CN101190956A - High-performance foaming regulator for low-foaming plate - Google Patents
High-performance foaming regulator for low-foaming plate Download PDFInfo
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- CN101190956A CN101190956A CNA2006100703341A CN200610070334A CN101190956A CN 101190956 A CN101190956 A CN 101190956A CN A2006100703341 A CNA2006100703341 A CN A2006100703341A CN 200610070334 A CN200610070334 A CN 200610070334A CN 101190956 A CN101190956 A CN 101190956A
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Abstract
The invention relates to a low-foamed sheet high performance foam regulator. Taking gross weight of polymeric monomer as 100 percent, 65-95 percent methacrylic ester and 5-35percent butyl acrylate is initiated by redox system, chain extender is added and the low-foamed sheet high performance foam regulator is obtained after the emulsion polymerization. Polymerization reaction starts at 50-60 DEG C. Reaction temperature is controlled to be less than or equal to 70 DEG C. For the invention, methacrylates monomer is obtained by adopting particular emulsification system, different monomer ratio, adding effective chain extender and being multi-step emulsion polymerized. Intrinsic viscosity reaches 8.5-11. The invention has the advantages of quick plasticization, high balancing torque, and excellent plasticization performance. Moreover, the invention provides higher impact strength and tensile strength for products and is a low-foamed sheet special regulator which has small dosage and high efficiency.
Description
Technical field
The present invention relates to a kind of high-performance foaming regulator for low-foaming plate.
Background technology
Need a kind of foaming control agent to play regulating effect early stage in plasticizing in the PVC low-foamed sheet course of processing, therefore the density of control foaming and the size of abscess evenly need the very fast and irreducible foaming control agent of balancing torque of a kind of plasticizing.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high-performance foaming regulator for low-foaming plate, has the advantages that plasticizing is fast, balancing torque is high, plasticizing capacity is good.
High-performance foaming regulator for low-foaming plate of the present invention, it is characterized in that in the polymerization single polymerization monomer gross weight be 100%, by methyl methacrylate 65～95% and butyl acrylate 5～35% under redox system causes, the adding chainextender carries out emulsion polymerization and forms, polyreaction is 50～60 ℃ of startups, control reaction temperature≤70 ℃.
Described redox system is: oxygenant accounts for 0.03～0.04% of polymerization single polymerization monomer gross weight, reductive agent accounts for 0.003～0.004% of polymerization single polymerization monomer gross weight, complexing agent accounts for 0.018～0.024% of polymerization single polymerization monomer gross weight, helps reductive agent to account for 0.06～0.08% of polymerization single polymerization monomer gross weight.
Described oxygenant is preferably hydrogen peroxide or isopropyl benzene, and the reductive agent preferably sulfuric acid is ferrous, and the preferred EDTA of complexing agent helps the preferred rongalite of reductive agent.
Emulsifier for emulsion polymerization is a sodium lauryl sulphate, is 1～1.5% of polymerization single polymerization monomer gross weight.
Described chainextender is a Vinylstyrene, is the gross weight 0.01～0.05% of polymerization single polymerization monomer.
Emulsion polymerization adopts the multistage emulsion polymerization, can be divided into three sections and carry out, and the consumption of each section polyreaction polymerization single polymerization monomer is 1/3rd of a total amount.
Advantage of the present invention:
The present invention adopts the methyl acrylic ester monomer to form by adopting special emulsification system, different monomers proportioning and adding the letex polymerization of effective chainextender multistage, and limiting viscosity reaches 8.5-11.It has the advantage that plasticizing is fast, balancing torque is high, plasticizing capacity is good.And can provide high impulse strength and tensile strength for product, be the few high low-foamed sheet regulating agent special of usefulness of a kind of consumption.
Embodiment
Preparation process is: synthetic the forming by letex polymerization in the enamel glass reactor of high-performance foaming regulator for low-foaming plate (LP-81 resin).In the 3000L reactor, add the 1500-1800kg deionized water, 12～18kg (be polymerization single polymerization monomer total amount 1～1.5%) sodium lauryl sulphate, reaction adopts redox system to cause, and divides three sections, and 50-60 ℃ of startup reacted, controlled temperature≤70 ℃.Add the monomeric mixture of one-step polymerization (be mixed with the chainextender Vinylstyrene, be the gross weight 0.01～0.05% of polymerization single polymerization monomer), when record transformation efficiency greater than 95% after, add next section polymerization single polymerization monomer again.Three sections have been reacted, 85 ℃ of slakings 1 hour, and the cooling blowing forms through press spray drying tower spraying drying.The polymerization single polymerization monomer total amount is 1200kg.Redox system is: hydrogen peroxide or isopropyl benzene are 0.03～0.04% of polymerization single polymerization monomer gross weight, and ferrous sulfate is 0.003～0.004% of a polymerization single polymerization monomer gross weight, and EDTA is 6 times of oxidant content, and rongalite is 2 times of oxidant content.Although more than the vicissitudinous scope of each raw material, as those of ordinary skills' general knowledge, in this scope, all can implement.
Embodiment one: according to above-mentioned preparation technology, the polymeric monomer intermixture total amount accounts for 1/3rd respectively by 100%, one, two, three section.The ratio of each monomer in polymeric monomer intermixture is: methyl methacrylate (MMA) 95%, butyl acrylate (BUA) 5%.The chainextender Vinylstyrene is the gross weight 0.03% of polymerization single polymerization monomer.
Limiting viscosity is 9.5.
Embodiment two: according to above-mentioned preparation technology, the polymeric monomer intermixture total amount accounts for 1/3rd respectively by 100%, one, two, three section.The ratio of each monomer in polymeric monomer intermixture is: MMA90%, BUA10%.The chainextender Vinylstyrene is the gross weight 0.05% of polymerization single polymerization monomer.
Limiting viscosity is 9.34.
Embodiment three: the polymeric monomer intermixture total amount accounts for 1/3rd respectively by 100%, one, two, three section.The ratio of each monomer in polymeric monomer intermixture is: MMA85%, BUA15%.The chainextender Vinylstyrene is the gross weight 0.01% of polymerization single polymerization monomer.
Limiting viscosity is 9.28.
Embodiment four: the polymeric monomer intermixture total amount accounts for 1/3rd respectively by 100%, one, two, three section.The ratio of each monomer in polymeric monomer intermixture is: MMA80%, BUA20%.The chainextender Vinylstyrene is the gross weight 0.02% of polymerization single polymerization monomer.
Limiting viscosity is 9.1.
Embodiment five: the polymeric monomer intermixture total amount accounts for 1/3rd respectively by 100%, one, two, three section.The ratio of each monomer in polymeric monomer intermixture is: MMA70%, BUA30%.The chainextender Vinylstyrene is the gross weight 0.03% of polymerization single polymerization monomer.
Limiting viscosity is 8.71.
Embodiment six: the polymeric monomer intermixture total amount accounts for 1/3rd respectively by 100%, one, two, three section.The ratio of each monomer in polymeric monomer intermixture is: MMA65%, BUA35%.The chainextender Vinylstyrene is the gross weight 0.03% of polymerization single polymerization monomer.
Limiting viscosity is 8.55.
The finished product that above each case is made detects according to following scheme respectively:
| Prescription one | Prescription two | Prescription three | Prescription four | Prescription five | Prescription six | Prescription seven | |
| PVC | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| CPE | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 |
| ACR | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 |
| The AC whipping agent | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Lime carbonate | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 |
| PE wax | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Compound lead | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 |
| Stearic acid | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Embodiment one finished product | 7.0 | ||||||
| Embodiment two finished products | 7.0 | ||||||
| Embodiment three finished products | 7.0 | ||||||
| Embodiment four finished products | 7.0 | ||||||
| Embodiment fifty percent product | 7.0 | ||||||
| Embodiment sixty percent product | 7.0 | ||||||
| Commercially available conditioning agent 530 | 9.0 |
Above eight assembly sides are proportionally mixed in high speed mixer respectively to 125 ℃ of dischargings coolings, and the back is drawn into sheet material under 180 ℃ of conditions of 3 minutes on the twin-roll plastic mixing mill.Carry out the detection of transparency, tensile strength, shock strength respectively.Test result:
| Prescription one | Prescription two | Prescription three | Prescription four | Prescription five | Prescription six | Prescription seven | |
| Density of material g/cm 3 | 0.45 | 0.46 | 0.46 | 0.46 | 0.47 | 0.47 | 0.50 |
| Shock strength KJ/m 2 | 8.24 | 8.39 | 8.41 | 8.49 | 8.64 | 8.94 | 7.5 |
Claims (5)
1. high-performance foaming regulator for low-foaming plate, it is characterized in that in the polymerization single polymerization monomer gross weight be 100%, by methyl methacrylate 65～95% and butyl acrylate 5～35% under redox system causes, the adding chainextender carries out emulsion polymerization and forms, polyreaction is 50～60 ℃ of startups, control reaction temperature≤70 ℃.
2. high-performance foaming regulator for low-foaming plate according to claim 1, it is characterized in that described redox system is: oxygenant accounts for 0.03～0.04% of polymerization single polymerization monomer gross weight, reductive agent accounts for 0.003～0.004% of polymerization single polymerization monomer gross weight, complexing agent accounts for 0.018～0.024% of polymerization single polymerization monomer gross weight, helps reductive agent to account for 0.06～0.08% of polymerization single polymerization monomer gross weight.
3. high-performance foaming regulator for low-foaming plate according to claim 2 is characterized in that described oxygenant is hydrogen peroxide or isopropyl benzene, and reductive agent is a ferrous sulfate, and complexing agent is EDTA, and helping reductive agent is rongalite.
4. high-performance foaming regulator for low-foaming plate according to claim 1 is characterized in that emulsifier for emulsion polymerization is a sodium lauryl sulphate, is 1～1.5% of polymerization single polymerization monomer gross weight.
5. high-performance foaming regulator for low-foaming plate according to claim 1 is characterized in that described chainextender is a Vinylstyrene, is the gross weight 0.01～0.05% of polymerization single polymerization monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100703341A CN101190956A (en) | 2006-11-18 | 2006-11-18 | High-performance foaming regulator for low-foaming plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100703341A CN101190956A (en) | 2006-11-18 | 2006-11-18 | High-performance foaming regulator for low-foaming plate |
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| Publication Number | Publication Date |
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| CN101190956A true CN101190956A (en) | 2008-06-04 |
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| CNA2006100703341A Pending CN101190956A (en) | 2006-11-18 | 2006-11-18 | High-performance foaming regulator for low-foaming plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504088A (en) * | 2011-11-29 | 2012-06-20 | 山东瑞丰高分子材料股份有限公司 | Acrylate processing aid as well as preparation method and application thereof |
| CN103980413A (en) * | 2014-06-04 | 2014-08-13 | 随州市晶辉高分子材料有限公司 | Preparation method of foaming modifier for foaming PVC (poly vinyl chloride) wood-plastic composite |
| CN105254817A (en) * | 2015-11-26 | 2016-01-20 | 淄博华星助剂有限公司 | Preparation method of acrylate foaming regulator with core-shell structure |
| CN107082848A (en) * | 2017-05-15 | 2017-08-22 | 陕西理工大学 | A kind of expandable PMMA powders and preparation method thereof |
| CN109591419A (en) * | 2018-11-30 | 2019-04-09 | 山东博拓塑业股份有限公司 | Resistance to folded plate of PVC foam and preparation method thereof |
-
2006
- 2006-11-18 CN CNA2006100703341A patent/CN101190956A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504088A (en) * | 2011-11-29 | 2012-06-20 | 山东瑞丰高分子材料股份有限公司 | Acrylate processing aid as well as preparation method and application thereof |
| CN102504088B (en) * | 2011-11-29 | 2013-11-27 | 山东瑞丰高分子材料股份有限公司 | Acrylate processing aid as well as preparation method and application thereof |
| CN103980413A (en) * | 2014-06-04 | 2014-08-13 | 随州市晶辉高分子材料有限公司 | Preparation method of foaming modifier for foaming PVC (poly vinyl chloride) wood-plastic composite |
| CN105254817A (en) * | 2015-11-26 | 2016-01-20 | 淄博华星助剂有限公司 | Preparation method of acrylate foaming regulator with core-shell structure |
| CN107082848A (en) * | 2017-05-15 | 2017-08-22 | 陕西理工大学 | A kind of expandable PMMA powders and preparation method thereof |
| CN109591419A (en) * | 2018-11-30 | 2019-04-09 | 山东博拓塑业股份有限公司 | Resistance to folded plate of PVC foam and preparation method thereof |
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Open date: 20080604 |