CN105037640A - Novel method for preparing polyurethane alloy - Google Patents
Novel method for preparing polyurethane alloy Download PDFInfo
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- CN105037640A CN105037640A CN201510426033.7A CN201510426033A CN105037640A CN 105037640 A CN105037640 A CN 105037640A CN 201510426033 A CN201510426033 A CN 201510426033A CN 105037640 A CN105037640 A CN 105037640A
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Abstract
The present invention relates to a novel method for preparing polyurethane alloy. The method is as below: immersing 100 parts of PU in 10-100 parts of an unsaturated double bond monomers containing a dissolved initiator, controlling the soaking temperature at 0-60 DEG C for 3h-720h, assisting proper stirring during immersion or allowing standing for immersion, or increasing the diffusion rate by ultrasonic wave; and after the immersion, filtering to obtain PU with unsaturated monomer diffused internally, then polymerizing at 50-100 DEG C for 0.5-6 h to obtain a polyurethane alloy. The method has simple preparation process and reaches the molecular blending between the polymer; and the prepared polyurethane alloy can be directly used for various molding, and has good application prospect.
Description
Technical field
The invention belongs to synthetic resins field, be specifically related to a kind of novel method preparing polyurethane alloys.
Background technology
The polymkeric substance with different performance is prepared into polymer alloy by blending and modifying, can obtains single polymers does not have or better properties, the research of its theory and practice is in recent years very active, and achieves some important progress.
Thermoplastic elastomer had both had the excellent elasticity of rubber-based products, resistance to low temperature, tear resistance, there is again the excellent processing characteristics of Plastic product, thermoplastically, returnability, due to the comprehensive physical chemical property that these are good, thermoplastic elastomer product is widely used in various fields such as automobile, electric wire, sports goods, building materials, electron device, leather, sealing member, power tool, IT industry, toys in recent years, development rapidly, is the commercial product of state key encourage growth.Thermoplastic polyurethane (TPU) be the physicals of existing rubber as good springiness, wear-resisting, oil resistant, resistance to ozone, the low temperature resistant macromolecular material having again plastic working performance, thus range of application is very extensive.But its shortcoming is quite a few, mainly comprises: ageing resistance is poor, low, the easy skidding of poor fire, wet structure frictional coefficient, poor processability, cost are more high.
Technology For Polymer Alloy is utilized to prepare polyurethane alloys, the physical property of some excellences of TPU can be utilized to improve the deficiency of some other polymer performance aspect on the one hand, also the specific performance of other polymkeric substance can be adopted to the defect in some performance making up TPU on the other hand, meanwhile also can reduce thermoplastic polyurethane cost, the work about this respect has caused the interest of people.That has reported has the blend alloys such as TPU/PC, POM/TPU, TPU/PP, TPU/PVC, PA/TPU, PS/TPU.
The existing method preparing polymer alloy has the mixing method of high speed high shear strength, reactive extrursion method, solid phase comminuting method etc. at present, but there is the various problems such as technology is immature, equipment requirements is special, and all there is larger limitation, be all difficult to the universality method as preparing polymer alloy.As the mixing method of high speed high shear strength wherein, not only require to extrude the rotating speed that mixing facilities tool has hundreds to 1,000 hundreds of turns, and be only applicable to the extremely good polymer alloy system of consistency; There is harsh requirement the aspects such as reactive extrursion method not only controls the temperature of mixing facilities, pressure-controlling, sealing property, and must have stronger reactive behavior in polymer alloy system between material; It is after first being pulverized under lower temperature condition in special solid phase pulverizing unit by polymer alloy system that solid phase pulverizes rule, under the condition controlling mixing intensity, in mixing unit, make it to realize a kind of polymkeric substance be again dispersed in method in another polymkeric substance with nanoscale, this method not only needs to adopt special equipment and control condition, and the stable appearance of the alloy formed also the neutralization of the very poor OH aqueous solution except acid number, then easily make polyester polyol produce saponification phenomenon.
Summary of the invention
The present invention directly utilizes the gap between PU particle molecular chain, by the mode of scattering and permeating, make to enter gap between PU particle molecular chain containing unsaturated double-bond monomer, and then initiated polymerization, this is a kind of novel method preparing polyurethane alloys, is intended to solve, the various problem such as method and technology limitation large special to equipment requirements that exist in general polymerization thing reasonable offer.
Technical scheme of the present invention is as follows:
1, the radical polymerization initiator of 1-5 part (weight part, lower same) is dissolved in 100 parts contain in unsaturated double-bond monomer for subsequent use.
2, the PU of 100 parts is immersed in 10-100 part be dissolved with initiator containing in unsaturated double-bond monomer, control soaking temperature is 0-60 DEG C, soak time is 3h-720h, suitable stirring can be assisted between soak period, also can leave standstill immersion, also can auxiliary ultrasonic to improve velocity of diffusion.After immersion terminates, filter and obtain the PU that internal divergence has unsaturated monomer, then polymerase 10 .5-6h at 50-100 DEG C, obtains polyurethane alloys.
Radical polymerization initiator of the present invention is the initiator of various azo, various organo-peroxide class.
