CN113997590A - Novel manufacturing process for manufacturing hydrocyclone by using novel thermoplastic material - Google Patents
Novel manufacturing process for manufacturing hydrocyclone by using novel thermoplastic material Download PDFInfo
- Publication number
- CN113997590A CN113997590A CN202111322713.6A CN202111322713A CN113997590A CN 113997590 A CN113997590 A CN 113997590A CN 202111322713 A CN202111322713 A CN 202111322713A CN 113997590 A CN113997590 A CN 113997590A
- Authority
- CN
- China
- Prior art keywords
- novel
- checking
- mold
- manufacturing
- hydrocyclone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 63
- 239000012815 thermoplastic material Substances 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000000465 moulding Methods 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 238000001746 injection moulding Methods 0.000 claims abstract description 21
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 11
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 10
- 239000008187 granular material Substances 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 37
- 238000001816 cooling Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 238000009966 trimming Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000009472 formulation Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 23
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 22
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 15
- 125000005442 diisocyanate group Chemical group 0.000 description 6
- 150000002009 diols Chemical class 0.000 description 6
- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- -1 small-molecule diol Chemical class 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- QEQYAQFYVFRGQD-YFKPBYRVSA-N (2s)-2-amino-5-[[methyl(nitroso)carbamoyl]amino]pentanoic acid Chemical compound O=NN(C)C(=O)NCCC[C@H](N)C(O)=O QEQYAQFYVFRGQD-YFKPBYRVSA-N 0.000 description 1
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of hydrocyclones, and discloses a novel manufacturing process for manufacturing a hydrocyclone by using a novel thermoplastic material, which comprises the following steps of S1, developing a special automatic demoulding mould; s2, preparing a thermoplastic raw material by using the new formula; s3, installing the die on automatic molding injection molding equipment, debugging the stroke clearance of the open-close die, and checking a hydraulic and ejection device; s4, checking and checking whether the heated and dried granules meet the use requirements; s5, feeding the materials into a processing equipment bin; s6, starting the automatic molding injection molding equipment; s7, starting an automatic production mode; and S8, detecting assembly. The invention changes the molding process of the product, improves the production efficiency, can be recycled, and reduces the pollution and harm to the environment after later-stage replacement.
Description
Technical Field
The invention relates to the technical field of hydrocyclones, in particular to a novel manufacturing process for manufacturing a hydrocyclone by using a novel thermoplastic material.
Background
The raw materials used by the prior art are thermosetting materials, thermoplastic materials are adopted in the new technology, the materials used by the prior art cannot be recycled, and cause pollution to the environment, the manufacturing process is complicated, the mold is opened and closed for assembly, the injection is finished manually, the quality is poor, the efficiency is low, the efficiency of the hydrocyclone in the domestic and foreign existing production processes is low, the appearance is poor, the rejection rate is high, the production efficiency of the prior art is low, the internal quality is poor, the appearance is poor and not attractive, the rejection rate generated in the production is high, the failure rate is high during the use, and the novel manufacturing process for manufacturing the hydrocyclone by using the thermoplastic materials is further provided.
Disclosure of Invention
The invention provides a novel manufacturing process for manufacturing a hydrocyclone by using a novel thermoplastic material, which solves the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel manufacturing process for manufacturing a hydrocyclone by using a novel thermoplastic material comprises the following steps:
s1, developing a special automatic demolding mold, wherein the mold is provided with a cooling, cooling and hydraulic setting device;
s2, preparing a thermoplastic raw material by using the new formula, performing an experiment on the new material, finally extruding and cutting the new material into injection molding particles, processing the injection molding particles into test pieces, performing multiple test and inspection on the test pieces according to experimental project standards to ensure that the used raw material reaches the normal use standard, and then heating, drying and dehydrating the test pieces qualified in the test and inspection;
s3, installing the mold on automatic molding injection molding equipment, debugging the stroke clearance of mold opening and closing, checking a hydraulic and ejection device, enabling the manufactured product to be normally and automatically molded and automatically demolded, checking a cooling system to keep the water temperature at a proper temperature, meeting the requirement of timely cooling and demolding of the mold, checking pipelines and connecting pipelines of the mold and the cooling device system to enable the water flow circulation to normally timely cool the mold and accelerate the molding time;
s4, checking and checking whether the heated and dried granules meet the use requirements;
s5, feeding the materials into a bin of the processing equipment, and checking a discharge port of the bin to keep the materials to be discharged and normally wait for production;
s6, starting the automatic molding injection molding equipment, debugging the mold again, and debugging each program to the optimal working state;
s7, starting an automatic production mode, and taking charge of production operators to observe various standards of equipment and formed products, so as to ensure normal operation of the equipment and ensure that the products are qualified and have no defects;
s8, assembly detection, trimming the produced product assembly to remove redundant material edges, checking and trimming;
and S9, assembling the finished and inspected components into a whole set of finished products by using fasteners, and inspecting after the assembly is finished so that each set of finished products can reach qualified products.
Preferably, the experiment in S2 includes experimental analysis, scientific formulation and synthesis reaction.
Preferably, the test piece in the S2 is placed in a drying bin for heating, drying and dehydrating.
Preferably, the test in S2 includes testing for tensile, wear, elongation, and spring back, among others.
Preferably, the suitable temperature in S3 is about 5 ℃.
Preferably, the use requirement in S4 is to ensure that a moisture value within which forming is possible is achieved.
Preferably, the detection tool in S4 is a moisture test instrument.
Preferably, the adjusting in S6 includes adjusting the mold opening and closing and molding time, the injection pressure and the injection temperature.
Preferably, the detection in S9 includes appearance and water pressure inspection.
The invention has the beneficial effects that: the raw materials used in the prior art are thermosetting materials, the new technology adopts thermoplastic materials, the materials used in the prior art can not be recycled to cause pollution to the environment, the manufacturing process is complicated, the opening, closing and assembling and material injection of the die are finished manually, the quality is poor, the efficiency is low, the materials used in the new technology can be recycled to reduce the environmental pollution, the die is designed to be automatically opened and closed without manual assembly, the efficiency of the hydraulic cyclone in the prior production technology at home and abroad is low, the appearance is poor, the rejection rate is high, the production efficiency of the prior technology and the new technology is about 20 times different, the product service cycle is about two times higher than that of the products of the common technology, the production efficiency of the prior technology is low, the product has the advantages of poor internal quality, poor appearance, high rejection rate in production, high failure rate in use, no precedent of the selected material at home and abroad, no precedent of the forming process and no precedent of the mould structure. The new process is characterized in that: compared with the traditional process, the production efficiency is improved by more than ten times, various performance indexes of the used raw materials are higher than those of the existing raw materials, the product is attractive and durable, the service life can be improved by more than two times, the direct contact of operators on the raw materials is avoided during production, the produced leftover materials and the used scrapped products can be recycled.
The invention changes the molding process of the product, improves the production efficiency, can be recycled, and reduces the pollution and harm to the environment after later-stage replacement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
A novel manufacturing process for manufacturing a hydrocyclone by using a novel thermoplastic material comprises the following steps:
s1, developing a special automatic demolding mold, wherein the mold is provided with a cooling, cooling and hydraulic setting device;
s2, preparing a thermoplastic raw material by using the new formula, performing an experiment on the new material, finally extruding and cutting the new material into injection molding particles, processing the injection molding particles into test pieces, performing multiple test and inspection on the test pieces according to experimental project standards to ensure that the used raw material reaches the normal use standard, and then heating, drying and dehydrating the test pieces qualified in the test and inspection;
s3, installing the mold on automatic molding injection molding equipment, debugging the stroke clearance of mold opening and closing, checking a hydraulic and ejection device, enabling the manufactured product to be normally and automatically molded and automatically demolded, checking a cooling system to keep the water temperature at a proper temperature, meeting the requirement of timely cooling and demolding of the mold, checking pipelines and connecting pipelines of the mold and the cooling device system to enable the water flow circulation to normally timely cool the mold and accelerate the molding time;
s4, checking and checking whether the heated and dried granules meet the use requirements;
s5, feeding the materials into a bin of the processing equipment, and checking a discharge port of the bin to keep the materials to be discharged and normally wait for production;
s6, starting the automatic molding injection molding equipment, debugging the mold again, and debugging each program to the optimal working state;
s7, starting an automatic production mode, and taking charge of production operators to observe various standards of equipment and formed products, so as to ensure normal operation of the equipment and ensure that the products are qualified and have no defects;
s8, assembly detection, trimming the produced product assembly to remove redundant material edges, checking and trimming;
and S9, assembling the finished and inspected components into a whole set of finished products by using fasteners, and inspecting after the assembly is finished so that each set of finished products can reach qualified products.
In this embodiment, the experiment in S2 includes experimental analysis, scientific formulation, and synthetic reaction.
And S2, placing the test piece in a drying bin for heating, drying and dehydrating.
The test in S2 includes testing for tensile, abrasion, elongation, and spring back, among others.
The appropriate temperature in S3 is around 5 ℃.
The use in S4 is required to ensure that the moisture value can be formed.
The detection means in S4 is a moisture test instrument.
The adjustment in S6 includes adjusting the mold opening and closing and molding time, the material injection pressure and the material injection temperature.
The test in S9 includes appearance and water pressure test.
The working principle is as follows: s1, developing a special automatic demolding mold which is difficult to manufacture and high in technological content, and designing a cooling, cooling and hydraulic setting device; s2, preparing a thermoplastic raw material by using a new formula, carrying out experimental analysis, scientific proportioning and synthetic reaction on the new material, finally extruding and cutting the new material into injection molding particles, processing the injection molding particles into test pieces, carrying out test and inspection on the test pieces according to the experimental project standards to detect various performance indexes such as stretching, abrasion, elongation, resilience and the like, ensuring that the used raw material reaches the normal use standard, and then putting the test pieces qualified by the test and inspection into a drying bin for heating, drying and dehydrating; s3, installing the mold on automatic molding injection molding equipment, debugging the stroke clearance of mold opening and closing, checking a hydraulic and ejection device, enabling the manufactured product to be normally and automatically molded and automatically demolded, checking a cooling system to keep the water temperature at about 5 ℃, meeting the requirement of timely cooling and demolding of the mold, checking pipelines and connecting pipelines of the mold and the cooling system to enable the water circulation of the mold to normally timely cool the mold and accelerate the molding time; s4, checking and checking whether the heated and dried granules meet the use requirements by using a moisture tester, and ensuring that the granules reach the moisture value within which the granules can be formed; s5, feeding the materials into a bin of the processing equipment, and checking a discharge port of the bin to keep the materials to be discharged and normally wait for production; s6, starting the automatic molding injection molding equipment, debugging the mold opening and closing and molding time, the material injection pressure and the material injection temperature again, and debugging each program to the optimal working state; s7, starting an automatic production mode, and taking charge of production operators to observe various standards of equipment and formed products, so as to ensure normal operation of the equipment and ensure that the products are qualified and have no defects; s8, assembly detection, trimming the produced product assembly to remove redundant material edges, checking and trimming; and S9, assembling the finished and inspected components into a whole set of finished products by using fasteners, and performing appearance and hydraulic pressure inspection after the assembly is finished so that each set of finished products can reach qualified products. The raw materials used in the prior art are thermosetting materials, the new technology adopts thermoplastic materials, the materials used in the prior art can not be recycled to cause pollution to the environment, the manufacturing process is complicated, the opening, closing and assembling and material injection of the die are finished manually, the quality is poor, the efficiency is low, the materials used in the new technology can be recycled to reduce the environmental pollution, the die is designed to be automatically opened and closed without manual assembly, the efficiency of the hydraulic cyclone in the prior production technology at home and abroad is low, the appearance is poor, the rejection rate is high, the production efficiency of the prior technology and the new technology is about 20 times different, the product service cycle is about two times higher than that of the products of the common technology, the production efficiency of the prior technology is low, the product has the advantages of poor internal quality, poor appearance, high rejection rate in production, high failure rate in use, no precedent of the selected material at home and abroad, no precedent of the forming process and no precedent of the mould structure. The new process is characterized in that: compared with the traditional process, the production efficiency is improved by more than ten times, various performance indexes of the used raw materials are higher than those of the existing raw materials, the product is attractive and durable, the service life can be improved by more than two times, the direct contact of operators on the raw materials is avoided during production, the produced leftover materials and the used scrapped products can be recycled. The invention changes the molding process of the product, improves the production efficiency, can be recycled, and reduces the pollution and harm to the environment after later-stage replacement;
TDI and MDI are main raw materials which can be selected for manufacturing the cyclone, and the TDI and the MDI can be replaced by each other to a certain extent, but the TDI and the MDI have great difference in structure, performance and subdivision application. 1. TDI is called toluene diisocyanate completely, one benzene ring is provided with two isocyanic acid radicals, and the content of the isocyanic acid radicals is 48.3 percent; MDI is called diphenylmethane diisocyanate and has two benzene rings, and the content of isocyanic acid radical is 33.6%; 2. MDI is less toxic, and TDI is extremely toxic. The MDI has lower vapor pressure, is not easy to volatilize, has no pungent smell, has less toxicity to human bodies and has no special requirement on transportation; TDI has high vapor pressure, is easy to volatilize, has strong pungent smell, is a highly toxic dangerous product, and has strict requirements for transportation. 3. The curing speed of the MDI system is high. Compared with TDI, the MDI system has the advantages of high curing speed, short product molding period and excellent performance, for example, the TDI based product is formed by a general 12-24h curing process to achieve the best performance, and the MDI system can achieve 95% curing degree only by 1 h. 4. MDI is easy to develop diversified products, has higher relative density, and can produce products with wide hardness range by changing the component proportion. 5. By optimizing the product material and process, the cyclone produced by the thermoplastic process has the following advantages: compared with TDI, MDI is an environment-friendly product, accords with the national environment-friendly development direction, and has no harm to the environment and human bodies. Secondly, products and leftover materials made of TDI are not recyclable and difficult to decompose due to the structure of the products, so that the environment is polluted. And thirdly, pure BG polyol is selected as another main raw material of the product, and compared with PEPG polyol selected by common cyclones in the current market, the BG polyol has the characteristics of better low temperature resistance, high resilience and high wear resistance, and the quality of the product is well improved. MDI molding time is very fast, 95 percent of curing degree can be achieved only in 1 hour, TDI system products can achieve the best performance only in 12-24 hours of curing process, production efficiency is greatly improved, and a large amount of energy consumption is saved. The above is a distinction between MDI and TDI type cyclones and it can be seen that MDI is more widely used than TDI. MDI has developed rapidly in recent years by virtue of its many advantages.
Thermoplastic polyurethane (PBA/MDI system) and thermoset polyurethane (PEA/TDI) performance comparison:
type (2): polyester type TPU, hardness 88-92A
The method is characterized in that: high mechanical strength, short forming period, good processing stability and low-temperature flexibility
The application comprises the following steps: injection molding and extrusion molding
Injection molding of 2mm thick test piece, aging at 80 deg.C for 16 hr
Type (2): polyester type CPU, hardness 88-92A
The method is characterized in that: good mechanical strength and can be used as large-scale products
The application comprises the following steps: moulding by hand or by equipment
1. Formulation design and calculation
1.1 design parameters
TPU is a material which can be plasticized by heating and can be dissolved by solvent, and has a typical block structure, namely a soft block structure and a hard block structure are contained in macromolecules. Since there is substantially no cross-linked structure, the strength is mainly derived from the covalent bonding force within the molecule and the van der waals force and hydrogen bond between macromolecules. The structure, proportion, capability of forming hydrogen bonds and crystallization performance of the soft segment and the hard segment in the macromolecule determine all the characteristics of the TPU, such as elasticity, strength, elongation, water resistance, wear resistance, high and low temperature performance, and the like. Therefore, the production formulation must be determined to meet the performance requirements of the target product.
When a formula is designed, main raw materials are selected according to the product performance requirement, and if the material strength and wear resistance requirement are high but the water resistance requirement is common, polyester type is selected; if the requirements on elasticity and low-temperature performance are high, PTMEG type should be selected; the requirements on strength, wear resistance and water resistance are high, polycarbonate polyol can be selected, but the cost is high; and so on. After the main raw materials are determined, relevant parameters are determined. In the course of the formulation of TPUs, the R value (NCO/OH) and the hard segment content (Ch) are generally used as parameters.
1.1.1 determination of R value
In the TPU, R is controlled to be 0.95-1.05, mostly 0.98-1.02. When R is less than 1, the TPU is a pure linear structure and is a thermoplastic product; when R is more than 1, besides producing linear TPU, the product has a partially branched or even crosslinked structure and is a semi-thermoplastic product. TPUs of purely linear structure are soluble in the melt and can be processed either in the melt, for example by extrusion, calendering, injection molding, blow molding, or in solution, for example to give coatings, adhesives, pastes, etc. While semi-thermoplastic TPUs are meltable but not fully soluble and can only be melt processed, not solution processed. Therefore, in designing the formulation, an appropriate R value should be selected according to the performance requirements of the product.
In addition, the R value has a direct influence on the molecular weight of the product. According to the reaction equation:
nOCN—A—NCO+(n+1)HO—A/—OH
HO—A/—[—O—CO—NH—A—NH—CO—O—A/—]n—OH
it can be found that: mn ═ nMCO + (n +1) MOH
And R is n/(n +1), so Mn is nMNCO + (n +1) MOH is (MOH + RMNCO)/(1-R) (1)
[ when NCO is excessive, Mn ═ MNCO + R/MOH)/(1-R/], wherein R/═ OH/NCO
In addition, the synthetic reaction mechanism of the TPU is a step-by-step addition polycondensation reaction, and the method conforms to the polycondensation reaction
Mechanism [1 ]. According to the polycondensation reaction mechanism, the following formula can be deduced:
maximum average degree of polymerization mmax (number average) ═ R +1)/(2| R-1 |) (2) of TPU
It can be derived that: when R is 1, mmax ═ infinity
When R is 0.99, mmax is 99.5
When R is 0.98, mmax is 49.5
It can be seen that the R value has a large influence on the molecular weight of the TPU.
1.1.2 hard segment content
The hard segment content refers to the mass percentage of the hard segment in the TPU, and is another important parameter for the formula design of the TPU. The hard segment content directly affects the hydrogen bonding, microphase separation and crystallization properties of TPU and is the main factor determining its morphology. When the hard segment content is low and the mass is small (such as 10%), the hard segment is easy to be dissolved in the soft segment, and the TPU becomes a single soft segment; when the hard segment content is higher but less than about 40%, the hard segments are dispersed over the soft segments, which are the continuous phase; in both cases, the TPU exhibits mainly the advantageous properties of the soft phase, such as good low temperature properties, elongation and elasticity, but poor strength, modulus, abrasion and heat resistance. When the hard segment content is about 40-60%, the microphase separation of the TPU is good, and both the soft segment phase and the hard segment phase can be continuous phases, so that the TPU has good comprehensive performance, and the elongation, elasticity, strength, modulus, wear resistance and low-temperature performance are good. When the hard segment content is more than 60%, the soft segments are dispersed in the hard segments, the hard segments are continuous phases, and the TPU mainly shows the performance of the hard segment phase, has good mechanical strength, higher modulus and wear resistance and better heat resistance, but has poorer low-temperature performance, elongation and elasticity.
1.2 calculation of the recipe
After the macrodiol, the diisocyanate (generally MDI in TPU), the R value and the hard segment content Ch (where the hard segment mass is the sum of the masses of the diisocyanate and the small-molecule diol) used have been determined, the amounts of diisocyanate and small-molecule diol can be determined by calculation.
The masses Wi and Wd of the diisocyanate and the small molecular diol in the formula can be obtained by the following simultaneous equations, wherein Wg, Wi and Wd respectively represent the masses of the large molecular diol, the diisocyanate and the small molecular diol, Mg, Mi and Md respectively represent the molecular weights, and the mass Wg of the large molecular diol in the formula is 100:
Ch＝(Wi+Wd)/(Wi+Wd+Wg)＝(Wi+Wd)/(Wi+Wd+100) (3)
R＝(Wi/Mi)/[(Wd/Md)+(Wg/Mg)]＝(Wi/Mi)/[(Wd/Md)+(100/Mg)] (4)
mg, Mi and Md are respectively the molecular weights of macromolecular diol, diisocyanate and micromolecular diol to be selected, are known numbers, and the unknown numbers are only Wi and Wd, so that equations (3) and (4) are common linear binary equations.
MDI, 1.4-BDO and PBA (Mg 1900-2100) are selected as main raw materials for manufacturing the novel cyclone, the Ch content of the synthesized hard segment is 40-50%, and the R value is controlled between 0.98-1.02.
The basic formula of the TPU used by the prior product is as follows (unit: mass fraction): polyester (PBA, Mn ═ 2000): 55 to 60 percent; 1.4-BDO: 9 to 9.5 percent; MDI: 30 to 35 percent;
the addition proportion of the wear-resistant auxiliary agents (such as high-molecular polytetrafluoroethylene powder and silicon) is as follows: 0.3 to 0.5 percent
Hydrolysis resistance agent: (carbodiimide) addition ratio: 0.08-0.095%
Main antioxidant: (antioxidant 1010) addition ratio: 0.1 to 0.3 percent
Auxiliary antioxidant: (antioxidant 1076, 1024, etc.): 0.01 to 0.03 percent
Lubricant: (E wax, etc.)
The hardness of the material is set to be Shore A90-95, pure BG polyol is selected as a main material of the product, and a certain proportion of wear-resistant auxiliary agents are added on a basic formula, so that the wear resistance and the tearing strength of the product are further enhanced. MDI molding time is very fast, 95% curing degree can be achieved only by 1 hour, TDI system products can achieve the best performance only by 12-24 hours of curing process, production efficiency is greatly improved, a large amount of energy consumption is saved, and the MDI molding method well meets various indexes required by the cyclone.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A novel manufacturing process for manufacturing a hydrocyclone by using a novel thermoplastic material is characterized by comprising the following steps:
s1, developing a special automatic demolding mold, wherein the mold is provided with a cooling, cooling and hydraulic setting device;
s2, preparing a thermoplastic raw material by using the new formula, performing an experiment on the new material, finally extruding and cutting the new material into injection molding particles, processing the injection molding particles into test pieces, performing multiple test and inspection on the test pieces according to experimental project standards to ensure that the used raw material reaches the normal use standard, and then heating, drying and dehydrating the test pieces qualified in the test and inspection;
s3, installing the mold on automatic molding injection molding equipment, debugging the stroke clearance of mold opening and closing, checking a hydraulic and ejection device, enabling the manufactured product to be normally and automatically molded and automatically demolded, checking a cooling system to keep the water temperature at a proper temperature, meeting the requirement of timely cooling and demolding of the mold, checking pipelines and connecting pipelines of the mold and the cooling device system to enable the water flow circulation to normally timely cool the mold and accelerate the molding time;
s4, checking and checking whether the heated and dried granules meet the use requirements;
s5, feeding the materials into a bin of the processing equipment, and checking a discharge port of the bin to keep the materials to be discharged and normally wait for production;
s6, starting the automatic molding injection molding equipment, debugging the mold again, and debugging each program to the optimal working state;
s7, starting an automatic production mode, and taking charge of production operators to observe various standards of equipment and formed products, so as to ensure normal operation of the equipment and ensure that the products are qualified and have no defects;
s8, assembly detection, trimming the produced product assembly to remove redundant material edges, checking and trimming;
and S9, assembling the finished and inspected components into a whole set of finished products by using fasteners, and inspecting after the assembly is finished so that each set of finished products can reach qualified products.
2. The novel process for manufacturing a hydrocyclone from novel thermoplastics according to claim 1, wherein the experiment in S2 includes experimental analysis, scientific formulation and synthesis reaction.
3. The novel process for manufacturing a hydrocyclone from novel thermoplastic materials according to claim 1, wherein the test piece in S2 is placed in a drying bin for heating, drying and dehydrating.
4. The novel process of claim 1 wherein said testing at S2 includes testing for tensile, wear, elongation, and rebound.
5. The novel process for manufacturing a hydrocyclone from novel thermoplastic materials according to claim 1, wherein the suitable temperature in S3 is about 5 ℃.
6. The novel process of claim 1 wherein said step of S4 is performed to ensure that a moisture value within which the hydrocyclone can be formed is achieved.
7. The novel process for manufacturing a hydrocyclone from novel thermoplastic materials according to claim 1, wherein the testing tool in S4 is a moisture tester.
8. The novel process for manufacturing a hydrocyclone from novel thermoplastics according to claim 1, wherein the adjusting in S6 includes adjusting the mold opening and closing and molding time, the injection pressure and the injection temperature.
9. The novel process of claim 1, wherein the testing in S9 includes visual and hydraulic testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322713.6A CN113997590A (en) | 2021-11-09 | 2021-11-09 | Novel manufacturing process for manufacturing hydrocyclone by using novel thermoplastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322713.6A CN113997590A (en) | 2021-11-09 | 2021-11-09 | Novel manufacturing process for manufacturing hydrocyclone by using novel thermoplastic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113997590A true CN113997590A (en) | 2022-02-01 |
Family
ID=79928413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111322713.6A Pending CN113997590A (en) | 2021-11-09 | 2021-11-09 | Novel manufacturing process for manufacturing hydrocyclone by using novel thermoplastic material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113997590A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080300377A1 (en) * | 2007-06-01 | 2008-12-04 | Bayer Materialscience Ag | Process for the preparation of Thermoplastic Polyurethanes based on 1,5-Naphthalene-Diisocyanate |
| CN102744826A (en) * | 2011-04-21 | 2012-10-24 | 广东生之源数码电子有限公司 | Method for producing plastic television shell through gas-assisted technology |
| CN102827345A (en) * | 2012-09-19 | 2012-12-19 | 宁波贝斯特聚氨酯有限公司 | Colored casting material for polyurethane cyclone accessories and preparation method thereof |
| CN102933631A (en) * | 2010-05-07 | 2013-02-13 | 拜耳知识产权有限责任公司 | Polyurethane elastomers, a method for producing same, and use thereof |
| CN108748937A (en) * | 2018-06-28 | 2018-11-06 | 昆山弘正电子科技有限公司 | The injection molding process of router cover |
| CN110871544A (en) * | 2018-08-30 | 2020-03-10 | 苏州万库信息技术有限公司 | Scientific injection molding visualization technology |
| US20210017326A1 (en) * | 2018-03-13 | 2021-01-21 | Basf Se | Thermoplastic polyurethane from recycled raw materials |
-
2021
- 2021-11-09 CN CN202111322713.6A patent/CN113997590A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080300377A1 (en) * | 2007-06-01 | 2008-12-04 | Bayer Materialscience Ag | Process for the preparation of Thermoplastic Polyurethanes based on 1,5-Naphthalene-Diisocyanate |
| CN102933631A (en) * | 2010-05-07 | 2013-02-13 | 拜耳知识产权有限责任公司 | Polyurethane elastomers, a method for producing same, and use thereof |
| CN102744826A (en) * | 2011-04-21 | 2012-10-24 | 广东生之源数码电子有限公司 | Method for producing plastic television shell through gas-assisted technology |
| CN102827345A (en) * | 2012-09-19 | 2012-12-19 | 宁波贝斯特聚氨酯有限公司 | Colored casting material for polyurethane cyclone accessories and preparation method thereof |
| US20210017326A1 (en) * | 2018-03-13 | 2021-01-21 | Basf Se | Thermoplastic polyurethane from recycled raw materials |
| CN108748937A (en) * | 2018-06-28 | 2018-11-06 | 昆山弘正电子科技有限公司 | The injection molding process of router cover |
| CN110871544A (en) * | 2018-08-30 | 2020-03-10 | 苏州万库信息技术有限公司 | Scientific injection molding visualization technology |
Non-Patent Citations (2)
| Title |
|---|
| （英）斯瓦罗夫斯基: "《固液分离 第2版》", 30 April 1990, 化学工业出版社, pages: 193 - 194 * |
| 张欢琴, 白子文: "TPU生产配方的设计与调整", 聚氨酯工业, no. 04, 28 August 2005 (2005-08-28), pages 38 - 41 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3214411A (en) | Polyester urethanes made with diphenylmethane diisocyanate which are processable by thermoplastic techniques | |
| CN113754857A (en) | Polyurethane elastomer for quickly-formed low-temperature-resistant shoe material and preparation method thereof | |
| CN102504504A (en) | High-impact-resistance heat-resistant polylactic acid alloy material and preparation method thereof | |
| CN107987453A (en) | One kind injection grade polypropylene/polyamide micro foaming composite material and preparation method thereof | |
| CN113997590A (en) | Novel manufacturing process for manufacturing hydrocyclone by using novel thermoplastic material | |
| CN112708238A (en) | Matte TPU/ABS alloy material with high low-temperature toughness and easiness in processing and preparation method thereof | |
| CN111234407A (en) | Scratch-resistant PVC door seal rubber sleeve material and preparation method thereof | |
| CN111675854A (en) | Polyurethane toughened polypropylene composite material and preparation and detection method thereof | |
| CN107540935B (en) | Polypropylene reclaimed material composition and preparation method thereof | |
| CN102441947B (en) | A kind of Wear-resistant guide wheel and production method thereof | |
| KR20040098462A (en) | Regeneration method of useless polyurethan resin and its polyurethan resin | |
| CN101792603A (en) | Self-lubricating abrasion-resistant injection-class molybdenum disulfide-filled nylon 66 and preparation technique thereof | |
| CN113278266A (en) | Bio-based degradable synthetic material for plastic weaving production and preparation method thereof | |
| CN112812414A (en) | Fluorosilicone polymer processing aid master batch and preparation method thereof | |
| CN111423630A (en) | Rubber mixture for cleaning self-adhesive mold, preparation method and use method thereof | |
| CN101701104A (en) | Environment-friendly self-lubricating wearable injection-molded nylon 66 and preparing process thereof | |
| CN112662109B (en) | TPV composite material and preparation method thereof | |
| CN111849114B (en) | Modified regenerated composite plastic and preparation method thereof | |
| CN101701103A (en) | High-flowability injection molding grade nylon 66 and manufacture process thereof | |
| CN107722579A (en) | A kind of Novel sliding ring material/PLA thermoplastic elastomer (TPE) and preparation method thereof | |
| EP4098687A1 (en) | Polymer-biofiller composite material from waste of winemaking processes and process for its preparation | |
| Abeykoon et al. | Towards a circular economy-recycling of polymeric waste from end-of-life vehicles, electrical and electronic equipment | |
| CN107868439A (en) | A kind of compound polyurethane material | |
| CN106117822A (en) | Heat resistance conveyor belt rubber cover containing efficient zinc 4060 complex and preparation method thereof | |
| CN102898826A (en) | Self-lubricating abrasion-resistant injection-molding grade polymer molybdenum disulfide filled nylon 66 and preparation technology thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |