CN109306082A - Industrial vehicle Puffer-type buffering tyre - Google Patents
Industrial vehicle Puffer-type buffering tyre Download PDFInfo
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- CN109306082A CN109306082A CN201810778430.4A CN201810778430A CN109306082A CN 109306082 A CN109306082 A CN 109306082A CN 201810778430 A CN201810778430 A CN 201810778430A CN 109306082 A CN109306082 A CN 109306082A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0008—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the tread rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K2201/011—Nanostructured additives
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The issue of the present invention is to provide a kind of wearability compared with the past for further increasing tire, the industrial vehicle further improved the Puffer-type buffering tyre of tyre life can be sought.The present invention is a kind of industrial vehicle Puffer-type buffering tyre, and outer diameter is 650~700mm, is installed on the front-wheel of industrial vehicle, which is characterized in that the contact area (cm of tyre surface2) × block height (mm) is 5500~6500, and the circumferential pattern block of tyre surface is rigidly 3100~4000N/mm；In the rubber composition for constituting the tyre surface, relative to the rubber constituent of 100 mass parts, the partial size containing 50~65 mass parts is the carbon black of 18~25nm；Loss angle tangent of the rubber composition at 100 DEG C is below 0.16.
Description
Technical field
The present invention relates to industrial vehicles with Puffer-type buffering tyre (cushion tire).
Background technique
Low speed and apply great load the industrial vehicle such as fork truck in, mostly using appearance formed and fill
The same shape of air filled tyre, can directly wheel rim be assembled in wheel rim used in pneumatic tire so-called Puffer-type buffering tyre (with
Under, also referred to as " tire ").
The composition of common Puffer-type buffering tyre is shown in Fig. 3.Puffer-type buffering tyre 1 has configuration in the side wheel rim R
Base portion rubber layer 2 be configured at base portion rubber layer 2 radial outside tyre surface (tread) rubber layer 32 layers of structure.Separately
Outside, 3A is ground plane, and 3B is ditch portion, and 4 be bead core.In addition, CL is center line.
It is mounted with the industrial vehicle of such tire, is not usually travelled on highway but in severe road surface uplink
It sails, the frequency of turning is also high, so great load can be applied to tire, is easy abrasion, the pattern block (block) of tyre surface deforms
And it is easily broken off.In addition, along with low speed and big load when driving, tire fever is easy to cause the explosion of rubber.
Therefore, previous it is proposed that following proposal: the formula of tread-rubber to be improved, by improving hardness or making to extend
Rate becomes larger, and improves the wearability of tire accordingly, seeks the raising (for example, patent document 1,2) of tyre life.
[existing technical literature]
[patent document]
[patent document 1] Japanese Patent Laid-Open 10-53005 bulletin
[patent document 2] Japanese Patent Laid-Open 10-315706 bulletin
Summary of the invention
[problems to be solved by the invention]
However, the raising of tyre life still can not be said to be adequately, seeking further to improve.
Therefore, the subject of the invention is to provide a kind of industrial vehicle Puffer-type buffering tyre, industrial vehicle inflations
The type buffering tyre wearability compared with the past for further improving tire can seek further mentioning for tyre life
It is high.
[means for solving the problems]
After the present inventor furthers investigate, discovery can solve the above subject by following inventions, to complete this hair
It is bright.
The invention of item 1 is a kind of industrial vehicle Puffer-type buffering tyre, and outer diameter is 650~700mm, is installed on industry
The front-wheel of vehicle, which is characterized in that
Contact area (the cm of tyre surface2) × block height (mm) is 5500~6500；The circumferential pattern block rigidity of tyre surface
For 3100~4000N/mm,
In the rubber composition for constituting the tyre surface, relative to the rubber constituent of 100 mass parts, contain 50~65 mass parts
Partial size be 18~25nm carbon black；Loss angle tangent of the rubber composition at 100 DEG C is below 0.16.
The invention of item 2 is the Puffer-type buffering tyre of the industrial vehicle according to item 1, which is characterized in that described in composition
The rubber constituent of the rubber composition of tyre surface contains natural rubber and butadiene rubber；The content of the butadiene rubber relative to
The rubber constituent of 100 mass parts is 10~40 mass parts.
The invention of item 3 is the industrial vehicle Puffer-type buffering tyre according to item 1 or item 2, which is characterized in that described
Contact area is in 280cm2More than, the block height is in 23mm or less.
The invention of item 4 is a kind of industrial vehicle Puffer-type buffering tyre, is that outer diameter is 500~550mm and is installed on
The industrial vehicle of the rear-wheel of industrial vehicle Puffer-type buffering tyre, which is characterized in that
Contact area (the cm of tyre surface2) × block height (mm) is 3000~4000；The width direction pattern block of tyre surface
Rigidity is 2000~3000N/mm,
In the rubber composition for constituting the tyre surface, relative to the rubber constituent of 100 mass parts, contain 20~55 mass parts
Partial size be 25~35nm carbon black, and the rubber constituent relative to 100 mass parts, the butadiene rubber containing 10~40 mass parts
Glue；Loss angle tangent of the rubber composition at 100 DEG C is below 0.15.
Invention described in item 5 is the Puffer-type buffering tyre of the industrial vehicle according to item 4, which is characterized in that in structure
In rubber composition at the tyre surface, with the ratio (mass ratio) of 1:1 added with the partial size be 25~35nm carbon black and
Partial size is the carbon black of 18~25nm；Relative to the rubber constituent of 100 mass parts, the total amount of carbon black is 50~70 mass parts.
The invention of item 6 is the industrial vehicle Puffer-type buffering tyre according to item 4 or item 5, which is characterized in that described
Contact area is in 190cm2More than, the block height is in 20mm or less.
[invention effect]
According to the present invention it is possible to provide, one kind is compared with the past to further improve tire wear resistance, can seek tire
The industrial vehicle further improved the Puffer-type buffering tyre in service life.
Detailed description of the invention
Fig. 1 is the sectional view for showing the composition of industrial vehicle Puffer-type buffering tyre of one embodiment of the present invention.
Fig. 2 is the figure for illustrating the acquiring method of pattern block rigidity.
Fig. 3 is the sectional view for showing the composition of common industrial vehicle Puffer-type buffering tyre.
[explanation of symbol]
1: Puffer-type buffering tyre
2: base portion rubber layer
3: tyre surface (tread) rubber layer
3A: ground plane
3B: ditch portion
3C: tyre tread
31: pattern block
4: bead core
CL: center line
D: tire outside diameter
F: circumferential load is acted on
HB: block height
M: the circumferential lengths of pattern block
R: wheel rim
△: pattern block falls and mobile distance partially in the circumferential
Specific embodiment
[1] industrial vehicle of the invention Puffer-type buffering tyre
Firstly, being illustrated to industrial vehicle of the invention with Puffer-type buffering tyre (including its research process).
The present inventor to provide it is a kind of it is compared with the past further improve tire wear resistance, the tyre life (longevity can be sought
Life performance) the industrial vehicle further improved studied with Puffer-type buffering tyre during, to industrial vehicle
The mechanism of abrasion in the front wheels and rear wheels of tire is studied, and should be considered when finding out the wearability for improving each tire
Point, develops solution.
That is, generalling use front-wheel drive, rear-wheel mode of operation in industrial vehicle, apply in the front-wheel of great load using outer
The big tire of diameter, and require in the rear-wheel of small turning using the tire that outer diameter is small, since the power of direction of travel mainly acts on work
To drive the tyre surface of the front-wheel (front) of wheel to wear away so pattern block deforms in the circumferential.On the other hand, due to by turning
The power of bring width direction mainly acts on the tyre surface of the rear-wheel (rear) as operation wheel, so pattern block is in turning
Deformation leads to the generation of cracking in the direction of the width, wears away, while softening of generating heat.
Then, it is found after research, it, cannot be to considering on the formula of tread-rubber for the wearability for improving these tires
It is studied respectively with considering etc. for tire tread form, but needs to carry out comprehensive study to them.
That is, the abrasion not only abrasion due to friction with road surface of tire, but also it is related to the deformation of pattern block, it is big in deformation
When fine cracking is generated in rubber, so aggravation abrasion.
In addition, friction bring fever when due to by turning etc. can also aggravate to wear away.Specifically, fever makes building rubber compound
The loss angle tangent (tan δ) of object increases, and the degree less than explosion resistance to explosion property can reduce, so aggravation abrasion.
Herein, as considering on the formula of tread-rubber, can consider will act as reinforcing filler carbon black (hereinafter,
Also referred to as " CB ") partial size become smaller.By adding the CB of small particle, the increasing of the contact area between CB and rubber can be sought
Add, so the reinforcing effect of rubber improves, wearability is improved.
Then, following items are had confirmed that: as described above, the CB of more nominal particle size, specifically, the tyre surface rubber of front-wheel
The CB that partial size is 18~25nm is added in composition, addition partial size is 25~35nm's in the rubber composition for tire tread of rear-wheel
CB, the respective rubber of reinforcement, the rigidity (pattern block rigidity) of the pattern block of tyre surface rises accordingly, so the change of pattern block can be made
Deformation is small, can inhibit the generation of the fracture of pattern block.
In addition, the addition of such CB can make tan δ become smaller, specifically at 100 DEG C, in the tyre surface rubber of front-wheel
Can reduce in composition to 0.16 hereinafter, can reduce in the rubber composition for tire tread of rear-wheel to 0.15 hereinafter, so
It can inhibit the explosion of the rubber as caused by fever when driving.
It further has found following items: not only improving the hardness of tyre surface by the CB of particle diameter, but also as rubber
Ingredient, and when rubber constituent of the use in natural rubber (NR) added with butadiene rubber (hereinafter also referred to as " BR "), into one
Step ground, wearability improve.Especially, in the case where the rubber constituent of rear-wheel, significant effect is played.
By adding BR, in the NR layer for becoming base layer, soft BR layer is formed, the development of the cracking in tyre surface is in BR
Layer stops, and becomes more to be difficult to wear away.As a result, applying the wearability pole of the rear-wheel of big power when turning in the direction of the width
The earth improves.
But only by considering on the formula of above-mentioned tread-rubber, the raising of wearability is not possible to be sufficient.Cause
This, the present inventor further also studies considering for tire tread form, finds to need to make to be grounded to improve wearability
Area and block height become larger.
By making contact area and block height become larger, abrasion can be increased to tire by until wearing away (complete consumption) completely
The volume of rubber improve the life performance of tire so the wearability of tire can be maintained.
Then, it was found that, at this point, by so that contact area (cm2) it with the product of block height (mm) is a certain range
The mode of (specifically, being 5500~6500 in front-wheel, be 3000~4000 in rear-wheel) is set, in conjunction with by above-mentioned tire
Considering bring effect and synergistically playing effect on the formula of face rubber, the wearability of tire greatlys improve, thus complete
At the present invention.
That is, industrial vehicle of the invention is a kind of industrial vehicle Puffer-type buffering tyre with Puffer-type buffering tyre,
Its outer diameter is 650~700mm, is installed on the front-wheel of industrial vehicle, which is characterized in that
Contact area (the cm of tyre surface2) × block height (mm) is 5500~6500；The circumferential pattern block rigidity of tyre surface
For 3100~4000N/mm,
In the rubber composition for constituting the tyre surface, relative to 100 mass parts of rubber constituent, contain 50~65 mass parts
Partial size is the carbon black of 18~25nm；Loss angle tangent of the rubber composition at 100 DEG C is below 0.16.
In addition, industrial vehicle of the invention is a kind of industrial vehicle Puffer-type buffering tyre with Puffer-type buffering tyre,
Its outer diameter is 500~550mm, is installed on the rear-wheel of industrial vehicle, which is characterized in that
Contact area (the cm of tyre surface2) × block height (mm) is 3000~4000；The width direction pattern block of tyre surface
Rigidity is 2000~3000N/mm,
In the rubber composition for constituting the tyre surface, relative to the rubber constituent of 100 mass parts, contain 20~55 mass parts
Partial size be 25~35nm carbon black, and the rubber constituent relative to 100 mass parts, the butadiene rubber containing 10~40 mass parts
Glue；Loss angle tangent of the rubber composition at 100 DEG C is below 0.15.
[2] embodiments of the present invention
Hereinafter, specifically describing the present invention in conjunction with attached drawing based on embodiments of the present invention.
1. first embodiment
The tire of present embodiment is that outer diameter is 650~700mm and is installed on the industrial vehicle use of the front-wheel of industrial vehicle
Puffer-type buffering tyre.
As noted previously, as the tyre surface mainly effect by the power of direction of travel of the front-wheel as driving wheel, so
Pattern block is deformed in the circumferential and is worn away.
About the tire of present embodiment, rigidly big and excellent as the resistance to explosion property wheel of circumferential pattern block
Tire is the contact area (cm of tyre surface2) × block height (mm) is 5500~6500 and the circumferential pattern block rigidity of tyre surface
For the tire of 3100~4000N/mm.Then, the tyre surface of such tire, the rubber constituent relative to 100 mass parts contain 50
The partial size of~65 mass parts is the carbon black of 18~25nm, and the tan δ at 100 DEG C is below 0.16.
By being set as such composition, it is possible to provide it is suitable for use as being installed on the tire of industrial vehicle front-wheel, in the tire,
Each important document synergistically plays effect, and while the grip performance needed for maintaining front-wheel, wearability is excellent.
(1) shape of tyre surface
Fig. 1 is the sectional view for showing the composition of tire of present embodiment.In Fig. 1,3C is tyre tread, and 31 be pattern block, and D is
Tire outside diameter, HB are pattern blocks 31 from tyre tread 3C projecting height outstanding, i.e. block height.Other symbols are identical as Fig. 3, therefore
And it omits the description.
In present embodiment, rubber layer is being set as the basic of base portion rubber layer 2 and 2 layers of structure of tread rubber layer 3
In composition, there is no the points different from the previous composition of general tire as shown in Figure 3, but the shape of tread surface,
In the design for constituting the composition of the rubber composition of tread rubber layer 3 and the shape of pattern block 31, with previous difference.
In present embodiment, other than grip performance, also permit from the rigidity of the above-mentioned pattern block 31 of raising, increase abrasion
Perhaps from the point of view of the volume of rubber, it is based on contact area (cm2The size of) × block height (mm) is spent to set tyre surface
Line.Specifically, with contact area (cm2) × block height (mm) is set as 5500~6500 mode.More preferably
It is 5650~6350, further preferably 5800~6200.
In addition, preferably grounded area is in 280cm in present embodiment2More than, block height is in 23mm hereinafter, at this
Under conditions of sample, by with above-mentioned contact area (cm2The value of) × block height (mm) as 5500~6500 mode into
Row setting, can fully improve the wearability of tire.
It is further, rigid using circumferential pattern block as the rubber composition for constituting tyre surface also, in present embodiment
Property for 3100~4000N/mm and the tan δ at 100 DEG C is in 0.16 rubber composition below.By the way that circumferential pattern block is rigid
Property be set as 3100~4000N/mm, the power of direction of travel can be inhibited to have an effect and wear away this case.More preferably
3200~3900N/mm, further preferably 3300~3800N/mm.In addition, by the way that the tan δ at 100 DEG C is set in
0.16 hereinafter, can inhibit to generate heat.More preferably 0.14 hereinafter, more preferably 0.13 hereinafter, further preferably below 0.12.
In addition, above-mentioned circumferential direction pattern block can rigidly be sought based on F as shown in Figure 2 and △.In Fig. 2,31 be protuberance
It is formed in the pattern block of the tyre tread of tyre surface, M is the circumferential lengths of pattern block 31, and HB is block height.Pattern block rigidity is by spending
Circumferential load F is acted in the tyre surface of line block 31 to fall and the ratio between mobile distance △ F/ △ table partially in the circumferential with pattern block 31
Show.In addition, pattern block rigidity can also be after determining rubber hardness, through the circumferential lengths M and decorative pattern that provide pattern block 31
Block height HB is set.
(2) formula materials of tread rubber composition
Then, formula materials used in above-mentioned tread rubber composition are illustrated.
(a) rubber constituent
In present embodiment, uses natural rubber (NR) as principal component in rubber constituent, separately more preferably add thereto
Add the butadiene rubber (BR) of a part.Accordingly, in the NR layer for becoming base layer, it is formed with the BR layer of softness, in tyre surface
The further development of cracking stops at BR layers, becomes more difficult to wear away.
As NR rubber, there is no particular limitation, not only can be used conventional in the rubber industries such as SIR20, RSS#3, TSR20
Natural rubber, also can be used epoxy natural rubber (ENR), HNR hydrogenated natural rubber (HNR), deproteinized natural rubber (DPNR)
Equal modified natural rubbers.In addition, these natural rubbers both may be used alone, two or more kinds can also be used.
As BR, there is no particular limitation, and BR730, BR51 of such as JSR (Co., Ltd.) manufacture, the auspicious father-in-law of Japan can be used
(Zeon) BR1220 of (Co., Ltd.) manufacture, emerging BR130B, BR150B, the BR710 for producing (Co., Ltd.) manufacture in space portion are contour
Cis-content BR, BR1250H of auspicious father-in-law (Co., Ltd.) manufacture of Japan etc. low cis content BR, emerging production (Co., Ltd.) system in space portion
VCR412, the VCR617 etc. made contains BR (BR containing SPB) of 1,2- syndiotactic polybutadiene crystal (SPB) etc..These were both
It may be used alone, two or more kinds can also be used.
In addition, the BR rubber in present embodiment, when adding BR into rubber constituent, in 100 mass parts of rubber constituent
The content of glue is preferably 10~40 mass parts, more preferably 12~30 mass parts, further preferably 14~25 mass parts.
(b) carbon black
In present embodiment, as carbon black (CB), the carbon black for the use of partial size being 18~25nm.More preferably 19~24nm,
Further preferably 20~23nm.
In addition, the partial size of CB can be sought by observing the section of tyre surface with transmission electron microscope (TEM).
It as such CB, specifically, can enumerate N220 (ASTM code name), pass through addition particle diameter like this
CB, it can be ensured that, reinforced rubber big with the contact area of rubber constituent.
Then, such CB of 50~65 mass parts is added by the rubber constituent relative to 100 mass parts, it can will be
Tan δ at 100 DEG C is adjusted to 0.16 hereinafter, can inhibit fever when driving.Relative to the rubber constituent of 100 mass parts, in this way
The additive amount of CB be more preferably 52~63 mass parts, further preferably 54~61 mass parts.
In addition, other than above-mentioned CB, the CB of other partial sizes of 5 mass parts degree can also be added in present embodiment.
At this point, the BET specific surface area of CB is preferably 40~300m2/ g can be gone back while ensuring rubbery intensity accordingly
Ensure sufficient dispersibility.More preferably 50~280m2/ g, further preferably 60~260m2/g。
In addition, the BET specific surface area of CB can be for example, by measuring according to the method for JIS K6217-2:2001.
In addition, from obtaining from the point of view of adequately reinforcing, freedom from cracking growth property is excellent, and from inhibiting the hard of rubber
From the point of view of degree, low heat generation are excellent, the N2 adsorption specific surface area (N of CB2It SA) is preferably 20~70m2/ g, more preferably 25
~60m2/ g, further preferably 25~40m2/g。
In addition, the N2 adsorption specific surface area of CB can be for example, by measuring according to the method for JIS K6217-2:2001.
(c) other formula materials
In present embodiment, in addition to the materials noted above, can also add as described below usually makes in Tire production
Additive.
As antiaging agent, hexichol amine system can be used (to (tolysulfonyl amido)-diphenylamines, octylated diphenylamine
Deng), (N- (1,3- dimethylbutyl)-N '-phenyl-pphenylenediamine (6PPD), N- isopropyl-N '-phenyl-are right for p-phenylenediamine system
Phenylenediamine (IPPD), N,-two -2- naphthyl p-phenylenediamine of N ' etc.) etc., as a specific example, it is new imperial palace can be enumerated
Learn " NOCRAC 6C " (N- phenyl-N'- (1, the 3- dimethylbutyl) p-phenylenediamine) etc. of society's manufacture in Xinghua.
As oil, can be used such as operation oil, vegetable fat and their mixture.It, can be with as operation oil
Enumerate chain methane series operation oil, naphthene series operation oil, aromatic system operation oil etc..In addition, castor can be enumerated as vegetable fat
Sesame oil, cottonseed oil, linseed oil, rapeseed oil, soybean oil, palm oil, coconut oil, peanut oil, rosin, pine tar, pine tar, Carvedilol
Oil, corn oil, rice bran oil, sesame oil, safflower oil (safflower oil), olive oil, sunflower oil, palm-kernel oil, camellia
Oil, jojoba oil, macadimia nut oil, safflower oil, tung oil etc..It, can be with as an example of specific aromatic system operation oil
Enumerate " VIVATEC 500 " of the manufacture of H&R company.
As sulfiding reagent, the sulphur and vulcanization accelerator of vulcanizing agent can be suitably used as.
As sulphur, powder sulphur can be used, the another dispersibility in view of in rubber is, it is preferable to use oil processing powder sulphur.
As vulcanization accelerator, the vulcanization usually combined and used with powder sulphur in rubber industry can be used and promote
Agent, as specific vulcanization accelerator, it can be mentioned, for example sulfenyl amine system, thiazole system, thiuram system, thiocarbamide system, guanidine system, two sulphur
For carbamic acid system, aldehyde-amine system or aldehyde-ammonia system, imidazoline system or xanthates system vulcanization accelerator, both can be used alone,
It can also be used in combination with two or more.As an example of specific sulfenyl amine system vulcanization accelerator, it is emerging imperial palace can be enumerated
" Nocceler NS " (the N- tert-butyl -2-[4-morpholinodithio base sulfenamide) of chemical commercial firm's manufacture.
In addition, as vulcanization accelerator additive, it is possible to use zinc oxide, stearic acid etc..
When having the rubber composition of above-mentioned each formula materials using allotment, it can be ensured that the contact area with rubber constituent
Greatly, reinforced rubber, while the tan δ at 100 DEG C can be modulated into 0.16 tread rubber composition below.
In addition, viscoplasticity spectrometer VES can be used in the tan δ at 100 DEG C, and (this production of (strain) rock is made among above-mentioned
Make), it is measured under conditions of 100 DEG C of temperature, frequency 10Hz, initial strain 10% and dynamic strain 2%.
Then, by using such tread rubber composition, be set to the shape of above-mentioned tyre surface, suitable use can be provided
It is installed on the tire of the tire of the front-wheel of industrial vehicle, which can play synergy, adherence properties needed for maintaining front-wheel
While energy, wearability is excellent.
2. second embodiment
The tire of present embodiment is that outer diameter is 500~550mm and is installed on the industrial vehicle use of the rear-wheel of industrial vehicle
Puffer-type buffering tyre.
As noted previously, as the tyre surface of the rear-wheel as operation wheel is mainly by the power by turning bring width direction
Effect lead to the generation of cracking so pattern block deforms in the direction of the width when turning, generate abrasion, while softening of generating heat.
About the tire of present embodiment, the pattern block of width direction is rigidly big, and excellent as resistance to explosion property
Tire, be the contact area (cm of tyre surface2) × block height (mm) is 3000~4000 and the width direction flower of tyre surface
Line block is rigidly the tire of 2000~3000N/mm.Moreover, the tyre surface about such tire, the rubber relative to 100 mass parts
The carbon black that the partial size that glue ingredient contains 20~55 mass parts is 25~35nm, and the rubber constituent relative to 100 mass parts contains
There is the butadiene rubber of 10~40 mass parts, the tan δ at 100 DEG C is below 0.15.
By being set as such composition, the wheel for being suitable for use as being installed on the tire of rear-wheel of industrial vehicle can be provided
Tire, each important document of the tire synergistically play effect, even if tire greatly deforms in the direction of the width in turning, can also inhibit
The generation of cracking inhibits abrasion, while can inhibit to generate heat.
(1) shape of tyre surface
In the present embodiment, also based on contact area (cm2The size of) × block height (mm) is spent to set tyre surface
Line.Specifically, with contact area (cm2) × block height (mm) is set as 3000~4000 mode.More preferably
3200~3800, further preferably 3400~3600.
Additionally, it is preferred that contact area is in 190cm2More than, block height is in 20mm hereinafter, in such a situa-tion, leading to
It crosses with above-mentioned contact area (cm2The value of) × block height (mm) is set as 3000~4000 mode, Ke Yichong
The wearability for dividing ground to improve tire.
Moreover, as tread-rubber, the use of width direction pattern block being rigidly 2000~3000N/mm in present embodiment
And the tan δ at 100 DEG C is in 0.15 tread-rubber below.By width direction pattern block is rigidly set as 2000~
3000N/mm also can inhibit the generation of cracking even if tire greatly deforms in the direction of the width in turning, inhibit abrasion.
More preferably 2100~2900N/mm, further preferably 2200~2800N/mm.In addition, by by the tan δ at 100 DEG C
0.15 is set in hereinafter, the explosion of the rubber caused by generating heat can be inhibited.More preferably 0.14 hereinafter, further preferably
0.13 hereinafter, further preferably 0.12 hereinafter, still further preferably be 0.11 or less.
In addition, above-mentioned width direction pattern block rigidly can be in the same manner as the measurement of circumferential pattern block rigidity shown in Fig. 2
It is measured.Specifically, the M in Fig. 2, can be by being set as the width of pattern block 31 by above-mentioned width direction pattern block rigidity
Degree, the load F in Fig. 2 is set as to act on the load of width direction, acts on width direction in the tyre surface of pattern block 31
Load F moves the ratio between distance △ F/ △ and seeks with inclined in the direction of the width.
(2) formula materials of tread rubber composition
In present embodiment, it is possible to use formula materials substantially identical with above-mentioned front-wheel tire.
Wherein, in present embodiment, the amount of the BR rubber added in rubber constituent is set as 10~40 mass parts.More preferably
For 12~30 mass parts, further preferably 14~25 mass parts.
Moreover, in present embodiment, as carbon black, the carbon black for the use of partial size being 25~35nm.More preferably 26~34nm,
Further preferably 27~33nm.
The CB for being 25~35nm as partial size, can enumerate N330 (ASTM code name).
It, can be with moreover, by the such CB for being properly added 20~55 mass parts relative to the rubber constituent of 100 mass parts
Tan δ at 100 DEG C is adjusted to 0.15 hereinafter, can inhibit fever when driving.Relative to the rubber constituent of 100 mass parts,
The additive amount of such CB, lower limit are more preferably 25 mass parts or more, more than further preferably 30 mass parts.In addition, phase
For the rubber constituent of 100 mass parts, the additive amount of such CB, the upper limit is more preferably 50 below the mass, further excellent
It is selected as 45 below the mass.
