High-strength sealing thermoplastic elastomer and preparation method thereof

A technology for thermoplastic elastomer and sealing, which is applied in the field of high-strength sealing thermoplastic elastomer and its preparation, which can solve the problems of high welding strength, poor effect, and short thermal welding time of refrigerator sealing strips, and achieve good melting and mixing effects , more uniform mixing and stable performance

Inactive Publication Date: 2019-06-11
奥世达弹性体(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermoplastic elastomer extruded refrigerator sealing strip product prepared by this invention has high welding strength and short heat welding time, but its use is limited...

Method used

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  • High-strength sealing thermoplastic elastomer and preparation method thereof
  • High-strength sealing thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The thermoplastic elastomer for high-strength sealing is in parts by weight, including the following raw materials: 15 parts of hydrogenated styrene elastomer, 20 parts of white oil, 2.5 parts of polypropylene, 4 parts of olefinic elastomer POE, 3.5 parts of metallocene polyethylene, poly 3.5 parts of modified propylene alloy, 5.5 parts of mineral powder, 0.8 parts of stabilizer, 5 parts of natural rubber latex, 7.5 parts of hydroxyl silicone oil, and 2 parts of lignosulfonic acid.

[0027] The polypropylene is a homopolypropylene with a melt index of 6.5 g / 10 min. The white oil has a viscosity of 90mm at 40°C 2 · s paraffin oil. The metallocene polyethylene is a low melt index metallocene polyethylene with a melt index of 1 g / 10min. The olefinic elastomer POE is ethylene-octene copolymer, and the polypropylene alloy modified product is the modified product of Shandong Tairuifeng New Material Co., Ltd., the model is TF45D. This product is a high-flow material, and the...

Embodiment 2

[0030] The thermoplastic elastomer for high-strength sealing is in parts by weight, including the following raw materials: 10 parts of hydrogenated styrene elastomer, 30 parts of white oil, 1 part of polypropylene, 6 parts of olefinic elastomer POE, 1 part of metallocene polyethylene, poly 5 parts of modified propylene alloy, 3 parts of mineral powder, 1.2 parts of stabilizer, 4 parts of natural rubber latex, 10 parts of hydroxyl silicone oil, and 1 part of lignosulfonic acid.

[0031] The polypropylene is a homopolypropylene with a melt index of 8 g / 10 min. The white oil has a viscosity of 60mm at 40°C 2 · s naphthenic oil. The metallocene polyethylene is a low melt index metallocene polyethylene with a melt index of 1.5 g / 10min. The olefinic elastomer POE is ethylene-octene copolymer, and the polypropylene alloy modified product is the modified product of Shandong Tairuifeng New Material Co., Ltd., the model is TF45D. This product is a high-flow material, and the melt inde...

Embodiment 3

[0034] The thermoplastic elastomer for high-strength sealing is in parts by weight, including the following raw materials: 20 parts of hydrogenated styrene elastomer, 10 parts of white oil, 4 parts of polypropylene, 2 parts of olefinic elastomer POE, 6 parts of metallocene polyethylene, poly 2 parts of modified propylene alloy, 8 parts of mineral powder, 0.4 part of stabilizer, 6 parts of natural rubber latex, 5 parts of hydroxyl silicone oil, and 3 parts of lignosulfonic acid.

[0035] The polypropylene is homopolypropylene or copolymerized polypropylene with a melt index of 5 g / 10min. The white oil has a viscosity of 120mm at 40°C 2 · s paraffin oil. The metallocene polyethylene is a low melt index metallocene polyethylene with a melt index of 1.5 g / 10min. The olefinic elastomer POE is ethylene-octene copolymer, and the polypropylene alloy modified product is the modified product of Shandong Tairuifeng New Material Co., Ltd., the model is TF45D. This product is a high-flow...

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Abstract

The invention discloses a high-strength sealing thermoplastic elastomer and a preparation method thereof, and belongs to the technical field of polymer products. The high-strength sealing thermoplastic elastomer has raw material components including a hydrogenated styrene elastomer, white oil, polypropylene, an olefin elastomer, metallocene polyethylene, a polypropylene alloy modification substance, mineral powder, a stabilizer, natural rubber latex, hydroxy silicone oil and lignin sulfonic acid. The preparation method includes mixing, extrusion and other steps. According to the invention, the high- and low-temperature resistance and physical properties of the high-strength sealing thermoplastic elastomer are improved by using the natural rubber latex, hydroxy silicone oil and lignosulfonic acid for reinforcing.

Description

technical field [0001] The invention belongs to the technical field of polymer products, and in particular relates to a thermoplastic elastomer for high-strength sealing and a preparation method thereof. Background technique [0002] At present, the refrigerator sealing strip products are still mainly made of PVC materials. For PVC, the advantages are fast processing speed, high welding strength, low scrap rate, and low overall cost for customers. The disadvantages are that it becomes hard plastic at low temperature, poor sealing at low temperature; poor resilience; easy to precipitate pollution; poor environmental friendliness. However, due to the energy saving of home appliances and the requirements of the large refrigerator market, PVC with poor low temperature resistance is really difficult to meet the requirements. Therefore, Haier, Meiling, Xinfei, Hisense and other refrigerator OEMs have invested in the research of thermoplastic elastomer sealing strips, trying to use...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L91/06C08L23/10C08L23/08C08L23/06C08L97/00C08L83/04C08L7/02B29C48/92
Inventor 温韶坤谷平生洪春林
Owner 奥世达弹性体(深圳)有限公司
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