CN104893282A - Novel heatproof polyurethane elastomer composition and preparation method thereof - Google Patents
Novel heatproof polyurethane elastomer composition and preparation method thereof Download PDFInfo
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- CN104893282A CN104893282A CN201510260929.2A CN201510260929A CN104893282A CN 104893282 A CN104893282 A CN 104893282A CN 201510260929 A CN201510260929 A CN 201510260929A CN 104893282 A CN104893282 A CN 104893282A
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- type polyurethane
- heat resistance
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- elastic composition
- polyurethane elastic
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Abstract
The invention provides a novel heatproof polyurethane elastomer composition which comprises the following ingredients, by weight, 45-70 parts of polyester polyol, 10-20 parts of a chain extender, 10-30 parts of aromatic isocyanate, 3-10 parts of nano-attapulgite, 0.5-1 part of a coupling agent, 0.2-0.5 part of an antioxidant, 0.3-1 part of a catalyst and 1-3 parts of a release agent. The invention also discloses a preparation method of the heatproof polyurethane elastomer composition. The heatproof polyurethane elastomer composition provided by the invention has very good heat resistance.
Description
Technical field:
The present invention relates to a kind of polyurethane elastomer, particularly relate to a kind of heat resistance type polyurethane elastic composition and preparation method thereof.
Background technology:
Polyurethane elastomer is the macromolecular material be polymerized for basic raw material with isocyanic ester and oligomer polyol, there is the excellent properties such as good mechanical property, abrasion performance, oil resistant, tear-resistant, resistance to chemical attack, resistance to x radiation x, cementability be good, but its use temperature generally can not more than 80 DEG C, temperature knows from experience softening transform higher than elastic polyurethane when 100 DEG C, mechanical property obviously weakens, short-period used temperature more than 120 DEG C, can not limit its range of application.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of heat resistance type polyurethane elastic composition, and its resistance toheat is very good.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: polyester polyol 45 ~ 70 parts, chainextender 10 ~ 20 parts, aromatic isocyanate 10 ~ 30 parts, nano-attapulgite 3 ~ 10 parts, coupling agent 0.5 ~ 1 part, 0.2 ~ 0.5 part, oxidation inhibitor, catalyzer 0.3 ~ 1 part, releasing agent 1 ~ 3 part.
Preferably, polyester polyol of the present invention is polyoxyethylene glycol or PCDL or polycaprolactone trivalent alcohol.
Preferably, chainextender of the present invention is trihydroxy methyl propane or Viscotrol C or diphenylmethanediamiand.
Preferably, aromatic isocyanate of the present invention is diphenylmethanediisocyanate or 1,5-naphthalene diisocyanate or many phenyl polymethine isocyanic ester.
Preferably, coupling agent of the present invention is silicone coupling agents.
Preferably, oxidation inhibitor of the present invention is antioxidant 1010.
Preferably, catalyzer of the present invention is at least one in stannous octoate, dibutyl tin laurate, lead octoate 36.
Preferably, releasing agent of the present invention is polyethylene wax.
Another technical problem that the present invention will solve is to provide the preparation method of above-mentioned heat resistant type polyurethane elastomeric compositions.
For solving the problems of the technologies described above, technical scheme is:
A preparation method for heat resistance type polyurethane elastic composition, comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in coupling agent in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) polyester polyol, oxidation inhibitor, catalyzer are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add chainextender, aromatic isocyanate, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of releasing agent, solidify 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Compared with prior art, the present invention has following beneficial effect:
Attapulgite is a kind of silicate of stratiform, there is higher thermostability, be scattered in polyurethane matrix with very little mean interlayer distance after coupling agent modified, polyurethane molecular forms accurate two-dimentional limited system in the interlayer of attapulgite, the motion of the rotation of molecular chain, translation, segment all receives larger retardance, and attapulgite self has lower thermal conductivity, can effective trap heat, therefore can significantly improve the thermotolerance of polyurethane elastomeric compositions, its heat decomposition temperature can reach about 300 DEG C.
Embodiment:
Describe the present invention in detail below in conjunction with specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment 1
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: polyoxyethylene glycol 45g, trihydroxy methyl propane 20g, diphenylmethanediisocyanate 19.5g, nano-attapulgite 10g, silicone coupling agents 1g, antioxidant 1010 0.5g, stannous octoate 1g, polyethylene wax 3g.
Its preparation method comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in silicone coupling agents in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) polyoxyethylene glycol, antioxidant 1010, stannous octoate are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add trihydroxy methyl propane, diphenylmethanediisocyanate, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of polyethylene wax, solidify 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Embodiment 2
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: PCDL 70g, Viscotrol C 10g, 1,5-naphthalene diisocyanate 15g, nano-attapulgite 3g, silicone coupling agents 0.5g, antioxidant 1010 0.2g, dibutyl tin laurate 0.3g, polyethylene wax 1g.
Its preparation method comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in silicone coupling agents in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) PCDL, antioxidant 1010, dibutyl tin laurate are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add Viscotrol C, 1,5-naphthalene diisocyanate, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of polyethylene wax, solidifies 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Embodiment 3
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: polycaprolactone trivalent alcohol 63.5g, diphenylmethanediamiand 15g, many phenyl polymethine isocyanic ester 10g, nano-attapulgite 8g, silicone coupling agents 0.7g, antioxidant 1010 0.3g, lead octoate 36 0.5g, polyethylene wax 2g.
Its preparation method comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in silicone coupling agents in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) polycaprolactone trivalent alcohol, antioxidant 1010, lead octoate 36 are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add diphenylmethanediamiand, many phenyl polymethine isocyanic ester, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of polyethylene wax, solidify 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Embodiment 4
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: PCDL 60g, diphenylmethanediamiand 12g, diphenylmethanediisocyanate 30g, nano-attapulgite 5g, silicone coupling agents 0.6g, antioxidant 1010 0.4g, stannous octoate 1g, polyethylene wax 1g.
Its preparation method comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in silicone coupling agents in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) PCDL, antioxidant 1010, stannous octoate are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add diphenylmethanediamiand, diphenylmethanediisocyanate, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of polyethylene wax, solidify 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Embodiment 5
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: polyoxyethylene glycol 54.5g, trihydroxy methyl propane 18g, 1,5-naphthalene diisocyanate 20g, nano-attapulgite 4g, silicone coupling agents 0.8g, antioxidant 1010 0.5g, lead octoate 36 0.7g, polyethylene wax 1.5g.
Its preparation method comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in silicone coupling agents in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) polyoxyethylene glycol, antioxidant 1010, lead octoate 36 are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add trihydroxy methyl propane, 1,5-naphthalene diisocyanate, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of polyethylene wax, solidifies 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Embodiment 6
A kind of heat resistance type polyurethane elastic composition, it comprises the component of following weight part: polycaprolactone trivalent alcohol 50g, chainextender 14g, many phenyl polymethine isocyanic ester 26g, nano-attapulgite 6g, silicone coupling agents 0.9g, antioxidant 1010 0.2g, dibutyl tin laurate 0.9g, polyethylene wax 2g.
Its preparation method comprises the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in silicone coupling agents in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) polycaprolactone trivalent alcohol, antioxidant 1010, dibutyl tin laurate are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add chainextender, many phenyl polymethine isocyanic ester, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of polyethylene wax, solidify 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. a heat resistance type polyurethane elastic composition, it is characterized in that: it comprises the component of following weight part: polyester polyol 45 ~ 70 parts, chainextender 10 ~ 20 parts, aromatic isocyanate 10 ~ 30 parts, nano-attapulgite 3 ~ 10 parts, coupling agent 0.5 ~ 1 part, 0.2 ~ 0.5 part, oxidation inhibitor, catalyzer 0.3 ~ 1 part, releasing agent 1 ~ 3 part.
2. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described polyester polyol is polyoxyethylene glycol or PCDL or polycaprolactone trivalent alcohol.
3. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described chainextender is trihydroxy methyl propane or Viscotrol C or diphenylmethanediamiand.
4. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described aromatic isocyanate is diphenylmethanediisocyanate or 1,5-naphthalene diisocyanate or many phenyl polymethine isocyanic ester.
5. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described coupling agent is silicone coupling agents.
6. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described oxidation inhibitor is antioxidant 1010.
7. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described catalyzer is at least one in stannous octoate, dibutyl tin laurate, lead octoate 36.
8. a kind of heat resistance type polyurethane elastic composition according to claim 1, is characterized in that: described releasing agent is polyethylene wax.
9. the preparation method of a kind of heat resistance type polyurethane elastic composition according to claim 1 ~ 8 any one, is characterized in that comprising the following steps:
(1) nano-attapulgite is placed in homogenizer, high-speed stirring 6 minutes, is dissolved in coupling agent in ethanol, is added homogenizer, stirs discharging after 20 minutes, and at 100 DEG C, drying 1 hour, obtains attapulgite modified;
(2) polyester polyol, oxidation inhibitor, catalyzer are added in reactor, 3 hours are uniformly mixed at 120 DEG C, add chainextender, aromatic isocyanate, high-speed stirring 25 minutes, reactant is poured into temperature to be 110 DEG C, to scribble in the mould of releasing agent, solidify 6 hours at 130 DEG C, after cooling, the demoulding, obtain heat resistant type polyurethane elastomeric compositions.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238013A (en) * | 2015-10-09 | 2016-01-13 | 滁州环球聚氨酯科技有限公司 | High-pressure-resistant heat-resistant polyurethane elastomer |
| CN106750086A (en) * | 2016-12-14 | 2017-05-31 | 浙江吉高新材料有限公司 | A kind of high-performance reaction injection molding polyurethane and preparation method thereof |
| CN106866933A (en) * | 2017-02-20 | 2017-06-20 | 上海材料研究所 | A kind of solid buoyancy material and preparation method thereof |
| CN108997557A (en) * | 2018-09-11 | 2018-12-14 | 界首永恩机电科技有限公司 | A kind of preparation method of environmental protection TPU |
| CN109206584A (en) * | 2018-09-11 | 2019-01-15 | 界首永恩机电科技有限公司 | A kind of flame-proof environmental protection polyurethane elastomer |
| CN111315795A (en) * | 2017-11-08 | 2020-06-19 | 巴斯夫欧洲公司 | Vegetable oil as foam stabilizer in the production of PU boots |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238013A (en) * | 2015-10-09 | 2016-01-13 | 滁州环球聚氨酯科技有限公司 | High-pressure-resistant heat-resistant polyurethane elastomer |
| CN106750086A (en) * | 2016-12-14 | 2017-05-31 | 浙江吉高新材料有限公司 | A kind of high-performance reaction injection molding polyurethane and preparation method thereof |
| CN106866933A (en) * | 2017-02-20 | 2017-06-20 | 上海材料研究所 | A kind of solid buoyancy material and preparation method thereof |
| CN106866933B (en) * | 2017-02-20 | 2019-08-23 | 上海材料研究所 | A kind of solid buoyancy material and preparation method thereof |
| CN111315795A (en) * | 2017-11-08 | 2020-06-19 | 巴斯夫欧洲公司 | Vegetable oil as foam stabilizer in the production of PU boots |
| CN108997557A (en) * | 2018-09-11 | 2018-12-14 | 界首永恩机电科技有限公司 | A kind of preparation method of environmental protection TPU |
| CN109206584A (en) * | 2018-09-11 | 2019-01-15 | 界首永恩机电科技有限公司 | A kind of flame-proof environmental protection polyurethane elastomer |
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Application publication date: 20150909 |