CN102003457A - Double-hardness polyurethane tire and manufacturing process thereof - Google Patents
Double-hardness polyurethane tire and manufacturing process thereof Download PDFInfo
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- CN102003457A CN102003457A CN 201010557510 CN201010557510A CN102003457A CN 102003457 A CN102003457 A CN 102003457A CN 201010557510 CN201010557510 CN 201010557510 CN 201010557510 A CN201010557510 A CN 201010557510A CN 102003457 A CN102003457 A CN 102003457A
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- hardness polyurethane
- polyurethane elastomer
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Abstract
The invention discloses a double-hardness polyurethane tire. The double-hardness polyurethane tire consists of a hard material tire core, a first hardness polyurethane elastomer rubber layer and a second hardness polyurethane elastomer rubber layer, wherein the first hardness polyurethane elastomer rubber layer is formed by performing gravity casting on an outer ring of the hard material tire core; and the second hardness polyurethane elastomer rubber layer is formed by performing gravity casting on an outer ring of the first hardness polyurethane elastomer rubber layer. The double-hardness polyurethane tire is manufactured by the following steps of: forming the first hardness polyurethane elastomer rubber layer by a gravity casting moulding process; after the first hardness polyurethane elastomer rubber layer is solidified, rubbing and washing the rim surface and coating an adhesive on the rim surface; casting a polyurethane elastomer with the second hardness to manufacture the second hardness polyurethane elastomer rubber layer. The double-hardness polyurethane tire is manufactured by a gravity casting moulding combinational process and has the advantages of high buffering property, simple processing technique, short processing period and low manufacturing cost. Polyurethane tires with more rubber layers can be manufactured.
Description
Technical field
The invention belongs to polyurethane product technology field, be specifically related to a kind of pair of hardness polyurethane rubber tire and preparation process thereof.
Background technique
Polyurethane elastomer is a kind of macromolecular material between plastics and rubber.Have very high intensity and elongation percentage, have favorable mechanical performance and wear-resisting property and rebound elasticity performance.
The casting type polyurethane product is a kind of product of being made by the method for cast by liquid polyurethane, and it is compared with General Purpose Rubber, has higher mechanical strength (for 2～3 times of natural rubber); Remarkable wear resistance (being 5～10 times of natural rubbers); Oil resistant, solvent resistance are superior, and oxytolerant, ozone resistance are outstanding, surface smoothing, bright and clean, fine and smooth, and the appearance luster homogeneous, hardness range is wide, and still has high elasticity (this is the unexistent characteristics of other glue kinds) under high hardness; The surface finishment height; Mechanical processing characteristic is superior; Also much higher with the adhesion strength of metal than other rubber.By Molecular Structure Design, can obtain the polyurethane elastomer of a series of different hardness.
With the polyurethane rubber tire of polyurethane elastomer preparation, owing to have high abrasion, high elasticity, advantage such as running noise is low, and tension strength is big has obtained using widely in all trades and professions.
But along with the development of technology, people's polyurethane rubber tire has proposed more to be strict with to aspects such as efficient, energy-conservation, low noise, environmental protection, and the polyurethane rubber tire of originally single hardness can't satisfy some clients' specific (special) requirements.For example, promote the polyurethane rubber tire of usefulness, need bigger frictional force, and can not be out of shape excessive; And the polyurethane rubber tire that conveyor line needs also requires good abrasion resistance when requiring good shock-absorbing capacity is arranged.
Summary of the invention
The polyurethane elastomer wear-resisting property that hardness is high is good, and the polyurethane elastomer friction factor that hardness is low is big, distortion is big.The inventor is by the polyurethane elastomer of combination different hardness, and the two hardness polyurethane rubber tires of preparation are in the hope of having solved the deficiency of single hardness polyurethane rubber tire in the prior art.Therefore, technical problem to be solved by this invention is to propose a kind of pair of hardness polyurethane rubber tire and preparation process thereof.
Technological scheme of the present invention is achieved in that a kind of pair of hardness polyurethane rubber tire, its innovative point is to be made up of hard material core wheel, the first hardness polyurethane elastomer glue-line and the second hardness polyurethane elastomer glue-line, the outer ring gravity-assist pouring of hard material core wheel forms the first hardness polyurethane elastomer glue-line, and the first hardness polyurethane elastomer glue-line outer ring gravity-assist pouring forms the second hardness polyurethane elastomer glue-line.
