CABLE FORMULATION

Abstract

The invention relates to a formulation suitable for use in polymeric insulating materials for electrical cables in household appliances and kitchenware.

Description

CABLE FORMULATION Technical Area The invention involves the use of polymeric insulation for electrical cables in household appliances and kitchenware. It relates to the formulation being suitable for use in the materials. The invention is particularly suitable for low temperatures depending on climatic conditions, and also as a result of chassis contact. expected to be resistant to high temperatures (-40 / +135 °C) with a formulation suitable for use in polymeric insulating materials for electrical cables It is related. State of the Art The cables used in the home appliance industry are adapted to climate conditions and the operating principles of the appliance. in terms of being able to operate in a wide temperature range such as -40 to +135 °C This is expected. High-performance cable alternatives are being considered to serve this purpose. due to cost-benefit analysis, it is both low-cost and expected within the relevant temperature range. The search for alternative cable polymer insulation materials that could exhibit similar strengths has emerged. This is the case. In this regard, PVC-based cables meet the relevant conditions up to certain limiting requirements. However, the HAR standard used in the white goods sector and Based on information obtained from the literature, PVC that can meet conditions of 90 °C and above. It appears there are shortcomings in the fundamental cable formulation. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement is needed in the relevant technical field. It has been made. Brief Description of the Invention The present invention meets the aforementioned requirements and overcomes all the disadvantages. It is related to cable formulation, which eliminates problems and brings some additional advantages. 2 The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The main purpose of the invention is to provide a PVC-based system that can operate over a wide temperature range. The goal is to develop cable formulations. Relatively low efficiency is observed in PVC-based cable formulations. As a result of the investigations regarding the residual temperature resistance of the main matrix The “K” value, which depends on the molecular weight of the material PVC, is approximately in the 70s. It has been observed that it is in the order of magnitude. However, high molecular weight, i.e., "K" value The fact that polymers can exhibit high mechanical and thermal properties makes PVC-based It has been determined that it has not been tested in cable formulations. Because a high "K" value is high. molecular weight, in other words, the increase in viscosity that affects its processing status. This is why studies with high "K" values ​​have not been conducted on the process. Optimization can be based on requirements. These two technical problems influence each other. PVC with a high “K” value (K>70) can be used to achieve high temperature resistance. This can only be achieved under optimum process conditions. For these two technical problems, a high "K" value that can operate between -40 and +135 °C is required. The process parameters of the cable formulation containing (molecular weight) PVC were both The formulation components have been optimized in terms of their composition. PVC's "K" The value was determined to be >70, and it is both low and... in terms of other components as well. specially selected thermal insulation to support the relevant resistance at high temperatures. stabilizers, plasticizers, thermoplastic elastomers (TPE) and fillers Formulation percentages and also process conditions of polymer mixtures are statistically tested. It was optimized using the design method (Minitab). The structural and characteristic features and all the advantages of the invention are given in the figures below. This becomes clearer thanks to the detailed explanation written with references to these figures. This will be understood as such, and therefore the evaluation will also take these forms and detailed explanations into account. This should be done taking that into consideration. Detailed Description of the Invention In this detailed explanation, the preferred configurations of the invention are not merely for better understanding the subject. It is explained in a way that facilitates understanding. 35 3 The invention involves the use of polymeric insulation for electrical cables in household appliances and kitchenware. The invention relates to a cable formulation suitable for use in materials. The subject of the invention is cable. The formulation consists of PVC (K>70), plasticizer, heat stabilizer, calcined kaolin, and TPE. It includes. A preferred application of the invention is a cable formulation containing 40-60% PVC by weight. (K>70), 20-30% plasticizer, 7-11% heat stabilizer, 7-13% calcined kaolin and It contains 0.5%-8% TPE. The production method for the cable formulation that is the subject of the invention involves, firstly, a gradual heating process. Blending is carried out. In the first stage, PVC and stabilizer are primarily mixed in a dry environment. They are blended, then TPE is added. PVC and stabilizer. The blending speed is in the range of 1000-1500 rpm. TPE addition is 30-45. It is carried out at ±5°C. The next processing step involves dry blending. Plasticizer is added to the mixer and the plasticization process is applied. The plasticizer is added to the dry blending mixture when the temperature reaches 65-70 °C. The system is being monitored, and the engine speed remains at 60% of the engine speed during the absorption period. Next, calcined kaolin, which will be used as a filler, is added to the mixture. Kaolin addition, preferably when dry blending is achieved again (at 135-140 °C) is being done. In the next processing step, the wet mixture is processed until it turns into a dry powder. It is cooked. The cooking temperature is preferably in the range of 140-150°C. The resulting powder The mixture is granulated using a granulator. In this process step, Feed and head temperatures are in the range of 165-170°C. Granulated and The mixture, which has reached masterbatch consistency, is used as cable insulation material. It is used. In the aforementioned usage, the application temperature is preferably between 180°C and 190°C. It is determined as follows. The PVC used in the invention has a K value greater than 70. It has a high molecular weight and Therefore, the use of PVC with a high "K" value is applicable to all polymers due to their nature. It provides high mechanical and thermal properties for the related invention as well. However, because it brings with it significant process limitations, it will make processing easier. auxiliary inputs and also both the ratios of these inputs and the process 4 Optimization of these parameters is needed. Literature and industries generally state this. Due to optimization concerns, it falls short in this regard. In the home appliance sector, phthalate-free products are preferred due to regulations. Therefore, the plasticizer used must also be phthalate-free. The plasticizer; Due to its long carbon chain, PVC and consequently the finished product are flexible. It can provide both low and high thermal efficiency due to its long carbon chain. The properties allow it to withstand a wider temperature range compared to other plasticizers. Thanks to this, the aforementioned type of plasticizer was used. The invention is designed to meet the demanding and wide range of thermal requirements while being cost-effective. suitable, in terms of regulations, the input chemicals do not pose a risk and are currently Ca / Zn, an insulation stabilizer widely used in similar cable industries. A stabilizer has been used. Thermoplastic with low glass transition temperature for low temperature resistance. The elastomer-like polymer component provides sufficient contribution. With PVC TPE raw material formulated with PVC to support compatibility. It has been used. To reduce the cost of the polymeric-based formulation that is the subject of the invention. If thermal resistance is also expected in the filler material that can be used, then calcination is recommended. Kaolin makes significant contributions. Therefore, calcined kaolin is used as a filler material. It has been used. In this invention, the high molecular weight of PVC and plasticizer is the reason for the invention. During the blending stage, absorption should be done well, resulting in dry blending rather than wet blending. It is possible to obtain it. In different applications of the invention, PVC is used as the main polymer material with a K value of 90. Various types up to that size can be tried. As an alternative to Ca / Zn stabilizers, considering cost and thermal resistance factors... With 35 evaluations, Ba / Zn stabilizers can be tested. As an alternative to the behavior of TPE at low temperatures, different low-temperature methods can be used. Polymeric plasticizers known to have good temperature resistance properties can be tested. (For example, DOS, DOA).

Claims

1. Polymeric insulation for electrical cables in white goods and kitchen appliances. It is a cable formulation suitable for use in materials, and its characteristic feature is;  PVC with a K value greater than 70,  plasticizer, • heat stabilizer,  calcined kaolin and  It contains TPE.

2. A cable formulation conforming to Claim 1, with the characteristic of being 40-60% PVC by weight (K>70). (K>70), 20-30% plasticizer, 7-11% heat stabilizer, 7-13% calcined kaolin and It contains 0.5%-8% TPE.

3. A cable formulation conforming to Claim 1, characterized by its use of Ca / Zn as a heat stabilizer. It includes.

4. A cable formulation conforming to Claim 1, characterized by its use of Ba / Zn as a thermal stabilizer. It includes.