CN105237996A - Recycled polycarbonate reinforced and toughened through isomeric crosslinking method and preparation method of recycled polycarbonate - Google Patents
Recycled polycarbonate reinforced and toughened through isomeric crosslinking method and preparation method of recycled polycarbonate Download PDFInfo
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- CN105237996A CN105237996A CN201510764704.0A CN201510764704A CN105237996A CN 105237996 A CN105237996 A CN 105237996A CN 201510764704 A CN201510764704 A CN 201510764704A CN 105237996 A CN105237996 A CN 105237996A
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Abstract
The invention provides recycled polycarbonate reinforced and toughened through an isomeric crosslinking method and a preparation method of the recycled polycarbonate and relates to a plastic material and a preparation method thereof. Firstly, recycled polycarbonate is subjected to forced air drying for 6-8 hours at the temperature of 80 DEG C; the dried recycled polycarbonate, a crosslinking master batch and inorganic filler are weighed according to the weight proportion and put in a high mixer to be mixed for 4-6 min, extrusion palletizing is conducted through a double-screw extruder at the temperature of 220 DEG C to 280 DEG C, and then the product is obtained. According to a traditional recycling method, an elastomer toughening agent is added for toughening, usually the tensile property of polycarbonate recycled materials is reduced, and therefore the whole mechanical performance is affected. According to the technical scheme, the effects of reinforcing and toughening the recycling polycarbonate can be achieved at the same time, the toughness and strength of regenerated polycarbonate can be good without adding compatilizer in the regeneration process of the recycled polycarbonate, and high market promotional value is achieved.
Description
Technical field
The present invention relates to a kind of plastic material and preparation method thereof, particularly relate to one isomerism crosslinking activeness and quietness and reclaim polycarbonate and preparation method thereof.
Background technology
Polycarbonate (being called for short PC) is the high molecular polymer containing carbonate group in molecular chain, and the structure according to ester group can be divided into the broad varietys such as aliphatics, aromatic series, aliphatic-aromatic.Mechanical property wherein due to aliphatics and aliphatic-aromatic polycarbonate is lower, thus limits its application in engineering plastics.Aromatic copolycarbonate is only had to obtain suitability for industrialized production at present.Due to the singularity on polycarbonate structure, now become the general engineering plastic that in five large-engineering plastics, rate of growth is the fastest.
PC is the amorphous polymer of almost colourless vitreous state, has well optical.PC high molecular weight resin has very high toughness, and Izod notched impact strength is 600-900J/m, and the heat-drawn wire of not filling the trade mark is approximately 130 ° of C, and this numerical value can be made after glass fiber reinforcement to increase by 10 ° of C.The modulus in flexure of PC can reach more than 2400MPa, and resin can be processed into large rigid articles.During lower than 100 ° of C, creep rate is under a load very low.PC hydrolytic resistance is poor, can not be used for the goods repeating to stand high pressure steam.PC salient features defect is that stability to hydrolysis resistance is not high enough, and to notch sensitive, resistance to organic chemistry moral character, resistance to scratch is poor, and long-term exposure can be turned to be yellow in ultraviolet.The same with other resins, the leaching of PC easily by some organic solvent is turbid.
In recent years, along with the demand of industrial development, people are to the study on the modification of polycarbonate also concern all the more.The object of modification PC is in order to toughness reinforcing, and improvement moulding processability, reduces residual set, increases flame retardant resistance etc., and specifically the kind of energy modification PC has: PC/ABS can improve modulus in flexure, thermotolerance, plating performance etc.PC/PET, PBT can improve resistance to chemical reagents, solvent resistant material property etc.PC/PMMA adds synthetic glass can improve outward appearance pearly-lustre color.PC/PA, HIPS can improve impelling strength, surface smoothness.PC/HDPE can improve resistance to boiling water, ageing resistance, weathering resistance, and LDPE effect is poor.PC glass or carbon fiber carry out enhancing modified, improve physical strength.And with brominated flame retardant and antimonous oxide, can be made into flame retardant grade PC.
Summary of the invention
The object of the present invention is to provide and reclaim polycarbonate and preparation method thereof with isomerism crosslinking activeness and quietness, after the method adopts isomerism crosslinking, while improving recovery polycarbonate impact property with crosslinked masterbatch, also can improve the tensile property reclaiming polycarbonate; And the introducing of isomerism crosslinking can make in the regenerative process of recovery polycarbonate without the need to add compatilizer also can make the toughness of recycled polycarbonate and intensity fine; Isomerism crosslinking does not affect substantially on the flexural strength and modulus in flexure that reclaim polycarbonate.
The object of the invention is to be achieved through the following technical solutions:
Reclaim polycarbonate with isomerism crosslinking activeness and quietness, by mass weight part, include: reclaim polycarbonate 60 ~ 80 parts; Toughner 10 ~ 30 parts; Crosslinked masterbatch 10 ~ 30 parts; Mineral filler 5 ~ 10 parts.
Described reclaims polycarbonate with isomerism crosslinking activeness and quietness, and described toughner is methyl methacrylate is shell, and acrylic elastomer is the core-shell polymer (A-688) of core; Acrylic ester grafted styrenic elastomer (B-31); At least one in maleation polybutadiene graft modification LLDPE.
Described reclaims polycarbonate with isomerism crosslinking activeness and quietness, by A, described crosslinked masterbatch expects that B expects and produce aqua three step part to form.
A expects composition: polycarbonate resin
Silane crosslinker (vinyltrimethoxy silane)
Initiator (dicumyl peroxide (DCP))
B expects composition: polycarbonate resin
Catalyzer (dibutyl tin laurate)
Oxidation inhibitor (antioxidant 1010)
Produce aqua composition: acid and metal oxide.
Described reclaims polycarbonate with isomerism crosslinking activeness and quietness, and the acid in described product aqua is at least one in stearic acid, mineral acid.
Described reclaims polycarbonate with isomerism crosslinking activeness and quietness, and the metal oxide in described product aqua is at least one in zinc oxide, stannic oxide.
Described reclaims polycarbonate with isomerism crosslinking activeness and quietness, and described filler is at least one in calcium carbonate, talcum powder.
Reclaim the preparation method of polycarbonate with isomerism crosslinking activeness and quietness, comprise the following steps:
A, to take 95 parts of A material by massfraction, put into twin screw extruder extruding pelletization after the mixing of 4.5 parts of B material, and then produce aqua (mixture of stearic acid and stannic oxide 1:1) and mix with 0.5 part and put into twin screw extruder extruding pelletization and form crosslinked masterbatch;
B, by weight ratio by crosslinked masterbatch, reclaim polycarbonate, mineral filler and put into high-speed mixer high speed mixing 4 ~ 6 minutes, make its Homogeneous phase mixing;
C, the material mixed in above-mentioned high-speed mixer joined in twin screw extruder hopper carry out melting mixing, extruding pelletization obtains recycled polycarbonate.
Described reclaims polycarbonate with isomerism crosslinking activeness and quietness, and the extruder temperature of described twin screw extruder controls between 220 DEG C-280 DEG C.
Advantage of the present invention and effect are:
After adopting isomerism crosslinking, while improving recovery polycarbonate impact property with crosslinked masterbatch, also can improve the tensile property reclaiming polycarbonate; And the introducing of isomerism crosslinking can make in the regenerative process of recovery polycarbonate without the need to add compatilizer also can make the toughness of recycled polycarbonate and intensity fine; Isomerism crosslinking does not affect substantially on the flexural strength and modulus in flexure that reclaim polycarbonate.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further:
Embodiment 1-3, in each embodiment, the weight distribution ratio of each component is as shown in table 1.Each component is taken by proportioning, in homogenizer mix 5 minutes, discharging, is placed in twin screw extruder by the raw material of compound and makes material, the temperature of forcing machine at 220 DEG C-280 DEG C, rotating speed 150r/min.Prepare batten, by corresponding standard testing (see table 2) results of property in table 3.
Formula composition (part) of table 1: embodiment 1-3 and comparative example 1
Table 2: Mechanics Performance Testing standard
Table 3: the Mechanics Performance Testing of recycled polycarbonate in embodiment 1-3
From the mechanical experimental results of table 3 embodiment 1-3 and comparative example 1, we are known: simple use toughner in, improve the tensile property that can reduce material while reclaiming polycarbonate impact property; After adopting isomerism crosslinking, while improving recovery polycarbonate impact property with crosslinked masterbatch, also can improve the tensile property reclaiming polycarbonate; And the introducing of isomerism crosslinking can make in the regenerative process of recovery polycarbonate without the need to add compatilizer also can make the toughness of recycled polycarbonate and intensity fine; Isomerism crosslinking does not affect substantially on the flexural strength and modulus in flexure that reclaim polycarbonate.
Claims (8)
1. reclaim polycarbonate with isomerism crosslinking activeness and quietness, it is characterized in that, by mass weight part, include: reclaim polycarbonate 60 ~ 80 parts; Toughner 10 ~ 30 parts; Crosslinked masterbatch 10 ~ 30 parts; Mineral filler 5 ~ 10 parts.
