CN106280401A - Multiple dimensioned SiC particulate hybrid buildup compound polyurethane material and preparation method thereof - Google Patents
Multiple dimensioned SiC particulate hybrid buildup compound polyurethane material and preparation method thereof Download PDFInfo
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- CN106280401A CN106280401A CN201610830999.1A CN201610830999A CN106280401A CN 106280401 A CN106280401 A CN 106280401A CN 201610830999 A CN201610830999 A CN 201610830999A CN 106280401 A CN106280401 A CN 106280401A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention discloses a kind of multiple dimensioned SiC particulate hybrid buildup compound polyurethane material and preparation method thereof, belong to composite material and preparation method thereof field.This material is made up of 100 parts of resins and 20 ~ 40 parts of SiC particulate；Wherein: in resin, the ratio of polyurethane and firming agent is 5:1, SiC particulate is made up of particle diameter 32 mesh 5 ~ 10wt%, particle diameter 280 mesh 10 ~ 15 wt%, particle diameter 500 mesh 30 ~ 35 wt%, particle diameter 800 mesh 30 ~ 35 wt% and particle diameter 6000 mesh 5 ~ 10 wt%.The invention also discloses the preparation method of described composite, including powder mixing, coating and curing molding；Described composite hardness is high, and shore hardness can reach 70 degree, and compared with single SiC particulate enhancing compound polyurethane material, coefficient of friction is the highest reduces 50%.
Description
Technical field
The invention belongs to composite deposite preparing technical field, be specifically related to a kind of based on multiple dimensioned SiC particulate hybrid buildup
Compound polyurethane material and preparation method thereof.
Background technology
Mould produces indispensable frock as modern industry, plays conclusive effect aborning.Current mould
Tool uses metal material mostly, and quality and the life-span of metal die are the highest, but its cost of manufacture is expensive, especially has some profiles
Complexity, exist machining difficulty, the manufacturing cycle long, the high and inefficient problem of cost.
Polymer matrix composites possess many excellent performances, and such as excellent chemical stability, excellent is corrosion-resistant, resistance to tired
Labor performance, good adhesive property and higher mechanical strength etc..Based on these advantages, polymer matrix composites are at chemical industry, machine
The fields such as tool, electronics and aerospace are widely used.Along with developing rapidly of chemical engineering industry, polymer matrix composites intensity and precision
Etc. aspect improve constantly so that it is the range of application of goods is also constantly expanding, and polymer matrix composites goods proportion is continuous
Increase.For metal material, polymer matrix composites cost of manufacture is cheap, easy-formation, and the process-cycle is short, repair time
Short, these advantages make it have huge application potential in mould applications.
And one or both SiC particulate normally used strengthens polymer matrix composites to there is hardness low in prior art,
And skewness, coefficient of friction height are easy to wear, make that there is high rigidity, the performance of corrosion resistant SiC particulate can not get fully
Play, reduce the service life of composite.
Summary of the invention
It is an object of the invention to provide a kind of multiple dimensioned SiC particulate hybrid buildup compound polyurethane material and preparation side thereof
Method, in polyurethane matrix, adds different size, the SiC particulate of different content, prepares the tree that hardness is high, coefficient of friction is low
Resin-based composite.
In order to solve the problems referred to above, the technical solution adopted in the present invention is as follows:
A kind of multiple dimensioned SiC particulate hybrid buildup compound polyurethane material, its component and proportioning are as follows:
Resin: 100 parts；
SiC particulate: 20 ~ 40 parts；
Described resin is polyurethane and firming agent, and both mass ratioes are 5:1.
The particle diameter of described SiC particulate is distributed as 32 ~ 6000 mesh, and concrete proportioning is:
Particle diameter 32 mesh 5 ~ 10wt%；
Particle diameter 280 mesh 10 ~ 15wt%；
Particle diameter 500 mesh 30 ~ 35wt%；
Particle diameter 800 mesh 30 ~ 35wt%；
Particle diameter 6000 mesh 5 ~ 10 wt%.
Described firming agent is preferably polyisocyanates, more preferably HDI trimer.
The invention also discloses the preparation method of above-mentioned composite, specifically comprise the following steps that
A) powder mixing: use water-bath, load weighted polyurethane is heated to 45 DEG C, to reduce the viscosity of polyurethane；According to
The size of SiC particulate, is added sequentially in polyurethane from small to large；Being firstly added small sized particles, stirring to little granule is abundant
After dispersed, according to particle size from small to large, it is sequentially added into SiC particulate, is sufficiently stirred for so that it is be dispersed；Press
According to polyurethane: firming agent is added in the requirement of firming agent=5:1, and after stirring 5min, modulation completes, and whole process temperature all maintains
45℃；
B) coating: the composite modulated, uses brush, and manual application is on cut-and-dried apperance surface, until requirement
Thickness；Use brush coating composite materials, the air bubble being involved in when stirring can be destroyed, reduce the gas of composite inner
Hole；
C) cold curing: coated apperance is at room temperature solidified 24h, or is heating and curing at 60 DEG C.
