CN108129757A - A kind of injection-level nylon of resistance to ultralow temperature toughening material and preparation method thereof - Google Patents
A kind of injection-level nylon of resistance to ultralow temperature toughening material and preparation method thereof Download PDFInfo
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- CN108129757A CN108129757A CN201711405134.1A CN201711405134A CN108129757A CN 108129757 A CN108129757 A CN 108129757A CN 201711405134 A CN201711405134 A CN 201711405134A CN 108129757 A CN108129757 A CN 108129757A
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Abstract
The invention belongs to polymeric material field more particularly to a kind of injection-level nylon of resistance to ultralow temperature toughening materials and preparation method thereof.Its raw material matches as follows according to parts by weight：70 80 parts of ethylene propylene diene rubber, 20 30 parts of ethylene octene copolymer, 5 10 parts of dibenzoyl peroxide, 0.5 2 parts of maleic anhydride, 115 parts of KT, 15 parts of carbon nanotube, 0.05 0.3 parts of solid initiator, 0.05 0.3 parts of liquid initiator, 0.1 0.5 parts of heat stabilizer, 0.1 0.3 parts of antioxidant, 6 10 20 parts of nylon.Nylon toughener prepared by the present invention belongs to injection grade toughener, the step for eliminating toughener tenacity increased nylon reactive extrursion, effectively saves production cost；Secondly, the present invention can apply under subzero 50 DEG C of environment temperatures, and the effective resistance to low temperature for improving tenacity increased nylon improves its notch impact strength.
Description
Technical field
The invention belongs to polymeric material field more particularly to a kind of injection-level nylon of resistance to ultralow temperature toughening material and its
Preparation method.
Background technology
Nylon resin is that DuPont develops the resin for being used to prepare fiber at first, realizes that high-volume is raw in nineteen thirty-nine
Production；Start the 1950s to develop and produce injection-molded item, with substituted metal meet the lightweight of downstream industry product, reduce into
This requirement.Nylon has high mechanical strength in itself, and good toughness, fatigue performance protrudes, corrosion-resistant, ageing-resistant performance is preferable,
The exemplar prepared has many advantages, such as light weight, easy dyeing, easily molded；Therefore, nylon is widely used in replacing the metals such as copper
Manufacture bearing, gear, pump leaf and other parts in the industry such as machinery, chemical industry, instrument, automobile, and due to molten polyamide
There is very high intensity after being spun into silk, can make synthetic fibers can simultaneously be used as medical suture.But nylon also has the shortcomings that apparent：
Water imbibition is poor, product size stability is poor, antistatic force is poor, low temperature tolerance ability is poor etc., wherein low temperature tolerance ability compared with
Poor this point seriously constrains the use of nylon at low ambient temperatures.Such as nylon cable tie easy stress cracking at low ambient temperatures
Phenomenon；Easy cracking phenomena of nylon pipeline low temperature etc..In recent years, for how to improve nylon drawbacks described above this problem, cause
The close attention of a large amount of scholars, the research for especially improving the resistance to low temperature of nylon material is most important, and then can be used for
Solve the problems, such as nylon cable tie material at low ambient temperatures easy stress cracking this.
Invention content
In view of the problems of the existing technology, the present invention provide a kind of injection-level nylon of resistance to ultralow temperature toughening material and its
Preparation method.Nylon toughener prepared by the present invention belongs to injection grade toughener, eliminates toughener tenacity increased nylon reactive extrursion
The step for, effectively save production cost；Secondly, the present invention can apply under subzero 50 DEG C of environment temperatures, effective to improve
The resistance to low temperature of tenacity increased nylon improves its notch impact strength.
To achieve these goals, the injection-level nylon of resistance to ultralow temperature toughening material provided by the invention, raw material according to
Parts by weight proportioning is as follows：70-80 parts of ethylene propylene diene rubber, 20-30 parts of ethylene octene copolymer, dibenzoyl peroxide 5-10
Part, 0.5-2 parts of maleic anhydride, 1-5 parts of KT-1,1-5 parts of carbon nanotube, 0.05-0.3 parts of solid initiator, liquid initiator
0.05-0.3 parts, 0.1-0.5 parts of heat stabilizer, 0.1-0.3 parts of antioxidant, 6 10-20 parts of nylon.
Preferably, raw material matches as follows according to parts by weight：70-80 parts of ethylene propylene diene rubber, ethylene octene copolymer
20-30 parts, 5-10 parts of dibenzoyl peroxide, 1-1.5 parts of maleic anhydride, 2-4 parts of KT-1,1-5 parts of carbon nanotube, solid draw
Send out 0.15-0.25 parts of agent, 0.1-0.2 parts of liquid initiator, 0.3-0.5 parts of heat stabilizer, 0.2-0.3 parts of antioxidant, nylon 6
10-20 parts.
Preferably, the solid initiator is cumyl peroxide (DCP).
Preferably, the liquid initiator is double two or five vulcanizing agents.
Preferably, the heat stabilizer is zinc stearate, and can make lubricant.
Preferably, the KT-1 is the homemade maleic anhydride inoculated polypropylene of company.
Preferably, the antioxidant mixes antioxidant for Hinered phenols antioxidant 1010 with 1098, and described 1010 and 1098
Weight ratio be 1:2.
To achieve these goals, the preparation method of the injection-level nylon of resistance to ultralow temperature toughening material provided by the invention,
Specifically include following steps.
Step 1, under the conditions of 170-180 DEG C, ethylene propylene diene rubber, ethylene octene copolymer are subjected to blending 3-5min,
Dibenzoyl peroxide is added in, reaction time 7-10min obtains EPDM/POE thermoplastic elastomer (TPE)s.
Step 2, the preparation process of KT-1：100 parts of polypropylene, 0.7-0.9 parts of maleic anhydrides, 0.1-0.3 solids are caused
Agent, 0.3-0,5 parts of heat stabilizers, 0.2-0.3 parts of antioxidant are placed in high-speed mixer and are uniformly mixed, and incorporation time is set as
5min prepares KT-1 through twin-screw extrusion；Extrusion temperature is set as：One 165-175 DEG C of area, two 170-180 DEG C of areas, three area 175-
185 DEG C, four 180-190 DEG C of areas, five 185-195 DEG C of areas, six 185-195 DEG C of areas, seven 180-190 DEG C of areas, eight 175-185 DEG C of areas,
Nine 170-180 DEG C of areas, 185-195 DEG C of head；Every area residence time 6-8 seconds；Host revolution is：450-550r/min；Described
Initiator is cumyl peroxide (DCP)；The heat stabilizer is zinc stearate；The antioxidant resists for Hinered phenols
Oxygen agent 1010.
Step 3, by weight ratio dispensing take EPDM/POE thermoplastic elastomer (TPE)s, maleic anhydride, KT-1, carbon nanotube, consolidate
Body initiator, heat stabilizer, antioxidant, are placed in high-speed mixer, and incorporation time is set as 5min, and raw material is uniformly mixed.
Step 4 puts into uniformly mixed material in the double screw extruder of this field routine, and extrusion temperature is set as：
One 175-185 DEG C of area, two 180-190 DEG C of areas, three 185-195 DEG C of areas, four 230-240 DEG C of areas, five 235-245 DEG C of areas, 6th area
195-205 DEG C, seven 190-200 DEG C of areas, eight 185-195 DEG C of areas, nine 180-190 DEG C of areas, 195-205 DEG C of head；When being stopped per area
Between 6-8 seconds；Host revolution is：500-600r/min；When double screw extruder temperature reaches production requirement, by liquid initiator
It is injected at second section cylinder of the extruder close to blanking device by liquid pump；Nylon 6 is in a manner that side is fed in extruder
It is added at the third section cylinder of blanking device, middle cylinder body is the device that screw rod is wrapped up in double screw extruder.
Step 5, the material for squeezing out cross-head obtain particle through underwater cutpellet, dewaterer and vibrating screen；At dry
After reason, the nylon toughener of resistance to ultralow temperature is obtained；Wherein：The size controlling of pelletizing is in 3-4mm；Particle after dewaterer dehydration
Water content control is below 0.3%；Drying temperature is set as 50-60 DEG C, and drying time is set as 0.5h.
The present invention provides a kind of injection-level nylon of resistance to ultralow temperature, and preparation method is (in parts by weight)：Using this
15-20 parts of the nylon toughener of invention is added in 80-85 parts of nylon, with 0.1-0.3 parts of nylon nucleating agent and carboxyl fourth
0.1-0.3 parts of nitrile rubber is directly molded after blending；Shooting Technique is set as：230 DEG C -250 DEG C of injection temperature, injection pressure
Power is set as：46-48MPa, injection moulding speed：65-75cm/s.
The nucleating agent is ULTRA-DN Italy Puli perseverance nylon nucleating agent.
The remarkable result of the present invention.
The present invention, which selects maleic anhydride to be grafted the advantages of EPDM/POE elastomers are as the nylon toughener of resistance to ultralow temperature, to be had：Three
First EP rubbers type is various, has the advantages that high fillibility of low-density, resistance to ag(e)ing, corrosion resistance；In addition to this ternary
When propylene content is higher in EP rubbers, itself just has preferable resistance to low temperature.Present invention employs EPDM/POE heat
Thermoplastic elastic, the addition of ethylene octene copolymer not only maintain the intrinsic characteristic of ethylene propylene diene rubber, also make it have
The injection of significant thermoplastic, extrusion, the processing performance of blowing and calendering formation；The addition of dibenzoyl peroxide,
Ethylene propylene diene rubber can be made preferably to be reacted with ethylene octene copolymer, form EPDM/POE elastomers；Add homemade KT-1
Product is maleic anhydride inoculated polypropylene, has preferable mobility, is added in EPDM/POE thermoplastic elastomer (TPE)s, can
Its mobility is effectively improved, so as to prepare tenacity increased nylon injection grade toughener；Carbon nanotube is added, toughening material can be made to exist
Shape webbed dispersed structure when being added in nylon products improves the integral strength of material, when itself and EPDM/POE elastomers
Interaction, when nylon material is impacted under low-temperature condition, the heat that deformation generates can be rapidly dispersed into other positions,
The covert temperature improved when material is hit again is equivalent to, and then improves impact strength of the material again under low temperature environment；
For the present invention using two kinds of initiators have been selected, wherein cumyl peroxide is powdered, can be with the Malaysia of non-molten condition
Acid anhydrides is adequately contacted with EPDM/POE elastomers, carry out graft reaction one step ahead；And double two or five vulcanizing agents cause for liquid
Agent can preferably be uniformly mixed with the material under molten condition, react, so being employed in the present invention in extruder second
Double two or five vulcanizing agents are injected by liquid pump at body so that it can in extruder shear history more fully under molten condition
EPDM/POE thermoplastic elastomer (TPE)s, maleic anhydride mix, maleic anhydride can more fully with EPDM/POE elastomers into
Row graft reaction reduces the residual of maleic anhydride, improves the grafting rate of toughener；The present invention passes through at third cylinder
The method that side is fed adds a certain amount of nylon 6, effectively raises the fusing point of maleic anhydride grafting EPDM/POE elastomers, prevents
Only there is glutinous the phenomenon that luming together in subsequent heat drying course in it；In addition to this, adding in nylon 6 can effectively improve
The mobile performance of toughener increases the melt index of toughener, allow its when subsequently with nylon blending toughening preferably
Dispersion controls the addition of nylon 6, and toughener dispersion effect is allow to reach the high temperature in extruder, can be with during melt blending
The degree of scatter reached, the effective notch impact strength for improving tenacity nylon material at subzero 50 DEG C；This selecting response
Two kinds of Hinered phenols antioxidants are used in mixed way, antioxidant 1010 increases mainly for maleic anhydride is prevented to be grafted ethylene propylene diene rubber
Tough dose of aging, 1098 main function of antioxidant are the oxidation reactions for inhibiting polyamide, and main function in the present invention is prevents
The tenacity increased nylon of resistance to ultralow temperature aging extends the usage time 3-5 for the nylon of resistance to ultralow temperature.
The technology that mainly uses of the present invention for dynamic vulcanization technology, grafting with melt extrusion technique and underwater cutpellet technology, if
Expense needed for standby investment is small, and production cost is low, can carry out continuous production process.Grafting with melt extrusion technology mainly increases temperature,
Material is made to be in molten condition, by twin-screw with rotating, material is allow adequately to be contacted, is reacted.It can not
Avoid, side reaction can occur in this reaction process, thus need to it is other to process conditions and initiator usage amount etc. because
Element carries out comparison test analysis.Initiator of the present invention is using two kinds of initiators of cumyl peroxide and double two or five initiators, warm
Stabilizer is zinc stearate and mixed type antioxidant with lubricant.The material that extruder squeezes out is prepared through underwater cutpellet technology
Into particle, since toughener has certain viscosity, strip phenomenon is susceptible to when being cut using tie rod, using underwater cutpellet technology
The generation of such phenomenon can effectively be avoided.
Specific embodiment
With reference to specific embodiment, the present invention will be further described；The present invention is by changing solid initiator, liquid
Dosage and the extrusion screw rod combination of initiator, maleic anhydride, KT-1, heat stabilizer etc., the feed postition of initiator, nylon
The feed postition of PA6 is further verified.
Embodiment 1.
Study influence of the dosage of solid initiator to toughener.
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.7 part of maleic anhydride, 0.1 part of DCP, 0.3 part of zinc stearate, 0.2 part 1010, be placed in high-speed mixer be uniformly mixed, mixing
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；KT-1 is prepared；Then, 85 parts of EPDM/POE thermoplastic elastomehcs are taken
Property body, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.4 part of heat stabilizer, 0.2 part mixing antioxidant, with reference under
Table 1 adds solid initiator, is placed in high mixer and is uniformly mixed, puts into twin-screw extrusion；
Extrusion temperature is set as：One 180 DEG C of area, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, 6th area
200 DEG C, seven 195 DEG C of areas, eight 190 DEG C of areas, nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：
550r/min.0.15 part of double two or five vulcanizing agent by liquid pump is saved in extruder second in cylinder and is injected, 15 parts of nylon 6 are passed through
The mode that side is fed adds at the third section cylinder of extruder；By cross-head squeeze out material underwater cutpellet, dewaterer with
Vibrating screen obtains particle (3-4mm)；Processing (temperature setting is 60 DEG C) is dried in obtained particle, prepares resistance to ultralow temperature Buddhist nun
Imperial toughener, result of study are shown in Table 1.
Table 1：Influence of the content of different solid initiators to toughener.
Result above analysis can obtain：When the dosage of solid initiator is 0.15-0.25 parts, the toughener of gained connects
Branch rate highest, so toughener grafting rate can be obtained ranging from：0.70-0.85；Melting means is ranging from：2.2-2.5；So this hair
The parts by weight dosage of bright middle solid initiator is preferably 0.15-0.25 parts.
Embodiment 2.
Study influence of the dosage of liquid initiator to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.9 part of maleic anhydride, 0.5 part of zinc stearate, is placed in high-speed mixer uniformly mixed, incorporation time for 0.3 part 1010 at 0.3DCP
It is set as 5min, KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, three 180 DEG C of areas,
Four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；Stop per area
Stay the time 7 seconds；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastomer (TPE)s are taken, 1.5
Part maleic anhydride, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 part of mixing antioxygen
Agent is placed in high mixer and is uniformly mixed, puts into twin-screw extrusion；Extrusion temperature is set as：Extrusion temperature is set as：One area
180 DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas,
Nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；Cause with reference to the following table 2 injection liquid
Agent adds in 15 parts of nylon 6 in a manner that side is fed at the third section cylinder of extruder；The material that cross-head is squeezed out
Particle (3-4mm) is obtained through underwater cutpellet, dewaterer and vibrating screen；Obtained particle is dried processing, and (temperature setting is
60 DEG C), the nylon toughener of resistance to ultralow temperature is prepared, result of study is shown in Table 2.
Table 2：Influence of the content of different liquids initiator to toughener.
More than testing result can obtain：It is optimum amount that the dosage for injecting liquid initiator double 25, which is 0.1-0.2 parts,.
Experimental example 3.
Study influence of the dosage of maleic anhydride to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.8 part of maleic anhydride, 0.35 part of zinc stearate, is placed in high-speed mixer uniformly mixed, mixing for 0.2 part 1010 at 0.25 part of DCP
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastics are taken
Body, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 point of mixing antioxidant, reference
The following table 3 adds maleic anhydride, is placed in high mixer and is uniformly mixed, puts into twin-screw extrusion.Extrusion temperature is set as：One area
180 DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas,
Nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part of double two or five vulcanizing agent
It is saved in cylinder and injected in extruder second by liquid pump, by 15 parts of nylon 6 in the third section cylinder of extruder in a manner that side is fed
It is added at body.The material that cross-head squeezes out is obtained into particle (3-4mm) through underwater cutpellet, dewaterer and vibrating screen；Will
To particle processing (temperature setting be 50 DEG C) is dried, prepare the nylon toughener of resistance to ultralow temperature, result of study is shown in Table 3.
Table 3：Influence of the content of different maleic anhydrides to toughener.
Result above analysis can obtain：The preferable amount of maleic anhydride is 1-1.5 parts.
Embodiment 4.
Study influence of the dosage of KT-1 to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.8 part of maleic anhydride, 0.5 part of zinc stearate, is placed in high-speed mixer and is uniformly mixed for 0.3 part 1,010 0.1 part of DCP, during mixing
Between be set as 5min, through twin-screw extrusion prepare KT-1.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, three areas 180
DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；Per area
7 seconds residence times；Host revolution is：500r/min；Prepare KT-1.Then, take 85 parts of EPDM/POE thermoplastic elastomer (TPE)s,
1.5 parts of maleic anhydrides, 3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 point of mixing antioxidant, reference
The following table 4 adds KT-1, is placed in high mixer and is uniformly mixed, puts into twin-screw extrusion；Extrusion temperature is：Extrusion temperature is set
For：One 180 DEG C of area, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, 8th area
190 DEG C, nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part double 25
Vulcanizing agent is saved in extruder second in cylinder by liquid pump to be injected, by 15 parts of nylon 6 the of extruder in a manner that side is fed
It is added at three section cylinders.The material that cross-head squeezes out is obtained into particle (3- through underwater cutpellet, dewaterer and vibrating screen
4mm)；Processing (temperature setting is 55 DEG C) is dried in obtained particle, the nylon toughener of resistance to ultralow temperature is prepared, the results are shown in Table
4。
Table 4：Influence of the content of different maleic anhydrides to toughener.
Result above analysis can obtain：The preferable amount of KT-1 is 2-4 parts.
Embodiment 5.
Study influence of the dosage of heat stabilizer to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.7 part of maleic anhydride, 0.4 part of zinc stearate, is placed in high-speed mixer uniformly mixed, mixing for 0.25 part 1010 at 0.3 part of DCP
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastics are taken
Body, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator add thermostabilization with reference to the following table 5
Agent, 0.2 part of antioxidant are placed in high mixer and are uniformly mixed, puts into twin-screw extrusion.Extrusion temperature is set as：One area 180
DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas, 9th area
185 DEG C, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part of double two or five vulcanizing agent by liquid
Body pump, which is saved in extruder second in cylinder, to be injected, by 15 parts of nylon 6 in a manner that side is fed at the third section cylinder of extruder
It adds in.The material that cross-head squeezes out is obtained into particle (3-4mm) through underwater cutpellet, dewaterer and vibrating screen；By what is obtained
Processing is dried in particle (temperature setting is 50 DEG C).The nylon toughener of resistance to ultralow temperature is prepared, the results are shown in Table 5.
Table 5：Influence of the content of different heat stabilizers to toughener.
Result above analysis can obtain：When the preferable amount of zinc stearate is 0.3-0.5 parts.
Embodiment 6.
Influence of the dosage of research mixing antioxidant to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.75 part of maleic anhydride, 0.35 part of zinc stearate, is placed in high-speed mixer uniformly mixed, mixing for 0.3 part 1010 at 0.2 part of DCP
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastics are taken
Body, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, by 6 institute of table
Show addition mixing antioxidant, be placed in high mixer and be uniformly mixed, put into twin-screw extrusion.Extrusion temperature is set as：One area
180 DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas,
Nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part of double two or five vulcanizing agent
It is saved in cylinder and injected in extruder second by liquid pump, by 15 parts of nylon 6 in the third section cylinder of extruder in a manner that side is fed
It is added at body.The material that cross-head squeezes out is obtained into particle (3-4mm) through underwater cutpellet, dewaterer and vibrating screen；Will
To particle processing (temperature setting be 55 DEG C) is dried, prepare the nylon toughener of resistance to ultralow temperature, the results are shown in Table 6.
Table 6：Influence of the content of antioxidant to flexibilized grade agent appearance.
Result above can be analyzed and be obtained, the dosage of antioxidant is preferably 0.2-0.3 parts.
Experimental example 7.
Study influence of the screw combinations to toughener。
The research of screw combinations be threaded block in extruder inner screw arrangement mode, when the screw thread of screw rod shearing part
When lumpiness number is bigger, shear ability is stronger, so as to make material mixing more uniform.Used when screw rod shearing is strong the number of degrees for
90 ° of threaded block；When in screw rod shearing, the number of degrees are used as 60 ° of threaded block；When screw rod shearing is weak, the number of degrees are used as 45 ° of spiral shell
Line block.
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.9 part of maleic anhydride, 0.3 part of hot zinc stearate, is placed in high-speed mixer uniformly mixed, mixing for 0.3 part 1010 at 0.1 part of DCP
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastics are taken
Body, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 part mixed
Close antioxidant, be placed in high mixer be uniformly mixed, put into twin-screw extrusion.It is tested respectively by the screw combinations of table 7,
Extrusion temperature is set as：One 180 DEG C of area, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven
195 DEG C of area, eight 190 DEG C of areas, nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；It will
0.15 part of double two or five vulcanizing agent is saved in cylinder in extruder second by liquid pump and injected, by way of 15 parts of nylon 6 are fed side
It is added at the third section cylinder of extruder.The material that cross-head squeezes out is obtained through underwater cutpellet, dewaterer and vibrating screen
To particle (3-4mm)；Processing (temperature setting is 55 DEG C) is dried in obtained particle, prepares the toughening nylon of resistance to ultralow temperature
Agent the results are shown in Table 7.
Table 7：Influence of the screw combinations of varying strength to toughener.
Result above analysis can obtain：Screw combinations are strong, and the toughener effect prepared is preferable.
Experimental example 8.
Study influence of the initiator feed postition to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.9 part of maleic anhydride, 0.35 part of zinc stearate, is placed in high-speed mixer uniformly mixed, mixing for 0.3 part 1010 at 0.1 part of DCP
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastics are taken
Body, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 part mixed
Antioxidant is closed, is placed in high mixer and is uniformly mixed, put into twin-screw extrusion.Extrusion temperature is set as：One 180 DEG C of area, two
185 DEG C of area, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas, nine areas 185
DEG C, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；0.25 part of solid is added in the way of table 8 to draw
Agent and 0.15 part of double two or five initiators are sent out, 15 parts of nylon 6 are added in a manner that side is fed at the third section cylinder of extruder
Enter.The material that cross-head squeezes out is obtained into particle (3-4mm) through underwater cutpellet, dewaterer and vibrating screen；That will be obtained
Processing (temperature setting is 55 DEG C) is dried in grain, prepares the nylon toughener of resistance to ultralow temperature, the results are shown in Table 8.
Table 8：Influence of the feed postition of initiator to flexibilized grade agent appearance.
Result above can be analyzed and be obtained, solid initiator is preferably added to mode to be directly added into during batch mixing；Liquid initiator
It is to be added at the second cylinder to be preferably added to mode.
Embodiment 9.
Study influence of the nylon PA6 feed postitions to toughener。
First, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are subjected to blending 5min,
7 parts of dibenzoyl peroxides are added in, reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts of polypropylene,
0.9 part of maleic anhydride, 0.35 part of zinc stearate, is placed in high-speed mixer uniformly mixed, mixing for 0.3 part 1010 at 0.1 part of DCP
Time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two 175 DEG C of areas, 3rd area
180 DEG C, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, 190 DEG C of head；
Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 85 parts of EPDM/POE thermoplastic elastics are taken
Body, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer, is placed in height
It is uniformly mixed, is put into twin-screw extrusion in mixed machine.Extrusion temperature is set as：One 180 DEG C of area, two 185 DEG C of areas, three areas 190
DEG C, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas, nine 185 DEG C of areas, 200 DEG C of head；Per area
6 seconds residence times；Host revolution is：550r/min；0.15 part of double two or five vulcanizing agent is saved into cylinder by liquid pump in extruder second
Injection, the mode as described in table 9 add 15 parts of nylon PA6 in vivo, by the material that cross-head squeezes out through underwater cutpellet, dehydration
Machine obtains particle (3-4mm) with vibrating screen；Processing (temperature setting is 55 DEG C) is dried in obtained particle, is prepared resistance to ultralow
Warm nylon toughener, the results are shown in Table 9.
Table 9：Influence of the feed postition of nylon 6 to flexibilized grade agent appearance.
Result above can be analyzed and be obtained, it is to squeeze 15 parts of nylon 6 in a manner that side is fed that nylon PA6, which is preferably added to mode,
Go out at the third section cylinder of machine and add in.
Embodiment 10.
The method that nylon is prepared using toughener of the present invention, it is specific as follows.
Step 1, first, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are total to
Mixed 5min, adds in 7 parts of dibenzoyl peroxides, and reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts
Polypropylene, 0.3 part of DCP, 0.5 part of zinc stearate, is placed in the interior mixing of high-speed mixer for 0.3 part 1010 at 0.9 part of maleic anhydride
Even, incorporation time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two areas 175
DEG C, three 180 DEG C of areas, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, head
190℃；Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.Then, 80 parts of EPDM/POE thermoplastics are taken
Property elastomer, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes, 0.25 part of solid initiator, 0.4 part of heat stabilizer,
0.2 part of mixing antioxidant is placed in high mixer and is uniformly mixed.
Step 2 puts into mixed material in twin-screw extrusion, and extrusion temperature is set as：Extrusion temperature is set as：One area
180 DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas,
Nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part of double two or five initiator
It is saved in cylinder and injected in extruder second by liquid pump, by 20 parts of nylon 6 in the third section cylinder of extruder in a manner that side is fed
It is added at body.The material that cross-head squeezes out is obtained into particle through check rod, excessively water cooling, pelletizing；Obtained particle is carried out
(temperature setting is 55 DEG C) is dried, prepares the nylon toughener of resistance to ultralow temperature.
85 parts of nylon, 15 parts of toughener, 0.2 portion of nylon nucleating agent and 0.2 part of carboxy nitrile rubber are pressed weight by step 3
Proportion ingredient is measured, is uniformly mixed material by high-speed mixer；It puts into and standard batten is directly molded into injection molding machine.Injection
Technique is set as：240 DEG C of injection temperature, injection pressure is set as：46MPa, injection moulding speed：70cm/s.
Embodiment 11.
The method that nylon is prepared using toughener of the present invention, it is specific as follows.
Step 1, first, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are total to
Mixed 5min, adds in 7 parts of dibenzoyl peroxides, and reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts
Polypropylene, 0.2 part of DCP, 0.3 part of zinc stearate, is placed in the interior mixing of high-speed mixer for 0.3 part 1010 at 0.9 part of maleic anhydride
Even, incorporation time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as：One 170 DEG C of area, two areas 175
DEG C, three 180 DEG C of areas, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, head
190℃；Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.
Step 2 takes 85 parts of EPDM/POE thermoplastic elastomer (TPE)s, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes,
0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 part of mixing antioxidant, are placed in high mixer and are uniformly mixed, and put into double
In Screw Extrusion.
Step 3 puts into mixed material in twin-screw extrusion, and extrusion temperature is set as：Extrusion temperature is set as：One area
180 DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas,
Nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part of double two or five initiator
It is saved in cylinder and injected in extruder second by liquid pump, by 15 parts of nylon 6 in the third section cylinder of extruder in a manner that side is fed
It is added at body.The material that cross-head squeezes out is obtained into particle through check rod, excessively water cooling, pelletizing；Obtained particle is carried out
(temperature setting is 55 DEG C) is dried, prepares the nylon toughener of resistance to ultralow temperature.
80 parts of nylon, 20 parts of toughener, 0.2 portion of nylon nucleating agent and 0.2 part of carboxy nitrile rubber are pressed weight by step 4
Proportion ingredient is measured, is uniformly mixed material by high-speed mixer；It puts into and standard batten is directly molded into injection molding machine.Injection
Technique is set as：240 DEG C of injection temperature, injection pressure is set as：46MPa, injection moulding speed：70cm/s.
Embodiment 12.
The method that nylon is prepared using toughener of the present invention, it is specific as follows.
Step 1, first, under the conditions of 170 DEG C, 75 parts of ethylene propylene diene rubbers, 25 parts of ethylene octene copolymer are total to
Mixed 5min, adds in 7 parts of dibenzoyl peroxides, and reaction time 7min obtains EPDM/POE thermoplastic elastomer (TPE)s；By 100 parts
Polypropylene, 0.2 part of DCP, 0.5 part of zinc stearate, is placed in the interior mixing of high-speed mixer for 0.25 part 1010 at 0.8 part of maleic anhydride
Even, incorporation time is set as 5min, and KT-1 is prepared through twin-screw extrusion.Extrusion temperature is set as:One 170 DEG C of area, two areas 175
DEG C, three 180 DEG C of areas, four 185 DEG C of areas, five 190 DEG C of areas, six 190 DEG C of areas, seven 185 DEG C of areas, eight 180 DEG C of areas, nine 175 DEG C of areas, head
190℃；Per 7 seconds area's residence times；Host revolution is：500r/min；Prepare KT-1.
Step 2 takes 90 parts of EPDM/POE thermoplastic elastomer (TPE)s, 1.5 parts of maleic anhydrides, 2.5 parts of KT-1,3 parts of carbon nanotubes,
0.25 part of solid initiator, 0.4 part of heat stabilizer, 0.2 part of mixing antioxidant, are placed in high mixer and are uniformly mixed, and put into double
In Screw Extrusion.
Step 3 puts into mixed material in twin-screw extrusion, and extrusion temperature is set as：Extrusion temperature is set as：One area
180 DEG C, two 185 DEG C of areas, three 190 DEG C of areas, four 235 DEG C of areas, five 240 DEG C of areas, six 200 DEG C of areas, seven 195 DEG C of areas, eight 190 DEG C of areas,
Nine 185 DEG C of areas, 200 DEG C of head；Per 6 seconds area's residence times；Host revolution is：550r/min；By 0.15 part of double two or five initiator
It is saved in cylinder and injected in extruder second by liquid pump, by 10 parts of nylon 6 in the third section cylinder of extruder in a manner that side is fed
It is added at body.The material that cross-head squeezes out is obtained into particle through check rod, excessively water cooling, pelletizing；Obtained particle is carried out
(temperature setting is 55 DEG C) is dried, prepares the nylon toughener of resistance to ultralow temperature.
82 parts of nylon, 18 parts of toughener, 0.2 portion of nylon nucleating agent and 0.2 part of carboxy nitrile rubber are pressed weight by step 4
Proportion ingredient is measured, is uniformly mixed material by high-speed mixer；It puts into and standard batten is directly molded into injection molding machine.Injection
Technique is set as：240 DEG C of injection temperature, injection pressure is set as：46MPa, injection moulding speed：70cm/s.
Test method：By adding in the above-mentioned nylon toughener of different numbers, tenacity nylon material when observing subzero 50 DEG C
Notch impact strength.The toughener that 15 parts, 16.5 parts, 18 parts, 20 parts of embodiment 8-10 are obtained respectively with corresponding 85 parts,
83.5 parts, 82 parts, 80 parts of nylon be put into high mixer, be mixed and be uniformly directly thrown into injection molding machine the standard that is molded into
Exemplar can detect the nylon standard batten progressive prepared, and the results are shown in Table 10.
Table 10：Notch impact strength compares when tenacity increased nylon is 50 DEG C subzero.
From above-mentioned testing result：Compared with the low temperature impact properties of pure PA6, the nylon toughener for adding in the present invention can
In the subzero 50 DEG C effective toughening effects for improving nylon, 1-3 times of its notch impact strength is improved.The wherein effect of embodiment 11
Significantly.
Embodiment 13.
The injection-level nylon of resistance to ultralow temperature toughening material, raw material match as follows according to parts by weight：Ethylene propylene diene rubber
70 parts, 30 parts of ethylene octene copolymer, 10 parts of dibenzoyl peroxide, 0.5 part of maleic anhydride, 1 part of KT-1, carbon nanotube 1
Part, 0.3 part of solid initiator, 0.05 part of liquid initiator, 0.1 part of heat stabilizer, 0.3 part of antioxidant, 6 10 parts of nylon.
Embodiment 14.
The injection-level nylon of resistance to ultralow temperature toughening material, raw material match as follows according to parts by weight：Ethylene propylene diene rubber
80 parts, it is 20 parts of ethylene octene copolymer, 5 parts of dibenzoyl peroxide, 2 parts of maleic anhydride, 5 parts of KT-1,5 parts of carbon nanotube, solid
0.05 part of body initiator, 0.3 part of liquid initiator, 0.5 part of heat stabilizer, 0.1 part of antioxidant, 6 20 parts of nylon.
Claims (6)
1. a kind of injection-level nylon of resistance to ultralow temperature toughening material, which is characterized in that its raw material includes according to parts by weight proportioning：
70-80 parts of ethylene propylene diene rubber, 20-30 parts of ethylene octene copolymer, 5-10 parts of dibenzoyl peroxide, maleic anhydride 0.5-2
Part, 1-5 parts of KT-1,1-5 parts of carbon nanotube, 0.05-0.3 parts of solid initiator, 0.05-0.3 parts of liquid initiator, thermostabilization
0.1-0.5 parts of agent, 0.1-0.3 parts of antioxidant, 6 10-20 parts of nylon.
2. the injection-level nylon of resistance to ultralow temperature toughening material as described in claim 1, which is characterized in that its raw material is according to weight
Number proportioning is as follows：70-80 parts of ethylene propylene diene rubber, 20-30 parts of ethylene octene copolymer, 5-10 parts of dibenzoyl peroxide,
1-1.5 parts of maleic anhydride, 2-4 parts of KT-1,1-5 parts of carbon nanotube, 0.05-0.3 parts of solid initiator, liquid initiator 0.1-
0.2 part, 0.3-0.5 parts of heat stabilizer, 0.2-0.3 parts of antioxidant, 6 10-20 parts of nylon.
3. the injection-level nylon of resistance to ultralow temperature toughening material as described in claim 1, which is characterized in that the powdery initiator
For cumyl peroxide (DCP)；The liquid initiator is double two or five vulcanizing agents；The heat stabilizer is zinc stearate, again
It can make lubricant；The KT-1 is the homemade maleic anhydride inoculated polypropylene of company；The antioxidant is Hinered phenols antioxidant
1010 mix antioxidant with 1098, and mixed weight ratio is 1:2.
4. the preparation method of the injection-level nylon of the resistance to ultralow temperature toughening material as described in claim 1-3, which is characterized in that tool
Body includes the following steps：
Step 1, under the conditions of 170-180 DEG C, ethylene propylene diene rubber, ethylene octene copolymer are subjected to blending 3-5min, add in
Dibenzoyl peroxide, reaction time 7-10min obtain EPDM/POE thermoplastic elastomer (TPE)s；
Step 2, the preparation process of KT-1：By 100 parts of polypropylene, 0.7-0.9 parts of maleic anhydrides, 0.1-0.3 solid initiators,
0.3-0,5 parts of heat stabilizers, 0.2-0.3 parts of antioxidant are placed in high-speed mixer and are uniformly mixed, and incorporation time is set as 5min,
KT-1 is prepared through twin-screw extrusion；Extrusion temperature is set as：One 165-175 DEG C of area, two 170-180 DEG C of areas, three area 175-185
DEG C, four 180-190 DEG C of areas, five 185-195 DEG C of areas, six 185-195 DEG C of areas, seven 180-190 DEG C of areas, eight 175-185 DEG C of areas, 9th area
170-180 DEG C, 185-195 DEG C of head；Every area residence time 6-8 seconds；Host revolution is：450-550r/min；The initiation
Agent is cumyl peroxide (DCP)；The heat stabilizer is zinc stearate；The antioxidant is Hinered phenols antioxidant
1010；
Step 3, by weight ratio dispensing take EPDM/POE thermoplastic elastomer (TPE)s, maleic anhydride, KT-1, carbon nanotube, solid to draw
Agent, heat stabilizer, antioxidant are sent out, is placed in high-speed mixer, incorporation time is set as 5min, and raw material is uniformly mixed；
Step 4 puts into uniformly mixed material in the double screw extruder of this field routine, and extrusion temperature is set as：One area
175-185 DEG C, two 180-190 DEG C of areas, three 185-195 DEG C of areas, four 230-240 DEG C of areas, five 235-245 DEG C of areas, six area 195-205
DEG C, seven 190-200 DEG C of areas, eight 185-195 DEG C of areas, nine 180-190 DEG C of areas, 195-205 DEG C of head；Every area residence time 6-8 seconds；
Host revolution is：500-600r/min；When double screw extruder temperature reaches production requirement, liquid initiator is passed through into liquid
It pumps and is injected at second section cylinder of the extruder close to blanking device；Nylon 6 is in a manner that side is fed in the third section of extruder
It is added at cylinder, middle cylinder body is the device that screw rod is wrapped up in double screw extruder；
Step 5, the material for squeezing out cross-head obtain particle through underwater cutpellet, dewaterer and vibrating screen；It is dried
Afterwards, the nylon toughener of resistance to ultralow temperature is obtained；Wherein：The size controlling of pelletizing is in 3-4mm；Particle after dewaterer dehydration contains
Water rate control is below 0.3%；Drying temperature is set as 50-60 DEG C, and drying time is set as 0.5h.
5. the preparation method of the injection-level nylon of resistance to ultralow temperature using any toughening material toughenings of claim 1-3,
It is characterized in that, 15-20 parts of toughener is added in 80-85 parts of nylon, with 0.1-0.3 parts of nylon nucleating agent and carboxyl butyronitrile rubber
0.1-0.3 parts of glue is directly molded after blending；Shooting Technique is set as：230 DEG C -250 DEG C of injection temperature, injection pressure is set
It is set to：46-48MPa, injection moulding speed：65-75cm/s.
6. the preparation method of the as claimed in claim 5 injection-level nylon of resistance to ultralow temperature, which is characterized in that the nucleating agent is
ULTRA-DN Italy Puli perseverance nylon nucleating agent.
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| CN110591100A (en) * | 2019-09-25 | 2019-12-20 | 杭州聚丰新材料有限公司 | Ultralow temperature resistant nylon toughening agent and preparation method and application thereof |
| CN115678261A (en) * | 2022-11-04 | 2023-02-03 | 汉特工程塑料（浙江）有限公司 | Functional nylon composite material for automobile plug cover and preparation method thereof |
| CN115746544A (en) * | 2022-10-25 | 2023-03-07 | 上海锦湖日丽塑料有限公司 | Super-tough nylon material for hot-melt plugging cover and preparation method thereof |
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| CN109206897A (en) * | 2018-09-04 | 2019-01-15 | 惠州市纳米金塑胶科技有限公司 | A kind of transparent grain toughener and preparation method thereof that toughening nylon is cold-resistant |
| CN109880360A (en) * | 2019-02-22 | 2019-06-14 | 河南城建学院 | Resistance to high and cold ballistic nylon composite material and preparation method |
| CN109880360B (en) * | 2019-02-22 | 2021-08-31 | 河南城建学院 | High-cold impact resistant nylon composite material and preparation method thereof |
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| CN110591100B (en) * | 2019-09-25 | 2020-08-04 | 杭州聚丰新材料有限公司 | Ultralow temperature resistant nylon toughening agent and preparation method and application thereof |
| CN115746544A (en) * | 2022-10-25 | 2023-03-07 | 上海锦湖日丽塑料有限公司 | Super-tough nylon material for hot-melt plugging cover and preparation method thereof |
| CN115746544B (en) * | 2022-10-25 | 2024-05-07 | 上海锦湖日丽塑料有限公司 | Super-tough nylon material for hot-melt plugging cover and preparation method thereof |
| CN115678261A (en) * | 2022-11-04 | 2023-02-03 | 汉特工程塑料（浙江）有限公司 | Functional nylon composite material for automobile plug cover and preparation method thereof |
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