Of the present invention is vinylchlorid containing unsaturated double-bond monomer, vinylbenzene, vinyl acetate between to for plastic, vinylformic acid, methyl acrylate, ethyl propenoate, butyl acrylate, isobutyl acrylate, Ethyl acrylate, Isooctyl acrylate monomer, lauryl acrylate, benzyl acrylate, cyclohexyl acrylate, perfluoroalkyl acrylate, hydroxy ethyl phosphoric acid ester, isobornyl acrylate, vinylformic acid tetrahydrofuran (THF) methyl esters, methacrylic acid, methyl methacrylate, first class ethyl propenoate, butyl methacrylate, Propenoic acid, 2-methyl, isobutyl ester, methacrylic acid is ester, Isooctyl acrylate monomer, lauryl methacrylate(LMA), isobornyl methacrylate, one or more compositions in first class cyclohexyl acrylate.
The present invention has that preparation technology is simple, other is blended etc. to reach molecular level between polymkeric substance, and prepared polyurethane alloys can be directly used in various forming process, and has a good application prospect.
Specific embodiment
Be below several specific embodiment of the present invention, further illustrate the present invention, but the present invention be not limited only to this.
embodiment 1
The PU of 100 parts is immersed in 100 parts be dissolved with in the Butyl Acrylate Monomer of 5 parts of BPO initiators, control soaking temperature is 40 DEG C, soak time is 50h, stirring auxiliary suitable between soak period, after immersion terminates, filter and obtain the PU that internal divergence has butyl acrylate, then polyase 13 h at 80 DEG C, obtains polyurethane/polyacrylate alloy.
embodiment 2
The PU of 100 parts is immersed in 20 parts be dissolved with in the vinylbenzene of 0.5 part of Diisopropyl azodicarboxylate initiator, control that soaking temperature is 40 DEG C, to leave standstill soak time be 500h.After immersion terminates, filtration obtains internal divergence cinnamic PU, and then polymerase 10 .5-6h at 50-100 DEG C, obtains Networks of Polyurethane/Polystyrene alloy.
embodiment 3
The PU of 100 parts is immersed in the vinylbenzene being dissolved with 1 part of BPO initiator of 50 parts, vinyl acetate between to for plastic, vinylformic acid, butyl acrylate mix monomer, control soaking temperature is 45 DEG C, soak time is 48h, assists with ultrasonic echography to improve velocity of diffusion between soak period.After immersion terminates, filter and obtain the PU that internal divergence has unsaturated mix monomer, then polymerase 10 .5-6h at 50-100 DEG C, obtains polyurethane alloys.
Claims (4)
1. prepare a novel method for polyurethane alloys, its preparation process is:
The PU of 100 parts is immersed in 10-100 part be dissolved with initiator containing in unsaturated double-bond monomer, control soaking temperature is 0-60 DEG C, soak time is 3h-720h, suitable stirring can be assisted between soak period, also can leave standstill immersion, also can auxiliary ultrasonic to improve velocity of diffusion; After immersion terminates, filter and obtain the PU that internal divergence has unsaturated monomer, then polymerase 10 .5-6h at 50-100 DEG C, obtains polyurethane alloys.
2. a kind of novel method preparing polyurethane alloys according to claims 1, is characterized in that described radical polymerization initiator is the initiator of various azo, various organo-peroxide class.
3. a kind of novel method preparing polyurethane alloys according to claims 1, it is characterized in that described is vinylchlorid containing unsaturated double-bond monomer, vinylbenzene, vinyl acetate between to for plastic, vinylformic acid, methyl acrylate, ethyl propenoate, butyl acrylate, isobutyl acrylate, Ethyl acrylate, Isooctyl acrylate monomer, lauryl acrylate, benzyl acrylate, cyclohexyl acrylate, perfluoroalkyl acrylate, hydroxy ethyl phosphoric acid ester, isobornyl acrylate, vinylformic acid tetrahydrofuran (THF) methyl esters, methacrylic acid, methyl methacrylate, first class ethyl propenoate, butyl methacrylate, Propenoic acid, 2-methyl, isobutyl ester, methacrylic acid is ester, Isooctyl acrylate monomer, lauryl methacrylate(LMA), isobornyl methacrylate, one or more compositions in first class cyclohexyl acrylate.
4. a kind of novel method preparing polyurethane alloys according to claims 1, is characterized in that, can assist suitable stirring between soak period, also can leave standstill immersion, also can assist with ultrasonic echography to improve velocity of diffusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426033.7A CN105037640A (en) | 2015-07-20 | 2015-07-20 | Novel method for preparing polyurethane alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426033.7A CN105037640A (en) | 2015-07-20 | 2015-07-20 | Novel method for preparing polyurethane alloy |
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| CN105037640A true CN105037640A (en) | 2015-11-11 |
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| CN201510426033.7A Pending CN105037640A (en) | 2015-07-20 | 2015-07-20 | Novel method for preparing polyurethane alloy |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014147194A1 (en) * | 2013-03-20 | 2014-09-25 | Basf Se | Polyurethane-based polymer composition |
| CN104530335A (en) * | 2014-09-19 | 2015-04-22 | 北京化工大学 | Preparation method of thermoplastic polyurethane-polystyrene block copolymer |
-
2015
- 2015-07-20 CN CN201510426033.7A patent/CN105037640A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014147194A1 (en) * | 2013-03-20 | 2014-09-25 | Basf Se | Polyurethane-based polymer composition |
| CN104530335A (en) * | 2014-09-19 | 2015-04-22 | 北京化工大学 | Preparation method of thermoplastic polyurethane-polystyrene block copolymer |
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Application publication date: 20151111 |