CN108997534A - A kind of preparation method of low-temperature transparent high-impact MBS resin - Google Patents
A kind of preparation method of low-temperature transparent high-impact MBS resin Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
- C08F279/06—Vinyl aromatic monomers and methacrylates as the only monomers
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Abstract
The present invention relates to technical field of polymer preparation, especially a kind of preparation method of low-temperature transparent high-impact MBS resin.A kind of preparation method of low-temperature transparent high-impact MBS resin of the invention synthesizes styrene-butadiene latex using 7 DEG C or so of low temperature emulsion polymerisation process, and control latex particle size meets the requirement of the transparency in 100nm or so；Low temperature emulsion polymerization synthesizes styrene-butadiene latex, compared with high temperature emulsion polymerization synthesizes styrene-butadiene latex, rubber phase molecular weight is big and narrow molecular weight distribution, be conducive to the raising of impact property, styrene-butadiene latex is synthesized using low temperature emulsion polymerization, the MBS resin of graft phenylethene, methyl methacrylate again, preparation has the transparency and impact resistance.
Description
Technical field
The present invention relates to technical field of polymer preparation, especially a kind of preparation side of low-temperature transparent high-impact MBS resin
Method.
Background technique
MBS resin is a kind of functional resin to grow up on the basis of ABS resin.MBS resin be butadiene (BD),
Styrene (ST) and methyl methacrylate (MMA) have typical core shell as made from emulsion polymerization on submicro-morphological
Structure, copolymer of methyl methacrylatestyrene constitute resin phase, and styrene-butadiene latex constitutes rubber phase.Due to the spy of MBS resin
Different structure, so that MBS resin has good cryogenic property, high impact resistance, transparent performance, any surface finish performance and Yi Jia
The performances such as work, and its resin solubility parameters (9.2-9.5) is close with polyvinyl chloride resin (9.5-9.7), so that MBS resin is used as PVC
There is good transparent performance and shock resistance when resin modifier.
It is mainly used for PVC film, clear sheet as transparent type MBS resin.Guarantee that the optical property of PVC/MBS alloy has
Two approach: it is made to be less than visible wavelength (0.4-0.7 μm of visible wavelength) first is that reducing MBS partial size, to eliminate dispersed phase
Scattering process of the particle to light, it is desirable that rubber phase partial size is in 100nm or so, but the shock resistance of the MBS resin prepared is just not
It is ideal；Second is that changing MBS resin composition, match its refraction index with polyvinyl chloride resin.Known PVC/MBS alloy system correlative
The refraction index of matter: PVC 1.54-1.55, ST are 1.590-1.592, PB 1.518, and MMA 1.489 will make MBS resin
Refraction index match with PVC, can be solved by adjusting each composition content in MBS resin, wherein rubber phase partial size
Size control be the key technology for preparing transparence MBS resin.
Conventional transparent MBS resin is using high temperature emulsion polymerization synthesis styrene-butadiene latex (polymerization temperature is at 65 DEG C or so), glue
Newborn size controlling is in 100nm or so, but the MBS resin prepared does not have impact resistance.Shock resistance MBS resin is big by synthesizing
Particle Butadiene-styrene Latex is made, but the MBS resin prepared does not have the transparency.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of low-temperature transparent high-impact MBS resin, overcome aforementioned existing
Deficiency existing for technology synthesizes styrene-butadiene latex using low temperature emulsion polymerisation process, make MBS resin obtained have both high transparency with
High impact properties.
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of preparation method of low-temperature transparent high-impact MBS resin, it is characterised in that: including following preparation step:
(1) synthesis of rubber phase latex: being passed through nitrogen into 10L reaction kettle, and the revolving speed of reaction kettle is set as 80-120rpm, adds
Enter decentralized medium, the oxygen in decentralized medium is removed by way of vacuumizing, successively emulsifier, polymerization are single into reaction kettle
Body, initiator, molecular weight regulator adjust pH=9-11 by pH adjusting agent, control solid content at 30-40%, nitrogen protection
Be warming up to 7 ± 1.5 DEG C, isothermal reaction 18-24h, conversion ratio >=93% and when latex particle size=80-110nm, reaction was completed to get
Rubber phase latex；
(2) resin grafted branches polymerize: nitrogen are passed through into 10L reaction kettle, the revolving speed of reaction kettle is set as 140-160rpm, is added
Rubber phase latex made from step (1) removes the oxygen in rubber phase latex by way of vacuumizing, resin is added under constant temperature
Phase monomer, molecular weight regulator, initiator and initiation auxiliary agent, adjust pH=9-10 by pH adjusting agent, control solid content in 30-
50%, reaction kettle is warming up to 50 ± 2 DEG C under nitrogen protection, and very surely reaction 4-6h, conversion ratio is greater than 98% and viscosity=90-110cp
When, reaction was completed to get MBS resin emulsion；
(3) it is spray-dried: the MBS resin emulsion of step (2) synthesis being sent into spray drying device, is spray-dried to get MBS tree
Cosmetics end.
