CN105733080A - Elastic refrigerator door sealing strip - Google Patents
Elastic refrigerator door sealing strip Download PDFInfo
- Publication number
- CN105733080A CN105733080A CN201610315536.1A CN201610315536A CN105733080A CN 105733080 A CN105733080 A CN 105733080A CN 201610315536 A CN201610315536 A CN 201610315536A CN 105733080 A CN105733080 A CN 105733080A
- Authority
- CN
- China
- Prior art keywords
- parts
- sealing strip
- refrigerator door
- elastic
- door sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an elastic refrigerator door sealing strip. The elastic refrigerator door sealing strip is prepared from the following components in parts by weight: 30-40 parts of polyethylene, 15-20 parts of an ethylene-vinyl acetate copolymer, 20-30 parts of silicone rubber, 10-15 parts of filler, 1-3 parts of a calcium-zinc complex heat stabilizer, 3-5 parts of a plasticizer, 5-8 parts of an antioxidant, 0.5-2 parts of sulphur, 0.5-1 part of a vulcanization accelerator, 0.5-1 part of zinc stearate and 1-3 parts of a functional additive. The elastic refrigerator door sealing strip is improved in performance of a base material by virtue of scientific formula design, the added amount of the additive is effectively reduced, and the problem that elasticity of the refrigerator door sealing strip is poor is fundamentally solved, the elastic refrigerator door sealing strip has the advantages of excellent mechanical properties, safety, environmental friendliness, soft texture and the like, overall performance is excellent, and the service life is effectively prolonged.
Description
Technical field
The present invention relates to sealing strip processing technique field, be specifically related to one and there is elastic refrigerator door sealing strip.
Background technology
In the door body structure of the refrigerator such as single open-door or double door, it usually needs sealing joint strip is installed around door body.The performances such as along with people are to healthy concern and the development of refrigerator industry, people are more and more higher to the requirement of refrigerator part, especially the environmental-protecting performance to seal strip for refrigerator door, except requiring mechanical property, also should possess additive and not migrate, additive safety non-toxic.
But current refrigerator theft sealing rubber strip mostly uses polyvinyl chloride resin matrix, and add substantial amounts of auxiliary agent and be prepared from, owing to polyvinyl chloride resin is the hardest, in the course of processing, typically require interpolation substantial amounts of plasticizer, softening agent etc. add auxiliary agent to improve its processing characteristics, even if additive therefor is nontoxic additive, but owing to its addition strengthens, cause character harder, once turning round deformation.
Summary of the invention
It is an object of the invention to provide a kind of reasonable mixture ratio, flexible there is elastic refrigerator door sealing strip.
For reaching above-mentioned purpose, the one of the present invention has elastic refrigerator door sealing strip, is made up of the raw material of following weight portion: polyethylene 30～40 parts, ethylene-vinyl acetate copolymer 15～20 parts, silicone rubber 20～30 parts, filler 10～15 parts, Ca-Zn composite heat stabilizer 1～3 parts, plasticizer 3～5 parts, antioxidant 5～8 parts, sulfur 0.5～2 parts, vulcanization accelerator 0.5～1 part, zinc stearate 0.5～1 part, function additive 1～3 parts.
Described function additive includes light stabilizer and biocide mildewcide.
In described ethylene-vinyl acetate copolymer, the content of vinyl acetate is 50～60%.
Described silicone rubber is methyl vinyl silicone rubber.
The mixture that described filler is nano silicon and nano-tourmaline powder mixes with weight ratio 3～5:1.
Described plasticizer is the mixture that tricresyl phosphite isooctyl acrylate and polyadipate-1,2-propylene glycol ester mix with the ratio of mass ratio 1～2:1.
The invention has the beneficial effects as follows: designed by the formula of science, improve the performance of matrix material, effectively reduce the addition of auxiliary agent, the problem that fundamentally row solves refrigerator door sealing strip poor flexibility, there is the advantages such as excellent in mechanical performance, safety and environmental protection, quality softness, excellent combination property, effectively carries service life.
Detailed description of the invention
Below in conjunction with specific embodiment, one of the present invention is had elastic refrigerator door sealing strip to be described further.
Embodiment 1:
Take polyethylene 30 parts, ethylene-vinyl acetate copolymer (EVA) 15 parts, methyl vinyl silicone rubber 20 parts, filler 10 parts, Ca-Zn composite heat stabilizer 1 part, plasticizer 3 parts, 5 parts of antioxidant, 0.5 part of sulfur, vulcanization accelerator 0.5 part, zinc stearate 0.5 part, function additive 1 part；Wherein, in described EVA, the content of vinyl acetate is 50～60%；The mixture that described filler is nano silicon and nano-tourmaline powder mixes with weight ratio 3:1；Function additive described in the mixture that described plasticizer is tricresyl phosphite isooctyl acrylate and polyadipate-1,2-propylene glycol ester to be mixed with the ratio of mass ratio 1:1 includes light stabilizer and biocide mildewcide.