2. isomerism crosslinking activeness and quietness according to claim 1 reclaims polycarbonate, and it is characterized in that: described toughner is methyl methacrylate is shell, acrylic elastomer is the core-shell polymer (A-688) of core; Acrylic ester grafted styrenic elastomer (B-31); At least one in maleation polybutadiene graft modification LLDPE.
3. isomerism crosslinking activeness and quietness according to claim 1 reclaims polycarbonate, it is characterized in that: by A, described crosslinked masterbatch expects that B expects and produce aqua three step part to form;
A expects composition: polycarbonate resin
Silane crosslinker (vinyltrimethoxy silane)
Initiator (dicumyl peroxide (DCP))
B expects composition: polycarbonate resin
Catalyzer (dibutyl tin laurate)
Oxidation inhibitor (antioxidant 1010)
Produce aqua composition: acid and metal oxide.
4. isomerism crosslinking activeness and quietness according to claim 1 reclaims polycarbonate, it is characterized in that: the acid in described product aqua is at least one in stearic acid, mineral acid.
5. isomerism crosslinking activeness and quietness according to claim 1 reclaims polycarbonate, it is characterized in that: the metal oxide in described product aqua is at least one in zinc oxide, stannic oxide.
6. isomerism crosslinking activeness and quietness according to claim 1 reclaims polycarbonate, it is characterized in that: described filler is at least one in calcium carbonate, talcum powder.
7. reclaim the preparation method of polycarbonate with isomerism crosslinking activeness and quietness, it is characterized in that: comprise the following steps:
A, to take 95 parts of A material by massfraction, put into twin screw extruder extruding pelletization after the mixing of 4.5 parts of B material, and then produce aqua (mixture of stearic acid and stannic oxide 1:1) and mix with 0.5 part and put into twin screw extruder extruding pelletization and form crosslinked masterbatch;
B, by weight ratio by crosslinked masterbatch, reclaim polycarbonate, mineral filler and put into high-speed mixer high speed mixing 4 ~ 6 minutes, make its Homogeneous phase mixing;
C, the material mixed in above-mentioned high-speed mixer joined in twin screw extruder hopper carry out melting mixing, extruding pelletization obtains recycled polycarbonate.
8. isomerism crosslinking activeness and quietness according to claim 7 reclaims polycarbonate, it is characterized in that: the extruder temperature of described twin screw extruder controls between 220 DEG C-280 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106674522A (en) * | 2016-12-13 | 2017-05-17 | 沈阳化工大学 | Isomeric cross-linking method modified recycled PC (Polycarbonate) containing L-POSS cross-linking agent and preparation method thereof |
| CN106832714A (en) * | 2016-12-22 | 2017-06-13 | 沈阳化工大学 | PMMA that a kind of activeness and quietness is reclaimed and preparation method thereof |
| CN106832142A (en) * | 2016-12-27 | 2017-06-13 | 天津金发新材料有限公司 | A kind of new filling PC compositions |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059376A (en) * | 2012-12-24 | 2013-04-24 | 常州南京大学高新技术研究院 | Enhanced toughening recycled polyethylene material and preparation method thereof |
| CN104341760A (en) * | 2013-07-30 | 2015-02-11 | 青岛欣展塑胶有限公司 | Polycarbonate toughened masterbatch with core-shell structure |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059376A (en) * | 2012-12-24 | 2013-04-24 | 常州南京大学高新技术研究院 | Enhanced toughening recycled polyethylene material and preparation method thereof |
| CN104341760A (en) * | 2013-07-30 | 2015-02-11 | 青岛欣展塑胶有限公司 | Polycarbonate toughened masterbatch with core-shell structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106674522A (en) * | 2016-12-13 | 2017-05-17 | 沈阳化工大学 | Isomeric cross-linking method modified recycled PC (Polycarbonate) containing L-POSS cross-linking agent and preparation method thereof |
| CN106674522B (en) * | 2016-12-13 | 2018-10-26 | 沈阳化工大学 | Isomerism cross-linking method containing L-POSS crosslinking agents is modified recycling PC and preparation method thereof |
| CN106832714A (en) * | 2016-12-22 | 2017-06-13 | 沈阳化工大学 | PMMA that a kind of activeness and quietness is reclaimed and preparation method thereof |
| CN106832142A (en) * | 2016-12-27 | 2017-06-13 | 天津金发新材料有限公司 | A kind of new filling PC compositions |
| CN106832142B (en) * | 2016-12-27 | 2019-05-03 | 天津金发新材料有限公司 | A kind of filling PC composition |
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