CN104817810A - Thermoplastic elastomer material for high-welding-strength refrigerator sealing strips and preparation method thereof - Google Patents
Thermoplastic elastomer material for high-welding-strength refrigerator sealing strips and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a thermoplastic elastomer material for high-welding-strength refrigerator sealing strips and a preparation method thereof. The thermoplastic elastomer material for high-welding-strength refrigerator sealing strips is composed of the following components in parts by weight: 10-20 parts of hydrogenated styrene elastomer, 10-30 parts of white oil, 1-4 parts of polypropylene, 2-6 parts of POE (polyolefin elastomer), 1-6 parts of metallocene polyethylene, 2-5 parts of polypropylene alloy modifier, 3-8 parts of mineral powder and 0.4-1.2 parts of stabilizer. The preparation method comprises the following steps: mixing the hydrogenated styrene elastomer with the white oil, mixing with the rest materials, putting into a double screw extruder, carrying out melt extrusion and granulating. The refrigerator sealing strip product extruded from the thermoplastic elastomer has the advantages of high welding strength and short thermal welding time. The thermoplastic elastomer material can be quickly and stably extruded to obtain the thin-wall refrigerator sealing strip, and has the advantages of high production efficiency and stable product size.
Description
Technical field
The present invention relates to a kind of polymer modification and manufacture field, particularly one high welding strength refrigerator sealed strip thermoplastic elastic material and preparation method thereof.
Background technology
At present, refrigerator sealed strip product is still based on PVC material.Concerning PVC, advantage is, process velocity is fast, and welding strength is high, and scrap rate is low, and client comprehensive cost is low, and shortcoming becomes duroplasts under low temperature, and low temperature seal is poor; Rebound resilience is poor; Be easy to separate out and pollute; Environment friendly is poor.But and requirement of large refrigerator market energy-conservation due to household electrical appliances, the PVC of lower temperature resistance difference is difficult to meet the demands really, therefore Haier, U.S. water chestnut, newly fly, the equal input research thermoplastic elastic body sealing strip of the refrigerator main engine plants such as Hisense, attempt to use thermoplastic elastomer to replace traditional PVC, but the thermoplastic elastomer article's welding strength at present on refrigerator sealed strip market is poor, be difficult to meet the requirement that customer requirement leg pulling force is greater than 80N, and leg welding speed is slow, working (machining) efficiency is low, although exploration has for many years been done in this field by partial elastic body producer, if Chinese patent literature number is CN101983984A, patent name is " a kind of elastic body material for refrigerator sealing strips and preparation method ", its welding pulling force is 51, be difficult to meet market demand, the elastomer material of other manufacturer production of major part is difficult to the needs meeting client's batch production, therefore, thermoplastic elastomer is restricted in the popularization in refrigerator sealed strip market.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, a kind of high welding strength refrigerator sealed strip thermoplastic elastic material and preparation method thereof is provided, instant invention overcomes conventional styrene analog thermoplastic elastomer material and be not easy to the extruding thin-walled product of fast and stable, the problems such as goods welding speed is slow, welding strength is poor, make thermoplastic elastic material become possibility in the large-scale application of refrigerator sealing industry.
One provided by the invention high welding strength refrigerator sealed strip thermoplastic elastic material, it is made up of by weight following component:
Hydrogenated styrene elastomerics 10-20 part, white oil 10-30 part, polypropylene 1-4 part, olefin type elastomer POE 2-6 part, metallocene PE 1-6 part, polypropylene alloy modifier 2-5 part, mineral substance powder 3-8 part, stablizer 0.4-1.2 part, first above-mentioned hydrogenated styrene elastomerics is mixed with white oil, again by itself and all the other material mixing, be placed in twin screw extruder, through melt extruding, granulation forms.
Above-mentioned white oil is that viscosity is paraffin oil or the naphthenic oil of 60-120 mm2 s at 40 DEG C, or the mixture of paraffin oil and naphthenic oil.
Above-mentioned polypropylene melt index is homo-polypropylene or the Co-polypropylene of 1-3g/10min, or the mixture of homo-polypropylene and Co-polypropylene.
Above-mentioned olefin type elastomer POE is ethene-octene copolymer or ethene-butylene copolymer, or the mixture of ethene-octene copolymer and ethene-butylene copolymer.
The low melt index metallocene PE of above-mentioned metallocene PE to be melting index be 0.5-1.5g/10min, or melting index is the metallocene PE of the middle melting index of 8-15g/10min, or both mixtures.
Above-mentioned mineral substance powder is calcium carbonate or talcum powder or strong prestige powder, or the mixture of above two or three.
Above-mentioned stablizer comprises primary antioxidant and auxiliary antioxidant, wherein primary antioxidant is hindered phenol or sulphur ester antioxidant, include but not limited to 1010, one or more composition in DSTP, wherein, the chemical name of 1010 is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester, and the chemical name of DSTP is the stearic alcohol ester of thio-2 acid;
Auxiliary antioxidant is phosphorous acid ester or ester kind antioxidant, include but not limited to one or more the composition in 168,618, wherein, the chemical name of 168 is tricresyl phosphite (2,4-di-tert-butyl) ester, the chemical name of 618 is distearyl pentaerythritol diphosphite.
The preparation method of the high welding strength refrigerator sealed strip thermoplastic elastic material that the present invention mentions, it comprises the following steps:
(1) raw material is taken by above-mentioned weight proportion;
(2) hydrogenated styrene elastomerics and white oil are mixed 20-30 minute in low rate mixing machine, be then mixed together 20-30 minute with other material auxiliary agent, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding;
(3) wherein temperature is in barrel: a district 170-180 DEG C, two district 180-190 DEG C, three district 180-190 DEG C, four district 180-190 DEG C, five district 180-190 DEG C, six district 180-190 DEG C, seven district 180-190 DEG C, eight district 180-190 DEG C, head 180-190 DEG C, twin screw extruder rotating speed is 300-800 rev/min.
The invention has the beneficial effects as follows: owing to have employed hydrogenated polystyrene, therefore, inherently solve refrigerator sealed strip low temperature seal problem in actual use; Add white oil and polypropylene, give the processing characteristics that material is basic; Add olefin type elastomer, the melt property of body series can be improved, improve refrigerator sealed strip and extrude working (machining) efficiency, improve the fine and smooth degree in the surface of extruding sealed strip; Add the tensile strength that metallocene PE can improve material, improve leg pulling force simultaneously; Add Tai Rui peak, Shandong novel material company limited to produce polypropylene alloy modifier and can shorten weld interval, improve welding efficiency, can welding strength be improved simultaneously; Instant invention overcomes conventional styrene analog thermoplastic elastomer material welding strength poor, the problems such as goods welding speed is slow, the present invention makes thermoplastic elastic material become possibility in the large-scale application of refrigerator sealing industry.
Embodiment
Embodiment 1: the high welding strength refrigerator sealed strip thermoplastic elastic material that the present invention mentions, take 10 parts, hydrogenated styrene elastomerics, white oil 10 parts, polypropylene 1 part by weight, olefin type elastomer POE 2 parts, metallocene PE 1 part, polypropylene alloy modifier 2 parts, 3 parts, mineral substance powder, stablizer 0.4 part.
Described polypropylene melt index is the homo-polypropylene of 1-3g/10min, olefin type elastomer POE is ethene-octene copolymer, metallocene PE melting index is the low melt index metallocene PE of 0.5-1.5g/10min, polypropylene alloy modifier is the model of Shandong Tai Ruifeng novel material company limited is the modified product of TF45D, this product is high fluent material, melting index controls at 60 ± 10g/10min, and described mineral substance powder is calcium carbonate;
Described stablizer comprises primary antioxidant and auxiliary antioxidant, and wherein primary antioxidant is 1010, and chemical name is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester; Auxiliary antioxidant is 168, and chemical name is tricresyl phosphite (2,4-di-tert-butyl) ester);
Hydrogenated styrene elastomerics and white oil are mixed 20-30 minute in low rate mixing machine, is then mixed together 20-30 minute with other material auxiliary agent, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding.Wherein in barrel, temperature is: a district 170-180 DEG C, two district 180-190 DEG C, three district 180-190 DEG C, four district 180-190 DEG C, five district 180-190 DEG C, six district 180-190 DEG C, seven district 180-190 DEG C, eight district 180-190 DEG C, head 180-190 DEG C, twin screw extruder rotating speed is 100-400 rev/min.
Embodiment 2: the high welding strength refrigerator sealed strip thermoplastic elastic material that the present invention mentions, take 20 parts, hydrogenated styrene elastomerics, white oil 30 parts, polypropylene 4 parts by weight, olefin type elastomer POE 6 parts, metallocene PE 6 parts, polypropylene alloy modifier 5 parts, 8 parts, mineral substance powder, stablizer 1.2 parts.
Described polypropylene melt index is the Co-polypropylene of 1-3g/10min, olefin type elastomer POE is ethene-butylene copolymer, the metallocene PE of metallocene PE to be melting index the be middle melting index of 8-15g/10min, polypropylene alloy modifier is the model of Shandong Tai Ruifeng novel material company limited is the modified product of TF45D, this product is high fluent material, melting index controls at 60 ± 10g/10min, and described mineral substance powder is talcum powder
Described stablizer comprises primary antioxidant and auxiliary antioxidant, and wherein primary antioxidant is DSTP, and chemical name is the stearic alcohol ester of thio-2 acid, and auxiliary antioxidant is 618, and chemical name is distearyl pentaerythritol diphosphite;
Hydrogenated styrene elastomerics and white oil are mixed 20-30 minute in low rate mixing machine, is then mixed together 20-30 minute with other material auxiliary agent, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding.Wherein in barrel, temperature is: a district 170-180 DEG C, two district 180-190 DEG C, three district 180-190 DEG C, four district 180-190 DEG C, five district 180-190 DEG C, six district 180-190 DEG C, seven district 180-190 DEG C, eight district 180-190 DEG C, head 180-190 DEG C, twin screw extruder rotating speed is 100-400 rev/min.
Embodiment 3: the high welding strength refrigerator sealed strip thermoplastic elastic material that the present invention mentions, take by weight and take 15 parts, hydrogenated styrene elastomerics, white oil 18 parts, polypropylene 3 parts by weight, olefin type elastomer POE 2 parts, metallocene PE 5 parts, polypropylene alloy modifier 5 parts, 7 parts, mineral substance powder, stablizer 1.1 parts.
Described polypropylene melt index is the Co-polypropylene of 1-3g/10min, olefin type elastomer POE is ethene-butylene copolymer, the metallocene PE of metallocene PE to be melting index the be middle melting index of 8-15g/10min, polypropylene alloy modifier is the model of Shandong Tai Ruifeng novel material company limited is the modified product of TF45D, this product is high fluent material, and melting index controls at 60 ± 10g/10min; Described mineral substance powder is strong prestige powder;
Described stablizer comprises primary antioxidant and auxiliary antioxidant, and wherein primary antioxidant is DSTP, and chemical name is the stearic alcohol ester of thio-2 acid, and auxiliary antioxidant is 618, and chemical name is distearyl pentaerythritol diphosphite;
Hydrogenated styrene elastomerics and white oil are mixed 20-30 minute in low rate mixing machine, is then mixed together 20-30 minute with other material auxiliary agent, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding.Wherein in barrel, temperature is: a district 170-180 DEG C, two district 180-190 DEG C, three district 180-190 DEG C, four district 180-190 DEG C, five district 180-190 DEG C, six district 180-190 DEG C, seven district 180-190 DEG C, eight district 180-190 DEG C, head 180-190 DEG C, twin screw extruder rotating speed is 100-400 rev/min.
As can be seen from test result, the present invention does that refrigerator sealed strip fillet weld strength is high, and product strength is high, and weld cycle is short, and welding efficiency is high.
Claims (8)
1. a high welding strength refrigerator sealed strip thermoplastic elastic material, is characterized in that: it is made up of by weight following component:
Hydrogenated styrene elastomerics 10-20 part, white oil 10-30 part, polypropylene 1-4 part, olefin type elastomer POE 2-6 part, metallocene PE 1-6 part, polypropylene alloy modifier 2-5 part, mineral substance powder 3-8 part, stablizer 0.4-1.2 part, first above-mentioned hydrogenated styrene elastomerics is mixed with white oil, again by itself and all the other material mixing, be placed in twin screw extruder, through melt extruding, granulation forms.
2. high welding strength refrigerator sealed strip thermoplastic elastic material according to claim 1, is characterized in that: described white oil is that viscosity is paraffin oil or the naphthenic oil of 60-120 mm2 s at 40 DEG C, or the mixture of paraffin oil and naphthenic oil.
3. high welding strength refrigerator sealed strip thermoplastic elastic material according to claim 1, is characterized in that: described polypropylene melt index is homo-polypropylene or the Co-polypropylene of 1-3g/10min.
4. high welding strength refrigerator sealed strip thermoplastic elastic material according to claim 1, is characterized in that: described olefin type elastomer POE is ethene-octene copolymer or ethene-butylene copolymer.
5. high welding strength refrigerator sealed strip thermoplastic elastic material according to claim 1, it is characterized in that: the low melt index metallocene PE of described metallocene PE to be melting index be 0.5-1.5g/10min, or melting index is the metallocene PE of the middle melting index of 8-15g/10min.
6. high welding strength refrigerator sealed strip thermoplastic elastic material according to claim 1, is characterized in that: described mineral substance powder is calcium carbonate or talcum powder or strong prestige powder.
7. high welding strength refrigerator sealed strip thermoplastic elastic material according to claim 1, it is characterized in that: described stablizer comprises primary antioxidant and auxiliary antioxidant, wherein primary antioxidant is hindered phenol or sulphur ester antioxidant, include but not limited to 1010, one or more composition in DSTP, wherein, the chemical name of 1010 is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester, the chemical name of DSTP is the stearic alcohol ester of thio-2 acid;
Auxiliary antioxidant is phosphorous acid ester or ester kind antioxidant, include but not limited to one or more the composition in 168,618, wherein, the chemical name of 168 is tricresyl phosphite (2,4-di-tert-butyl) ester, the chemical name of 618 is distearyl pentaerythritol diphosphite.
8., as a preparation method for the high welding strength refrigerator sealed strip thermoplastic elastic material in claim 1-7 as described in any one, it is characterized in that: it comprises the following steps:
(1) raw material is taken by above-mentioned weight proportion;
(2) hydrogenated styrene elastomerics and white oil are mixed 20-30 minute in low rate mixing machine, be then mixed together 20-30 minute with other material auxiliary agent, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding;
(3) wherein temperature is in barrel: a district 170-180 DEG C, two district 180-190 DEG C, three district 180-190 DEG C, four district 180-190 DEG C, five district 180-190 DEG C, six district 180-190 DEG C, seven district 180-190 DEG C, eight district 180-190 DEG C, head 180-190 DEG C, twin screw extruder rotating speed is 300-800 rev/min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106589762A (en) * | 2016-12-19 | 2017-04-26 | 青岛新材料科技工业园发展有限公司 | Thermoplastic elastomer door seal easy to weld and preparation method thereof |
| CN106700384A (en) * | 2016-12-30 | 2017-05-24 | 慈溪市山今高分子塑料有限公司 | TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and preparation process of TPE material |
| CN109867901A (en) * | 2019-03-26 | 2019-06-11 | 奥世达弹性体(深圳)有限公司 | A kind of high-intensity sealing thermoplastic elastomer (TPE) and preparation method thereof |
| CN111909471A (en) * | 2020-07-07 | 2020-11-10 | 广东顺德安和密封新材料科技有限公司 | Polyvinyl chloride sealing strip for refrigerator and preparation method thereof |
| WO2022135516A1 (en) * | 2020-12-25 | 2022-06-30 | 广东美的白色家电技术创新中心有限公司 | Sealing material and preparation method therefor, and sealing strip |
| CN114940830A (en) * | 2022-01-04 | 2022-08-26 | 浙江金仪盛世生物工程有限公司 | Thermoplastic elastomer material and thermoplastic elastomer pipeline |
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| EP1674530A1 (en) * | 2004-12-24 | 2006-06-28 | Kraton Polymers Research B.V. | High melt strength thermoplastic elastomer composition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589762A (en) * | 2016-12-19 | 2017-04-26 | 青岛新材料科技工业园发展有限公司 | Thermoplastic elastomer door seal easy to weld and preparation method thereof |
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| CN106700384A (en) * | 2016-12-30 | 2017-05-24 | 慈溪市山今高分子塑料有限公司 | TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and preparation process of TPE material |
| CN109867901A (en) * | 2019-03-26 | 2019-06-11 | 奥世达弹性体(深圳)有限公司 | A kind of high-intensity sealing thermoplastic elastomer (TPE) and preparation method thereof |
| CN111909471A (en) * | 2020-07-07 | 2020-11-10 | 广东顺德安和密封新材料科技有限公司 | Polyvinyl chloride sealing strip for refrigerator and preparation method thereof |
| CN111909471B (en) * | 2020-07-07 | 2022-05-10 | 广东顺德安和密封新材料科技有限公司 | Polyvinyl chloride sealing strip for refrigerator and preparation method thereof |
| WO2022135516A1 (en) * | 2020-12-25 | 2022-06-30 | 广东美的白色家电技术创新中心有限公司 | Sealing material and preparation method therefor, and sealing strip |
| CN114940830A (en) * | 2022-01-04 | 2022-08-26 | 浙江金仪盛世生物工程有限公司 | Thermoplastic elastomer material and thermoplastic elastomer pipeline |
| CN114940830B (en) * | 2022-01-04 | 2023-03-28 | 浙江金仪盛世生物工程有限公司 | Thermoplastic elastomer material and thermoplastic elastomer pipeline |
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Effective date of registration: 20170418 Address after: 251100 Qihe County, Shandong Province, the development zone of the road through the seven weft road Qilu science and technology incubator Patentee after: SHANDONG TAIRUIFENG NEW MATERIAL CO., LTD. Address before: 266580 Qingdao economic and Technological Development Zone, Changjiang Road, No. 66, Shandong Patentee before: China Petroleum University (East China) |
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