In addition, at this point, carbon black that partial size is 25~35nm can also be added by the ratio (mass ratio) of 1:1 and partial size be 18~
The carbon black of 25nm makes the total amount of the carbon black of the rubber constituent relative to 100 mass parts become 50~70 mass parts.In addition, opposite
In the rubber constituent of 100 mass parts, the total amount of carbon black is preferably 50~65 mass parts, more preferably 50~60 mass parts, into one
Step is preferably 55~60 mass parts.
In addition, the carbon black for being 18~25nm as partial size, can enumerate N220 (ASTM code name).
By being properly added above-mentioned each formula materials, it can be ensured that with the contact area of rubber constituent is big, reinforced rubber, together
When tan δ when can be provided in 100 DEG C in 0.15 tread rubber composition below.
Then, by using such tread rubber composition, be tuned into the shape of above-mentioned tyre surface, can provide and be suitable for use as
It is installed on the tire of the tire of the rear-wheel of industrial vehicle, according to the tire, synergy can be played, even if tire exists in turning
It is greatly deformed in width direction, also can inhibit the generation of cracking, inhibits abrasion, while can inhibit fever.
Embodiment
Hereinafter, further illustrating the present invention based on embodiment.
1. the production of test body
Firstly, being respectively formulated content shown in formula No.1~formula No.10 based on table 1, tyre surface rubber group is made
Close object.In addition, recording tan δ under the conditions of 100 DEG C, 10Hz measured in each rubber composition together in table 1.
Each formula materials shown in table 1 are described in detail below.
NR:TSR20
The SBR1502 of SBR:JSR society manufacture
The BR150B of BR: Yu Buxingchan commercial firm manufacture
Rubber powder: the powdered rubber powder W2-A (vulcanized rubber powders of 30 mesh) of Asahi reclaimed rubber company manufacture
Carbon black 1: the SHOBLACK N220 of Showa Cabot Co., Ltd manufacture
Carbon black 2: the SHOBLACK N330 of Showa Cabot Co., Ltd manufacture
Antiaging agent: the NOCRAC 6C of the emerging chemical industry commercial firm manufacture of imperial palace
Stearic acid: the pearl stearic acid Tsubaki of Japanese grease commercial firm manufacture
Zinc oxide: the zinc oxide of mining industry commercial firm of Mitsui Metal Co., Ltd. manufacture
Oil: the VIVATEC 500 of H&R company manufacture
Sulphur: the Seimi of Japanese destructive distillation industry commercial firm (NIPPON KANRYU INDUSTRY CO., LTD.) manufacture
sulfur
Vulcanization accelerator: the Nocceler NS of the emerging chemical industry commercial firm manufacture of imperial palace
[table 1]
| Cooperate No. (PHR) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| NR | 75 | 75 | 75 | 75 | 80 | 80 | 90 | 80 | 75 | 80 |
| SBR | 25 | 25 | 25 | 25 | 0 | 0 | 0 | 0 | 0 | 0 |
| BR | 0 | 0 | 0 | 0 | 20 | 20 | 10 | 20 | 25 | 20 |
| Rubber powder | 10 | 10 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 |
| CB1 | 0 | 50 | 60 | 65 | 50 | 60 | 30 | 30 | 30 | 0 |
| CB2 | 60 | 0 | 0 | 0 | 0 | 0 | 30 | 30 | 30 | 55 |
| Antiaging agent | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Stearic acid | 4 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 2 |
| Zinc oxide | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| Oil | 15 | 15 | 15 | 15 | 10 | 10 | 10 | 10 | 10 | 10 |
| Sulphur | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Vulcanization accelerator | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 100℃tanδ | 0.165 | 0.14 | 0.145 | 0.15 | 0.13 | 0.135 | 0.13 | 0.12 | 0.12 | 0.11 |
Then, using rubber composition obtained, as shown in table 2, table 3, tread contour (contact area × pattern block is changed
Highly), the automobile-used front tyre (size 7.00-12: outer diameter 669mm) of manufacture forklift and rear tyre (size 6.00-9:
Outer diameter 538mm) (N=6 is only).
In addition, in front tyre, being set as contact area (cm about tread contour2) × block height (mm) is
This 2 kinds of 260 × 18 (decorative pattern A) and 285 × 21 (decorative pattern B), in rear tyre, are set as contact area (cm2) × pattern block
Highly (mm) is this 2 kinds of 187 × 16 (decorative pattern C) and 205 × 17 (decorative pattern D).
