CN107200990A - A kind of ageing-resistant sisal fiber modified SBS composite - Google Patents
A kind of ageing-resistant sisal fiber modified SBS composite Download PDFInfo
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- CN107200990A CN107200990A CN201710551038.1A CN201710551038A CN107200990A CN 107200990 A CN107200990 A CN 107200990A CN 201710551038 A CN201710551038 A CN 201710551038A CN 107200990 A CN107200990 A CN 107200990A
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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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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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The present invention relates to a kind of SBS composites, and in particular to a kind of ageing-resistant sisal fiber modified SBS composite, it is characterised in that by weight, include following component：50~70 parts of SBS, 6~13 parts of polystyrene, modified 5~10 parts of sisal fiber, 2~5 parts of ceramic fibre, 0.01~0.05 part of spermine NO, 0.01~0.03 part of citric acid, 0.1~0.3 part of dioxane, 1~3 part of antioxidant, 0.5~1 part of lubricant.Present invention also offers the preparation method of above-mentioned SBS composites.SBS composites prepared by the inventive method have the features such as ageing-resistant, shock resistance is excellent.
Description
Technical field
The present invention relates to a kind of SBS composite modifications technical field, in particular, it is related to a kind of ageing-resistant sisal hemp fine
Tie up modified SBS composite.
Background technology
Sisal hemp belongs to Agavaceae, is a kind of perennial crudefiber crop economic plants planted extensively, and the sisal hemp for being derived from its blade is fine
Dimension is pure white with color and luster, and seawater corrosion resistance is strong but pliable in texture, and density is small, and tensile strength and modulus are high, and wide material sources are cheap,
Therefore, sisal fiber has a clear superiority for preparing the inexpensive fiber-reinforced polymer-matrix compound of high-strength and high-modulus.
SBS (SBS) is the block copolymer using styrene as monomer, is had concurrently
The characteristic of plastics and rubber, low temperature performance excellent good with chemical stability, the advantage such as cheap and processing is convenient, is work
One of important general-purpose plastics in industry, but its impact strength is not high, it is yielding, it is not ageing-resistant, so that its application is received
Limitation.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind it is ageing-resistant, the shock resistance being modified using sisal fiber is excellent
Good SBS composites.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：A kind of ageing-resistant sisal hemp is fine
Modified SBS composite is tieed up, by weight, it includes following component：50~70 parts of SBS, 6~13 parts of polystyrene is modified
5~10 parts of sisal fiber, 2~5 parts of ceramic fibre, 0.01~0.05 part of spermine-NO, 0.01~0.03 part of citric acid, dioxa
0.1~0.3 part of hexamethylene, 1~3 part of antioxidant, 0.5~1 part of lubricant, described heat-proof aging sisal fiber modified SBS
The preparation method of composite, comprises the following steps：
1) spermine is dissolved in absolute ethyl alcohol, is added nano magnesia, is uniformly mixed, and is led to after being passed through nitrogen discharge air
Enter high pressure NO gases, reactant mixture carries out obtaining spermine-NO after rotary evaporation drying；
2) 50~70 parts of SBS is dissolved in toluene, adds 0.01~0.05 part of spermine-NO, citric acid 0.01~0.03
Part, 0.1~0.3 part of dioxane is stirred reaction under constant temperature, obtains epoxidized SBS；
3) by step 2) epoxidized SBS, 6~13 parts of polystyrene, modified 5~10 parts of sisal fiber, ceramic fibre 2~
5 parts, 1~3 part of antioxidant, 0.5~1 part of lubricant is mixed and stirred for uniformly, being placed in banbury and carrying out internally mix, recirculated water cooling
But granulate, dry through pelleter afterwards, obtain the SBS composites that high heat-resisting sisal fiber is modified.
Preferably, nitrogen is passed through the time for 3~5min, and it is 30~50min to be passed through high pressure NO reactions.Preferably, NO
Pressure be 2~3MPa, the rotating speed of rotary evaporation is 50~80r/min, and temperature is 50~70 DEG C, and vacuum is more than 0.01MPa.
Preferably, step 2) in the temperature of constant temperature be 50~60 DEG C, the rotating speed of stirring is 50~80r/min.
Preferably, step 3) preparation method of modified sisal fiber is：It is 1~3cm by sisal fiber Mechanical Crushing
3~5h is soaked for 5%~10% hydrogen peroxide in mass fraction, is placed in pressure pan, carries out steam explosion treatment, cool down,
Washing obtains modified sisal fiber to neutrality.
Preferably, in the tank of explosion treatment temperature be 150~200 DEG C, in tank pressure be 3~5MPa, keep 5~
10min, pressure inside the tank release time is 0.01~0.1s.
Preferably, described antioxidant is p-phenylenediamine, three (2,4- di-tert-butyl-phenyl) phosphite esters and hard ester
Acyl tannate, is in mass ratio (0.5~1):(1~2):(0.5~1) mixing composition, described lubricant is zinc stearate,
One or more in calcium stearate, paraffin.
Preferably, the internally mix temperature in banbury is 250~280 DEG C, and screw speed is 30~50r/min, and the time is
60~80min.
Advantages of the present invention：SBS has excellent tensile property, good lower temperature resistance, gas permeability, dissolubility and antiskid
Property, but due to containing unsaturated double-bond in its polybutadiene configuration so that it is sensitive to light, heat, oxygen, and ageing-resistant performance is poor,
By making SBS double bond epoxidation, its ageing-resistant performance can be significantly improved, moreover it is possible to increase SBS polarity, improve its cohesion strong
Degree, makes it have excellent adhesive effect to polar material；NO is provided by spermine-NO, dioxane is effectively turned
It is epoxy bond to change the unsaturated double-bond in polybutadiene configuration, and conversion ratio is up to more than 99.5%；Citric acid and oxidation reactive magnesium life
Into water citric acid is dissociateed proton, when spermine-NO runs into proton, fast decoupled discharges NO, by adding nanoscale oxygen
Change magnesium, release NO speed can be made more to relax, it is to avoid NO spilling, improve its utilization rate；Sisal fiber passes through peroxide
Change and carry out steam explosion treatment after hydrogen immersion again, content of cellulose is up to more than 99.3%, and fiber becomes thinner smaller, face crack
More, specific surface area improves more than 16%；Ceramic fibre is added, the heat resistance of SBS composites is improved, can be
110 DEG C of high temperature still keeps premium properties；By adding a certain proportion of antioxidant, the chain reaction of free radical can be blocked,
Good antioxidation can be played, the service life of SBS composites is extended；The hydroxyl and polybutadiene on sisal fiber surface
Epoxy bond reaction in alkene, makes sisal fiber and SBS form stronger covalent bond, improves the intensity of SBS composites and resistance to
Ageing properties, make its 110 DEG C of thermo-oxidative ageing 48h, and color keep is constant, and tensile strength keeps constant.
Embodiment
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Following embodiments are used to further illustrate but be not limited to the present invention.
Embodiment 1
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：50 parts of SBS,
6 parts of polystyrene, modified 5 parts of sisal fiber, 2 parts of ceramic fibre, 0.01 part of spermine-NO, 0.01 part of citric acid, dioxane
0.1 part of hexane, 1 part of antioxidant, 0.5 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) spermine is dissolved in absolute ethyl alcohol, is added nano magnesia, is uniformly mixed, and is led to after being passed through nitrogen discharge air
Enter high pressure NO gases, reactant mixture carries out obtaining spermine-NO after rotary evaporation drying；
2) 50 parts of SBS is dissolved in toluene, adds 0.01 part of spermine-NO, 0.01 part of citric acid, dioxane
0.1 part, reaction is stirred under constant temperature, epoxidized SBS is obtained；
3) by step 2) epoxidized SBS, 6 parts of polystyrene, modified 5 parts of sisal fiber, 2 parts of ceramic fibre is anti-oxidant
1 part of agent, 0.5 part of lubricant is mixed and stirred for uniformly, being placed in banbury and carrying out internally mix, make through pelleter after circulating water
Grain, drying obtains the SBS composites that high heat-resisting sisal fiber is modified.
SBS has excellent tensile property, good lower temperature resistance, gas permeability, dissolubility and skid resistance, but because it is poly-
Contain unsaturated double-bond in butadiene structure so that it is sensitive to light, heat, oxygen, and ageing-resistant performance is poor, by making SBS's double
Key epoxidation, can significantly improve its ageing-resistant performance, moreover it is possible to increase SBS polarity, improve its cohesive strength, make it to polarity material
Material has excellent adhesive effect；Spermine-the NO prepared by spermine and nitrogen dioxide, its spermine-NO discharged can make two
It is epoxy bond that oxinane, which effectively converts unsaturated double-bond in polybutadiene configuration, and conversion ratio is up to more than 99.5%；Sword
Flaxen fiber carries out steam explosion treatment again after hydrogen peroxide soaks, and content of cellulose is up to more than 99.3, and fiber becomes thinner
Smaller, face crack is more, and specific surface area improves more than 16%；Ceramic fibre is added, the heat resistance of SBS composites is improved
Can, it can still keep premium properties in 110 DEG C of high temperature；By adding a certain proportion of antioxidant, free radical can be blocked
Chain reaction, good antioxidation can be played, the service life of SBS composites is extended；Modified sisal fiber table
Epoxy bond reaction in the hydroxyl and polybutadiene in face, makes to be modified sisal fiber and is combined by stronger chemical bond with SBS, raising
The intensity and ageing-resistant performance of SBS composites, make its 110 DEG C of thermo-oxidative ageing 48h, color keep is constant, tensile strength
Keep constant.SBS composites and common SBS materials prepared by the inventive method respectively in identical thermo-oxidative ageing case
Thermo-oxidative ageing is carried out at 72 DEG C, when pulling apart tensile strength and starting to decline, ageing time than common SBS materials long 15% with
On；When hardness starts to decline, ageing time is longer by more than 20% than common SBS materials.
Embodiment 2
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.01 part of citric acid, dioxa
0.3 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.1 part of spermine to be dissolved in 5 parts of absolute ethyl alcohols, add 0.05 part of nano magnesia, be uniformly mixed, be passed through
High pressure NO gases are passed through after nitrogen 3min, discharge air, 30min is reacted, gained mixture obtained after rotary evaporation drying
Spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.3 part, reaction is stirred under constant temperature, epoxidized SBS is obtained；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, antioxygen
3 parts of agent, 1 part of lubricant is mixed and stirred for uniformly, being placed in banbury and carrying out internally mix, make through pelleter after circulating water
Grain, drying obtains the SBS composites that high heat-resisting sisal fiber is modified.
Spermine reacts the spermine-NO to be formed with NO, and citric acid generates water with oxidation reactive magnesium, passes through the water suction of citric acid
Effect, ionizes out hydrogen ion, and NO is discharged so as to be catalyzed spermine-NO and decompose.Slow release NO can be played by adding magnesia
Effect, the double bond for having steric hindrance is converted into epoxides by dioxane by NO effect, improve conversion ratio,
Conversion ratio is set to reach more than 99.5%.
Embodiment 3
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.03 part of citric acid, dioxa
0.1 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.2 part of spermine to be dissolved in 5 parts of absolute ethyl alcohols, add 0.05 part of nano magnesia, be uniformly mixed, be passed through
High pressure NO gases are passed through after nitrogen 5min, discharge air, the pressure for making NO is 3MPa, reacts 50min, and gained mixture is revolved
Turn evaporation drying, the rotating speed of rotary evaporation is 50r/min, and temperature is 50 DEG C, and vacuum is 0.1MPa, obtains spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.1 part, reaction is stirred under constant temperature, epoxidized SBS is obtained；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, antioxygen
3 parts of agent, 1 part of lubricant is mixed and stirred for uniformly, being placed in banbury and carrying out internally mix, make through pelleter after circulating water
Grain, drying obtains the SBS composites that high heat-resisting sisal fiber is modified.
Embodiment 4
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.03 part of citric acid, dioxa
0.3 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.05 part of spermine to be dissolved in 10 parts of absolute ethyl alcohols, add 0.05 part of nano magnesia, be uniformly mixed, lead to
High pressure NO gases are passed through after entering nitrogen 5min, discharge air, the pressure for making NO is 2.5MPa, reacts 50min, and gained mixture enters
Row rotary evaporation is dried, and the rotating speed of rotary evaporation is 50r/min, and temperature is 50 DEG C, and vacuum is 0.1MPa, obtains spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.3 part, in 50 DEG C of constant temperature, speed of agitator obtains epoxidized SBS to be stirred reaction under conditions of 50r/min；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, antioxygen
3 parts of agent, 1 part of lubricant is mixed and stirred for uniformly, being placed in banbury and carrying out internally mix, make through pelleter after circulating water
Grain, drying obtains the SBS composites that high heat-resisting sisal fiber is modified.
Embodiment 5
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.03 part of citric acid, dioxa
0.3 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.05 part of spermine to be dissolved in 30 parts of absolute ethyl alcohols, add 0.01 part of nano magnesia, be uniformly mixed, lead to
High pressure NO gases are passed through after entering nitrogen 5min, discharge air, the pressure for making NO is 2MPa, react 50min, gained mixture is carried out
Rotary evaporation is dried, and the rotating speed of rotary evaporation is 50r/min, and temperature is 50 DEG C, and vacuum is 0.1MPa, obtains spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.3 part, in 50 DEG C of constant temperature, speed of agitator obtains epoxidized SBS to be stirred reaction under conditions of 50r/min；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, antioxygen
3 parts of agent, 1 part of lubricant is mixed and stirred for uniformly, interim, and the preparation method of modified sisal fiber is：By sisal fiber machine
It is 5% hydrogen peroxide immersion 3h that tool, which is broken for 1cm and adds mass fraction, is placed in pressure pan, carries out steam explosion treatment, cold
But, washing is placed in banbury to neutrality and carries out internally mix, granulated after circulating water through pelleter, dries, and obtains high heat-resisting sword
Fibrilia modified SBS composites.
Sisal fiber carries out steam explosion treatment again after hydrogen peroxide soaks, and content of cellulose is up to 99.7%, fiber
Also become thinner smaller, face crack is also more, and specific surface area improves more than 16% than traditional steam explosion.
Embodiment 6
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.03 part of citric acid, dioxa
0.3 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.05 part of spermine to be dissolved in 20 parts of absolute ethyl alcohols, add 0.03 part of nano magnesia, be uniformly mixed, lead to
High pressure NO gases are passed through after entering nitrogen 5min, discharge air, the pressure for making NO is 2MPa, react 50min, gained mixture is carried out
Rotary evaporation is dried, and the rotating speed of rotary evaporation is 50r/min, and temperature is 50 DEG C, and vacuum is 0.1MPa, obtains spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.3 part, in 50 DEG C of constant temperature, speed of agitator obtains epoxidized SBS to be stirred reaction under conditions of 50r/min；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, antioxygen
3 parts of agent, 1 part of lubricant is mixed and stirred for uniformly, wherein, the preparation method of modified sisal fiber is：By sisal fiber machine
Tool is broken for 1cm, is placed in pressure pan, adds the hydrogen peroxide that mass fraction is 5%, carries out explosion treatment, explosion treatment
Method is that temperature is 150 DEG C in tank, and pressure is 3MPa in tank, keeps 5min, and pressure inside the tank release time cools down for 0.01s, washed
Wash to neutrality, be placed in banbury and carry out internally mix, granulated after circulating water through pelleter, dried, obtain high heat-resisting sisal hemp fine
Tie up modified SBS composites.
Embodiment 7
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.03 part of citric acid, dioxa
0.1 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.04 part of spermine to be dissolved in 5 parts of absolute ethyl alcohols, add 0.04 part of nano magnesia, be uniformly mixed, lead to
High pressure NO gases are passed through after entering nitrogen 4min, discharge air, the pressure for making NO is 2MPa, react 40min, gained mixture is carried out
Rotary evaporation is dried, and the rotating speed of rotary evaporation is 50r/min, and temperature is 50 DEG C, and vacuum is 0.1MPa, obtains spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.1 part, in 50 DEG C of constant temperature, speed of agitator obtains epoxidized SBS to be stirred reaction under conditions of 50r/min；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, to benzene
Diamines, three (2,4- di-tert-butyl-phenyls) phosphite esters and stearoylketene tannate are 0.5 in mass ratio:1:0.5 mixing composition
3 parts of antioxidant, 1 part of zinc stearate is mixed and stirred for uniformly, wherein, the preparation method of modified sisal fiber is：By sword
Flaxen fiber Mechanical Crushing is 1cm, soaks 3h for 5% hydrogen peroxide in mass fraction, is placed in pressure pan, carries out steam explosion
Processing, the method for explosion treatment is that temperature is 150 DEG C in tank, and pressure is 3MPa in tank, keeps 5min, pressure inside the tank release time
Cooled down for 0.01s, wash to neutrality, be placed in banbury and carry out internally mix, granulated after circulating water through pelleter, dried, obtain
Obtain the SBS composites that high heat-resisting sisal fiber is modified.
Embodiment 8
A kind of ageing-resistant sisal fiber modified SBS composite, by weight, it includes following component：70 parts of SBS,
13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, 0.05 part of spermine-NO, 0.03 part of citric acid, dioxa
0.1 part of hexamethylene, 3 parts of antioxidant, 1 part of lubricant, the preparation of described heat-proof aging sisal fiber modified SBS composite
Method, comprises the following steps：
1) take 0.03 part of spermine to be dissolved in 10 parts of absolute ethyl alcohols, add 0.05 part of nano magnesia, be uniformly mixed, lead to
High pressure NO gases are passed through after entering nitrogen 5min, discharge air, the pressure for making NO is 2MPa, react 50min, gained mixture is carried out
Rotary evaporation is dried, and the rotating speed of rotary evaporation is 50r/min, and temperature is 50 DEG C, and vacuum is 0.1MPa, obtains spermine-NO；
2) 70 parts of SBS is dissolved in toluene, adds 0.05 part of spermine-NO, 0.03 part of citric acid, dioxane
0.1 part, in 50 DEG C of constant temperature, speed of agitator obtains epoxidized SBS to be stirred reaction under conditions of 50r/min；
3) by step 2) epoxidized SBS, 13 parts of polystyrene, modified 10 parts of sisal fiber, 5 parts of ceramic fibre, to benzene
Diamines, three (2,4- di-tert-butyl-phenyls) phosphite esters and stearoylketene tannate are 0.5 in mass ratio:1:0.5 mixing composition
3 parts of antioxidant, 1 part of zinc stearate is mixed and stirred for uniformly, wherein, the preparation method of modified sisal fiber is：By sword
Flaxen fiber Mechanical Crushing is 1cm, soaks 30min for 5% hydrogen peroxide in mass fraction, is placed in pressure pan, carries out steam
Explosion treatment, the method for explosion treatment is that temperature is 150 DEG C in tank, and pressure is 3MPa in tank, keeps 5min, pressure inside the tank release
Time cools down for 0.01s, washs to neutrality, is placed in banbury and carries out internally mix, and the internally mix temperature in banbury is 250 DEG C, spiral shell
Bar rotating speed is 30r/min, and the time is to be granulated through pelleter after 60min, circulating water, dries, obtains high heat-resisting sisal fiber
Modified SBS composites.
Each component internally mix in banbury after mixing, makes each component sufficiently merge mixing, makes to be modified sisal fiber
The hydroxyl on surface is grafted SBS epoxy reaction with epoxidation, so as to strengthen the ageing-resistant of SBS composites, intensity and impact
Performance.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the embodiment with description.
Claims (8)
1. a kind of ageing-resistant sisal fiber modified SBS composite, it is characterised in that by weight, include following component：
50~70 parts of SBS, 6~13 parts of polystyrene, modified 5~10 parts of sisal fiber, 2~5 parts of ceramic fibre, spermine-NO 0.01
~0.05 part, 0.01~0.03 part of citric acid, 0.1~0.3 part of dioxane, 1~3 part of antioxidant, lubricant 0.5~
1 part, the preparation method of described ageing-resistant sisal fiber modified SBS composite comprises the following steps：
1) spermine is dissolved in absolute ethyl alcohol, is added nano magnesia, is uniformly mixed, and height is passed through after being passed through nitrogen discharge air
NO gases are pressed, reactant mixture carries out obtaining spermine-NO after rotary evaporation drying；
2) 50~70 parts of SBS is dissolved in toluene, adds 0.01~0.05 part of spermine-NO, 0.01~0.03 part of citric acid, two
0.1~0.3 part of oxinane, is stirred reaction under constant temperature, obtains epoxidized SBS；
3) by step 2) epoxidized SBS, 6~13 parts of polystyrene, modified 5~10 parts of sisal fiber, 2~5 parts of ceramic fibre,
1~3 part of antioxidant, 0.5~1 part of lubricant is mixed and stirred for uniformly, being placed in banbury and carrying out internally mix, after circulating water
Granulate, dry through pelleter, obtain the SBS composites that high heat-resisting sisal fiber is modified.
2. ageing-resistant sisal fiber modified SBS composite according to claim 1, it is characterised in that when nitrogen is passed through
Between be 3~5min, be passed through high pressure NO reaction be 30~50min.
3. ageing-resistant sisal fiber modified SBS composite according to claim 1 or 2, it is characterised in that NO pressure
For 2~3MPa, the rotating speed of rotary evaporation is 50~80r/min, and temperature is 50~70 DEG C, and vacuum is more than 0.01MPa.
4. ageing-resistant sisal fiber modified SBS composite according to claim 1, it is characterised in that step 2) in
The temperature of constant temperature is 50~60 DEG C, and the rotating speed of stirring is 50~80r/min.
5. ageing-resistant sisal fiber modified SBS composite according to claim 1, it is characterised in that step 3) it is modified
The preparation method of sisal fiber is：By sisal fiber Mechanical Crushing be 1~3cm in 5%~10% hydrogenperoxide steam generator
3~5h is soaked, is placed in pressure pan, steam explosion treatment is carried out, cooling, washing to neutrality obtains modified sisal fiber.
6. ageing-resistant sisal fiber modified SBS composite according to claim 5, it is characterised in that explosion treatment
In tank temperature be 150~200 DEG C, in tank pressure be 3~5MPa, keep 5~10min, pressure inside the tank release time be 0.01~
0.1s。
7. ageing-resistant sisal fiber modified SBS composite according to claim 1, it is characterised in that described antioxygen
Agent is p-phenylenediamine, three (2,4- di-tert-butyl-phenyl) phosphite esters and stearoylketene tannate, in mass ratio for (0.5~
1):(1~2):(0.5~1) mixing composition, described lubricant is one kind or several in zinc stearate, calcium stearate, paraffin
Kind.
8. ageing-resistant sisal fiber modified SBS composite according to claim 1, it is characterised in that in banbury
Internally mix temperature is 250~280 DEG C, and screw speed is 30~50r/min, and the time is 60~80min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358242A (en) * | 2019-05-29 | 2019-10-22 | 周宁东 | A kind of high-strength low-temperature-resistant CABLE MATERIALS and preparation method thereof |
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| CN102675569A (en) * | 2012-04-28 | 2012-09-19 | 南京信息工程大学 | Epoxydized SBS (styrene-butadiene-styrene) and epoxydized SBS polymer |
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| CN102675569A (en) * | 2012-04-28 | 2012-09-19 | 南京信息工程大学 | Epoxydized SBS (styrene-butadiene-styrene) and epoxydized SBS polymer |
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| J.A.RODRIGUEZ，ET AL: "DeNOx Reactions on MgO(100), ZnxMg1-xO(100), CrxMg1-xO(100), and Cr2O3(0001): Correlation between Electronic and Chemical Properties of Mixed-Metal Oxides", 《J.PHYS.CHEM.B》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110358242A (en) * | 2019-05-29 | 2019-10-22 | 周宁东 | A kind of high-strength low-temperature-resistant CABLE MATERIALS and preparation method thereof |
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Application publication date: 20170926 |