Preferably, in the step (1), decentralized medium is deionized water；The emulsifier is anionic emulsifier；Institute
Stating polymerized monomer is butadiene and styrene；The initiator is oxidation-reduction system；The molecular weight regulator is dodecane
Base mercaptan；The pH adjusting agent is one of sodium hydroxide, sodium carbonate, potassium carbonate or a variety of.
Preferably, the emulsifier is disproportionated rosin soap, lauryl sodium sulfate, neopelex, dodecane
One of base sodium sulfonate, fatty acid soaps or oleate soap are a variety of.
Preferably, oxidant is cumyl hydroperoxide or potassium peroxydisulfate in the primosome agent；Reducing agent is ferrous salt,
Chelating agent is additionally added in reducing agent.
Preferably, the chelating agent is EDTA and rongalite.
Preferably, both butadiene and styrene ratio are 90-60:10-40wt% in the polymerized monomer.
Preferably, in the step (2), the resin phase monomer is styrene and methyl methacrylate；The molecule
Amount regulator is lauryl mercaptan；The initiator is cumyl hydroperoxide and ferrous sulfate；The initiation auxiliary agent is
EDTA and rongalite；The pH adjusting agent is one of sodium hydroxide, sodium carbonate, potassium carbonate or a variety of.
Preferably, both styrene and methyl methacrylate ratio are 60:40wt% in the resin phase monomer.
Preferably, the parts by weight of investment raw material are decentralized medium 180-220 parts, emulsifier 5-8 in the step (1)
Part, 90-110 parts of polymerized monomer, 0.5-0.8 parts of initiator, 0.05-0.15 parts of molecular weight regulator, pH adjusting agent 0.08-1.2
Part.
Preferably, the parts by weight of investment raw material are 420-440 parts of rubber phase emulsion, resin mutually list in the step (2)
Auxiliary agent 0.12-0.16 parts of 90-110 parts of body, 0.08-0.01 parts of molecular weight regulator, 0.1-0.12 parts of initiator and initiation.
The present invention uses low temperature emulsion polymerisation process (7 DEG C or so), synthesizes styrene-butadiene latex, controls latex particle size in 100nm
Left and right meets the requirement of the transparency；Low temperature emulsion polymerization synthesizes styrene-butadiene latex, synthesizes styrene-butadiene latex phase with high temperature emulsion polymerization
And narrow molecular weight distribution bigger than, rubber phase molecular weight, is conducive to the raising of impact property, synthesizes butylbenzene using low temperature emulsion polymerization
The MBS resin of latex, then graft phenylethene, methyl methacrylate, preparation has the transparency and impact resistance.
The beneficial effects of the present invention are: compared with prior art, a kind of low-temperature transparent high-impact MBS resin of the invention
Preparation method breaks through tradition MBS resin rubber phase high temperature polymerization technique, using low temperature polymerization technology, can prepare particle size conjunction
It fits, rubber phase molecular weight is big and the rubber phase particle of narrowly distributing；The MBS resin of preparation has transparent and anti-impact for PVC sheet
Hitting property.
Specific embodiment
A kind of preparation method of the low-temperature transparent high-impact MBS resin of embodiment 1
A kind of preparation method of low-temperature transparent high-impact MBS resin, including following preparation step:
(1) synthesis of rubber phase latex: being passed through nitrogen into 10L reaction kettle, and the revolving speed of reaction kettle is set as 100rpm, is added and divides
Dispersion media removes the oxygen in decentralized medium by way of vacuumizing, successively into reaction kettle emulsifier, polymerized monomer, draw
Agent, molecular weight regulator to be sent out, pH=10 are adjusted by pH adjusting agent, control solid content is warming up to 7 under 35%, nitrogen protection ±
1.5 DEG C, isothermal reaction 20h, conversion ratio >=93% and when latex particle size=80-110nm, reaction was completed to get rubber phase latex；
(2) resin grafted branches polymerize: nitrogen are passed through into 10L reaction kettle, the revolving speed of reaction kettle is set as 150rpm, and step is added
(1) rubber phase latex made from, removes the oxygen in rubber phase latex by way of vacuumizing, and it is mutually single that resin is added under constant temperature
Body, molecular weight regulator, initiator and initiation auxiliary agent adjust pH=9 by pH adjusting agent, and control solid content 40%, protect by nitrogen
It protects lower reaction kettle and is warming up to 50 ± 2 DEG C, very surely reaction 5h, when conversion ratio is greater than 98% and viscosity=90-110cp, reaction was completed, i.e.,
Obtain MBS resin emulsion；
(3) it is spray-dried: the MBS resin emulsion of step (2) synthesis being sent into spray drying device, is spray-dried to get MBS tree
Cosmetics end.
In the step (1), decentralized medium is deionized water；The emulsifier is anionic emulsifier；The polymerization
Monomer is butadiene and styrene；The initiator is oxidation-reduction system；The molecular weight regulator is dodecyl sulphur
Alcohol；The pH adjusting agent is one of sodium hydroxide, sodium carbonate, potassium carbonate or a variety of.The emulsifier be disproportionated rosin soap,
One of lauryl sodium sulfate, neopelex, dodecyl sodium sulfate, fatty acid soaps or oleate soap are more
Kind.Oxidant is cumyl hydroperoxide or potassium peroxydisulfate in the primosome agent；Reducing agent is ferrous salt, is also added in reducing agent
Enter chelating agent.The chelating agent is EDTA and rongalite.Both butadiene and styrene ratio are 90- in the polymerized monomer
60:10-40wt%。
In the step (2), the resin phase monomer is styrene and methyl methacrylate；The molecular weight regulator
For lauryl mercaptan；The initiator is cumyl hydroperoxide and ferrous sulfate；The initiation auxiliary agent is EDTA and carves white
Block；The pH adjusting agent is one of sodium hydroxide, sodium carbonate, potassium carbonate or a variety of.Styrene in the resin phase monomer
It is 60:40wt% with both methyl methacrylate ratios.
A kind of low-temperature transparent high-impact MBS resin of embodiment 2
According to the method for step (1) in embodiment 1, by the rubber phase emulsion for preparing the present embodiment according to the formula in table 1:
1 rubber phase lotion basic recipe of table
According to the method for step (2) in embodiment 1, it polymerize according to the resin grafted branches that the formula in table 2 carries out the present embodiment:
2 graft phase basic recipe of table
A kind of low-temperature transparent high-impact MBS resin of the present embodiment is made according to the method in 1 step of embodiment (3), is labeled as
MBS1。
A kind of low-temperature transparent high-impact MBS resin of embodiment 3
According to the method for step (1) in embodiment 1, the rubber phase emulsion of the present embodiment is prepared according to the formula of table 3:
3 rubber phase lotion basic recipe of table
According to the method for step (2) in embodiment 1, it polymerize according to the resin grafted branches that the formula in table 4 carries out the present embodiment:
4 graft phase basic recipe of table
A kind of low-temperature transparent high-impact MBS resin of the present embodiment is made according to the method in 1 step of embodiment (3), is labeled as
MBS2。
Comparative example 1 is a kind of to use transparent type MBS resin
Shandong Wanda Chemical Co., Ltd. universal transparent type MBS resin is chosen, MBS-3 is labeled as, such MBS resin uses high temperature
Emulsion polymerization production.
1 performance test of experimental example
Following experiment method is taken to detect its performance after the completion of embodiment 2, embodiment 3 and 1 preparation process of comparative example and preparation: 1,
Particle size and distribution
Instrument: it is measured using 90 laser particle analyzer of Malvern Instr Ltd. of Britain Zetasizer Nano ZS.
Method: (1)
A certain amount of solution is taken, being diluted to solid content is about 0.1% or pellucidity, and the solution after dilution is poured into sample cell by (2),
It measures, (3) particle size and distribution are handled through computer and obtained.
2, determination of solid content: 2g polymer emulsion being put into the aluminium dish that diameter is 4cm, cover aluminium lid, weighed, and then will
It is placed in the baking oven equipped with ventilation device, and at 115 DEG C after dry 20min, weighing can calculate to obtain solid content (TSC).