The present invention uses multiple dimensioned SiC particulate hybrid buildup compound polyurethane material, SiC particulate size gradation composition on
Strengthen polyurethane-base composite with existing SiC particulate and have the biggest difference, in composite preparation process, SiC particulate
Size is from grade to the interpolation of micron-sized different content, and large scale grade granule plays overall invigoration effect, micron particle
The matrix of strengthening micrometer-sized particles effect, its local strengthening effect, millimeter, micron SiC granule to the entirety of polyurethane resin,
The synergism of local strengthening, improves the overall hardness of composite and reduces coefficient of friction, and compactness is good.And it is described
Polyurethane, firming agent all use existing commercial goods, it is not necessary to modification.
Accompanying drawing explanation
Fig. 1 is the coefficient of friction comparison diagram of the embodiment of the present invention 1 and single grating SiC ceramic matrix composite material.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
First, use water-bath, take 75g commercial polyurethane and be heated to 45 DEG C, after the viscosity of polyurethane reduces by the time.Weigh respectively
SiC particulate: 32 mesh 1.25g, 280 mesh 2.5g, 500 mesh 7.5g, 800 mesh 7.5g, 6000 mesh 1.25g；From 6000 mesh to 32 mesh, depend on
In the secondary polyurethane matrix that above-mentioned SiC particulate is added, stir so that it is fully dispersed.Then, 15g HDI trimerization is added
Body, after stirring 5min, modulation completes, and whole process temperature all maintains 45 DEG C.The composite modulated, use brush,
Manual application is on cut-and-dried apperance surface, until the thickness required；Finally, coated apperance is at room temperature solidified
24h。
Embodiment 2
First, use water-bath, take 75g polyurethane and be heated to 45 DEG C, after the viscosity of polyurethane reduces by the time.Weigh SiC respectively
Granule: 32 mesh 3.8g, 280 mesh 5.6g, 500 mesh 13.4g, 800 mesh 13.4g, 6000 mesh 3.8g；From 6000 mesh to 32 mesh, successively
In the polyurethane matrix that above-mentioned SiC particulate is added, stir so that it is fully dispersed.Then, add the commercially available firming agent of 15g,
After stirring 5min, modulation completes, and whole process temperature all maintains 45 DEG C.The composite modulated, use brush, hands
Work is coated in cut-and-dried apperance surface, until the thickness required；Finally, coated apperance is heating and curing at 60 DEG C
6h。
Comparative example 1
Weigh SiC particulate respectively: 32 mesh 8.0g, 280 mesh 5.6g, 500 mesh 12.4g, 800 mesh 12.4g, 6000 mesh 1.25g；From
6000 mesh to 32 mesh, in the polyurethane matrix added by above-mentioned SiC particulate successively, stir so that it is fully dispersed.By implementing
The curing process of example 1 solidifies, and prepares composite.By composite cross-section is found, SiC of different scale
Grain is at composite inner skewness, and 32 mesh SiC particulate are mainly distributed on the bottom of composite, almost do not have between granule
Having the SiC particulate of other yardsticks, this is that before resin solidifies, sedimentation is fast owing to 32 mesh SiC particulate sizes are big.
Comparative example 2
Weigh SiC particulate respectively: 32 mesh 1.25g, 280 mesh 2.5g, 500 mesh 7.5g, 800 mesh 7.5g, 6000 mesh 6.5g；From 6000
Mesh, to 32 mesh, in the polyurethane matrix added by above-mentioned SiC particulate successively, stirs so that it is fully dispersed.By embodiment 1
Curing process solidify, prepare composite.By finding composite cross-section, 6000 mesh SiC particulate are multiple
The local, inside of condensation material is distributed in reunion state, and this is owing to 6000 mesh SiC particulate are undersized, in whipping process, it is impossible to
Crush undersized SiC particulate group completely, resin curing process is left in composite inner.
Table 1 below is the compound polyurethane material of the present invention multiple dimensioned SiC particulate hybrid buildup, strengthens with single SiC particulate
The shore hardness of compound polyurethane material and coefficient of friction contrast.The composite that the embodiment of the present invention 1 prepares rubs
Wiping power is tested, and strengthens composite contrast, under 100N load, dry friction, sliding time 20min with single grating SiC.
As it is shown in figure 1, the compound polyurethane material of the present invention multiple dimensioned SiC particulate hybrid buildup, increase with single SiC particulate
Strong compound polyurethane material compares, the highest reduction of coefficient of friction about 50%.
Claims (4)
1. a multiple dimensioned SiC particulate hybrid buildup compound polyurethane material, it is characterised in that its component and proportioning are as follows:
Resin: 100 parts；
SiC particulate: 20 ~ 40 parts；
Described resin is polyurethane and firming agent, and both mass ratioes are 5:1.
Composite the most according to claim 1, it is characterised in that: the particle diameter of described SiC particulate is distributed as 32 ~ 6000
Mesh.
Composite the most according to claim 2, it is characterised in that: described SiC particulate is by particle diameter 32 mesh 5 ~ 10wt%, grain
Footpath 280 mesh 10 ~ 15wt%, particle diameter 500 mesh 30 ~ 35wt%, particle diameter 800 mesh 30 ~ 35wt% and particle diameter 6000 mesh 5 ~ 10 wt% composition.
4. the preparation method of the composite as described in any one of claim 1-3, it is characterised in that step is as follows:
(1) powder mixing: use water-bath, load weighted polyurethane is heated to 45 DEG C；According to the size of above-mentioned SiC particulate,
It is added sequentially to from small to large in polyurethane, is sufficiently stirred for；According to polyurethane: firming agent is added in the requirement of firming agent=5:1, stirs
After mixing 5min, modulation completes, and whole process temperature all maintains 45 DEG C；
(2) coating: the composite modulated, uses brush, and manual application is on cut-and-dried apperance surface, until requirement
Thickness；
(3) cold curing: coated apperance is at room temperature solidified 24h, or is heating and curing at 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830999.1A CN106280401A (en) | 2016-09-19 | 2016-09-19 | Multiple dimensioned SiC particulate hybrid buildup compound polyurethane material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610830999.1A CN106280401A (en) | 2016-09-19 | 2016-09-19 | Multiple dimensioned SiC particulate hybrid buildup compound polyurethane material and preparation method thereof |
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| CN106280401A true CN106280401A (en) | 2017-01-04 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232672A (en) * | 1989-06-02 | 1990-12-19 | Belzona Molecular Ltd | Coating of metal surfaces |
| DE10248799A1 (en) * | 2002-10-19 | 2004-05-06 | Georg Gros | Abrasion-resistant coating composition e.g. for painting cars, buildings, furniture and white goods comprises hard, hollow micro-particles concentrated at surface of the coating |
| CN101277869A (en) * | 2005-10-07 | 2008-10-01 | 空中客车德国有限公司 | Polyurethane lacquers as abrasion-resistant coatings |
| CN104140666A (en) * | 2014-07-30 | 2014-11-12 | 东莞市吉鑫高分子科技有限公司 | High-abrasion-resistance transparent thermoplastic polyurethane elastomer for ball film and manufacturing method thereof |
| CN104177817A (en) * | 2014-07-30 | 2014-12-03 | 东莞市雄林新材料科技股份有限公司 | High-wear-resistance transparent TPU spherical film and preparation method thereof |
| CN104312135A (en) * | 2014-10-21 | 2015-01-28 | 常熟市金成模具有限公司 | Wear-resistant and corrosion-resistant mould material |
| CN104693681A (en) * | 2015-01-20 | 2015-06-10 | 南京工程学院 | SiC epoxy resin composite material and mold preparation method |
-
2016
- 2016-09-19 CN CN201610830999.1A patent/CN106280401A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232672A (en) * | 1989-06-02 | 1990-12-19 | Belzona Molecular Ltd | Coating of metal surfaces |
| DE10248799A1 (en) * | 2002-10-19 | 2004-05-06 | Georg Gros | Abrasion-resistant coating composition e.g. for painting cars, buildings, furniture and white goods comprises hard, hollow micro-particles concentrated at surface of the coating |
| CN101277869A (en) * | 2005-10-07 | 2008-10-01 | 空中客车德国有限公司 | Polyurethane lacquers as abrasion-resistant coatings |
| CN104140666A (en) * | 2014-07-30 | 2014-11-12 | 东莞市吉鑫高分子科技有限公司 | High-abrasion-resistance transparent thermoplastic polyurethane elastomer for ball film and manufacturing method thereof |
| CN104177817A (en) * | 2014-07-30 | 2014-12-03 | 东莞市雄林新材料科技股份有限公司 | High-wear-resistance transparent TPU spherical film and preparation method thereof |
| CN104312135A (en) * | 2014-10-21 | 2015-01-28 | 常熟市金成模具有限公司 | Wear-resistant and corrosion-resistant mould material |
| CN104693681A (en) * | 2015-01-20 | 2015-06-10 | 南京工程学院 | SiC epoxy resin composite material and mold preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 张慧波 等: "碳化硅改性PU弹性体复合材料的研究", 《化工新型材料》 * |
| 程清 等: "改性纳米碳化硅/聚氨酯弹性体复合材料的制备", 《聚氨酯工业》 * |
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Application publication date: 20170104 |