CN115386176B - Preparation method of high impact creep-resistant polystyrene - Google Patents
Preparation method of high impact creep-resistant polystyrene Download PDFInfo
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- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B13/00—Conditioning or physical treatment of the material to be shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention relates to a preparation method of high impact creep-resistant polystyrene. The method is carried out based on an air-cooled die face hot-cutting anti-adhesion granulation process, and comprises the steps of mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent, cross-linking agent, nucleating agent, antioxidant and compatilizer to obtain a mixed material, carrying out melt reaction on the mixed material to obtain a blend, extruding the blend by a plastic extruder, cutting the extruded blend by a rotary cutter, carrying out air-cooled cooling treatment on the cut pellets by cooling air to prevent the pellets in a high-temperature state from mutually adhering and piling into a mass when contacting, and facilitating the packaging, transportation and use of the high-impact creep-resistant polystyrene product.
Description
Technical Field
The invention relates to the technical field of resin materials, in particular to a preparation method of high impact-resistant creep-resistant polystyrene.
Background
Polystyrene has the advantages of transparency, good formability, good rigidity, good electrical insulation performance, low moisture absorption, low price and the like, and is widely applied to industries such as buildings, automobiles, household appliances and the like. However, polystyrene is an amorphous random polymer, and a main chain of the polystyrene is provided with a plurality of phenyl side groups, so that the rotation of a main carbon chain is hindered, and the macromolecular flexibility and the normal-temperature elasticity are poor, so that the polystyrene material is brittle and cannot resist impact. Further, polystyrene is used as an amorphous high polymer at a temperature not higher than the glass transition temperature, and when the use temperature is close to the glass transition temperature, the creep resistance of the material is deteriorated due to the increase in molecular mobility, and the use value is lost. The application fields and application environments of polystyrene are greatly limited due to the defects in impact resistance and creep resistance.
Chinese patent CN101735526B discloses a modified high impact polystyrene composition and a preparation method thereof, wherein the preparation raw materials comprise styrene-butadiene rubber, inorganic filler, styrene-butadiene impact copolymer and high impact polystyrene, and the prepared composition has the characteristics of good toughness and rigidity, high low-temperature impact performance and the like, but the high-temperature creep property of the polystyrene is not improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of high-impact creep-resistant polystyrene, which is carried out based on an air-cooled die surface hot-cutting anti-adhesion granulation process, and the prepared polystyrene has good high-impact resistance and high-temperature creep resistance.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the preparation method of the high impact creep resistant polystyrene comprises the following steps:
mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS (styrene-butadiene-styrene block copolymer), poly (arylene ether nitrile) resin, creep resistant agent, cross-linking agent, nucleating agent, antioxidant and compatilizer to obtain a mixed material; wherein the mass ratio of the polystyrene resin, the linear low-density polyethylene resin, the thermoplastic elastomer SBS, the poly (arylene ether nitrile) resin, the creep resistant agent, the cross-linking agent, the nucleating agent, the antioxidant and the compatilizer is (70-100): (10-20): (5-15): (10-20): (5-10): (0.05-0.1): (0.01-0.05): (1-2): (5-10);
and step two, carrying out melt reaction on the mixed materials to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep-resistant polystyrene.
Preferably, the melting temperature is 265 to 280 ℃.
Preferably, the creep-resistant agent comprises barium sulfate micro powder, calcium carbonate micro powder and graphite micro powder; the mass ratio of the barium sulfate micro powder to the calcium carbonate micro powder to the graphite micro powder is (1-2): (1-2): (3-6).
Preferably, the cross-linking agent comprises any one of benzoyl peroxide and dicumyl peroxide.
Preferably, the nucleating agent comprises dibutyl sebacate.
Preferably, the antioxidant comprises antioxidant 1010 (tetrakis [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propanoate ] pentaerythritol ester).
Preferably, the compatibilizer comprises maleic anhydride grafted SBS.
The invention also provides air-cooled die surface hot cutting equipment which comprises a plastic extruder, a hot cutting mechanism, an air-cooled mechanism, a cooling and dedusting mechanism and a material collecting bin, wherein the hot cutting mechanism is arranged at the discharge end of the plastic extruder and is used for cutting the blend extruded by the plastic extruder; the air cooling mechanism is arranged between the plastic extruder and the hot cutting mechanism and used for carrying out air cooling on the cut granules through air supply, meanwhile, the granules are blown by cooling air to be movably conveyed in the air cooling mechanism, and the granules are continuously cooled in the conveying process; the aggregate bin is arranged at the tail end of the air cooling mechanism and is used for collecting the air-cooled aggregate; the cooling and dust removing mechanism comprises a cooling and dust removing box, the cooling and dust removing box is arranged between the plastic extruder and the air cooling mechanism, a water supply conduit is arranged at the top end of the cooling and dust removing box, a plurality of spray headers extending into the cooling and dust removing box are connected and arranged at the bottom end of the water supply conduit, and the water supply conduit provides cooling water for the spray headers so that the spray headers spray the cooling water in the cooling and dust removing box to form a water curtain; sliding mounting has annular scraper blade on the inner wall of cooling dust removal case, annular scraper blade pass through lift drive assembly with the transmission of hot cutting mechanism is connected, works as when the work of hot cutting mechanism is cut, hot cutting mechanism passes through lift drive assembly synchronous drive annular scraper blade is in the inner wall lift removal of cooling dust removal case.
Further, hot cutting mechanism includes the mount pad, fixed mounting has the motor on the mount pad, rotate on the motor install extend to the pivot of plastics extruder discharge gate one side, the terminal fixed mounting of pivot has the cutter.
Further, the air-cooling mechanism includes centrifugal fan and plenum, plenum fixed mounting in the discharge end of plastic extruder, just the discharge gate of plastic extruder with the cutter all set up in the plenum, centrifugal fan install in one side of plenum, just centrifugal fan's air outlet with the one end intercommunication of cooling dust removal case, the other end of cooling dust removal case with the one end intercommunication of plenum, the conveyer pipe is installed in the other end connection of plenum.
Further, the lifting driving assembly comprises a transmission unit and a reciprocating lead screw, the reciprocating lead screw is rotatably installed in the cooling dust removal box, the top end of the reciprocating lead screw is connected with the rotating shaft in a transmission mode, a threaded sleeve is rotatably installed on the reciprocating lead screw, and the threaded sleeve is fixedly connected with the annular scraper.
Furthermore, the transmission unit comprises a worm, a worm wheel and a transmission shaft, the transmission shaft is rotatably arranged on one side of the air chamber, the worm is fixedly arranged on the rotation shaft, the worm wheel is fixedly arranged at the top end of the transmission shaft, and the worm is in meshing transmission connection with the worm wheel; the bottom fixed mounting of transmission shaft has the driving gear, the top fixed mounting of reciprocal lead screw has driven gear, just the driving gear with meshing transmission is connected between the driven gear.
Further, the bottom of cooling dust removal case is connected and is installed the funnel that catchments, the bottom of funnel that catchments is connected with the drain pipe, just catchment the funnel with the sealing plug has been clamped between the drain pipe, the top surface fixed mounting of sealing plug has the connecting rod, the top fixed mounting of connecting rod has the floater, connecting rod surface slidable mounting has the spacing ring, the outer lane fixed mounting of spacing ring has the support, the one end fixed connection of support in on the inner wall of funnel that catchments, the lower extreme movable sleeve of connecting rod is equipped with and is located spring between sealing plug and the spacing ring.
Furthermore, the outer ring of the sealing plug is provided with a sliding hole, a sliding block is arranged in the sliding hole in a sliding mode, the inner side end of the sliding block is abutted to a reset spring, a pin shaft is fixedly arranged at the outer side end of the sliding block, and a pin hole corresponding to the pin shaft is formed in the inner wall of the water collection funnel.
Furthermore, a plurality of obliquely arranged guide plates are fixedly mounted on the inner wall of the water collection funnel.
Furthermore, the cooling and dust removing mechanism also comprises a water storage tank and a filter box, wherein a refrigerator is arranged on one side of the water storage tank, a water outlet of the water storage tank is communicated with the water supply conduit, and the water supply conduit is connected with and provided with a booster pump; the water inlet of the filter box is communicated with the water discharge pipe, the filter box is communicated with the water storage tank through a return pipe, and the return pipe is connected with a circulating pump.
Compared with the prior art, the invention has the following beneficial effects:
the preparation method of the high impact creep resistant polystyrene is carried out based on an air cooling die surface hot cutting anti-adhesion granulation process, and comprises the steps of mixing raw materials to obtain a mixed material, melting the mixed material to obtain a blend, extruding the blend by a plastic extruder, cutting the extruded blend by a rotary cutter, and cooling the cut granules to prevent the granules in a high temperature state from being adhered and stacked when in contact, so that the prepared polystyrene is in a non-uniform granular shape and influences the later use; the invention relates to a preparation method of high impact creep-resistant polystyrene, which adopts polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent, cross-linking agent, nucleating agent, antioxidant and compatilizer as raw materials, wherein the linear low-density polyethylene resin and the thermoplastic elastomer SBS can effectively improve the toughness of the polystyrene resin and improve the impact resistance of the polystyrene material; because the polystyrene molecules are subjected to crosslinking reaction, the polystyrene molecules with a crosslinked network structure are obtained, and the crosslinked network structure limits the movement of a molecular chain segment, so that the glass transition temperature is increased, and the high-temperature creep resistance of the polystyrene material is enhanced; the poly (arylene ether nitrile) (PEN) has excellent characteristics of high temperature resistance, high mechanical strength, chemical corrosion resistance, good creep resistance and the like, and can effectively improve the mechanical strength and the glass transition temperature (Tg) of a polystyrene material when being added into polystyrene, thereby improving the impact resistance of the polystyrene material and the high-temperature creep temperature of the polystyrene material, namely improving the creep resistance of the polystyrene material; the creep resistance agent is added to play a role in filling modification, and the creep resistance and the heat resistance of the polystyrene material can be effectively improved.
According to the air-cooled die surface hot cutting equipment, the cooling dust removal box is arranged between the centrifugal fan and the air chamber, so that the air supplied by the centrifugal fan needs to pass through the cooling dust removal box, the spray head is arranged in the cooling dust removal box and can spray cooling water into the cooling dust removal box to form a water curtain, and when the cooling air supplied by the centrifugal fan passes through the water curtain, the water curtain can adsorb and remove dust in the cooling air, so that the cooling air is cleaner and cleaner, and therefore the dust is prevented from being brought into the equipment through the cooling air and adhered to granules when the air cools the cooling water, and the production quality of the granules can be improved; and the water curtain can absorb the heat in the cooling air and reduce the temperature of the cooling air, thereby improving the air-cooled heat dissipation effect on the granules, reducing the heat dissipation and cooling time of the granules, improving the granulation efficiency of the equipment, simultaneously shortening the conveying length of the granules in the conveying pipe, reducing the volume of the equipment and facilitating the installation and the use of the equipment.
Drawings
FIG. 1 is a flow chart of the manufacturing process of the present invention;
FIG. 2 is a graph showing the results of impact resistance tests on polystyrenes obtained in examples of the present invention and comparative examples;
FIG. 3 is a graph showing the results of creep resistance tests on polystyrenes obtained in examples of the present invention and comparative examples;
FIG. 4 is a schematic perspective view of an air-cooled mold surface hot-cutting apparatus according to the present invention;
FIG. 5 is a schematic view of a three-dimensional cutting structure of the air-cooled mold surface hot cutting device according to the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5A;
FIG. 7 is an enlarged view of a portion of FIG. 5B;
FIG. 8 is an enlarged view of a portion of the structure of FIG. 5.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a plastic extruder; 2. a hot cutting mechanism; 21. a mounting seat; 22. a motor; 23. a rotating shaft; 24. a cutter; 3. an air cooling mechanism; 31. a centrifugal fan; 32. an air chamber; 33. a delivery pipe; 4. a cooling and dust removing mechanism; 41. cooling the dust removal box; 43. a water supply conduit; 44. a water storage tank; 45. a refrigerator; 46. a filter box; 47. a transmission unit; 48. a booster pump; 49. a shower head; 410. a water collection funnel; 411. a floating ball; 412. a baffle; 413. a support; 414. a limiting ring; 415. a connecting rod; 416. a spring; 417. a sealing plug; 418. a drain pipe; 419. a circulation pump; 420. a return pipe; 421. an annular scraper; 422. a reciprocating screw rod; 423. a threaded sleeve; 424. a slide hole; 425. a return spring; 426. a slider; 427. a pin shaft; 428. a pin hole; 471. a worm; 472. a worm gear; 473. a drive shaft; 474. a driving gear; 475. a driven gear; 5. a material collecting bin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; wherein the mass ratio of polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 70:10:5:10:1:1:3:0.05:0.01:1:5;
and step two, carrying out melt reaction on the mixed materials at 265 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Example 2
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent benzoyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; wherein the mass ratio of polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent benzoyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 100:20:15:20:2:2:6:0.1:0.05:2:10;
and step two, carrying out melt reaction on the mixed materials at 280 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Example 3
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep resistant agent barium sulfate micropowder, creep resistant agent calcium carbonate micropowder, creep resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; wherein the mass ratio of polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 80:12:8:13:1.5:1.5:4.5:0.06:0.02:1.2:6;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Example 4
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; wherein the mass ratio of polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 85:15:10:15:1.2:1.2:3.6:0.075:0.03:1.5:7.5;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Example 5
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; wherein the mass ratio of polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 95:17:13:17:1.8:1.8:5.4:0.09:0.04:1.8:9;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Comparative example 1
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; wherein the mass ratio of the polystyrene resin, the linear low-density polyethylene resin, the thermoplastic elastomer SBS, the poly (arylene ether nitrile) resin, the cross-linking agent dicumyl peroxide, the nucleating agent dibutyl sebacate, the antioxidant 1010 and the compatilizer maleic anhydride grafted SBS is 85:15:10:15:0.075:0.03:1.5:7.5;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Comparative example 2
Preparation method of high-impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, creep-resistant agent barium sulfate micro powder, creep-resistant agent calcium carbonate micro powder, creep-resistant agent graphite micro powder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; the mass ratio of polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, creep-resistant agent barium sulfate micro powder, creep-resistant agent calcium carbonate micro powder, creep-resistant agent graphite micro powder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 85:15:10:1.2:1.2:3.6:0.075:0.03:1.5:7.5;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene.
Comparative example 3
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micro powder, creep-resistant agent calcium carbonate micro powder, creep-resistant agent graphite micro powder, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; the mass ratio of polystyrene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 85:10:15:1.2:1.2:3.6:1.5:7.5;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep-resistant polystyrene.
Comparative example 4
Preparation method of high impact creep-resistant polystyrene
Mixing polystyrene resin, linear low-density polyethylene resin, poly (arylene ether nitrile) resin, creep resistant agent barium sulfate micro powder, creep resistant agent calcium carbonate micro powder, creep resistant agent graphite micro powder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS to obtain a mixed material; the mass ratio of polystyrene resin, linear low-density polyethylene resin, poly (arylene ether nitrile) resin, creep-resistant agent barium sulfate micropowder, creep-resistant agent calcium carbonate micropowder, creep-resistant agent graphite micropowder, cross-linking agent dicumyl peroxide, nucleating agent dibutyl sebacate, antioxidant 1010 and compatilizer maleic anhydride grafted SBS is 85:15:15:1.2:1.2:3.6:0.075:0.03:1.5:7.5;
and step two, carrying out melt reaction on the mixed materials at 275 ℃ to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep-resistant polystyrene.
In the above examples and comparative examples, the polystyrene resin was supplied by Shanghai Aladdin Biotechnology, inc., CAS number 9003-53-6, and average molecular weight was 26w; linear low density polyethylene resins are supplied by ningpohsui plastification limited under the brand name: m200024, manufacturer: saxabic; the thermoplastic elastomer SBS is provided by Shanghai area chemical industry Co., ltd, cargo number: SBS3546; the polyarylene ether nitrile resin was supplied by Awawa plastics trade Co., ltd, of Dongguan, and manufactured by: french arkema, cat No.: 019858; the barium sulfate micro powder is provided by Shenzhen Shangqi powder science and technology Limited, and the cargo number is: HY-A10, particle size: 5000 meshes; the calcium carbonate micropowder is provided by Suzhou Mingjiang Fine chemical Co., ltd., product number: MJ-NM90, particle size: 15000 meshes; graphite micropowder is supplied by al material limited, sclause, cat #: YL202110201, particle size: 8000 meshes; dicumyl peroxide is provided by the national pharmaceutical group chemical agents limited, brand: shanghai test, specification: chemically pure (50% water); benzoyl peroxide is provided by the national pharmaceutical group chemical agents limited, brand: shanghai test, specification: chemically pure (30% water); dibutyl sebacate is offered by the national pharmaceutical group chemical agents limited, brand: shanghai test, specification: analyzing and purifying; antioxidant 1010 is supplied by basf, germany, cat #: 50375087BCH; the compatilizer maleic anhydride grafted SBS is provided by Guangdong Chuanheng new material science and technology limited, and has the following model: CH9909.
Test examples
The high impact creep resistant polystyrenes obtained in examples 1 to 5 and comparative examples 1 to 4 were subjected to a performance test:
(1) And (3) testing the impact resistance: the notched Izod impact strength of polystyrene was determined according to the method of standard GB/T1843-2008;
(2) Creep resistance test: testing the tensile creep modulus according to a method in a standard GB/T11546.1-2008, wherein the testing temperature is 120 ℃, and the tensile creep modulus is 2 min; the test results are shown in table 1:
TABLE 1
As can be seen from Table 1, the polystyrene prepared by the invention has good high impact creep resistance, and the notch impact strength reaches 15.2KJ/m 2 The tensile creep modulus reaches 15.8MPa, and the higher the tensile creep modulus is, the better the high-temperature creep resistance is. In the comparative example 1, as the creep-resistant agent barium sulfate micro powder, the creep-resistant agent calcium carbonate micro powder and the creep-resistant agent graphite micro powder are not added, the notch impact strength is not greatly influenced, but the tensile creep modulus is obviously reduced; in comparative example 2, since there is noThe poly (arylene ether nitrile) resin is added, so that the notch impact strength and the tensile creep modulus are reduced to some extent; in comparative example 3, since no linear low density polyethylene resin, crosslinking agent dicumyl peroxide, nucleating agent dibutyl sebacate were added, no crosslinking reaction was performed, but only physical melt blending between the raw materials, both the notch impact strength and the tensile creep modulus were greatly reduced; in comparative example 4, the tensile creep modulus of polystyrene was not greatly affected because SBS, a thermoplastic elastomer, was not added, but the toughness of polystyrene was greatly reduced, as indicated by a significant drop in notched impact strength.
Example 6
The embodiment provides an air-cooling die surface hot cutting device, please refer to fig. 4-5, which includes a plastic extruder 1, a hot cutting mechanism 2, an air-cooling mechanism 3, a cooling and dust removing mechanism 4 and a collecting bin 5; the hot cutting mechanism 2 is arranged at the discharge end of the plastic extruder 1 and is used for cutting the blend extruded by the plastic extruder 1; the air cooling mechanism 3 is arranged between the plastic extruder 1 and the hot cutting mechanism 2, and is used for carrying out air cooling on the cut granules by feeding cooling air, blowing the granules by the cooling air to move and convey in the air cooling mechanism 3, and continuously cooling the granules in the conveying process; the aggregate bin 5 is arranged at the tail end of the air cooling mechanism 3 and is used for collecting the air-cooled aggregate; the cooling and dust removing mechanism 4 comprises a cooling and dust removing box 41, the cooling and dust removing box 41 is installed between the plastic extruder 1 and the air cooling mechanism 3, so that cooling air sent by the air cooling mechanism 3 needs to pass through the inside of the cooling and dust removing box 41, a water supply conduit 43 is installed at the top end of the cooling and dust removing box 41, a plurality of spray headers 49 extending into the cooling and dust removing box 41 are connected and installed at the bottom ends of the water supply conduit 43, the water supply conduit 43 can provide cooling water for the spray headers 49, so that the spray headers 49 spray the cooling water in the cooling and dust removing box 41 to form a water curtain, when the cooling air sent by the air cooling mechanism 3 passes through, the water curtain can adsorb and remove dust in the cooling air, so that the cooling air is cleaner, and the dust is prevented from being brought into equipment by the cooling air and adhered to granules during air cooling, and the production quality is improved; the water curtain can absorb the heat in the cooling air and reduce the temperature of the cooling air, so that the air-cooling heat dissipation effect on the granular materials is improved, the granular material heat dissipation and cooling time is reduced, the equipment granulation efficiency is improved, and meanwhile, the conveying length of the granular materials in the air-cooling mechanism 3 can be shortened, so that the equipment volume is reduced, and the equipment is convenient to install and use; slidable mounting has annular scraper blade 421 on cooling dust removal case 41's the inner wall, annular scraper blade 421 through the lift drive assembly with hot cutting mechanism 2 transmission is connected, works as hot cutting mechanism 2 carries out the cutting during operation, hot cutting mechanism 2 is through lift drive assembly synchronous drive annular scraper blade 421 is in the inner wall lift of cooling dust removal case 41 removes to strike off along with the dust of cooling water adhesion on cooling dust removal case 41 inner wall, and the dust of scraping down is discharged along with the ponding of cooling dust removal case 41 bottom together, thereby keeps clean in making cooling dust removal case 41, prevents that the dust from gathering the normal work that influences cooling dust removal case.
Referring to fig. 4-5, the hot cutting mechanism 2 includes a mounting base 21, a motor 22 is fixedly mounted on the mounting base 21, a rotating shaft 23 extending to one side of a discharge port of the plastic extruder 1 is rotatably mounted on the motor 22, and a cutter 24 is fixedly mounted at the tail end of the rotating shaft 23; wherein, the cutter 24 is tightly attached to the discharge port of the plastic extruder 1, when cutting, the motor 22 drives the rotating shaft 23 to rotate, so that the cutter 24 is driven to rotate by the rotating shaft 23, and the cutter 24 cuts the blend extruded by the plastic extruder 1 in the rotating process, and cuts the blend extruded by the plastic extruder 1 into granules.
Referring to fig. 4 to 5, the air cooling mechanism 3 includes a centrifugal fan 31 and an air chamber 32, the air chamber 32 is fixedly mounted at a discharge end of the plastic extruder 1, a discharge port of the plastic extruder 1 and the cutter 24 are both disposed in the air chamber 32, the centrifugal fan 31 is mounted at one side of the air chamber 32, an air outlet of the centrifugal fan 31 is communicated with one end of the cooling and dust removing box 41, the other end of the cooling and dust removing box 41 is communicated with one end of the air chamber 32, and the other end of the air chamber 32 is connected with a delivery pipe 33; centrifugal fan 31 during operation continuously extracts the outside air and forms the cooling air to in carrying the air compartment 32 with the cooling air, carry out primary cooling to the aggregate after the cutting, the aggregate gets into conveyer pipe 33 under the cooling air blows simultaneously, carries out the transport of aggregate through conveyer pipe 33, and the aggregate continues cooling through the forced air cooling in transportation process, according to the length of aggregate forced air cooling efficiency adjustment conveyer pipe 33, when making the aggregate follow the conveyer pipe 33 in the time of seeing off, the aggregate just accomplishes the cooling process.
The air-cooled die surface hot cutting equipment can meet the requirements of extrusion, cutting and cooling treatment of the blend in the preparation methods of the high impact creep-resistant polystyrene in the above examples and comparative examples.
Referring to fig. 5-6, the lifting driving assembly includes a transmission unit 47 and a reciprocating screw rod 422, the reciprocating screw rod 422 is rotatably installed in the cooling and dust removing box 41, the top end of the reciprocating screw rod 422 is in transmission connection with the rotating shaft 23 through the transmission unit 47, a threaded sleeve 423 is rotatably installed on the reciprocating screw rod 422, and the threaded sleeve 423 is fixedly connected with the annular scraper 421; when the motor 22 drives the rotating shaft 23 and the cutter 24 to rotate, the rotating shaft 23 drives the reciprocating screw rod 422 to rotate through the transmission unit 47, the reciprocating screw rod 422 drives the threaded sleeve 423 to do reciprocating lifting motion along the reciprocating screw rod 422 in the rotating process through threaded transmission, and the threaded sleeve 423 drives the annular scraper 421 to do reciprocating lifting motion along the inner wall of the cooling and dust removing box 41 in the lifting process, so that the inner wall of the cooling and dust removing box 41 is cleaned, the rotating motion of the rotating shaft 23 can be converted into the lifting motion of the annular scraper 421 by using the reciprocating screw rod 422 as a driving part, and the lifting drive of the annular scraper 421 is more convenient.
Referring to fig. 5-6, the transmission unit 47 includes a worm 471, a worm wheel 472 and a transmission shaft 473, the transmission shaft 473 is rotatably installed at one side of the air chamber 32, the worm 471 is fixedly installed on the rotation shaft 23, the worm wheel 472 is fixedly installed at the top end of the transmission shaft 473, and the worm 471 is in meshing transmission connection with the worm wheel 472; a driving gear 474 is fixedly mounted at the bottom end of the transmission shaft 473, a driven gear 475 is fixedly mounted at the top end of the reciprocating screw rod 422, and the driving gear 474 is in meshing transmission connection with the driven gear 475; when the rotating shaft 23 rotates, the worm 471 is driven to synchronously rotate, the worm 471 is meshed with the driving worm wheel 472 to rotate, the worm wheel 472 drives the transmission shaft 473 and the driving gear 474 to rotate in the rotating process, the driving gear 474 is meshed with the driving driven gear 475 to rotate in the rotating process, the driven gear 475 drives the reciprocating screw rod 422 to rotate, the transmission between the rotating shaft 23 and the reciprocating screw rod 422 is realized through the cooperation of the worm and the gear, the transmission ratio of the worm and the gear is large, the transmission process is more labor-saving, the workload of the rotating shaft 23 is reduced, the rotating speed of the reciprocating screw rod 422 can be obviously reduced, the reciprocating lifting speed of the annular scraper 421 is reduced, the abrasion speed of the annular scraper 421 is reduced, and the service life of the annular scraper 421 is prolonged.
