CN112014269A - Application of torque rheometer in detection of processing performance of soft PVC (polyvinyl chloride) door seal material - Google Patents
Application of torque rheometer in detection of processing performance of soft PVC (polyvinyl chloride) door seal material Download PDFInfo
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- CN112014269A CN112014269A CN202010854709.3A CN202010854709A CN112014269A CN 112014269 A CN112014269 A CN 112014269A CN 202010854709 A CN202010854709 A CN 202010854709A CN 112014269 A CN112014269 A CN 112014269A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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Abstract
The invention discloses an application of a torque rheometer in detecting the processing performance of a soft PVC (polyvinyl chloride) door seal material, which is based on the torque rheometer, materials with specific weight are added into a mixing cavity with set specific temperature and set rotational speed, a certain pressure is applied in the vertical direction, and a platform in the torque rheometer can change along with time to automatically generate loading peak torque, plasticizing time, plasticizing peak half-height and width, plasticizing temperature, balance torque, balance time and balance temperature of the soft PVC door seal material, so that the plasticizing processing performance of the soft PVC door seal material is detected and evaluated. The invention can solve the series problems that the extrusion molding is difficult to frequently occur in the manufacturing process of the refrigerator door seal, the broken edges appear on the door seal rubber sleeve after the extrusion molding, the flow fluctuation of the material is large in the extrusion process, and the like, fills the blank of the detection and evaluation of the plasticizing processing performance of the soft PVC door seal material, and realizes the visualization, quantification and visualization of the reaction processing performance.
Description
Technical Field
The invention relates to the technical field of a torque rheometer for detecting the processing performance of a soft PVC door seal material, and particularly belongs to application of the torque rheometer in detecting the processing performance of the soft PVC door seal material.
Background
At present, the refrigerator door seals used in the household refrigerator market are mostly made of polyvinyl chloride (PVC) materials and other soft PVC door seal materials which are compounded and prepared, and then the refrigerator door seals are prepared by extrusion molding. The production process of the soft PVC door seal material for the refrigerator comprises the following steps: firstly, mixing the components at a high speed according to a formula in a granulation process, kneading the components by a double-screw extruder, and extruding and granulating by a single-screw extruder; then the door seal manufacturing procedure extrudes the particles by a single screw extruder with a specific section, cools and shapes the particles, and thermally welds the particles to manufacture the refrigerator door seal; finally, the product is delivered to a refrigerator manufacturing factory to be assembled and manufactured into a finished product of the refrigerator.
However, in the manufacturing process of the soft PVC door seal material for the refrigerator, the problems that the extrusion molding is difficult, the hole and the edge rot are generated on the door seal rubber sleeve after the extrusion molding, the flow fluctuation of the material in the extrusion process is large, and the processing performance of the series of soft PVC door seal materials is not up to the standard often occur, and the normal production is seriously affected. The key to the occurrence of the series of problems is that: at present, the detection of PVC door seal material granules is only limited to conventional physical properties such as color difference, hardness and the like, and the detection and evaluation of the plasticizing processing performance of soft PVC door seal materials and granules thereof are completely blank. Therefore, a method for detecting and evaluating the plasticizing processing performance of the soft PVC door seal material and the granular material thereof is urgently needed in the refrigerator PVC door seal industry, so as to ensure that the soft PVC door seal material and the granular material thereof used in each batch have stable and consistent performance. Therefore, the application of the torque rheometer in detecting the processability of the soft PVC door seal material is developed to solve the problems.
Disclosure of Invention
The invention aims to provide application of a torque rheometer in detecting the processing performance of a soft PVC door seal material, and can solve the problems in the background art. Is suitable for being popularized and used in the manufacture of refrigerator door seal products.
The technical scheme adopted by the invention is as follows:
the application of the torque rheometer in detecting the processability of the soft PVC door seal material.
Preferably, the application is the application of a torque rheometer in detecting and evaluating the plasticizing processing performance of the soft PVC door seal material.
Preferably, when the torque rheometer is used for detecting and evaluating the processing performance of the soft PVC door seal material, the torque rheometer comprises a main driving system, a closed mixing platform, a main measurement and control system, a multi-section temperature measurement and control system, a data acquisition system, computer experiment software, a data processing system and a display screen assembly;
setting specific temperature and rotation speed on a torque rheometer, and keeping the temperature after the temperature is raised to the set temperature;
accurately weighing a soft PVC door seal material sample with a specific weight and a formula meeting the requirement;
starting a torque rheometer, clearing original data in a torque rheometer system when the rotating speed rises to a set value, and pouring the precisely weighed soft PVC door seal material sample with a specific weight and a formula meeting the requirement into an internal mixing platform of the torque rheometer within 5 s;
immediately releasing a press hammer of the torque rheometer, and naturally falling down and pressing the press hammer on the soft PVC door seal material sample material;
or locking a pressing hammer of the torque rheometer to compact the soft PVC door seal material sample material;
generating a data curve displayed on a display screen assembly of the torque rheometer after a period of time;
establishing a corresponding relation between the material torque (Tq) of the soft PVC door seal material sample, the material temperature (Tm) of the soft PVC door seal material sample and the plasticizing processing time of the soft PVC door seal material sample on a computer experiment software interface of a torque rheometer;
based on the plasticizing property of the soft PVC door seal material sample, the corresponding relation between the material torque (Tq) of the soft PVC door seal material sample and the material temperature (Tq) of the soft PVC door seal material sample in different batches and the plasticizing processing time of the soft PVC door seal material sample is combined, and the method can be applied to detection and evaluation of the consistency of the plasticizing processing performance of the soft PVC door seal material sample materials in different batches.
Preferably, the torque rheometer is applied to detection and evaluation of the processing performance of the soft PVC door seal material, and the Shore hardness of the applied soft PVC door seal material is within the range of 50A-90A.
Preferably, the temperature setting range of each zone of the multi-zone temperature measurement and control system of the torque rheometer is 110-180 ℃, the rotating speed setting range of a main driving system of the torque rheometer is 20-50 rpm, and the heat preservation time is 30min after the temperature is raised to the set temperature.
Preferably, the weight of the hammer is in the range of 3kg to 10 kg.
Preferably, after the duration of the period of time, a data curve is generated on a display screen assembly of the torque rheometer, and the displayed data curve can be intercepted within 10-60 min according to the actual plasticizing balance time of the soft PVC door seal material sample;
the obtained data curve can reflect the plasticizing processing performance of the soft PVC door seal material, and can be used as a soft PVC door seal material sample with different formulas to distinguish the difference of the plasticizing processing performance; and the method can also judge whether the plasticizing processing performance of the soft PVC door seal material sample materials in different production time is consistent or not aiming at the soft PVC door seal material sample with the same formula.
Preferably, the interception can directly reflect the following data curve: the soft PVC door seal material sample comprises material loading peak time, plasticizing peak time, full width at half maximum of a plasticizing peak, plasticizing temperature, balance torque, balance temperature, torque corresponding to the material loading peak time, plasticizing peak torque corresponding to the plasticizing peak time, plasticizing stable processing time and balance time required for reaching the balance torque or the balance temperature.
Compared with the prior art, the invention has the following beneficial effects:
the application of the plasticizing processing performance of the soft PVC door seal material is detected and evaluated through a torque rheometer, the method for visualizing the plasticizing processing performance data of the soft PVC door seal material and quantitatively detecting and evaluating the soft PVC door seal material is provided, and the blank of the current plasticizing processing performance detection and evaluation of the soft PVC door seal material is filled; on one hand, for a new formula, whether the formula meets the requirements of production on the rheological property of the formula can be judged by the method; on the other hand, for different batches of door seal PVC material in the production process, a plurality of groups of samples can be selected for detection and evaluation in a random sampling inspection mode, and whether the production plasticizing processing characteristics of different batches of door seal PVC material are consistent or not can be reflected through data obtained by detecting by a contrast torque rheometer; ensure that the soft door seal PVC material product performance consistency is good.
Meanwhile, the invention can solve the series problems that the extrusion molding is difficult to frequently occur in the manufacturing process of the refrigerator door seal, the hole-broken edge appears on the door seal rubber sleeve after the extrusion molding, the flow fluctuation of the material is large in the extrusion process, and the like, fills the blank of the plasticization processing performance detection and evaluation of the soft PVC door seal material, and realizes the data visualization, quantification and visualization of the reaction processing performance.
Drawings
FIG. 1 is a graph of data displayed by a plasticizing process performance test of a torque rheometer display screen assembly for a first sample, a second sample and a third sample which are precisely weighed by soft PVC door seal material powder materials obtained according to a first mixture ratio in an embodiment;
FIG. 2 shows two data curves for the plasticizing process performance detection of the torque rheometer display screen assembly of two groups of normal formulation materials obtained by accurately weighing powder materials of the soft PVC door seal material according to the first formulation in the example, and new formulation materials obtained by accurately weighing granules of the soft PVC door seal material according to the second formulation in the example;
fig. 3 is a graph showing data obtained by measuring the plasticization processing performance of the soft PVC door seal material particles obtained according to the third embodiment in a continuous batch production of 10 tons, wherein 360g of a sample prepared according to the third embodiment is weighed in the first 2 tons, 360g of a sample prepared according to the third embodiment is weighed in the second 2 tons, 360g of a sample prepared according to the third embodiment is weighed in the third 2 tons, 360g of a sample prepared according to the third embodiment is weighed in the fourth 2 tons, 360g of a sample prepared according to the third embodiment is weighed in the fifth 2 tons, and five groups of samples are measured on a torque rheometer display screen assembly;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described below with specific embodiments, and the technical solutions in the embodiments of the present invention are clearly and completely described. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to examples and specific embodiments.
The application of the torque rheometer in detecting the processability of the soft PVC door seal material.
Preferably, the application is the application of a torque rheometer in detecting and evaluating the plasticizing processing performance of the soft PVC door seal material.
Preferably, when the torque rheometer is used for detecting and evaluating the processing performance of the soft PVC door seal material, the torque rheometer comprises a main driving system, a closed mixing platform, a main measurement and control system, a multi-section temperature measurement and control system, a data acquisition system, computer experiment software, a data processing system and a display screen assembly;
setting specific temperature and rotation speed on a torque rheometer, and keeping the temperature after the temperature is raised to the set temperature;
accurately weighing a soft PVC door seal material sample with a specific weight and a formula meeting the requirement;
starting a torque rheometer, clearing original data in a torque rheometer system when the rotating speed rises to a set value, and pouring the precisely weighed soft PVC door seal material sample with a specific weight and a formula meeting the requirement into an internal mixing platform of the torque rheometer within 5 s;
immediately releasing a press hammer of the torque rheometer, and naturally falling down and pressing the press hammer on the soft PVC door seal material sample material;
or locking a pressing hammer of the torque rheometer to compact the soft PVC door seal material sample material;
generating a data curve displayed on a display screen assembly of the torque rheometer after a period of time;
establishing a corresponding relation between the material torque (Tq) of the soft PVC door seal material sample, the material temperature (Tm) of the soft PVC door seal material sample and the plasticizing processing time of the soft PVC door seal material sample on a computer experiment software interface of a torque rheometer;
based on the plasticizing property of the soft PVC door seal material sample, the corresponding relation between the material torque (Tq) of the soft PVC door seal material sample and the material temperature (Tq) of the soft PVC door seal material sample in different batches and the plasticizing processing time of the soft PVC door seal material sample is combined, and the method can be applied to detection and evaluation of the consistency of the plasticizing processing performance of the soft PVC door seal material sample materials in different batches.
Preferably, the torque rheometer is applied to detection and evaluation of the processing performance of the soft PVC door seal material, and the Shore hardness of the applied soft PVC door seal material is within the range of 50A-90A.
Preferably, the temperature setting range of each zone of the multi-zone temperature measurement and control system of the torque rheometer is 110-180 ℃, the rotating speed setting range of a main driving system of the torque rheometer is 20-50 rpm, and the heat preservation time is 30min after the temperature is raised to the set temperature.
Preferably, the weight of the hammer is in the range of 3kg to 10 kg.
Preferably, after the duration of the period of time, a data curve is generated on a display screen assembly of the torque rheometer, and the displayed data curve can be intercepted within 10-60 min according to the actual plasticizing balance time of the soft PVC door seal material sample;
the obtained data curve can reflect the plasticizing processing performance of the soft PVC door seal material, and can be used as a soft PVC door seal material sample with different formulas to distinguish the difference of the plasticizing processing performance; and the method can also judge whether the plasticizing processing performance of the soft PVC door seal material sample materials in different production time is consistent or not aiming at the soft PVC door seal material sample with the same formula.
Preferably, the interception can directly reflect the following data curve: the soft PVC door seal material sample comprises material loading peak time, plasticizing peak time, full width at half maximum of a plasticizing peak, plasticizing temperature, balance torque, balance temperature, torque corresponding to the material loading peak time, plasticizing peak torque corresponding to the plasticizing peak time, plasticizing stable processing time and balance time required for reaching the balance torque or the balance temperature.
The torque rheometer manufacturer used in the following examples is Harbin Hapu electric technology, Inc. It should be noted that the use of a torque rheometer with similar functionality is equally applicable to the present invention.
The first embodiment is as follows:
the soft PVC door seal material for the refrigerator door seal rubber sleeve is prepared by accurately weighing the following materials in parts by weight:
100 parts of PVC resin, 50-85 parts of plasticizer, 40-70 parts of filler, 1-5 parts of stabilizer, 0.2-1 part of lubricant, 0.2-2 parts of antibacterial and mildewproof agent and 0.2-1 part of dispersion compatilizer, wherein the weight unit is gram,
the materials are compounded and then are mixed at high speed to prepare the soft PVC door sealing material powder; accurately weighing a powder material sample of the soft PVC door seal material with a specific weight;
starting a torque rheometer, clearing original data in a torque rheometer system when the rotating speed rises to a set value, accurately weighing a soft PVC door seal material powder material sample with a specific weight and a formula meeting the requirement within 5s, and pouring the soft PVC door seal material powder material sample into an internal mixing platform of the torque rheometer;
immediately releasing a press hammer of the torque rheometer, and naturally falling down and pressing the press hammer on the soft PVC door seal material sample powder material;
or locking a pressing hammer of a torque rheometer to compact the powder material of the soft PVC door seal material sample;
generating a data curve displayed on a display screen assembly of the torque rheometer after a period of time;
when the torque rheometer is started, the mixing platform is connected, and parameters are set:
and when the temperature rises to a set value, preserving the heat for 30 min. Then weighing 360g of samples to be measured (marked as a first sample, a second sample and a third sample) in three times, as shown in figure 1 (remark: 1 represents the first sample, 2 represents the second sample, and 3 represents the third sample);
starting the host, and clearing original data after the rotating speed is increased to a set value and is kept stable; pouring the weighed sample to be measured in 5s, immediately releasing a 5kg pressing hammer, pressing down and locking the pressing hammer to compact the material; and waiting for the acquisition system to automatically generate data.
As shown in FIG. 1, the mixing curves of PVC powder produced by the formulation at different times are compared; establishing a corresponding relation between the powder material torque (Tq) of the soft PVC door seal material sample and the powder material temperature (Tm) of the soft PVC door seal material sample and the plasticizing processing time of the soft PVC door seal material powder material sample on a computer experiment software interface of a torque rheometer; the torque rheometer test platform automatically gives the relevant data of the obtained curve:
table one:
according to data given by a torque rheometer, the powder material states of soft PVC door seal material materials with the same formula and different periods can be detected and evaluated; according to the data curve displayed on the display screen component of the torque rheometer, the fluctuation of related matched processing performance parameters in the production and processing process can be visually traced, the small overall fluctuation of the soft PVC door seal material powder material plasticizing processing performance can be determined, the produced refrigerator door seal rubber sleeve product performance consistency is good, and the requirements of the product on the overall processing performance in continuous batch production are met.
Example two:
the soft PVC door seal material for the refrigerator door seal rubber sleeve is prepared by accurately weighing the following materials in parts by weight:
after the materials are compounded, the soft PVC door seal material granules are prepared only by double-screw and single-screw extrusion granulation; accurately weighing a soft PVC door seal material particle sample with a specific weight;
starting a torque rheometer, clearing original data in a torque rheometer system when the rotating speed rises to a set value, accurately weighing the soft PVC door seal material granular material sample with a specific weight and a formula meeting the requirement within 5s, and pouring the soft PVC door seal material granular material sample into an internal mixing platform of the torque rheometer;
immediately releasing a press hammer of the torque rheometer, and naturally falling down and pressing the press hammer on the soft PVC door seal material sample granules;
or locking a pressing hammer of a torque rheometer to compact the soft PVC door seal material sample granules;
generating a data curve displayed on a display screen assembly of the torque rheometer after a period of time;
when the torque rheometer is started, the mixing platform is connected, and parameters are set:
and when the temperature rises to a set value, preserving the heat for 30 min. Then, the sample to be tested is weighed twice, and 360g of the sample to be tested is weighed for the first time according to the proportion in the first embodiment; weighing 360g of the sample to be tested according to the proportion in the second embodiment; (the calibration is that 360 grams of samples to be measured which are proportioned according to the proportion in the first embodiment are weighed for the first time to be used as the normal formula material, and 360 grams of samples to be measured which are proportioned according to the proportion in the second embodiment are weighed for the second time to be used as the new formula material) as shown in figure 2 (remarks: 4 represents the normal formula material, and 5 represents the new formula material);
starting a host; after the rotating speed is increased to a set value and is kept stable, original data are cleared; pouring the weighed sample to be detected in 5s, immediately releasing a 5kg pressing hammer, and naturally falling and compacting the granular material; and waiting for the acquisition system to automatically generate data.
As shown in FIG. 2, the mixing curves of PVC granules produced at different times in the formula are compared; establishing a corresponding relation between the torque (Tq) of the soft PVC door seal material sample particles, the temperature (Tm) of the soft PVC door seal material sample particles and the plasticizing processing time of the soft PVC door seal material sample particles on a computer experiment software interface of a torque rheometer; the torque rheometer test platform automatically gives the relevant data of the obtained curve:
for example (shown in fig. 2), the mixing curve of the new formula is compared with the mixing curve of the sample to be tested which is mixed according to the proportion in the first embodiment and is the normal formula material in the previous period;
table two:
according to data given by a torque rheometer, the states of granular materials of soft PVC door seal materials with different formulas and different periods can be detected and evaluated; according to the method, a data curve can be displayed on a display screen assembly of the torque rheometer, the fluctuation of related matched processing performance parameters can be visually traced in the production and processing process, the small change of the whole fluctuation range of the plasticizing processing performance of different batches of soft PVC door seal material granules can be determined, the good consistency of the product performance of the produced refrigerator door seal rubber sleeve is ensured, and the requirement of the continuous batch production whole processing performance of the product is met.
Example three:
10 tons of soft PVC door sealing material granules continuously produced in batches by the company factory are selected, and one sample (each weight is 360 grams) is extracted every 2 tons for a total of 5 samples.
The soft PVC door seal material for the refrigerator door seal rubber sleeve is prepared by accurately weighing the following materials in parts by weight:
after the materials are compounded, the soft PVC door seal material granules are prepared only by double-screw and single-screw extrusion granulation; accurately weighing a soft PVC door seal material particle sample with a specific weight;
starting a torque rheometer, clearing original data in a torque rheometer system when the rotating speed rises to a set value, accurately weighing the soft PVC door seal material granular material sample with a specific weight and a formula meeting the requirement within 5s, and pouring the soft PVC door seal material granular material sample into an internal mixing platform of the torque rheometer;
immediately releasing a press hammer of the torque rheometer, and naturally falling down and pressing the press hammer on the soft PVC door seal material sample granules;
or locking a pressing hammer of a torque rheometer to compact the soft PVC door seal material sample granules;
generating a data curve displayed on a display screen assembly of the torque rheometer after a period of time;
when the torque rheometer is started, the mixing platform is connected, and parameters are set:
and when the temperature rises to a set value, preserving the heat for 30 min. The reaction is then divided into five times: weighing 360g of a sample in the proportion in the third embodiment in the first 2 tons; weighing 360g of a sample in the second 2 tons according to the proportion in the third example; weighing 360g of a sample in the third 2 tons according to the proportion in the third example; weighing 360g of a sample in the fourth 2 tons according to the proportion in the third embodiment; weighing 360g of a sample which is weighed according to the proportion in the third embodiment in the fifth 2 tons; (nominally: 360g of a sample taken according to the ratio of example three is weighed in the first 2 tons to give sample six; 360g of a sample taken according to the ratio of example three is weighed in the second 2 tons to give sample seven; 360g of a sample taken according to the ratio of example three is weighed in the third 2 tons to give sample eight; 360g of a sample taken according to the ratio of example three is weighed in the fourth 2 tons to give sample nine; and 360g of a sample taken according to the ratio of example three is weighed in the fifth 2 tons to give sample ten), as shown in (FIG. 3) (note: 6 denotes sample six; 7 denotes sample seven; 8 denotes sample eight; 9 denotes sample nine; 10 denotes sample ten);
starting a host; after the rotating speed is increased to a set value and is kept stable, original data are cleared; pouring the weighed sample to be detected in 5s, immediately releasing a 5kg pressing hammer, and naturally falling and compacting the granular material; and waiting for the acquisition system to automatically generate data.
As shown in FIG. 3, the mixing curves of PVC granules produced at different times in the formulation are compared; establishing a corresponding relation between the particle material torque (Tq) of the soft PVC door seal material sample and the particle material temperature (Tm) of the soft PVC door seal material sample and the plasticizing processing time of the soft PVC door seal material sample on a computer experiment software interface of a torque rheometer; the torque rheometer test platform automatically gives the relevant data of the obtained curve:
table three:
according to data given by a torque rheometer, the states of granular materials of soft PVC door seal materials with different formulas and different periods can be detected and evaluated; according to the method, a data curve can be displayed on a display screen assembly of the torque rheometer, the fluctuation of related matched processing performance parameters can be visually traced in the production and processing process, the small change of the whole fluctuation range of the plasticizing processing performance of different batches of soft PVC door seal material granules can be determined, the good consistency of the product performance of the produced refrigerator door seal rubber sleeve is ensured, and the requirement of the continuous batch production whole processing performance of the product is met. By combining the data in the table III and the data in the table 2, the consistency of the granules of the soft PVC door seal material continuously produced in the batch is judged to be good, and the quality stability of the refrigerator door seal rubber sleeve product produced by the materials is judged.
Wherein: to further illustrate, in the first to third embodiments:
the PVC resin is produced by Taiwan plastic industry Co.Ltd and has the model of S-60/S-65/S-70; the plasticizer is an ester formed by polymerizing adipic acid and polyester polyol, and is compounded with one or more of trioctyl trimellitate, dioctyl terephthalate, dioctyl sebacate, cyclohexane 1, 2-diisononyl phthalate, dioctyl adipate and epoxidized soybean oil, adipic acid in the plasticizer is produced by Zhengzhou Xintian and chemical products GmbH, the polyester polyol in the plasticizer is produced by Nanjing bannuo biological science and technology GmbH, the dioctyl terephthalate in the plasticizer is produced by blue sail chemical GmbH, the trioctyl trimellitate in the plasticizer is produced by Linked chemical industries GmbH, the epoxidized soybean oil in the plasticizer is produced by Jiaao environmental protection science and technology GmbH, the cyclohexane 1, 2-diisononyl phthalate in the plasticizer is produced by Linked chemical industries GmbH, the dioctyl sebacate in the plasticizer is produced by Jiaao environmental protection and technology GmbH, dioctyl adipate in the plasticizer was produced by synechanics chemical industries, ltd;
the thermoplastic polyurethane elastomer TPU in the elastomer is produced by Baoli Wei plastics Limited, Shenzhen, the nitrile rubber P83 in the elastomer is produced by Shanghai Liangdian chemicals Limited, and the ethylene-vinyl acetate copolymer EVA in the elastomer is produced by Shanghai Yan quasi-biotechnology Limited;
the filler is calcium carbonate particles with the particle size range of 6.5-15 um, and is produced by Jiangxi Guanghua chemical industry Limited liability company;
the stabilizer is a lead-free calcium zinc stabilizer produced by Huizhou brocade source plasticizing materials, Inc.;
the lubricant is prepared by compounding one or more of stearic acid, paraffin and PE wax, the stearic acid in the lubricant is produced by eastern palm industry Co., Ltd in the model number of VA-1865, the paraffin in the lubricant is produced by China Petroleum-cis petrochemical company in the model number of 58, and the PE wax in the lubricant is produced by Jiangxi Macro Yuntai chemical industry Co., Ltd in the model number of PE-2;
the antibacterial mildew preventive is prepared by compounding one or more of 4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT, low-yellowing pyridine zinc sulfate ZPT and water-soluble N-octyl isothiazolinone OIT, the 4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT in the antibacterial mildew preventive is produced by Yangshan Ministry of Living chemical industry, the low-yellowing pyridine zinc sulfate ZPT in the antibacterial mildew preventive is produced by Guangzhou Ahaole mildew-proof antibacterial science and technology, and the water-soluble N-octyl isothiazolinone OIT in the antibacterial mildew preventive is produced by Yangshan Ministry of Living chemical industry;
the dispersion compatilizer is styrene maleic anhydride copolymer produced by Shenzhen Pasteur science and technology Limited.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. The application of the torque rheometer in detecting the processability of the soft PVC door seal material.
2. The application of the torque rheometer in the detection of the processability of a soft PVC door seal material, according to claim 1, is characterized in that the application is the application of the torque rheometer in the detection and evaluation of the plasticization processability of the soft PVC door seal material.
3. The application of the device according to claim 2, wherein when the torque rheometer is used for detecting and evaluating the processing performance of the soft PVC door seal material, the torque rheometer comprises a main driving system, a closed mixing platform, a main measurement and control system, a multi-section temperature measurement and control system, a data acquisition system, computer experiment software, a data processing system and a display screen assembly;
setting specific temperature and rotation speed on a torque rheometer, and keeping the temperature after the temperature is raised to the set temperature;
accurately weighing a soft PVC door seal material sample with a specific weight and a formula meeting the requirement;
starting a torque rheometer, clearing original data in a torque rheometer system when the rotating speed rises to a set value, and pouring the precisely weighed soft PVC door seal material sample with a specific weight and a formula meeting the requirement into an internal mixing platform of the torque rheometer within 5 s;
immediately releasing a press hammer of the torque rheometer, and naturally falling down and pressing the press hammer on the soft PVC door seal material sample material;
or locking a pressing hammer of the torque rheometer to compact the soft PVC door seal material sample material;
generating a data curve displayed on a display screen assembly of the torque rheometer after a period of time;
establishing a corresponding relation between the material torque (Tq) of the soft PVC door seal material sample, the material temperature (Tm) of the soft PVC door seal material sample and the plasticizing processing time of the soft PVC door seal material sample on a computer experiment software interface of a torque rheometer;
based on the plasticizing property of the soft PVC door seal material sample, the corresponding relation between the material torque (Tq) of the soft PVC door seal material sample and the material temperature (Tq) of the soft PVC door seal material sample in different batches and the plasticizing processing time of the soft PVC door seal material sample is combined, and the method can be applied to detection and evaluation of the consistency of the plasticizing processing performance of the soft PVC door seal material sample materials in different batches.
4. The use according to claim 2, characterized in that the torque rheometer is used for testing and evaluating the processability of soft PVC gate seals, and the Shore hardness of the applied soft PVC gate seals is in the range of 50A-90A.
5. When the torque rheometer is used for detecting and evaluating the processing performance of a soft PVC (polyvinyl chloride) door seal material, the torque rheometer is characterized in that the temperature setting range of each zone of a multi-zone temperature measurement and control system of the torque rheometer is 110-180 ℃, the rotating speed setting range of a main driving system of the torque rheometer is 20-50 rpm, and the heat preservation time is 30min after the temperature is raised to the set temperature.
6. The torque rheometer of claim 3, when used for testing and evaluating the processability of a soft PVC dock seal material, is characterized in that the weight of the hammer is in a range of 3kg to 10 kg.
7. When the torque rheometer is used for detecting and evaluating the processability of a soft PVC door seal material, the torque rheometer is characterized in that a data curve is generated on a display screen assembly of the torque rheometer after a period of time, and the displayed data curve can be intercepted within 10-60 min according to the actual plasticizing balance time of a soft PVC door seal material sample;
the obtained data curve can reflect the plasticizing processing performance of the soft PVC door seal material, and can be used as a soft PVC door seal material sample with different formulas to distinguish the difference of the plasticizing processing performance; and the method can also judge whether the plasticizing processing performance of the soft PVC door seal material sample materials in different production time is consistent or not aiming at the soft PVC door seal material sample with the same formula.
8. The method for intercepting displayed data curves according to claim 7, wherein the intercepting displayed data curves can directly reflect: the soft PVC door seal material sample comprises material loading peak time, plasticizing peak time, full width at half maximum of a plasticizing peak, plasticizing temperature, balance torque, balance temperature, torque corresponding to the material loading peak time, plasticizing peak torque corresponding to the plasticizing peak time, plasticizing stable processing time and balance time required for reaching the balance torque or the balance temperature.
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