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Microfoaming functional masterbatch, door seal, preparation method of door seal and refrigeration equipment

A functional masterbatch and micro-foaming technology, applied in the field of refrigeration equipment and micro-foaming functional masterbatch, can solve the problem of high risk of plasticizer migration

Inactive Publication Date: 2017-12-22
HEFEI HUALING CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a micro-foaming functional masterbatch, which aims to solve the problem of high risk of plasticizer migration in existing door seals

Method used

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  • Microfoaming functional masterbatch, door seal, preparation method of door seal and refrigeration equipment
  • Microfoaming functional masterbatch, door seal, preparation method of door seal and refrigeration equipment
  • Microfoaming functional masterbatch, door seal, preparation method of door seal and refrigeration equipment

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preparation example Construction

[0043] see figure 2 , the present invention also provides a kind of preparation method of door seal, the preparation method of described door seal comprises the following steps:

[0044] S1, making PVC pellets and the micro-foaming functional masterbatch as described above, the PVC pellets include PVC resin powder, plasticizer, filler and auxiliary additives;

[0045] S2, mixing the micro-foaming functional masterbatch and the PVC pellets evenly, drying and extruding to obtain a door seal.

[0046] For the components of the micro-foaming functional masterbatch, please refer to the foregoing examples. Since this micro-foaming functional masterbatch adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the benefits brought by the technical solutions of the above-mentioned embodiments. effects, which will not be repeated here.

[0047] Specifically, after the PVC material granules are produced, the PVC resin powder and the micro-foaming...

Embodiment 1

[0060] A door seal, which includes PVC pellets and micro-foaming functional master batches. The PVC granules include by weight: 100 parts of PVC resin powder, 42 parts of plasticizer, 50 parts of filler, 5 parts of heat stabilizer, 1 part of antioxidant, 0.5 part of lubricant and 1 part of color masterbatch, The parts by weight of the micro-foaming functional masterbatch is 5 parts. The micro-foaming functional master batch includes by weight: 100 parts of coating resin EVA, 30 parts of foaming agent AIBN, 7 parts of foaming aid zinc oxide, 1.5 parts of lubricant PE wax and 3 parts of nucleating agent talcum powder.

[0061] The preparation method of this door seal comprises the following steps:

[0062] S1, making PVC pellets and micro-foaming functional masterbatches;

[0063] S2, mixing the micro-foaming functional masterbatch and the PVC pellets according to the weight ratio of the micro-foaming functional masterbatch and PVC resin powder is 5:100, then drying and extrus...

Embodiment 2

[0072] A door seal, which includes PVC pellets and micro-foaming functional master batches. The PVC granules include by weight: 100 parts of PVC resin powder, 36 parts of plasticizer, 50 parts of filler, 5 parts of heat stabilizer, 1 part of antioxidant, 0.5 part of lubricant and 1 part of color masterbatch, The parts by weight of the micro-foaming functional masterbatch is 10 parts. The micro-foaming functional master batch includes by weight: 100 parts of coating resin EVA, 30 parts of foaming agent AIBN, 7 parts of foaming aid zinc oxide, 1.5 parts of lubricant PE wax and 3 parts of nucleating agent talcum powder.

[0073] The preparation method of this door seal comprises the following steps:

[0074] S1, making PVC pellets and micro-foaming functional masterbatches;

[0075] S2, mixing the micro-foaming functional masterbatch and the PVC pellets according to the ratio of micro-foaming functional masterbatch and PVC resin powder to a ratio of 10:100 by weight, drying and...

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Abstract

The invention discloses a microfoaming functional masterbatch, a door seal, a preparation method of the door seal and refrigeration equipment. The microfoaming functional masterbatch is prepared from coated resin as well as a foaming agent, a blowing promoter, a lubricant and a nucleating agent dispersed in the coated resin, wherein the coated resin is one of EVA (Ethylene Vinyl Acetate) resin, POE (Polyolefin Elastomer) resin and LDPE (Low-Density Polyethylene) resin. The technical scheme adopted by the invention provides the microfoaming functional masterbatch for producing the door seal and aims at solving the problem of high migration risk of an existing plasticizer for the door seal.

Description

technical field [0001] The invention relates to the field of micro-foaming technology, in particular to a micro-foaming functional masterbatch, a door seal using the micro-foaming functional masterbatch, a preparation method thereof, and a refrigeration device using the door seal. Background technique [0002] Refrigeration equipment, such as refrigerators or freezers, is usually provided with a door seal on the door body. The door seal is composed of airbag, magnetic strip and soft PVC. In the prior art, plasticizers with a content of 20-30% are added to the soft PVC, and the high amount of plasticizers will cause the problem of plasticizer migration in the long-term use of the door seal, which will lead to the door body Difficult to open and plasticizer contamination of food and liner problems. At the same time, the door seal will harden, the sealing performance will be reduced, and the problems of condensation and cold leakage will occur. The disadvantage of the above t...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/08C08L23/06C08K3/34C08J9/10
CPCC08J9/102C08J9/103C08J2203/04C08J2327/06C08J2423/08C08L27/06C08L2201/14C08L2203/14C08L2205/025C08L2205/03C08L2205/24C08L2207/066C08L23/0853C08L23/0815C08L23/06C08K3/34
Inventor 白二雷沈剑霍耀楠
Owner HEFEI HUALING CO LTD
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