3, impact strength detects: PVC(S-800) base-material and MBS are placed on open type plastic purificating set, 185 DEG C of set temperature,
Then preliminary roller revolving speed 15r/min, back roller revolving speed 18r/min, mill 3min post-tensioning are placed in vulcanizing press at sheet material as required,
185 DEG C of set temperature, 3min is first preheated, after then forming 3min at 15MPm, then water flowing 3~5min of cooling, taking-up obtain plate
Material cuts into standard sample.It is detected with balance weight impact testing machine (laboratory apparatus Co., Ltd is surveyed in Shenzhen ten thousand).
4, transparency detects: PVC(S-800) base-material and MBS are placed on open type plastic purificating set, it is 185 DEG C of set temperature, preceding
Then sheet material is cut into 5cm × 5cm sample at sheet material by roller revolving speed 15r/min, back roller revolving speed 18r/min, mill 3min post-tensioning
Product are detected with photoelectricity mist degree instrument (Shanghai third optical instrument factory).
Wherein, particle size distribution is mainly for the preparation of (1) the step of process, and determination of solid content is mainly for the preparation of process
The step of (1) and step (2).
Through detecting, 2 rubber phase latex particle size of embodiment is 85nm, and 3 rubber phase latex particle size of embodiment is 105nm, partial size
Respectively less than visible wavelength (0.4-0.7 μm of visible wavelength) can eliminate scattering process of the dispersed phase particles to light, guarantee
The optical property of PVC/MBS alloy.
It is that MBS-3 carries out impact strength inspection to MBS-2 made from MBS-1 made from embodiment 2, embodiment 3 and comparative example 1
It surveys and transparency detection, testing result is distinguished as illustrated in tables 5-7:
5 PVC/MBS-1 performance test of table
| PVC/MBS-1,wt% | 100/3 | 100/6 | 100/10 |
| Impact strength, KJm-2 | 44.3 | 54.8 | 65.3 |
| Light transmittance, % | 94 | 91 | 88 |
6 PVC/MBS-2 performance test of table
| PVC/MBS-1,wt% | 100/3 | 100/6 | 100/10 |
| Impact strength, KJm-2 | 47.2 | 59.7 | 74.6 |
| Light transmittance, % | 93 | 89 | 88 |
7 PVC/MBS-3 performance test of table
| PVC/MBS-1,wt% | 100/3 | 100/6 | 100/10 |
| Impact strength, KJm-2 | 31.2 | 36.8 | 41.3 |
| Light transmittance, % | 86 | 88 | 87 |
MBS-1, MBS-2 performance indicator will be far superior to the MBS-3 of common high temperature production it can be seen from table 5-7, have both highly resistance
Impact strength and high transparency.
Above-mentioned specific embodiment is only specific case of the invention, and scope of patent protection of the invention includes but is not limited to
The product form and style of above-mentioned specific embodiment, any claims of the present invention and any technical field of meeting
The appropriate changes or modifications that those of ordinary skill does it, all shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of low-temperature transparent high-impact MBS resin, it is characterised in that: including following preparation step:
(1) synthesis of rubber phase latex: being passed through nitrogen into 10L reaction kettle, and the revolving speed of reaction kettle is set as 80-120rpm, adds
Enter decentralized medium, the oxygen in decentralized medium is removed by way of vacuumizing, successively emulsifier, polymerization are single into reaction kettle
Body, initiator, molecular weight regulator adjust pH=9-11 by pH adjusting agent, control solid content at 30-40%, nitrogen protection
Be warming up to 7 ± 1.5 DEG C, isothermal reaction 18-24h, conversion ratio >=93% and when latex particle size=80-110nm, reaction was completed to get
Rubber phase latex；
(2) resin grafted branches polymerize: nitrogen are passed through into 10L reaction kettle, the revolving speed of reaction kettle is set as 140-160rpm, is added
Rubber phase latex made from step (1) removes the oxygen in rubber phase latex by way of vacuumizing, resin is added under constant temperature
Phase monomer, molecular weight regulator, initiator and initiation auxiliary agent, adjust pH=9-10 by pH adjusting agent, control solid content in 30-
50%, reaction kettle is warming up to 50 ± 2 DEG C under nitrogen protection, and very surely reaction 4-6h, conversion ratio is greater than 98% and viscosity=90-110cp
When, reaction was completed to get MBS resin emulsion；
(3) it is spray-dried: the MBS resin emulsion of step (2) synthesis being sent into spray drying device, is spray-dried to get MBS tree
Cosmetics end.
2. a kind of preparation method of low-temperature transparent high-impact MBS resin as described in claim 1, it is characterised in that: the step
Suddenly in (1), decentralized medium is deionized water；The emulsifier is anionic emulsifier；The polymerized monomer be butadiene and
Styrene；The initiator is oxidation-reduction system；The molecular weight regulator is lauryl mercaptan；The pH adjusting agent
For one of sodium hydroxide, sodium carbonate, potassium carbonate or a variety of.
3. a kind of preparation method of low-temperature transparent high-impact MBS resin as claimed in claim 2, it is characterised in that: the cream
Agent is disproportionated rosin soap, lauryl sodium sulfate, neopelex, dodecyl sodium sulfate, fatty acid soaps or oil
One of sour soap is a variety of.
4. a kind of preparation method of low-temperature transparent high-impact MBS resin as claimed in claim 3, it is characterised in that: described to draw
Sending out oxidant in body agent is cumyl hydroperoxide or potassium peroxydisulfate；Reducing agent is ferrous salt, is additionally added chelating agent in reducing agent.
5. a kind of preparation method of low-temperature transparent high-impact MBS resin as claimed in claim 4, it is characterised in that: the chela
Mixture is EDTA and rongalite.
6. a kind of preparation method of low-temperature transparent high-impact MBS resin as claimed in claim 2, it is characterised in that: described poly-
Closing both butadiene and styrene ratio in monomer is 90-60:10-40wt%.
7. a kind of preparation method of low-temperature transparent high-impact MBS resin as described in claim 1, it is characterised in that: the step
Suddenly in (2), the resin phase monomer is styrene and methyl methacrylate；The molecular weight regulator is dodecyl sulphur
Alcohol；The initiator is cumyl hydroperoxide and ferrous sulfate；The initiation auxiliary agent is EDTA and rongalite；The pH is adjusted
Agent is one of sodium hydroxide, sodium carbonate, potassium carbonate or a variety of.
8. a kind of preparation method of low-temperature transparent high-impact MBS resin as claimed in claim 7, it is characterised in that: the tree
Both styrene and methyl methacrylate ratio are 60:40wt% in lipid phase monomer.
9. a kind of preparation method of low-temperature transparent high-impact MBS resin as described in claim 1, it is characterised in that: the step
Suddenly the parts by weight of investment raw material are decentralized medium 180-220 parts, 5-8 parts of emulsifier, 90-110 parts of polymerized monomer, draw in (1)
Send out agent 0.5-0.8 parts, 0.05-0.15 parts of molecular weight regulator, 0.08-1.2 parts of pH adjusting agent.
10. a kind of preparation method of low-temperature transparent high-impact MBS resin as described in claim 1, it is characterised in that: the step
Suddenly the parts by weight of investment raw material are 420-440 parts of rubber phase emulsion, 90-110 parts of resin phase monomer, molecular-weight adjusting in (2)
Auxiliary agent 0.12-0.16 parts of 0.08-0.01 parts of agent, 0.1-0.12 parts of initiator and initiation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144021A (en) * | 2019-04-26 | 2019-08-20 | 长春工业大学 | A kind of emulsifier and its preparation method and application |
| WO2023249812A1 (en) * | 2022-06-22 | 2023-12-28 | Basf Se | Styrene-butadiene latexes for asphalt emulsion applications |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144021A (en) * | 2019-04-26 | 2019-08-20 | 长春工业大学 | A kind of emulsifier and its preparation method and application |
| WO2023249812A1 (en) * | 2022-06-22 | 2023-12-28 | Basf Se | Styrene-butadiene latexes for asphalt emulsion applications |
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Inventor after: Guo Lingxiao Inventor after: Shang Jiyong Inventor after: Xie Fengming Inventor after: Meng Qiang Inventor after: Lin Runxiong Inventor after: Qu Chunlin Inventor before: Wu Zhipeng Inventor before: Shang Jiyong Inventor before: Xie Fengming Inventor before: Li Jingliang Inventor before: Lin Runxiong Inventor before: Qu Chunlin |
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Application publication date: 20181214 |
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| RJ01 | Rejection of invention patent application after publication |