CN109535503A - A kind of high durometer rubber and its calendering process - Google Patents
A kind of high durometer rubber and its calendering process Download PDFInfo
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- CN109535503A CN109535503A CN201811425259.5A CN201811425259A CN109535503A CN 109535503 A CN109535503 A CN 109535503A CN 201811425259 A CN201811425259 A CN 201811425259A CN 109535503 A CN109535503 A CN 109535503A
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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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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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
- C08K3/18—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
- C08K2201/014—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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
Abstract
The invention discloses a kind of high durometer rubber and its calendering process, it is as follows that the high durometer rubber measures contained each component in parts by weight: 30 ~ 70 parts of Natural rubber -3L, 1,502 30 ~ 70 parts of styrene butadiene rubber sbr, 60 ~ 85 parts of carbon black N330,40 ~ 60 parts of carbon black N550,10 ~ 30 parts of white carbon black, 5 ~ 20 parts of aromatic naphtha, 3 ~ 6 parts of zinc oxide, 1 ~ 3 part of stearic acid, 3 ~ 6 parts of coumarone indene resin, antiaging agent RD1 ~ 2.5 part, it 0.5 ~ 1.5 part of microwax, is prepared using three-stage mixing technique.By the above-mentioned means, the present invention makes in mixing process sizing material heating slow by optimization sizing material composition of raw materials, and using segmentation mixed refining process, sizing material Mooney viscosity is low, good fluidity, can effectively improve the product qualified rate of high durometer rubber.
Description
Technical field
The present invention relates to compounding rubber processing technique fields, more particularly to a kind of high durometer rubber and its calendering process.
Background technique
Rubber industry obtained in recent decades it is considerable steadily develop, the status in national economy is increasingly heavier
It wants, is the grand strategy goods and materials of country.In national defence, space flight, naval vessels, traffic, industry is agriculture, civilian etc. to suffer from extensively
Application.
The conventional hardness of rubber product is 40-80 degree shore hardness, greater than the mixing work of rubber more than 80 shore hardnesses
Skill difficulty is larger, and generally existing sizing material heat is too fast in mixing process, sizing material Mooney viscosity is excessively high, rubber mobility is poor etc. lacks
It falls into, so that product qualified rate is low.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of high durometer rubber and its calendering process, by optimizing sizing material
Composition of raw materials, and using segmentation mixed refining process, makes in mixing process sizing material heating slow, and sizing material Mooney viscosity is low, good fluidity, energy
Enough effectively improve the product qualified rate of high durometer rubber.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of high durometer rubber is provided, by weight
It is as follows to measure the contained each component of number metering:
30 ~ 70 parts of Natural rubber -3L,
1,502 30 ~ 70 parts of styrene butadiene rubber sbr,
60 ~ 85 parts of carbon black N330,
40 ~ 60 parts of carbon black N550,
10 ~ 30 parts of white carbon black,
5 ~ 20 parts of aromatic naphtha,
3 ~ 6 parts of zinc oxide,
1 ~ 3 part of stearic acid,
3 ~ 6 parts of coumarone indene resin,
1 ~ 2.5 part of antiaging agent RD,
0.5 ~ 1.5 part of microwax.
In a preferred embodiment of the present invention, it is as follows to measure contained each component in parts by weight for the high durometer rubber:
70 parts of Natural rubber -3L,
1,502 30 parts of styrene butadiene rubber sbr,
75 parts of carbon black N330,
50 parts of carbon black N550,
20 parts of white carbon black,
10 parts of aromatic naphtha,
5 parts of zinc oxide
2 parts of stearic acid,
5 parts of coumarone indene resin,
1.5 parts of antiaging agent RD,
0.5 part of microwax.