2. evaluation
(1) evaluation method
Then, to each tire, pattern block rigidity (circumferential direction and width direction) is measured, and is installed on fork truck
In, evaluation life performance (when in front tyre to keep straight on, when in rear tyre to turn).
About the evaluation of life performance, each tire is installed on fork truck, and (L&F commercial firm of Toyota is manufactured, 8FG25
(2.5t vehicle)) then travel it on mattess, travel it 3 months with 1 day average 20 hour, from completion 3
The abrasion loss at the time point that the moon travels estimates time until residual ditch becomes 0, using the time as the service life.In addition, about
Evaluation, by indicating that numerical value is bigger using the service life of experimental example 1, experimental example 11 as previous example for 100 relative indices, then
Indicate that performance is more excellent.
(2) evaluation result
(a) evaluation result of front-wheel
It is in front tyre evaluation result is shown in table 2.In addition, experimental example 5~9 is embodiment, experimental example 1~4 in table 2
It is comparative example with experimental example 10.
[table 2]
(b) evaluation result of rear-wheel
It is in rear tyre evaluation result is shown in table 3.In addition, experimental example 16~19 is embodiment, experimental example 11 in table 3
~15 be comparative example.
[table 3]
According to table 2, table 3 it is found that considering by formula to tread-rubber and tire tread form, effect is played to tunable
Fruit greatlys improve the wearability of tire, improves tyre life.
More than, based on embodiment, the present invention will be described, but present invention is not limited to the embodiments described above.With this
In the equivalent and impartial range of invention, above-described embodiment can be made various changes.
Claims (8)
1. a kind of industrial vehicle Puffer-type buffering tyre, outer diameter is 650~700mm, is installed on the front-wheel of industrial vehicle,
It is characterized in that,
Contact area × block height of tyre surface is 5500~6500, and the unit of the contact area is cm2, the pattern block
The unit of height is mm；The circumferential pattern block of tyre surface is rigidly 3100~4000N/mm,
In the rubber composition for constituting the tyre surface, relative to the rubber constituent of 100 mass parts, the grain containing 50~65 mass parts
Diameter is the carbon black of 18~25nm；Loss angle tangent of the rubber composition at 100 DEG C is below 0.16.
2. industrial vehicle according to claim 1 Puffer-type buffering tyre, which is characterized in that
The rubber constituent for constituting the rubber composition of the tyre surface contains natural rubber and butadiene rubber,
Rubber constituent of the content of the butadiene rubber relative to 100 mass parts is 10~40 mass parts.
3. according to claim 1 or industrial vehicle as claimed in claim 2 Puffer-type buffering tyre, which is characterized in that
The contact area is in 280cm2More than, the block height is in 23mm or less.
4. a kind of industrial vehicle Puffer-type buffering tyre, outer diameter is 500~550mm, is installed on the rear-wheel of industrial vehicle,
It is characterized in that,
Contact area × block height of tyre surface is 3000~4000, and the unit of the contact area is cm2, the pattern block
The unit of height is mm；The width direction pattern block of tyre surface is rigidly 2000~3000N/mm,
In the rubber composition for constituting the tyre surface, relative to the rubber constituent of 100 mass parts, the grain containing 20~55 mass parts
Diameter is the carbon black of 25~35nm, and the rubber constituent relative to 100 mass parts, the butadiene rubber containing 10~40 mass parts；
Loss angle tangent of the rubber composition at 100 DEG C is below 0.15.
5. industrial vehicle according to claim 4 Puffer-type buffering tyre, which is characterized in that relative to 100 mass parts
Rubber constituent, the content for the carbon black that the partial size is 25~35nm is 30~55 mass parts.
6. industrial vehicle according to claim 4 Puffer-type buffering tyre, which is characterized in that
In the rubber composition for constituting the tyre surface, it is 25~35nm that the mass ratio with ratio for 1:1, which is added with the partial size,
Carbon black and partial size be 18~25nm carbon black,
Relative to the rubber constituent of 100 mass parts, the total amount of carbon black is 50~70 mass parts.
7. industrial vehicle according to claim 6 Puffer-type buffering tyre, which is characterized in that relative to 100 mass parts
Rubber constituent, the total amount of carbon black is 50~65 mass parts.
8. according to claim 4 or industrial vehicle as claimed in claim 6 Puffer-type buffering tyre, which is characterized in that
The contact area is in 190cm2More than, the block height is in 20mm or less.
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| CN111944208A (en) * | 2019-05-17 | 2020-11-17 | 住友橡胶工业株式会社 | Rubber composition for tread and tire |
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| CN109306082B (en) | 2022-07-15 |
| JP2019026251A (en) | 2019-02-21 |
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