Embodiment 2:
Take polyethylene 40 parts, ethylene-vinyl acetate copolymer (EVA) 20 parts, methyl vinyl silicone rubber 30 parts, filler 15 parts, Ca-Zn composite heat stabilizer 3 parts, plasticizer 5 parts, 8 parts of antioxidant, 2 parts of sulfur, vulcanization accelerator 1 part, zinc stearate 1 part, function additive 3 parts；Wherein, in described EVA, the content of vinyl acetate is 50～60%；The mixture that described filler is nano silicon and nano-tourmaline powder mixes with weight ratio 5:1；Described plasticizer is the mixture that tricresyl phosphite isooctyl acrylate and polyadipate-1,2-propylene glycol ester mix with the ratio of mass ratio 2:1；Described function additive includes light stabilizer and biocide mildewcide.
Preparation method is as follows:
In banbury, control banburying temperature in the range of 40～80 DEG C, by the polyethylene of formula ratio, ethylene-vinyl acetate copolymer (EVA) and methyl vinyl silicone rubber, first become mixed matrix with the speed mixed on low speed 5～8min of 10～15r/min, being subsequently adding the Ca-Zn composite heat stabilizer of formula ratio, antioxidant, plasticizer, filler, zinc stearate and function additive, the speed banburying with 20～50r/min mixes 10～30min to uniformly；Finally mixed material is taken out from banbury, mill in two-roll mill so that it is bag roller, successively add vulcanization accelerator and sulfur, after mix homogeneously, adjust roll spacing bottom sheet, put into mould after ageing, use vulcanizing press compression molding.
Above-mentioned have elastic refrigerator door sealing strip, with the matrix of asepsis environment-protecting and auxiliary agent as raw material, by being used in mixed way of multiple matrix, effectively reduce the quantity of polyvinyl chloride resin additive, thus it is effectively improved the elasticity of fluid sealant, after tested, its elongation at break is 360～420% to the sealing strip of described preparation, and hot strength is 11～14MPa；Surface quality is good, and smooth pliable mildew-resistant grade is 0 grade, and germicidal levels is 1 grade.
Claims (6)
1. there is an elastic refrigerator door sealing strip, be made up of the raw material of following weight portion: polyethylene 30～40 parts, ethylene-vinyl acetate copolymer 15～20 parts, silicone rubber 20～30 parts, filler 10～15 parts, Ca-Zn composite heat stabilizer 1～3 parts, plasticizer 3～5 parts, antioxidant 5～8 parts, sulfur 0.5～2 parts, vulcanization accelerator 0.5～1 part, zinc stearate 0.5～1 part, function additive 1～3 parts.
One the most according to claim 1 has elastic refrigerator door sealing strip, it is characterised in that: described function additive includes light stabilizer and biocide mildewcide.
One the most according to claim 1 has elastic refrigerator door sealing strip, it is characterised in that: in described ethylene-vinyl acetate copolymer, the content of vinyl acetate is 50～60%.
One the most according to claim 1 has elastic refrigerator door sealing strip, it is characterised in that: described silicone rubber is methyl vinyl silicone rubber.
One the most according to claim 1 has elastic refrigerator door sealing strip, it is characterised in that: the mixture that described filler is nano silicon and nano-tourmaline powder mixes with weight ratio 3～5:1.
One the most according to claim 1 has elastic refrigerator door sealing strip, it is characterised in that: described plasticizer is the mixture that tricresyl phosphite isooctyl acrylate and polyadipate-1,2-PD ester mix with the ratio of mass ratio 1～2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610315536.1A CN105733080A (en) | 2016-05-14 | 2016-05-14 | Elastic refrigerator door sealing strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610315536.1A CN105733080A (en) | 2016-05-14 | 2016-05-14 | Elastic refrigerator door sealing strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105733080A true CN105733080A (en) | 2016-07-06 |
Family
ID=56288930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610315536.1A Pending CN105733080A (en) | 2016-05-14 | 2016-05-14 | Elastic refrigerator door sealing strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105733080A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912453A (en) * | 2018-07-10 | 2018-11-30 | 安徽省星年华电器有限公司 | A kind of refrigerator door sealing strip for strengthening heat-proof quality |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400051A (en) * | 2015-12-21 | 2016-03-16 | 常熟市久昇电器有限公司 | Environment-friendly migration-resistant refrigerator door sealing strip |
-
2016
- 2016-05-14 CN CN201610315536.1A patent/CN105733080A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400051A (en) * | 2015-12-21 | 2016-03-16 | 常熟市久昇电器有限公司 | Environment-friendly migration-resistant refrigerator door sealing strip |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912453A (en) * | 2018-07-10 | 2018-11-30 | 安徽省星年华电器有限公司 | A kind of refrigerator door sealing strip for strengthening heat-proof quality |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |