CN109627526A - Heat-resisting mould proof rectangular loop of one kind and preparation method thereof - Google Patents
Heat-resisting mould proof rectangular loop of one kind and preparation method thereof Download PDFInfo
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- CN109627526A CN109627526A CN201811591660.6A CN201811591660A CN109627526A CN 109627526 A CN109627526 A CN 109627526A CN 201811591660 A CN201811591660 A CN 201811591660A CN 109627526 A CN109627526 A CN 109627526A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
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Abstract
The present invention relates to a kind of heat-resisting mould proof rectangular loops and preparation method thereof, and the constituent of the rectangular loop includes following parts by weight raw material: 30-45 parts of butadiene-styrene rubber, 25-35 parts of neoprene, 5-15 parts of natural rubber, modified galapectite 5-10 parts, 3-7 parts of sericite, 1-4 parts of kaolin, 2-6 parts of carbon black, 1-4 parts of methacrylic acid dibutyl tin ester, 0.5-2 parts of ammonium polyphosphate, 0.5-2.5 parts of silane coupling agent, 0.1-0.5 parts of mould inhibitor；In the present invention, galapectite is a kind of natural many walls nanotube shape material, galapectite prepares composite rubber material by vinyltrimethoxysilane is modified, vinyl occurs co-vulcanization with rubber material in sulfidation and reacts, and then improve the crosslink density of rectangular loop rubber material, and the interface binding power between rubber material and galapectite is enhanced, the comprehensive mechanical property of rectangular loop is enhanced.
Description
Technical field
The present invention relates to technical field of rubber material, and in particular to heat-resisting mould proof rectangular loop of one kind and preparation method thereof.
Background technique
Rectangular seal belongs to special-shaped seal ring, and existing rectangular seal performance is single, and the raw material for preparing it is single, cannot
Meet the increasingly increased diversified demand to rectangular seal.
Rectangular loop has use, such as automobile clutch in many components of automobile as the common components of automobile
Deng, but in use, many reasons such as impurity is more because temperature is higher, in environment, so that rectangular loop is in use
Phenomena such as aging easily occurs, greatly increases maintenance cost.The process of existing production rectangular loop includes being kneaded, squeezing
Out, vulcanization etc. processing steps, wherein glue kind used by mixing step be butylbenzene or natural rubber, then cooperate sulphur, promotor,
The auxiliary materials such as zinc oxide, stearic acid, carbon black, light calcium, naphthenic oil, anti-aging agent.
For obtaining a kind of sealing rubber ring, including following weight in patent application CN104962071A disclosed in the China
The raw material of number: nitrile rubber, polyether types of polyurethane rubber, stearic acid, hydroxy silicon oil, zinc oxide part, copper powder, conductive black
Part, pitch, diethylene glycol (DEG), zinc stearate, presses down white glue at captax；Through a kind of sealing rubber ring provided by the invention, performance is stable,
Anticorrosive, antipollution, high temperature resistant, tensile strength are high, elongation is high, and have excellent anti-flammability and insulating properties, stretch
Intensity improves 64% compared with prior art.
Disclosed in the China in patent application CN104629212A for obtain a kind of antimildew and antibacterial pvc material and
Preparation method is formulated by the raw material of following parts by weight: Corvic 190-200, poly terephthalic acid second two
Alcohol ester 12-14, Magnesium dilaurate 6-8, polysulfide rubber 3-5, octyl ester of epoxy fatty acid 7-8, stearic acid 5-7, styrol copolymer 4-
6, electrically conductive graphite 7-9, silane coupling agent 7-8, triethyltin chloride 4-5, nano silver 12-14, basic zirconium phosphate 5-6, antioxidant TNP 8-
9, base organic tin stabilizer 0.6-0.8, bi-quaternary ammonium salt 3-5, auxiliary agent 10-12 are flowed.The invention is by nano silica in resin
In it is fully dispersed, effectively improve the performances such as heat-resisting, wear-resisting of pvc material.
But the rectangular loop provided in the prior art often exists and does not have stronger anti-flammability, and comprehensive mechanical property difference lacks
It falls into.
Summary of the invention
In view of the above problems, the invention proposes a kind of heat-resisting mould proof rectangular loops and preparation method thereof.The present invention
The product of offer effectively overcomes defect existing for product in the prior art.
In order to achieve the above purpose, the following technical solution is employed by the present invention:
A kind of heat-resisting mould proof rectangular loop, the constituent of the rectangular loop includes following parts by weight raw material: butadiene-styrene rubber 30-
45 parts, 25-35 parts of neoprene, 5-15 parts of natural rubber, galapectite 5-10 parts modified, 3-7 parts of sericite, 1-4 parts of kaolin,
It is 2-6 parts of carbon black, 1-4 parts of methacrylic acid dibutyl tin ester, 0.5-2 parts of ammonium polyphosphate, 0.5-2.5 parts of silane coupling agent, mould proof
0.1-0.5 parts of agent；
Wherein, the preparation method of modified galapectite includes the following steps:
20-30 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:8-10, delays
Slowly 15-20 parts of vinyltrimethoxysilanes are added, adjusting temperature is 45-48 DEG C, under the speed conditions of 420-450r/min
8-10h is stirred, filtering three times with ethanol washing, is subsequently placed in 80-85 DEG C of baking oven and dries, crushed 280-300 mesh,
Galapectite must be modified.
Preferably, the constituent of the rectangular loop includes following parts by weight raw material: 35-40 parts of butadiene-styrene rubber, neoprene rubber
27-30 parts of glue, 7-12 parts of natural rubber, modified galapectite 6-8 parts, 4-6 parts of sericite, 2-3 parts of kaolin, 3-5 parts of carbon black, first
2-3 parts of base acrylic acid dibutyl tin ester, 1-1.5 parts of ammonium polyphosphate, 1-2 parts of silane coupling agent, 0.2-0.4 parts of mould inhibitor.
Preferably, the constituent of the rectangular loop includes following parts by weight raw material: 36 parts of butadiene-styrene rubber, neoprene 28
Part, 9 parts of natural rubber, modified 7 parts of galapectite, 5 parts of sericite, 2 parts of kaolin, 4 parts of carbon black, methacrylic acid dibutyl tin ester
2 parts, 1 part of ammonium polyphosphate, 1.5 parts of silane coupling agent, 0.3 part of mould inhibitor.
Preferably, silane coupling agent is silane coupling agent WD53, silane coupling agent WD60, silane coupling agent kh550, silane
One or both of coupling agent kh560, silane coupling agent kh570 combination.
Preferably, one or both of mould inhibitor TBQ, FB, LA, LB is combined.
A kind of preparation method of heat-resisting mould proof rectangular loop, comprises the following steps:
(1) it is referred to as solvent using benzene, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and first
Base acrylic acid dibutyl tin ester constant temperature under conditions of 68-70 DEG C is copolymerized, and product is extracted with dehydrated alcohol and removes extra methyl
Acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 350-380 mesh adds
Enter in mixing machine, 20-25min is stirred with certain speed under conditions of 100-105 DEG C, then puts into kneader and mediates 25-
30min, it is spare；
(3) by step (2) products therefrom together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
It being added in open mill, temperature is adjusted to 45-50 DEG C and carries out one section of mixing, mixing time 2-3min then adjusts temperature, into
Row two-stage mixing, mixing time 1-2min, through extruder extrusion molding to get product after.
Preferably, extraction time is 10-12h in step (1).
Preferably, mixing speed is 350-400r/min in step (2).
Preferably, the two-stage mixing time is 80-85 DEG C in step (3).
Using above-mentioned technical solution, the beneficial effects of the present invention are:
Neoprene belongs to metal organohalogen compounds, the active group graft copolymerization with methacrylic acid dibutyl tin ester,
Three-dimensional cotton-shaped network structure is formed, rubber matrix is wrapped up separated, the growth of mycotic spore and mycelia has been obstructed, has played
Good antibacterial property energy.
Galapectite is a kind of natural many walls nanotube shape material, and galapectite passes through the modified system of vinyltrimethoxysilane
Standby composite rubber material, vinyl occurs co-vulcanization with rubber material in sulfidation and reacts, and then improves rectangular loop rubber
The crosslink density of glue material, and the interface binding power between rubber material and galapectite is enhanced, enhance compounded rubber material
The comprehensive mechanical property of material；In addition, modified galapectite and ammonium polyphosphate cooperate, composite inner structure can be made more to step up
It causes, is closely knit, enhancing the flame retardant property of rubber material.
Kaolinite and carbon black are added in natural rubber material, three's coordinated is presented what end face was connected with side
Reunion network is combined with sericite particle, " segmentation of the card room formula space " structure in stereoscopic three-dimensional space is formed, to composite material
The trap effect of matrix is more obvious, improves heat-resisting, the flame retardant property of rectangular rectangle circle.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiment of the present invention, the common skill in this field
Art personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1:
A kind of heat-resisting mould proof rectangular loop, the constituent of the rectangular loop includes following parts by weight raw material: butadiene-styrene rubber 30
Part, 35 parts of neoprene, 5 parts of natural rubber, modified 10 parts of galapectite, 3 parts of sericite, 4 parts of kaolin, 2 parts of carbon black, methyl-prop
4 parts of olefin(e) acid dibutyl tin ester, 0.5 part of ammonium polyphosphate, 2.5 parts of silane coupling agent, 0.1 part of mould inhibitor.
Wherein, the preparation method of modified galapectite includes the following steps:
30 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:8, is slowly added to
20 parts of vinyltrimethoxysilanes, adjusting temperature is 45 DEG C, and 8h is stirred under the speed conditions of 450r/min, filters, uses second
Alcohol washs three times, is subsequently placed in 85 DEG C of baking oven and dries, crushed 280 meshes, obtains modified galapectite.
A kind of preparation method of heat-resisting mould proof rectangular loop comprises the following steps:
(1) it is referred to as solvent using benzene, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and first
Base acrylic acid dibutyl tin ester constant temperature under conditions of 70 DEG C is copolymerized, and product extracts 10h with dehydrated alcohol and removes extra methyl
Acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 380 mesh is added mixed
In conjunction machine, 20min is stirred with the speed of 400r/min under conditions of 100 DEG C, then puts into kneader and mediates 30min, it is standby
With；
(3) by step (2) products therefrom together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
It being added in open mill, temperature is adjusted to 45 DEG C and carries out one section of mixing, mixing time 3min, then adjusting temperature is 80 DEG C,
Carry out two-stage mixing, mixing time 2min, through extruder extrusion molding to get product after.
Embodiment 2:
A kind of heat-resisting mould proof rectangular loop, the constituent of the rectangular loop includes following parts by weight raw material: butadiene-styrene rubber 45
Part, 25 parts of neoprene, 15 parts of natural rubber, modified 5 parts of galapectite, 7 parts of sericite, 1 part of kaolin, 6 parts of carbon black, methyl-prop
1 part of olefin(e) acid dibutyl tin ester, 2 parts of ammonium polyphosphate, 0.5 part of silane coupling agent, 0.5 part of mould inhibitor.
Wherein, the preparation method of modified galapectite includes the following steps:
20 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:10, is slowly added to
15 parts of vinyltrimethoxysilanes, adjusting temperature is 48 DEG C, and 10h is stirred under the speed conditions of 420r/min, filters, uses second
Alcohol washs three times, is subsequently placed in 80 DEG C of baking oven and dries, crushed 300 meshes, obtains modified galapectite.
A kind of preparation method of heat-resisting mould proof rectangular loop comprises the following steps:
(1) it is referred to as solvent using benzene, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and first
Base acrylic acid dibutyl tin ester constant temperature under conditions of 68 DEG C is copolymerized, and product extracts 12h with dehydrated alcohol and removes extra methyl
Acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 350 mesh is added mixed
In conjunction machine, 25min is stirred with the speed of 350r/min under conditions of 105 DEG C, then puts into kneader and mediates 25min, it is standby
With；
(3) by step (2) products therefrom together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
It being added in open mill, temperature is adjusted to 50 DEG C and carries out one section of mixing, mixing time 2min, then adjusting temperature is 85 DEG C,
Carry out two-stage mixing, mixing time 1min, through extruder extrusion molding to get product after.
Embodiment 3:
A kind of heat-resisting mould proof rectangular loop, the constituent of the rectangular loop includes following parts by weight raw material: butadiene-styrene rubber 35
Part, 30 parts of neoprene, 7 parts of natural rubber, modified 8 parts of galapectite, 4 parts of sericite, 3 parts of kaolin, 3 parts of carbon black, methyl-prop
3 parts of olefin(e) acid dibutyl tin ester, 1 part of ammonium polyphosphate, 2 parts of silane coupling agent, 0.2 part of mould inhibitor.
Wherein, the preparation method of modified galapectite includes the following steps:
20 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:10, is slowly added to
15 parts of vinyltrimethoxysilanes, adjusting temperature is 48 DEG C, and 10h is stirred under the speed conditions of 420r/min, filters, uses second
Alcohol washs three times, is subsequently placed in 80 DEG C of baking oven and dries, crushed 280 meshes, obtains modified galapectite.
A kind of preparation method of heat-resisting mould proof rectangular loop comprises the following steps:
(1) it is referred to as solvent using benzene, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and first
Base acrylic acid dibutyl tin ester constant temperature under conditions of 70 DEG C is copolymerized, and product extracts 10h with dehydrated alcohol and removes extra methyl
Acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 380 mesh is added mixed
In conjunction machine, 20min is stirred with the speed of 400r/min under conditions of 100 DEG C, then puts into kneader and mediates 30min, it is standby
With；
(3) by step (2) products therefrom together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
It being added in open mill, temperature is adjusted to 45 DEG C and carries out one section of mixing, mixing time 3min, then adjusting temperature is 80 DEG C,
Carry out two-stage mixing, mixing time 1min, through extruder extrusion molding to get product after.
Embodiment 4:
A kind of heat-resisting mould proof rectangular loop, the constituent of the rectangular loop includes following parts by weight raw material: butadiene-styrene rubber 40
Part, 27 parts of neoprene, 12 parts of natural rubber, modified 6 parts of galapectite, 6 parts of sericite, 2 parts of kaolin, 5 parts of carbon black, methyl-prop
2 parts of olefin(e) acid dibutyl tin ester, 1.5 parts of ammonium polyphosphate, 1 part of silane coupling agent, 0.4 part of mould inhibitor.
Wherein, the preparation method of modified galapectite includes the following steps:
20 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:10, is slowly added to
15 parts of vinyltrimethoxysilanes, adjusting temperature is 45 DEG C, and 8h is stirred under the speed conditions of 450r/min, filters, uses second
Alcohol washs three times, is subsequently placed in 80 DEG C of baking oven and dries, crushed 300 meshes, obtains modified galapectite.
A kind of preparation method of heat-resisting mould proof rectangular loop comprises the following steps:
(1) it is referred to as solvent using benzene, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and first
Base acrylic acid dibutyl tin ester constant temperature under conditions of 70 DEG C is copolymerized, and product extracts 11h with dehydrated alcohol and removes extra methyl
Acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 360 mesh is added mixed
In conjunction machine, 20min is stirred with the speed of 380r/min under conditions of 100 DEG C, then puts into kneader and mediates 30min, it is standby
With；
(3) by step (2) products therefrom together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
It being added in open mill, temperature is adjusted to 50 DEG C and carries out one section of mixing, mixing time 3min, then adjusting temperature is 80 DEG C,
Carry out two-stage mixing, mixing time 1min, through extruder extrusion molding to get product after.
Embodiment 5:
A kind of heat-resisting mould proof rectangular loop, the constituent of the rectangular loop includes following parts by weight raw material: butadiene-styrene rubber 36
Part, 28 parts of neoprene, 9 parts of natural rubber, modified 7 parts of galapectite, 5 parts of sericite, 2 parts of kaolin, 4 parts of carbon black, methyl-prop
2 parts of olefin(e) acid dibutyl tin ester, 1 part of ammonium polyphosphate, 1.5 parts of silane coupling agent, 0.3 part of mould inhibitor.
Wherein, the preparation method of modified galapectite includes the following steps:
25 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:9, is slowly added to
18 parts of vinyltrimethoxysilanes, adjusting temperature is 47 DEG C, and 9h is stirred under the speed conditions of 440r/min, filters, uses second
Alcohol washs three times, is subsequently placed in 82 DEG C of baking oven and dries, crushed 290 meshes, obtains modified galapectite.
A kind of preparation method of heat-resisting mould proof rectangular loop comprises the following steps:
(1) it is referred to as solvent using benzene, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and first
Base acrylic acid dibutyl tin ester constant temperature under conditions of 69 DEG C is copolymerized, and product extracts 12h with dehydrated alcohol and removes extra methyl
Acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 370 mesh is added mixed
In conjunction machine, 25min is stirred with the speed of 390r/min under conditions of 105 DEG C, then puts into kneader and mediates 25min, it is standby
With；
(3) by step (2) products therefrom together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
It being added in open mill, temperature is adjusted to 50 DEG C and carries out one section of mixing, mixing time 2min, then adjusting temperature is 80 DEG C,
Carry out two-stage mixing, mixing time 2min, through extruder extrusion molding to get product after.
Reference examples 1
The raw material of reference examples 1 and preparation process and embodiment 1 are all the same, and difference is only that: being not added with modified galapectite.
Reference examples 2
The raw material of reference examples 2 and preparation process and embodiment 1 are all the same, and difference is only that: being not added with ammonium polyphosphate.
Reference examples 3
The raw material of reference examples 3 and preparation process and embodiment 2 are all the same, and difference is only that: being not added with kaolinite and carbon black.
Reference examples 4
The raw material of reference examples 4 and preparation process and embodiment 2 are all the same, and difference is only that: being not added with sericite.
Reference examples 5
The raw material of reference examples 5 and preparation process and embodiment 3 are all the same, and difference is only that: being not added with neoprene.
Reference examples 6
The raw material of reference examples 6 and preparation process and embodiment 3 are all the same, and difference is only that: being not added with methacrylic acid two
Butyl tin ester.
Rectangular loop obtained by rectangular loop obtained by 1-5 of the embodiment of the present invention and reference examples 1-6 and rectangular loop in the market are carried out
Contrast test, the result is as follows:
Wherein, mildew experiment is placed in product in 10000 spores/ml water mould spore suspension, 28-30 DEG C of item
Under part, after impregnating 5 days, the growing state of spore is observed.
Above embodiments are only to illustrate the technical solution of type of the present invention, rather than its limitations；Although referring to aforementioned implementation
Type of the present invention is described in detail in example, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for each embodiment technical solution of type of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of heat-resisting mould proof rectangular loop, which is characterized in that the constituent of the rectangular loop includes following parts by weight raw material: fourth
30-45 parts of benzene rubber, 25-35 parts of neoprene, 5-15 parts of natural rubber, galapectite 5-10 parts modified, 3-7 parts of sericite, height
Soil 1-4 parts of ridge, 2-6 parts of carbon black, 1-4 parts of methacrylic acid dibutyl tin ester, 0.5-2 parts of ammonium polyphosphate, silane coupling agent 0.5-
2.5 parts, 0.1-0.5 parts of mould inhibitor；
Wherein, the preparation method of modified galapectite includes the following steps:
20-30 parts of galapectites are weighed, are added in three-necked flask, dehydrated alcohol is added according to feed liquid mass ratio 1:8-10, slowly adds
Enter 15-20 parts of vinyltrimethoxysilanes, adjusting temperature is 45-48 DEG C, is stirred under the speed conditions of 420-450r/min
8-10h, filtering, three times with ethanol washing, is subsequently placed in 80-85 DEG C of baking oven and dries, crushed 280-300 mesh, must change
Property galapectite.
2. heat-resisting mould proof rectangular loop according to claim 1, which is characterized in that the constituent of the rectangular loop includes as follows
Parts by weight raw material: 35-40 parts of butadiene-styrene rubber, 27-30 parts of neoprene, 7-12 parts of natural rubber, it is galapectite 6-8 parts modified,
4-6 parts of sericite, 2-3 parts of kaolin, 3-5 parts of carbon black, 2-3 parts of methacrylic acid dibutyl tin ester, 1-1.5 parts of ammonium polyphosphate,
1-2 parts of silane coupling agent, 0.2-0.4 parts of mould inhibitor.
3. heat-resisting mould proof rectangular loop according to claim 2, which is characterized in that the constituent of the rectangular loop includes as follows
Parts by weight raw material: 36 parts of butadiene-styrene rubber, 28 parts of neoprene, 9 parts of natural rubber, modified 7 parts of galapectite, 5 parts of sericite, height
Ridge soil 2 parts, 4 parts of carbon black, 2 parts of methacrylic acid dibutyl tin ester, 1 part of ammonium polyphosphate, 1.5 parts of silane coupling agent, mould inhibitor 0.3
Part.
4. -3 any heat-resisting mould proof rectangular loop according to claim 1, which is characterized in that the silane coupling agent is silicon
Alkane coupling agent WD53, silane coupling agent WD60, silane coupling agent kh550, silane coupling agent kh560, in silane coupling agent kh570
One or two kinds of combinations.
5. -3 any heat-resisting mould proof rectangular loop according to claim 1, which is characterized in that the mould inhibitor be TBQ,
One or both of FB, LA, LB combination.
6. -3 any heat-resisting mould proof rectangular loop according to claim 1, which is characterized in that the preparation method of the rectangular loop
It comprises the following steps:
(1) using benzene as solvent, neoprene is dissolved, under conditions of being constantly passed through nitrogen, by neoprene and metering system
Sour dibutyl tin ester constant temperature under conditions of 68-70 DEG C is copolymerized, and product extracts certain time with dehydrated alcohol and removes extra first
Base acrylic acid dibutyl tin ester, obtains copolymer；
(2) galapectite, sericite, kaolin, carbon black, ammonium polyphosphate will be modified to mix, ground 350-380 mesh is added mixed
In conjunction machine, 20-25min is stirred with certain speed under conditions of 100-105 DEG C, then puts into kneader and mediates 25-
30min, it is spare；
(3) step (2) products therefrom is added together with copolymer, butadiene-styrene rubber, natural rubber, silane coupling agent, mould inhibitor
In open mill, temperature is adjusted to 45-50 DEG C and carries out one section of mixing, mixing time 2-3min then adjusts temperature, carries out two
Section is kneaded, mixing time 1-2min, through extruder extrusion molding to get product after.
7. heat-resisting mould proof rectangular loop according to claim 6, which is characterized in that extraction time is 10- in the step (1)
12h。
8. heat-resisting mould proof rectangular loop according to claim 6, which is characterized in that mixing speed is in the step (2)
350-400r/min。
9. heat-resisting mould proof rectangular loop according to claim 6, which is characterized in that the two-stage mixing time in the step (3)
It is 80-85 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591660.6A CN109627526A (en) | 2018-12-25 | 2018-12-25 | Heat-resisting mould proof rectangular loop of one kind and preparation method thereof |
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| CN201811591660.6A CN109627526A (en) | 2018-12-25 | 2018-12-25 | Heat-resisting mould proof rectangular loop of one kind and preparation method thereof |
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| Country | Link |
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| CN (1) | CN109627526A (en) |
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| CN111117080A (en) * | 2019-12-27 | 2020-05-08 | 安徽中联汽车零部件有限公司 | Ethylene propylene diene monomer rectangular ring material and preparation method thereof |
| CN113150390A (en) * | 2021-02-09 | 2021-07-23 | 武汉工程大学 | Halloysite nanotube modified ammonium polyphosphate flame retardant and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111117080A (en) * | 2019-12-27 | 2020-05-08 | 安徽中联汽车零部件有限公司 | Ethylene propylene diene monomer rectangular ring material and preparation method thereof |
| CN113150390A (en) * | 2021-02-09 | 2021-07-23 | 武汉工程大学 | Halloysite nanotube modified ammonium polyphosphate flame retardant and preparation method and application thereof |
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