Referring to fig. 5, 6 and 8, a water collecting funnel 410 is connected to the bottom of the cooling and dust removing box 41, a drain pipe 418 is connected to the bottom end of the water collecting funnel 410, a sealing plug 417 is clamped between the water collecting funnel 410 and the drain pipe 418, a connecting rod 415 is fixedly installed on the top surface of the sealing plug 417, a floating ball 411 is fixedly installed on the top end of the connecting rod 415, a limiting ring 414 is slidably installed on the surface of the connecting rod 415, a bracket 413 is fixedly installed on the outer ring of the limiting ring 414, one end of the bracket 413 is fixedly connected to the inner wall of the water collecting funnel 410, and a spring 416 located between the sealing plug 417 and the limiting ring 414 is movably sleeved on the lower end of the connecting rod 415; wherein, the spring 416 is in a compressed state, so that the sealing plug 417 is abutted against the bottom end of the water collection funnel 410 through the reset elasticity of the spring 416, thereby sealing the water outlet of the water collection funnel 410, preventing the cooling air conveyed by the centrifugal fan 31 into the cooling dust removal box 41 from leaking outwards through the water collection funnel 410, thereby preventing the waste of the cooling air, ensuring that the cooling air in the air chamber 32 and the conveying pipe 33 is sufficient, and when the shower head 49 continuously works, the cooling water can be gradually accumulated in the water collection funnel 410, so that the water level rises, when the water level rises to the position of the floating ball 411, the floating ball 411 can generate buoyancy, and the buoyancy of the floating ball 411 is gradually increased along with the rise of the liquid level, when the buoyancy of the floating ball 411 is greater than the elasticity of the spring 416, the floating ball 411 synchronously floats upwards along with the rise of the liquid level, and the water outlet is not blocked any more when the water level rises, the sealing plug 417 is driven by the connecting rod 415, then the accumulated water in the water collection funnel 410 is gradually discharged from the water outlet, and simultaneously, and the water in the water collection funnel 410 is gradually reduced gradually, so that the water outlet is synchronously descended along with the liquid level, until the water level is sealed, and the water collection funnel, and the water is sealed, so that the water is discharged in the water collection funnel 410, and the water collection funnel 410 is sealed again, and the water is discharged repeatedly, and the water collection funnel 410, and the water is discharged, and the water collection funnel, and the water is discharged again, and the water is sealed water is discharged, and the water is sealed in the water collection funnel 410, and the water outlet is sealed water is discharged in the water collection funnel 410, and the floating ball 410, and the floating plug 410, and the water is discharged in the water collection funnel, and the water outlet is sealed water is sealed in a reciprocating process, so that the water discharge process, and the water is prevented from the floating ball 410, and the water discharge process, and the water collection funnel 410, and the water discharge process; furthermore, since the water collecting funnel 410 adopts intermittent drainage, in order to ensure the drainage efficiency, the diameter of the water outlet of the water collecting funnel 410 needs to be larger than the inner diameter of the water supply conduit 43, so as to prevent excessive water accumulation in the water collecting funnel 410 and the cooling and dust removing box 41 from affecting the normal operation of the cooling and dust removing box 41.
Referring to fig. 5 and 7, a sliding hole 424 is formed in an outer ring of the sealing plug 417, a sliding block 426 is slidably mounted in the sliding hole 424, a return spring 425 abuts against an inner side end of the sliding block 426, a pin 427 is fixedly mounted on an outer side end of the sliding block 426, and a pin hole 428 corresponding to the pin 427 is formed in an inner wall of the water collection funnel 410; the end of the pin 427 is provided with an arc end, and the arc end abuts against the inner wall of the water collecting funnel 410, when the sealing plug 417 seals the water outlet, the arc end is inserted into the pin hole 428 under the elastic force of the return spring 425, so as to further pin-connect and lock the sealing plug 417, when the water level in the water collecting funnel 410 rises and the floating ball 411 is subjected to buoyancy, the floating ball 411 can float in the accumulated water only by the buoyancy of the floating ball 411 being larger than the sum of the locking force of the arc end and the elastic force of the spring 416, and the sealing plug 417 is driven to move upwards to be opened, and after the sealing plug 417 moves upwards, the arc end of the pin 427 retracts from the pin hole 428 to be separated, no longer having the locking force, so that the resistance received by the floating ball 417 and the floating ball 411 is reduced, and the floating ball 411 can drive the sealing plug 417 to float upwards to a larger height in the water collecting funnel 410, so that the water outlet opening is larger, the water discharging speed is higher, so as to further improve the water discharging efficiency, and by increasing the water discharging speed, the dust accumulated in the cooling dust removing box 41 and the water collecting funnel 410 can be kept clean.
Referring to fig. 6, a plurality of obliquely arranged guide plates 412 are fixedly installed on the inner wall of the water collecting funnel 410, when the water collecting funnel 410 discharges water, the guide plates 412 can block and guide water flow, and a vortex composed of a plurality of inclined flow channels is formed in the water collecting funnel 410, so that accumulated water and dust and impurities in the accumulated water are fully disturbed during water discharge, the dust and impurities are discharged along with the accumulated water, the dust discharging and removing effect can be further improved, and the interior of the cooling dust removing box 41 and the interior of the water collecting funnel 410 are kept clean.
Referring to fig. 4-5, the cooling and dust removing mechanism 4 further includes a water storage tank 44 and a filter tank 46, a refrigerator 45 is installed on one side of the water storage tank 44, a water outlet of the water storage tank 44 is communicated with the water supply conduit 43, and a booster pump 48 is installed on the water supply conduit 43 in a connecting manner; the water inlet of the filter tank 46 is communicated with the water discharge pipe 418, the filter tank 46 is communicated with the water storage tank 44 through a return pipe 420, and a circulating pump 419 is connected and installed on the return pipe 420; the refrigerator 45 can refrigerate the cooling water in the water storage tank 44 to reduce the temperature of the cooling water, and the booster pump 48, the water supply conduit 43 and the spray header 49 are matched with the cooling dust removal tank 41 to spray the cooling water to form a low-temperature water curtain, so that the temperature of cooling air can be further reduced, and the air-cooling heat dissipation efficiency of granules is improved; after the accumulated water in the cooling and dust removing tank 41 is conveyed into the filter tank 46 through the water collecting funnel 410 and the water discharge pipe 418, the filter tank 46 can filter and remove dust to the accumulated water, so that the accumulated water is recovered to be clean, and finally the circulating pump 419 and the return pipe 420 are matched to convey the filtered accumulated water to the water storage tank 44, so that the circulating utilization of the cooling water is realized.
The use method comprises the following steps: firstly, a motor 22 drives a rotating shaft 23 to rotate, so that a cutter 24 is driven to rotate through the rotating shaft 23, the cutter 24 cuts the blend of the plastic extruder 1 in the rotating process, and the copolymer extruded by the plastic extruder 1 is cut into granules; the centrifugal fan 31 continuously pumps outside air to form cooling air, the cooling air is conveyed into the air chamber 32 through the cooling and dust removing box 41, meanwhile, the water supply guide pipe 43 conveys high-pressure cooling water to the spray head 49 through the booster pump 48, so that the spray head 49 sprays the cooling water in the cooling and dust removing box 41 to form a water curtain, when the cooling air conveyed by the centrifugal fan 31 passes through the water curtain, the water curtain can adsorb and remove dust in the cooling air, the cooling air is cleaner and cleaner, the dust mixed in the cooling air is prevented from being brought into the air chamber 32, the water curtain can absorb heat in the cooling air, and the temperature of the cooling air is reduced; the cooling air primarily cools the cut granules in the air chamber 32, meanwhile, the granules enter the conveying pipe 33 under the blowing of the cooling air, the granules are conveyed through the conveying pipe 33, the granules are continuously cooled and cooled through air cooling in the conveying process, and meanwhile, the granules are dried through air drying in the granule blowing process by the cooling air, so that the granules are kept dry until the granules enter the aggregate bin 5 from the tail end of the conveying pipe 33; when the motor 22 drives the rotating shaft 23 and the cutting knife 24 to cut rotationally, the rotating shaft 23 drives the worm 471 to rotate synchronously, so that the worm 471 is meshed with the driving worm wheel 472 to rotate, the driving shaft 473 and the driving gear 474 are driven to rotate in the rotation process of the worm wheel 472, the driving gear 474 is meshed with the driving driven gear 475 to rotate in the rotation process of the driving gear 475, and the driven gear 475 drives the reciprocating screw rod 422 to rotate; the reciprocating screw rod 422 drives the threaded sleeve 423 to reciprocate along the reciprocating screw rod 422 through threaded transmission in the rotating process, and the threaded sleeve 423 drives the annular scraping plate 421 to reciprocate along the inner wall of the cooling and dust removing box 41 in the lifting process, so that dust adhered to the inner wall of the cooling and dust removing box 41 along with cooling water is scraped, and the scraped dust is deposited in accumulated water at the bottom of the cooling and dust removing box 41;
the sealing plug 417 seals the water outlet of the water collecting funnel 410, so as to prevent the cooling air conveyed by the centrifugal fan 31 into the cooling and dust removing box 41 from leaking outwards through the water collecting funnel 410, and simultaneously, accumulated water can be gradually generated in the water collecting funnel 410 and the cooling and dust removing box 41, when the water level of the accumulated water at the bottom of the cooling and dust removing box 41 rises to the position of the floating ball 411, the floating ball 411 can generate buoyancy, and along with the rise of the liquid level, the buoyancy of the floating ball 411 is gradually increased, when the buoyancy of the floating ball 411 is larger than the sum of the elastic force of the spring 416 and the locking force of the pin 427, the floating ball 411 floats upwards synchronously along with the rise of the liquid level, and the sealing plug 417 is driven by the connecting rod 415 to move upwards in the rising process so as not to block the water outlet any more, then the accumulated water and accumulated dust in the water collecting funnel 410 are gradually discharged from the water outlet, meanwhile, the liquid level in the water collecting funnel 410 is gradually reduced, so that the floating ball 411 and the sealing plug 417 move downwards synchronously along with the liquid level until the water outlet is sealed again, and the water is reciprocated, so that the water collecting funnel 410 is sealed and the water discharging process is carried out, and the water outlet is not leaked by the water collecting funnel 410, and the cooling air in the water discharging process, and the cooling air is also not generated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The air-cooled die surface hot cutting equipment is used for an air-cooled die surface hot cutting anti-adhesion granulation process, and the process is used for preparing high impact creep-resistant polystyrene, and is characterized by comprising the following steps: mixing polystyrene resin, linear low-density polyethylene resin, thermoplastic elastomer SBS, poly (arylene ether nitrile) resin, creep resistant agent, cross-linking agent, nucleating agent, antioxidant and compatilizer to obtain a mixed material; wherein, the mass ratio of the polystyrene resin, the linear low density polyethylene resin, the thermoplastic elastomer SBS, the poly-arylene ether nitrile resin, the creep resistant agent, the cross-linking agent, the nucleating agent, the antioxidant and the compatilizer is (70-100): (10-20): (5-15): (10-20): (5-10): (0.05-0.1): (0.01-0.05): (1-2): (5-10); step two, carrying out melt reaction on the mixed materials to obtain a blend, and extruding, cutting and cooling the blend to obtain the high impact creep resistant polystyrene;
the equipment comprises a plastic extruder, a hot cutting mechanism, an air cooling mechanism, a cooling and dedusting mechanism and a material collecting bin; the hot cutting mechanism is arranged at the discharge end of the plastic extruder; the air cooling mechanism is arranged between the plastic extruder and the hot cutting mechanism; the material collecting bin is arranged at the tail end of the air cooling mechanism; the cooling and dust removing mechanism comprises a cooling and dust removing box, the cooling and dust removing box is arranged between the plastic extruder and the air cooling mechanism, a water supply conduit is arranged at the top end of the cooling and dust removing box, a plurality of spray headers extending into the cooling and dust removing box are connected and arranged at the bottom end of the water supply conduit, and the water supply conduit provides cooling water for the spray headers so that the spray headers spray the cooling water in the cooling and dust removing box to form a water curtain; an annular scraper is slidably mounted on the inner wall of the cooling dust removal box, and the annular scraper is in transmission connection with the hot cutting mechanism through a lifting driving assembly; the air cooling mechanism comprises a centrifugal fan and an air chamber, the air chamber is fixedly arranged at the discharge end of the plastic extruder, a discharge port and a cutter of the plastic extruder are both arranged in the air chamber, the centrifugal fan is arranged on one side of the air chamber, an air outlet of the centrifugal fan is communicated with one end of the cooling and dust removing box, the other end of the cooling and dust removing box is communicated with one end of the air chamber, and the other end of the air chamber is connected with a conveying pipe; the lifting driving assembly comprises a transmission unit and a reciprocating screw rod, the reciprocating screw rod is rotatably installed in the cooling and dust removing box, the top end of the reciprocating screw rod is in transmission connection with a rotating shaft through the transmission unit, a threaded sleeve is rotatably installed on the reciprocating screw rod and is fixedly connected with the annular scraper, the transmission unit comprises a worm, a worm wheel and a transmission shaft, the transmission shaft is rotatably installed on one side of the air chamber, the worm is fixedly installed on the rotating shaft, the worm wheel is fixedly installed on the top end of the transmission shaft, and the worm is in meshing transmission connection with the worm wheel; the bottom fixed mounting of transmission shaft has the driving gear, the top fixed mounting of reciprocal lead screw has driven gear, just the driving gear with meshing transmission is connected between the driven gear, the bottom of cooling dust removal case is connected installs the funnel that catchments, the bottom of the funnel that catchments is connected with the drain pipe, just catchment the funnel with the sealing plug has been clamped between the drain pipe, the top surface fixed mounting of sealing plug has the connecting rod, the top fixed mounting of connecting rod has the floater, connecting rod surface sliding installs the spacing ring, the outer lane fixed mounting of spacing ring has the support, the one end fixed connection of support in on the inner wall of the funnel that catchments, the lower extreme movable sleeve of connecting rod is equipped with and is located spring between and the spacing ring.
2. The apparatus of claim 1, wherein in the second step, the temperature of the melt reaction is 265-280 ℃, and the blend is extruded, cut and cooled by an air-cooled die surface hot cutting apparatus.
3. The apparatus of claim 2, wherein the creep-resistant agent comprises barium sulfate micropowder, calcium carbonate micropowder, and graphite micropowder.
4. The apparatus as claimed in claim 3, wherein the mass ratio of the barium sulfate micro powder, the calcium carbonate micro powder and the graphite micro powder is (1-2): 3-6.
5. The apparatus of claim 4, wherein the cross-linking agent comprises any one of benzoyl peroxide, dicumyl peroxide.
6. The apparatus of claim 5, wherein the nucleating agent comprises dibutyl sebacate.
7. The apparatus of claim 6, wherein the antioxidant comprises antioxidant 1010.
8. The apparatus of claim 7, wherein the compatibilizer comprises maleic anhydride grafted SBS.
9. The apparatus of claim 8, wherein the mass ratio of the polystyrene resin, the linear low density polyethylene resin, the thermoplastic elastomer SBS, the polyarylethernitrile resin, the creep resistant agent, the crosslinking agent, the nucleating agent, the antioxidant and the compatibilizer is 100.
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| CN107738378A (en) * | 2017-11-21 | 2018-02-27 | 泉州市铭益塑料制品有限公司 | A kind of waste plastics recovery handling process |
| CN113829538A (en) * | 2020-06-08 | 2021-12-24 | 扬州实嘉电缆材料有限公司 | Air-cooled die surface hot cutting machine for cable material production |
| CN215750157U (en) * | 2021-06-07 | 2022-02-08 | 江苏康峰高分子材料有限公司 | Convenient to use's production of medical macromolecular material is with forced air cooling die face earnestly machine |
| CN216760450U (en) * | 2021-11-11 | 2022-06-17 | 扬州实嘉电缆材料有限公司 | Prevent cable material production of clay with forced air cooling die face earnestly machine |
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