In order to solve the above technical problems, the present invention also provides a kind of calendering process of high durometer rubber, including walk as follows
It is rapid:
Step 1, one section of mixing:
70 parts of Natural rubber -3L, 40 parts of carbon black N330,20 parts of white carbon blacks are added in mixer after mixing, 150 DEG C ~
It is kneaded 5 ~ 6 minutes heel row at a temperature of 160 DEG C expects and slightly refined in big open mill 3 ~ 5 minutes, then refining 2 ~ 4 in discharge to small open mill
Minute, last slice obtains one section of rubber compound NR-1；
Step 2, two-stage mixing:
One section of rubber compound NR-1 made from step 1 and 35 parts of carbon black N330,25 parts of carbon black N550,5 parts of aromatic naphtha are mixed, according to
It according to the method for step 1, is successively slightly refined through mixer mixing, big open mill, the refining of small open mill, last slice obtains two sections and mixes
Refining glue NR-2；
Step 3, three-stage mixing:
By 1502,25 parts of carbon black N550 of two-stage mixing glue NR-2 made from step 2 and 30 parts of styrene butadiene rubber sbrs, 5 parts of aromatic naphtha,
5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part of microwax mixing, according to step 1
Method, successively slightly refined through mixer mixing, big open mill, the refining of small open mill, last slice obtains high durometer rubber NR.
In a preferred embodiment of the present invention, it needs to stand after one section of rubber compound NR-1 slice and park 8 hours or more,
It is mixed again with 35 parts of carbon black N330,25 parts of carbon black N550,5 parts of aromatic naphtha；It also needs to stand after the two-stage mixing glue NR-2 slice
Park 8 hours or more, then with 30 parts of styrene butadiene rubber sbrs, 1502,25 parts of carbon black N550,5 parts of aromatic naphtha, 5 parts of zinc oxide, 2 parts it is hard
Resin acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part of microwax mixing.It stands and parks 8 hours after rubber compound slice
On, to guarantee the dispersion wellability of sizing material, it can be further improved and eliminate some internal stress after being kneaded, while allowing the door of sizing material
Buddhist nun's viscosity reaches due level, during subsequent further mixed refining process, can preferably reduce the Mooney viscosity of sizing material.
In a preferred embodiment of the present invention, the mixer uses 190L frequency control falling type mixer, is kneaded
The revolving speed that the mixer is arranged in the process is 30 ~ 45r/min.
In a preferred embodiment of the present invention, the big open mill is opened using 28 cun of double hydraulic automatic distance-adjustings of frequency control
Mill, the revolving speed that the big open mill is arranged in mixing process is 30 ~ 40 r/min.
In a preferred embodiment of the present invention, the small open mill uses the hydraulic automatic distance-adjusting mill of 16 cun of frequency controls
Machine, the revolving speed that the small open mill is arranged in mixing process is 25 ~ 40 r/min.
The beneficial effects of the present invention are: formula of the present invention by optimization sizing material, and processed using three-stage mixing, it can keep away
It is too fast to exempt from sizing material heating, and the Mooney viscosity of sizing material can be reduced, improves rubber mobility, makes rubber compounding more abundant, effectively
Improve the product qualified rate of high durometer rubber.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
The embodiment of the present invention includes:
Embodiment 1:NR90 degree
90 degree of high durometer rubbers are prepared using three-stage mixing technique, step includes:
One section of mixing:
It is added in mixer after 70 parts of Natural rubber -3L, 40 parts of carbon black N330,20 parts of white carbon blacks are mixed, in 150 DEG C of temperature
6 minutes heel row of the lower mixing of degree are expected slightly refines 5 minutes in big open mill, then refining 4 minutes in discharge to small open mill, last slice
Obtain one section of rubber compound NR90-1；
Step 2, two-stage mixing:
After one section of rubber compound NR90-1 standing made from step 1 is parked 8 hours, with 35 parts of carbon black N330,25 parts of carbon blacks
N550,5 parts of aromatic naphtha mixing are successively slightly refined through mixer mixing, big open mill, small open mill essence according to the method for step 1
Refining, last slice obtain two-stage mixing glue NR90-2；
Step 3, three-stage mixing:
After the standing of two-stage mixing glue NR90-2 made from step 2 is parked 8 hours, with 30 parts 1502,25 parts of styrene butadiene rubber sbr
Carbon black N550,5 parts of aromatic naphtha, 5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part it is micro-
Brilliant wax mixing is successively slightly refined through mixer mixing, big open mill, the refining of small open mill, last slice according to the method for step 1
Obtain 90 degree of high durometer rubber NR-90.
Wherein, the mixer uses 190L frequency control falling type mixer, and the mixer is arranged in mixing process
Revolving speed be 35r/min；The big open mill uses 28 cun of hydraulic automatic distance-adjusting open mills of double frequency controls, sets in mixing process
The revolving speed for setting the big open mill is 30 r/min；The small open mill uses the hydraulic automatic distance-adjusting mill of 16 cun of frequency controls
Machine, the revolving speed that the small open mill is arranged in mixing process is 25r/min.
Embodiment 2:NR85 degree
85 degree of high durometer rubbers are prepared using three-stage mixing technique, step includes:
One section of mixing:
It is added in mixer after 70 parts of Natural rubber -3L, 40 parts of carbon black N330,20 parts of white carbon blacks are mixed, in 155 DEG C of temperature
6 minutes heel row of the lower mixing of degree are expected slightly refines 4 minutes in big open mill, then refining 3 minutes in discharge to small open mill, last slice
Obtain one section of rubber compound NR85-1；
Step 2, two-stage mixing:
After one section of rubber compound NR85-1 standing made from step 1 is parked 9 hours, with 25 parts of carbon black N330,25 parts of carbon blacks
N550,5 parts of aromatic naphtha mixing are successively slightly refined through mixer mixing, big open mill, small open mill essence according to the method for step 1
Refining, last slice obtain two-stage mixing glue NR85-2；
Step 3, three-stage mixing:
After two-stage mixing glue NR85-2 made from step 2 is stood 9 hours, with 30 parts of styrene butadiene rubber sbrs, 1502,20 parts of carbon blacks
N550,5 parts of aromatic naphtha, 5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part of microwax
Mixing is successively slightly refined through mixer mixing, big open mill, the refining of small open mill, according to the method for step 1 finally from small mill
Machine slice obtains 85 degree of high durometer rubber NR85.
Wherein, the mixer uses 190L frequency control falling type mixer, and the mixer is arranged in mixing process
Revolving speed be 40r/min；The big open mill uses 28 cun of hydraulic automatic distance-adjusting open mills of double frequency controls, sets in mixing process
The revolving speed for setting the big open mill is 35 r/min；The small open mill uses the hydraulic automatic distance-adjusting mill of 16 cun of frequency controls
Machine, the revolving speed that the small open mill is arranged in mixing process is 30r/min.
Embodiment 3:NR95 degree
95 degree of high durometer rubbers are prepared using three-stage mixing technique, step includes:
One section of mixing:
It is added in mixer after 60 parts of Natural rubber -3L, 50 parts of carbon black N330,30 parts of white carbon blacks are mixed, in 160 DEG C of temperature
Lower be kneaded in discharge to big open mill after five minutes of degree is slightly refined 5 minutes, then refining 4 minutes in discharge to small open mill, last slice
Obtain one section of rubber compound NR95-1；
Step 2, two-stage mixing:
After one section of rubber compound NR95-1 standing made from step 1 is parked 10 hours, with 35 parts of carbon black N330,30 parts of carbon blacks
N550,3 parts of aromatic naphtha mixing are successively slightly refined through mixer mixing, big open mill, small open mill essence according to the method for step 1
Refining, slice obtain two-stage mixing glue NR95-2；
Step 3, three-stage mixing:
After the standing of two-stage mixing glue NR95-2 made from step 2 is parked 10 hours, with 40 parts 1502,30 parts of styrene butadiene rubber sbr
Carbon black N550,5 parts of aromatic naphtha, 5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part it is micro-
Brilliant wax mixing is successively slightly refined through mixer mixing, big open mill, the refining of small open mill, according to the method for step 1 finally from small
Open mill slice obtains 95 degree of high durometer rubber NR95.
Wherein, the mixer uses 190L frequency control falling type mixer, and the mixer is arranged in mixing process
Revolving speed be 30r/min；The big open mill uses 28 cun of hydraulic automatic distance-adjusting open mills of double frequency controls, sets in mixing process
The revolving speed for setting the big open mill is 30 r/min；The small open mill uses the hydraulic automatic distance-adjusting mill of 16 cun of frequency controls
The revolving speed 25r/min of the small open mill is arranged in mixing process for machine.
