CN104448196A - High-temperature-resisting cast polyurethane elastomer composition and preparation method thereof - Google Patents
High-temperature-resisting cast polyurethane elastomer composition and preparation method thereof Download PDFInfo
- Publication number
- CN104448196A CN104448196A CN201410781512.6A CN201410781512A CN104448196A CN 104448196 A CN104448196 A CN 104448196A CN 201410781512 A CN201410781512 A CN 201410781512A CN 104448196 A CN104448196 A CN 104448196A
- Authority
- CN
- China
- Prior art keywords
- component
- temperature
- molecular weight
- elastomer composition
- composition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3802—Low-molecular-weight compounds having heteroatoms other than oxygen having halogens
- C08G18/3814—Polyamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to a high-temperature-resisting cast polyurethane elastomer composition and a preparation method thereof. The high-temperature-resisting cast polyurethane elastomer composition comprises a component A and a component B, wherein the component A is prepared according to the method that 27% to 44% by weight of diisocyanate reacts with 56% to 73% by weight of polymer polyol at the temperature of 70-90 DEG C for 2-3 hours to obtain a prepolymer in which the isocyano-content is 6% to 10% by mass; the polymer polyol is polytetrahydrofuran polyol of which the degree of functionality is 2, the number-average molecular weight is 1000 to 2000, and tetrahydrofuran is taken as an initiator; or the polymer polyol is a polyether polyol of which the degree of functionality is 2, the number-average molecular weight is 500 to 1000, and bisphenol A is taken as the initiator; the diisocyanate is toluene diisocynate; and the component B is an aromatic diamine curing agent. The high-temperature-resisting cast polyurethane elastomer composition disclosed by the invention is good in technological performances; a product is greatly improved in mechanical properties and high temperature resistance; and the application has a great economic signification.
Description
Technical field
The present invention relates to the manufacture method of casting type polyurethane elastomer, be specifically related to a kind of resistant to elevated temperatures pouring type urethane elastomer composition and preparation method thereof.
Technical background
Polyurethane elastomer is a kind of segmented copolymer be made up of soft section and hard section, and be characterized in that Article Stiffness Determination setting range is wide, the elasticity of existing rubber has again the hardness of plastics, has good mechanical property.Be deep in national economy and people's lives in recent years, become a kind of new synthetic materials.Prepolymer for the production of polyurethane elastomer is all that TDI or MDI and polyol reaction obtain usually, the former adopts MOCA as chainextender usually, the latter adopt dibasic alcohol as: 1,4 butyleneglycols etc. are as chainextender, but dibasic alcohol is as chainextender, because its water-absorbent causes by force goods easily to foam, manufacturability is poorer than adopting MOCA.
Between the widespread use of polyurethane elastomer in society, be doomed polyurethane product in the face of various environment for use.One of most important performance assessment criteria that a kind of material is applied is exactly their mechanical property.Usually said elastomerics resistance toheat is poor, and at high temperature mechanical property conservation rate is low mainly to refer to it, and namely at high temperature its mechanical property significantly declines, when reaching certain temperature, and Mechanical Properties of Products actual effect.High temperature is generally from two approach: one is that environment for use temperature is high, and the urethane model be exposed to the sun as the sun expects, the polyurethane sealant of high temperature drying room; But during polyurethane product use, the interior heat-dissipating that self produces, as the rubber roll, rubber tire etc. of high speed rotating.The molecular weight of polyurethane elastomer increases, and rigidity improves, and cross-linking density increases, and is all conducive to the softening temperature and the heat decomposition temperature that improve urethane.
Summary of the invention
The object of this invention is to provide a kind of resistant to elevated temperatures pouring type urethane elastomer composition and preparation method thereof, make the high temperature resistant enhancing of goods, present invention process is functional, the mechanical property of goods and high temperature resistantly can obtain large increase, and this application has very large economic implications.
The resistant to elevated temperatures pouring type urethane elastomer composition of one of the present invention, is made up of two kinds of components:
Component A: obtain according to following preparation method: by weight percentage, reacts 2 ~ 3 hours by vulcabond 27% ~ 44% and polymer polyatomic alcohol 56% ~ 73% at 70 DEG C ~ 90 DEG C, obtains the prepolymer that isocyano mass content is 6 ~ 10%;
Described polymer polyatomic alcohol adopts functionality to be 2, take tetrahydrofuran (THF) as the polytetrahydrofuran polyol of initiator number-average molecular weight in 1000 ~ 2000 scopes, or functionality is 2, take dihydroxyphenyl propane as the polyether glycol of initiator number-average molecular weight in 500 ~ 1000 scopes; Described vulcabond is tolylene diisocyanate.
B component: a kind of aromatic diamine solidifying agent.
The number-average molecular weight of described polytetrahydrofuran polyol is 1000.Polytetrahydrofuran polyol is preferably PTMG-1000 (commercially available, BASF Co., Ltd).
The number-average molecular weight of described polyether glycol is 630.Polyether glycol is preferably Y610H (commercially available, Shandong Inov New Material Co., Ltd.).
Described tolylene diisocyanate refers to TDI-80 (commercially available, BASF Co., Ltd) or TDI-100, more preferably TDI-100 (commercially available, BASF Co., Ltd).
Aromatic diamine solidifying agent be 3,3 ˊ ?Er Lv ?4,4 ˊ ?diaminodiphenyl-methane.
The preparation method of Heat-resistance of Polyurethane Elastomers, carries out hybrid reaction by B component, component A with the scope of chain extension coefficient 0.85 ~ 1.0, and mixing temperature is 75 DEG C ~ 90 DEG C; Then carry out pouring into a mould, sulfidization molding, obtain polyurethane elastomer product after the demoulding.
Curing temperature is 100 DEG C ~ 115 DEG C.
Sulfidization molding is sulfuration 30 ~ 60 minutes shaping and demouldings, and postcure reaches optimum performance in 8 ~ 10 hours.
Chain extension coefficient is the equivalents ratio of NH2/NCO, i.e. the ratio of the amount of NCO in the amount of amino in curing agent component (comprising mixed curing agent), hydroxyl and performed polymer)
Sulfidization molding temperature is 100 DEG C ~ 115 DEG C, and sulfuration 30 ~ 60 minutes shaping and demouldings, reach optimum performance in 8 ~ 10 hours in postcure.
The present invention adopts functionality to be 2, take tetrahydrofuran (THF) as the polytetrahydrofuran polyol of initiator number-average molecular weight in 1000 ~ 2000 scopes; Functionality is 2, and take dihydroxyphenyl propane as the synthesis that the special polyether polyvalent alcohol of initiator number-average molecular weight within the scope of 500-1000 and tolylene diisocyanate are used for prepolymer, aromatic diamine solidifying agent is used for the making of polyurethane elastomer.
Compared with prior art, the present invention has following beneficial effect:
Resistant to elevated temperatures pouring type urethane elastomer composition of the present invention and preparation method thereof, make the high temperature resistant enhancing of goods, present invention process is functional, the mechanical property of goods and high temperature resistantly can obtain large increase, and this application has very large economic implications.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Following examples material therefor is as follows: be not specifically noted, and each percentage ratio all refers to mass percent.
PTMG-1000: number-average molecular weight 1000 polytetrahydrofuran dibasic alcohol;
Y610H: number-average molecular weight 630 take dihydroxyphenyl propane as the special polyether polyvalent alcohol of initiator;
TDI-100:2,4-tolylene diisocyanate 97%, 2,6-tolylene diisocyanate 3%;
Chloro-4, the 4 ˊ-diaminodiphenyl-methane of MOCA:3,3 ˊ-two.
Embodiment 1
Component A: prepolymer: obtain according to following preparation method: by weight percentage, the polytetrahydrofuran polyol (PTMG-1000) 66% of molecular weight 1000, molecular weight is the polyether glycol (Y610H) 7% of 630, tolylene diisocyanate (T-100) 27%, obtains 70 DEG C of reactions the prepolymer that isocyano-content is 6.2% for 3 hours.
B component: solidifying agent is chloro-4, the 4 ˊ-diaminodiphenyl-methane (MOCA) of 3,3 ˊ-two.
Prepolymer and MOCA carry out hybrid reaction with the chain extension coefficient ratio of 0.85, and mixing temperature is 80 DEG C, and goods curing temperature is 100 DEG C, and the sulfuration demoulding in 40 minutes, 110 DEG C of postcure 10 hours, obtains polyurethane elastomer product.
Embodiment 2
Component A: prepolymer: obtain according to following preparation method: by weight percentage, the polytetrahydrofuran polyol (PTMG-1000) 58% of molecular weight 1000, molecular weight is the special polyether polyvalent alcohol (Y610H) 14% of 630, tolylene diisocyanate (T-100) 28%, obtains 80 DEG C of reactions the prepolymer that isocyano-content is 6.2% for 2.5 hours.
B component: solidifying agent is selected from 3, chloro-4, the 4 ˊ-diaminodiphenyl-methane (MOCA) of 3 ˊ-two.
Prepolymer and MOCA carry out hybrid reaction with the chain extension coefficient of 0.9, and mixing temperature is 80 DEG C, and goods curing temperature is 100 DEG C, and the sulfuration demoulding in 40 minutes, 110 DEG C of postcure 10 hours, obtains polyurethane elastomer product.
Embodiment 3
Component A: prepolymer: obtain according to following preparation method: by weight percentage, the polytetrahydrofuran polyol (PTMG-1000) 50% of molecular weight 1000, molecular weight is the special polyether polyvalent alcohol (Y610H) 21% of 630, tolylene diisocyanate (T-100) 29%, obtains 90 DEG C of reactions the prepolymer that isocyano-content is 6.2% for 2 hours.
B component: solidifying agent is selected from 3, chloro-4, the 4 ˊ-diaminodiphenyl-methane (MOCA) of 3 ˊ-two.
Prepolymer and MOCA carry out hybrid reaction with the chain extension coefficient of 1.0, and mixing temperature is 80 DEG C, and goods curing temperature is 100 DEG C, and the sulfuration demoulding in 40 minutes, 110 DEG C of postcure 10 hours, obtains polyurethane elastomer product.
Comparison example 1
Component A: prepolymer: obtain according to following preparation method: by weight percentage, the polytetrahydrofuran polyol (PTMG-1000) 74% of molecular weight 1000, tolylene diisocyanate (T-100) 26%, obtains 70 DEG C of reactions the prepolymer that isocyano-content is 6.2% for 2 ~ 3 hours.
B component: solidifying agent is selected from 3, chloro-4, the 4 ˊ-diaminodiphenyl-methane (MOCA) of 3 ˊ-two.
Prepolymer and MOCA carry out hybrid reaction with the chain extension coefficient of 0.9, and mixing temperature is 80 DEG C, and goods curing temperature is 100 DEG C, and the sulfuration demoulding in 40 minutes, 110 DEG C of postcure 10 hours, obtains polyurethane elastomer product.
Polyurethane elastomer product performance is as following table:
Table 1 is the polyurethane elastomer product the performance test results of embodiment 1-3 and comparative example 1.
The performance test results of table 1 embodiment 1-3 and comparative example 1
Claims (8)
1. a resistant to elevated temperatures pouring type urethane elastomer composition, is characterized in that, is made up of two kinds of components:
Component A: obtain according to following preparation method: by weight percentage, reacts 2 ~ 3 hours by vulcabond 27% ~ 44% and polymer polyatomic alcohol 56% ~ 73% at 70 DEG C ~ 90 DEG C, obtains the prepolymer that isocyano mass content is 6 ~ 10%;
Described polymer polyatomic alcohol adopts functionality to be 2, take tetrahydrofuran (THF) as the polytetrahydrofuran polyol of initiator number-average molecular weight in 1000 ~ 2000 scopes, or functionality is 2, take dihydroxyphenyl propane as the polyether glycol of initiator number-average molecular weight in 500 ~ 1000 scopes; Described vulcabond is tolylene diisocyanate.
B component: a kind of aromatic diamine solidifying agent.
2. elastic composition according to claim 1, is characterized in that, the number-average molecular weight of described polytetrahydrofuran polyol is 1000.
3. elastic composition according to claim 1, is characterized in that, the number-average molecular weight of described polyether glycol is 630.
4. elastic composition according to claim 1, is characterized in that, described tolylene diisocyanate is TDI-80 or TDI-100.
5. elastic composition according to claim 1, is characterized in that, aromatic diamine solidifying agent is chloro-4, the 4 ˊ-diaminodiphenyl-methane of 3,3 ˊ-two.
6. a preparation method for resistant to elevated temperatures pouring type urethane elastomer composition according to claim 1, is characterized in that, B component, component A are carried out hybrid reaction with chain extension coefficient 0.85 ~ 1.0, and mixing temperature is 75 DEG C ~ 90 DEG C; Then carry out pouring into a mould, sulfidization molding, obtain polyurethane elastomer after the demoulding.
7. the preparation method of resistant to elevated temperatures pouring type urethane elastomer composition according to claim 6, is characterized in that, sulfidization molding temperature is 100 DEG C ~ 115 DEG C.
8. the preparation method of resistant to elevated temperatures pouring type urethane elastomer composition according to claim 6, is characterized in that, sulfidization molding is sulfuration 30 ~ 60 minutes shaping and demouldings, within 8 ~ 10 hours, reaches optimum performance in postcure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781512.6A CN104448196A (en) | 2014-12-16 | 2014-12-16 | High-temperature-resisting cast polyurethane elastomer composition and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781512.6A CN104448196A (en) | 2014-12-16 | 2014-12-16 | High-temperature-resisting cast polyurethane elastomer composition and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104448196A true CN104448196A (en) | 2015-03-25 |
Family
ID=52894995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410781512.6A Pending CN104448196A (en) | 2014-12-16 | 2014-12-16 | High-temperature-resisting cast polyurethane elastomer composition and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104448196A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974330A (en) * | 2015-06-25 | 2015-10-14 | 淄博德信联邦化学工业有限公司 | Preparation method of polyurethane heating radiator |
| CN108948727A (en) * | 2018-08-01 | 2018-12-07 | 扬中市橡胶塑料厂有限公司 | A kind of high temperature resistant polyurethane rubber and its pouring technology |
| CN109369876A (en) * | 2018-11-23 | 2019-02-22 | 耿佃勇 | Flak jackets polyurethane material |
| CN111944118A (en) * | 2020-08-28 | 2020-11-17 | 袁涌 | Damping type high-bearing-capacity polyurethane elastomer material and preparation method and application thereof |
| CN112194771A (en) * | 2020-08-26 | 2021-01-08 | 广东铭泽脚轮工业有限公司 | High-resilience casting type polyurethane elastomer |
| CN114395097A (en) * | 2021-12-13 | 2022-04-26 | 山东一诺威新材料有限公司 | Bi-component flame-retardant polyurethane material for reinforcing underground roadway and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504182A (en) * | 2011-10-27 | 2012-06-20 | 山东东大一诺威聚氨酯有限公司 | Preparation method of rigid polyurethane |
| CN102532467A (en) * | 2011-12-23 | 2012-07-04 | 山东东大一诺威聚氨酯有限公司 | High-resilience polyurethane elastomer compound |
-
2014
- 2014-12-16 CN CN201410781512.6A patent/CN104448196A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504182A (en) * | 2011-10-27 | 2012-06-20 | 山东东大一诺威聚氨酯有限公司 | Preparation method of rigid polyurethane |
| CN102532467A (en) * | 2011-12-23 | 2012-07-04 | 山东东大一诺威聚氨酯有限公司 | High-resilience polyurethane elastomer compound |
Non-Patent Citations (1)
| Title |
|---|
| 陈由亮等: "特种聚醚多元醇在聚氨酯弹性体中的性能研究", 《中国聚氨酯工业协会第十七次年会论文集》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974330A (en) * | 2015-06-25 | 2015-10-14 | 淄博德信联邦化学工业有限公司 | Preparation method of polyurethane heating radiator |
| CN108948727A (en) * | 2018-08-01 | 2018-12-07 | 扬中市橡胶塑料厂有限公司 | A kind of high temperature resistant polyurethane rubber and its pouring technology |
| CN109369876A (en) * | 2018-11-23 | 2019-02-22 | 耿佃勇 | Flak jackets polyurethane material |
| CN112194771A (en) * | 2020-08-26 | 2021-01-08 | 广东铭泽脚轮工业有限公司 | High-resilience casting type polyurethane elastomer |
| CN112194771B (en) * | 2020-08-26 | 2023-11-28 | 广东铭泽脚轮工业有限公司 | High-resilience casting polyurethane elastomer |
| CN111944118A (en) * | 2020-08-28 | 2020-11-17 | 袁涌 | Damping type high-bearing-capacity polyurethane elastomer material and preparation method and application thereof |
| CN114395097A (en) * | 2021-12-13 | 2022-04-26 | 山东一诺威新材料有限公司 | Bi-component flame-retardant polyurethane material for reinforcing underground roadway and preparation method thereof |
| CN114395097B (en) * | 2021-12-13 | 2023-12-12 | 山东一诺威新材料有限公司 | Double-component flame-retardant polyurethane material for reinforcing underground roadway and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104448196A (en) | High-temperature-resisting cast polyurethane elastomer composition and preparation method thereof | |
| CN105399917B (en) | Organic silicon modified thermoplastic polyurethane elastomer and preparation method thereof | |
| CN104448791B (en) | High-rigidity transparent polyurethane elastomer and preparation method thereof | |
| JP6348172B2 (en) | Thermoplastic polyurethanes made from prepolymers of low free monomers | |
| CN103641980B (en) | Hydrolysis Polyurethane Thermoplastic Elastomer and preparation method thereof | |
| EP3581603A1 (en) | Thermoplastic organosilicone-polyurethane elastomer and preparation method therefor | |
| SG193457A1 (en) | Auto-crusting microporous elastomer composition foruse in polyurethane foam-filled tire | |
| CN104387560A (en) | Thermoplastic polyurethane elastomer and preparation method thereof | |
| CN104151519B (en) | Body model is with microporous polyurethane elastomer premixed systems and preparation method thereof | |
| CN106700029B (en) | Polyurethane resin for shoe sole and preparation method and application thereof | |
| CN104448197B (en) | The synthetic method of the Heat-resistant Polyurethane Elastomers | |
| CN102532467A (en) | High-resilience polyurethane elastomer compound | |
| CN103833951B (en) | The preparation method of fast demoulding low hardness polyurethane elastic body composite | |
| CN110698627A (en) | High-breathability polyurethane sheet insole composite material and preparation method thereof | |
| CN105086423A (en) | Low-hardness casted polyurethane elastomer with plasticizer and preparation method for polyurethane elastomer | |
| CN103497518A (en) | Novel mold rubber and preparation method thereof | |
| CN106674474A (en) | Polyurethane shoe material capable of demoulding quickly at room temperature, and preparation method of polyurethane shoe material | |
| CN102040824B (en) | Cast polyurethane elastomer composition for fashion model | |
| CN105294970A (en) | Bio-based thermoplastic polyurethane elastomer material and preparation method thereof | |
| CN109867768A (en) | A kind of temperature sensitive rigid poly urethanes porous material of deformation-and preparation method thereof | |
| CN109400842A (en) | A kind of polyurethane elastomer material and its preparation method and application of width temperature range application | |
| CN106065062A (en) | A kind of flame retarding type thermoplastic polyurethane elastomer and preparation method thereof | |
| IE20200257U1 (en) | Ultra-high hardness and high temperature-resistant casting polyurethane elastomer and preparation method thereof | |
| CN106674480B (en) | Preparation method of NDI (Newcastle disease) -modified MDI (diphenylmethane diisocyanate) -based polyurethane microporous elastomer | |
| CN103965433A (en) | Soft low-density polyurethane foam material for shoe sole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |