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PVC (Polyvinyl Chloride) sealing strip and application thereof

A sealing strip and PVC resin technology, applied in the field of materials, can solve problems such as non-compliance, poor resilience, and migration resistance, and achieve the effects of improving resilience performance, improving migration resistance, and high migration resistance

Active Publication Date: 2014-07-16
HEFEI MIDEA REFRIGERATOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main disadvantages of PVC door seals are poor resilience, poor cold resistance, intolerance to migration, and easy corrosion of refrigerator liners and side panels. These plasticizers are not environmentally friendly and do not comply with EU standards and regulations such as ROSH and REACH, which greatly affects the export of refrigerators in my country.

Method used

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  • PVC (Polyvinyl Chloride) sealing strip and application thereof
  • PVC (Polyvinyl Chloride) sealing strip and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Raw material formula:

[0045] 100g of PVC resin (Formosa Plastics S-70), 40g of combined plasticizer containing diisononyl adipate plasticizer and trioctyl trimellitate plasticizer, 5g of epoxy soybean oil plasticizer agent, 10g of polyester plasticizer (PN7030), 5g of elastomer (P83), 5g of Ca-Zn stabilizer, 30g of calcium carbonate (LD-800), 5g of lubricant (stearic acid), 1g Titanium dioxide pigment, 1-3g antioxidant and thermal aging agent and 0.5-2g antibacterial and antifungal agent.

[0046] Preparation:

[0047] First mix and stir the pigment, additives, antibacterial and antifungal agent and Ca-Zn stabilizer to obtain a stabilizer mixture, then put the PVC resin into a high-speed mixer, stir at a low speed first, and then mix the obtained stabilizer mixture Stir for 5 minutes after adding, then slowly add the plasticizer one by one with stirring, turn to high speed after spraying the plasticizer, adjust the high and low speed to control the temperature of the ...

Embodiment 2

[0049] Raw material formula:

[0050] 100g of PVC resin (Formosa Plastics S-70), 40g of trioctyl trimellitate plasticizer, 5g of epoxy soybean oil plasticizer, 10g of polyester plasticizer (PN7030), 10g of powder Nitrile (P83), 5g of Ca-Zn stabilizer, 30g of calcium carbonate (LD-800), 5g of lubricant (stearic acid), 0.2-1g of titanium dioxide pigment, 1-3g of antioxidant and heat aging agent and 0.5-2g antibacterial and antifungal agent.

[0051] Preparation method: with embodiment 1.

Embodiment 3

[0053] Raw material formula:

[0054] 100g of PVC resin (Formosa Plastics S-70), 30g of diisononyl adipate plasticizer, 10g of trioctyl trimellitate plasticizer, 5g of epoxy soybean oil plasticizer, 15g of Polyester plasticizer (PN7030), 5g of powdered nitrile (P83), 5g of Ca-Zn stabilizer, 30g of calcium carbonate (LD-800), 5g of lubricant (paraffin wax and stearic acid combination), 0.2- 1g of titanium dioxide pigment, 1-3g of antioxidant and thermal aging agent and 0.5-2g of antibacterial and antifungal agent.

[0055] Preparation method: with embodiment 1.

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Abstract

The invention discloses a PVC (Polyvinyl Chloride) sealing strip and an application thereof. The PVC sealing strip comprises 40-50 parts of PVC resin, 25-50 parts of plasticizer, 2-10 parts of elastomer, 2-5 parts of stabilizer, 15-25 parts of filler and 1-3 parts of lubricant, wherein the plasticizer is at least one of a diisononyl adipate plasticizer, a trioctyl trimellitate plasticizer, an epoxidized soybean oil plasticizer and a polyester plasticizer. The PVC sealing strip provided by the inveniton has high migration resistance, heat resistance, cold resistance and environmental friendliness performance.

Description

technical field [0001] The invention belongs to the field of materials, in particular, the invention relates to a PVC sealing strip and its application. Background technique [0002] At present, most of the sealing strips used in refrigerators and freezers are soft PVC materials. For PVC sealing strips, the main components are PVC powder resin, plasticizers, fillers and some stabilizers. Plasticizers are generally added in combination, generally low-molecular-weight aromatic hydrocarbon esters such as DOP and DOTP, supplemented by some cold-resistant and heat-resistant plasticizers, such as TOTM, DOA, DOS, and ESO. Environmental protection has always been an important topic in the world, especially raw materials such as DOP, DOTP and DOA do not comply with some EU regulations such as REACH. [0003] At present, the main disadvantages of PVC door seals are poor resilience, poor cold resistance, intolerance to migration, and easy corrosion of refrigerator liners and side pan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L67/00C08K13/02C08K5/11C08K5/12C08K5/1515F25D23/00
Inventor 严桃
Owner HEFEI MIDEA REFRIGERATOR CO LTD
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