The preparation process of above-mentioned pair of hardness polyurethane of the present invention rubber tire comprises the steps:
(1) mould and die preheating places pretreated hard material core wheel,
(2) the first hardness polyurethane elastomer performed polymer is heated to the temperature of setting, adds curing agent, mix, adopt gravity-assist pouring technology, solidifying is made the first hardness polyurethane elastomer glue-line;
(3) the first hardness polyurethane elastomer glue-line is machined, clean, be coated with binding agent;
(4) mould and die preheating places the core wheel of the pretreated first hardness polyurethane elastomer glue-line,
(5) the second hardness polyurethane elastomer performed polymer is heated to the temperature of setting, adds curing agent, mix, adopt gravity-assist pouring technology, solidifying is made the second hardness polyurethane elastomer glue-line;
(6) Vehicle Processing gets two hardness polyurethane rubber tires.
With respect to prior art, two hardness polyurethane rubber tires that the present invention adopts gravity-assist pouring moulding group technology to make, processing technology is simple, advantage of low manufacturing cost.Adopt the present invention also can prepare the polyurethane rubber tire of more glue-lines.For example, polyurethane rubber tire and track surface of contact that outer hardness is low are big, and bigger frictional force is provided, and have reduced power consumption; Internal layer is the low polyurethane rubber tire of hardness, has promptly guaranteed the wear-resisting property of rubber tire, has good shock-absorbing capacity again.Embodiment subsequently will prove, the two hardness polyurethane rubber tires that make of the present invention have improved the frictional force of polyurethane rubber tire, have good shock-absorbing capacity, can satisfy client's special requirement.
Description of drawings
Fig. 1 is the structure sectional view of the two hardness polyurethane rubber tires of the present invention.
Wherein: 1 is the hard core wheel; 2 is the first hardness polyurethane glue-line; 3 is the second hardness polyurethane glue-line.
Embodiment
Below in conjunction with the drawings and specific embodiments, further set forth the present invention.These embodiments are interpreted as only being used to the present invention is described and are not used in restriction protection scope of the present invention.After the content of having read the present invention's record, those skilled in the art can make various changes or modifications the present invention, and these equivalences change and modify and fall into claim of the present invention institute restricted portion equally.
Below in conjunction with two hardness polyurethane rubber tires that embodiment adopts gravity-assist pouring moulding group technology to make, it is good to have a shock-absorbing capacity, and processing technology is simple, and the process-cycle lacks, advantage of low manufacturing cost.Adopt the present invention also can prepare the polyurethane rubber tire of more glue-lines.
Embodiment 1 manufacturing of hard two hardness polyurethane rubber tires (outer in soft)
1, mould places pretreated core wheel, is preheating to 100-115 ℃;
2, will handle 90A TDI system performed polymer and curing agent and mix, be poured in the mould that is preheating to 100-115 ℃, sulfuration 30-40min at 75-85 ℃.Demoulding post curing places 100-115 ℃ baking oven to make the first hardness polyurethane elastomer glue-line in 16 hours;
3, the first hardness polyurethane elastomer glue-line is machined, clean, be coated with binding agent;
4, mould and die preheating places the core wheel of the pretreated first hardness polyurethane elastomer glue-line;
5, will handle 70A MDI system performed polymer and curing agent and mix, be poured in the mould that is preheating to 100-115 ℃, sulfuration 30-40min at 80-90 ℃.Solidified 2 hours, the demoulding is placed in 100-115 ℃ the baking oven slaking and made the second hardness polyurethane elastomer glue-line in 16 hours;
6, Vehicle Processing gets two hardness polyurethane rubber tires.
Detect every typical technology index of this pair hardness polyurethane rubber tire according to conventional method, as shown in table 1.
Embodiment 2 (the interior soft manufacturing of hard two hardness polyurethane rubber tires outward)
1, mould places pretreated core wheel, is preheating to 100-115 ℃;
2, will handle 80AMDI system performed polymer and curing agent and mix, be poured in the mould that is preheating to 100-115 ℃, sulfuration 20-30min at 75-85 ℃.The demoulding is placed in 100-115 ℃ the baking oven slaking and made the first hardness polyurethane elastomer glue-line in 16 hours;
3, the first hardness polyurethane elastomer glue-line is machined, clean, be coated with binding agent;
4, mould and die preheating places the core wheel of the pretreated first hardness polyurethane elastomer glue-line;
5, will handle 90A MDI system performed polymer and curing agent and mix, be poured in the rotary die that is preheating to 100-115 ℃, sulfuration 50-60min at 75-85 ℃.Solidified 2 hours, the demoulding is placed in 100-115 ℃ the baking oven slaking and made the second hardness polyurethane elastomer glue-line in 16 hours;
6, Vehicle Processing gets two hardness polyurethane rubber tires.
Detect every typical technology index of this pair hardness polyurethane rubber tire according to conventional method, as shown in table 1.
Embodiment 3 (manufacturings of two hardness polyurethane rubber tires of different materials)
1, mould places pretreated core wheel, is preheating to 100-115 ℃;
2, will handle 80A hardness MDI system performed polymer and curing agent and mix, be poured in the mould that is preheating to 100-115 ℃, sulfuration 40-50min at 75-85 ℃.Made the first hardness polyurethane elastomer glue-line in 16 hours 100-115 ℃ of slaking after the demoulding;
3, the first hardness polyurethane elastomer glue-line is machined, clean, be coated with binding agent;
4, mould and die preheating places the core wheel of the pretreated first hardness polyurethane elastomer glue-line;
5, performed polymer and the curing agent that will handle 95A hardness NDI system mixes at 110 ℃, is poured in the mould that is preheating to 100-115 ℃ sulfuration 25-30min.The second hardness polyurethane elastomer glue-line was made in demoulding post curing in 24 hours;
6, Vehicle Processing gets two hardness polyurethane rubber tires.
Detect every typical technology index of this pair hardness polyurethane rubber tire according to conventional method, as shown in table 1.
Table 1 polyurethane elastomer main performance
| The typical technology index | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Hardness (Shao A, 25 ℃) | 70 | 80 | 90 |
| Tensile strength (MPa) | 38 | 50 | 55 |
| Elongation at break (%) | 660 | 600 | 520 |
| Tear strength (KN/m, non-notch) | 88 | 93 | 114 |
| Rebound degree (%) | 42 | 42 | 38 |
| Abrasion (mm3) | 19 | 20 | 24 |
| Compression set rate (%) | 22 | 24 | 26 |
| Friction factor | 1.2 | 1.0 | 0.8 |
Claims (4)
1. two hardness polyurethane rubber tire, it is characterized in that, form by hard material core wheel, the first hardness polyurethane elastomer glue-line and the second hardness polyurethane elastomer glue-line, the outer ring gravity-assist pouring of hard material core wheel forms the first hardness polyurethane elastomer glue-line, and the first hardness polyurethane elastomer glue-line outer ring gravity-assist pouring forms the second hardness polyurethane elastomer glue-line.
2. the preparation process of described pair of hardness polyurethane of claim 1 rubber tire comprises the steps:
(1) mould and die preheating places pretreated hard material core wheel,
(2) the first hardness polyurethane elastomer performed polymer is heated to the temperature of setting, adds curing agent, mix, adopt gravity-assist pouring technology, solidifying is made the first hardness polyurethane elastomer glue-line;
(3) the first hardness polyurethane elastomer glue-line is machined, clean, be coated with binding agent;
(4) mould and die preheating places the core wheel of the pretreated first hardness polyurethane elastomer glue-line,
(5) the second hardness polyurethane elastomer performed polymer is heated to the temperature of setting, adds curing agent, mix, adopt gravity-assist pouring technology, solidifying is made the second hardness polyurethane elastomer glue-line;
(6) Vehicle Processing gets two hardness polyurethane rubber tires.
3. the preparation process of according to claim 2 pair of hardness polyurethane rubber tire is characterized in that, performed polymer is the different hydracid fat performed polymer of end, and curing agent is amine and alcohol compound.
4. the preparation process of according to claim 2 pair of hardness polyurethane rubber tire is characterized in that, in the step (1), mould and die preheating is to 100-115 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010557510 CN102003457A (en) | 2010-11-24 | 2010-11-24 | Double-hardness polyurethane tire and manufacturing process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010557510 CN102003457A (en) | 2010-11-24 | 2010-11-24 | Double-hardness polyurethane tire and manufacturing process thereof |
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| CN102003457A true CN102003457A (en) | 2011-04-06 |
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| CN 201010557510 Pending CN102003457A (en) | 2010-11-24 | 2010-11-24 | Double-hardness polyurethane tire and manufacturing process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248623A (en) * | 2011-05-09 | 2011-11-23 | 株洲时代新材料科技股份有限公司 | Polyurethane casting roller and manufacture method thereof |
| CN106182830A (en) * | 2016-07-14 | 2016-12-07 | 洛阳诚创耐磨材料有限公司 | A kind of process for renewing of waste and old casting type polyurethane sieve plate |
| CN107725601A (en) * | 2017-07-10 | 2018-02-23 | 北华大学 | A kind of preparation method of double-decker polyurethane composite bearing |
| CN112045914A (en) * | 2020-08-25 | 2020-12-08 | 河北华密橡胶科技股份有限公司 | Method for manufacturing multilayer multi-hardness polyurethane rubber core |
| CN113199772A (en) * | 2021-04-20 | 2021-08-03 | 戴克(天津)航空科技有限责任公司 | Remanufacturing process for inner end platform of guide stationary blade assembly at fan outlet of aircraft engine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833043A (en) * | 1971-10-07 | 1974-09-03 | Bridgestone Tire Co Ltd | Casting tires |
| CN1323687A (en) * | 2001-06-13 | 2001-11-28 | 华南理工大学 | Green tyre with composite rubber-polyurethane elastomer structure and its production process |
| CN1666860A (en) * | 2004-03-09 | 2005-09-14 | 前田贝壳零件服务株式会社 | Composite solid tire and method of producing same |
| CN2761554Y (en) * | 2004-12-30 | 2006-03-01 | 广州华工百川自控科技有限公司 | Polyurethane rolling wheel |
| CN1749147A (en) * | 2005-09-06 | 2006-03-22 | 广州华工百川自控科技有限公司 | Polyurethane roller and its preparing method |
| CN1781738A (en) * | 2004-12-01 | 2006-06-07 | 前田贝壳零件服务株式会社 | Retreading solia core tyre and its producing method |
| CN1807130A (en) * | 2006-01-27 | 2006-07-26 | 华南理工大学 | Polyurethane solid tyre and manufacturing method thereof |
| CN101219631A (en) * | 2008-01-29 | 2008-07-16 | 马兰英 | Polyurethane composite material tire and producing method thereof |
-
2010
- 2010-11-24 CN CN 201010557510 patent/CN102003457A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833043A (en) * | 1971-10-07 | 1974-09-03 | Bridgestone Tire Co Ltd | Casting tires |
| CN1323687A (en) * | 2001-06-13 | 2001-11-28 | 华南理工大学 | Green tyre with composite rubber-polyurethane elastomer structure and its production process |
| CN1666860A (en) * | 2004-03-09 | 2005-09-14 | 前田贝壳零件服务株式会社 | Composite solid tire and method of producing same |
| CN1781738A (en) * | 2004-12-01 | 2006-06-07 | 前田贝壳零件服务株式会社 | Retreading solia core tyre and its producing method |
| CN2761554Y (en) * | 2004-12-30 | 2006-03-01 | 广州华工百川自控科技有限公司 | Polyurethane rolling wheel |
| CN1749147A (en) * | 2005-09-06 | 2006-03-22 | 广州华工百川自控科技有限公司 | Polyurethane roller and its preparing method |
| CN1807130A (en) * | 2006-01-27 | 2006-07-26 | 华南理工大学 | Polyurethane solid tyre and manufacturing method thereof |
| CN101219631A (en) * | 2008-01-29 | 2008-07-16 | 马兰英 | Polyurethane composite material tire and producing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248623A (en) * | 2011-05-09 | 2011-11-23 | 株洲时代新材料科技股份有限公司 | Polyurethane casting roller and manufacture method thereof |
| CN106182830A (en) * | 2016-07-14 | 2016-12-07 | 洛阳诚创耐磨材料有限公司 | A kind of process for renewing of waste and old casting type polyurethane sieve plate |
| CN107725601A (en) * | 2017-07-10 | 2018-02-23 | 北华大学 | A kind of preparation method of double-decker polyurethane composite bearing |
| CN107725601B (en) * | 2017-07-10 | 2019-07-09 | 北华大学 | A kind of preparation method of double-layer structure polyurethane composite bearing |
| CN112045914A (en) * | 2020-08-25 | 2020-12-08 | 河北华密橡胶科技股份有限公司 | Method for manufacturing multilayer multi-hardness polyurethane rubber core |
| CN113199772A (en) * | 2021-04-20 | 2021-08-03 | 戴克(天津)航空科技有限责任公司 | Remanufacturing process for inner end platform of guide stationary blade assembly at fan outlet of aircraft engine |
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Application publication date: 20110406 |