * | 2015-07-15 | 2018-01-26 | 上海锦湖日丽塑料有限公司 | A kind of scratch-resistant high transmittance PC alloy resin compositions and preparation method thereof |
| CN108250712B (en) * | 2018-02-28 | 2020-11-24 | 成都普特斯医疗科技有限公司 | Medical polycarbonate composite material and preparation method thereof |
| CN111662528B (en) * | 2020-07-13 | 2022-07-15 | 西南科技大学 | PMMA/PC-based ultrathin composite optical film and preparation method and application thereof |
| CN114479415B (en) * | 2022-04-15 | 2022-06-17 | 潍坊工程职业学院 | PC/PMMA alloy and preparation method thereof |
| CN115433506B8 (en) * | 2022-07-21 | 2023-06-23 | 纳琳威纳米科技南通有限公司 | Matte coating with elastic self-repairing function and preparation method thereof |
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| CN102015892A (en) * | 2008-05-26 | 2011-04-13 | 帝人化成株式会社 | Flame-retardant polycarbonate resin composition |
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