High durometer rubber made from embodiment 1 ~ 3 is added to the physical property measured after sulphur are as follows:
Embodiment 1:NR90
Hardness: 91A,
Tensile strength: 16.5MPA,
Elongation at break: 178%,
Density: 1.31G/CM3。
Embodiment 2:NR85
Hardness: 86A,
Tensile strength: 17.3MPA,
Elongation at break: 232%,
Density: 1.30G/CM3。
Embodiment 3:NR95
Hardness: 94A,
Tensile strength: 14.6MPA,
Elongation at break: 148%,
Density: 1.33G/CM3。
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (8)
1. a kind of high durometer rubber, which is characterized in that it is as follows to measure contained each component in parts by weight:
30 ~ 70 parts of Natural rubber -3L,
1,502 30 ~ 70 parts of styrene butadiene rubber sbr,
60 ~ 85 parts of carbon black N330,
40 ~ 60 parts of carbon black N550,
10 ~ 30 parts of white carbon black,
5 ~ 20 parts of aromatic naphtha,
3 ~ 6 parts of zinc oxide,
1 ~ 3 part of stearic acid,
3 ~ 6 parts of coumarone indene resin,
1 ~ 2.5 part of antiaging agent RD,
0.5 ~ 1.5 part of microwax.
2. high durometer rubber as described in claim 1, which is characterized in that it is as follows to measure contained each component in parts by weight:
70 parts of Natural rubber -3L,
1,502 30 parts of styrene butadiene rubber sbr,
75 parts of carbon black N330,
50 parts of carbon black N550,
20 parts of white carbon black,
10 parts of aromatic naphtha,
5 parts of zinc oxide
2 parts of stearic acid,
5 parts of coumarone indene resin,
1.5 parts of antiaging agent RD,
0.5 part of microwax.
3. a kind of calendering process of high durometer rubber, which comprises the steps of:
Step 1, one section of mixing:
70 parts of Natural rubber -3L, 40 parts of carbon black N330,20 parts of white carbon blacks are added in mixer after mixing, 150 DEG C ~
It is kneaded 5 ~ 6 minutes heel row at a temperature of 160 DEG C expects and slightly refined in big open mill 3 ~ 5 minutes, then refining 2 ~ 4 in discharge to small open mill
Minute, last slice obtains one section of rubber compound NR-1；
Step 2, two-stage mixing:
One section of rubber compound NR-1 made from step 1 and 35 parts of carbon black N330,25 parts of carbon black N550,5 parts of aromatic naphtha are mixed, according to
It according to the method for step 1, is successively slightly refined through mixer mixing, big open mill, the refining of small open mill, last slice obtains two sections and mixes
Refining glue NR-2；
Step 3, three-stage mixing:
By 1502,25 parts of carbon black N550 of two-stage mixing glue NR-2 made from step 2 and 30 parts of styrene butadiene rubber sbrs, 5 parts of aromatic naphtha,
5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part of microwax mixing, according to step 1
Method, successively slightly refined through mixer mixing, big open mill, the refining of small open mill, last slice obtains high durometer rubber NR.
4. the calendering process of high durometer rubber as claimed in claim 3, which is characterized in that one section of rubber compound NR-1 slice
After need to stand and park 8 hours or more, then mixed with 35 parts of carbon black N330,25 parts of carbon black N550,5 parts of aromatic naphtha.
5. the calendering process of high durometer rubber as claimed in claim 3, which is characterized in that the two-stage mixing glue NR-2 slice
Also need afterwards stand park 8 hours or more, then with 30 parts of styrene butadiene rubber sbrs, 1502,25 parts of carbon black N550,5 parts of aromatic naphtha, 5 parts of oxygen
Change zinc, 2 parts of stearic acid, 5 parts of coumarone indene resins, 1.5 parts of antiaging agent RD, 0.5 part of microwax mixing.
6. the calendering process of high durometer rubber as claimed in claim 3, which is characterized in that the mixer uses 190L frequency conversion
Falling type mixer is adjusted the speed, the revolving speed that the mixer is arranged in mixing process is 30 ~ 45r/min.
7. the calendering process of high durometer rubber as claimed in claim 3, which is characterized in that the big open mill is double using 28 cun
The hydraulic automatic distance-adjusting open mill of frequency control, the revolving speed that the big open mill is arranged in mixing process is 30 ~ 40 r/min.
8. calendering process as claimed in claim 3, which is characterized in that the small open mill is hydraulic certainly using 16 cun of frequency controls
Roll adjustment open mill is moved, the revolving speed that the small open mill is arranged in mixing process is 25 ~ 40 r/min.
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Application publication date: 20190329 |