CN102936384A - Polyvinyl chloride (PVC) magnetic-plastic blending door gasket and manufacture method thereof - Google Patents
Polyvinyl chloride (PVC) magnetic-plastic blending door gasket and manufacture method thereof Download PDFInfo
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- CN102936384A CN102936384A CN2012104406208A CN201210440620A CN102936384A CN 102936384 A CN102936384 A CN 102936384A CN 2012104406208 A CN2012104406208 A CN 2012104406208A CN 201210440620 A CN201210440620 A CN 201210440620A CN 102936384 A CN102936384 A CN 102936384A
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Abstract
The invention provides a polyvinyl chloride (PVC) magnetic-plastic blending door gasket and a manufacture method thereof. The PVC magnetic-plastic blending door gasket is obtained by joint extrusion molding of PVC equal heat plasticity plastic and magnetic powder, processing steps of a magnetic stripe and processing steps that the magnetic stripe is inserted in a door gasket rubber sleeve are reduced, manufacturing processes of the magnetic door gasket are effectively shortened, processing time is saved, labor and material cost are reduced, work efficiency is greatly improved, and simultaneously an adsorptive property of the door gasket is improved.
Description
Technical field
The invention belongs to the magnetic door seal technical field that the electrical equipment such as refrigerator, refrigerator are used, be specifically related to a PVC magnetic and mould blend gasket and preparation method thereof.
Technical background
Because the convenient double requirements of opening of sealing, magnetic door seal all will be used in the opening and closing place of the door such as refrigerator, refrigerator, its gasket major part is to extrude first the door seal gum cover with the nontoxic flexible PVC of modification, penetrating magnetic stripe after the moulding in the magnetic stripe air bag of door seal gum cover consists of, its effect is sealed container door, makes in the case isolated with external environment.
Existing gasket is to be made of PVC door seal gum cover and magnetic stripe two sections of material, and its this manufacturing processed also needed for minutes three steps just can finish, and prepared respectively before this door seal gum cover and magnetic stripe, magnetic stripe is penetrated at last in the magnetic stripe air bag of door seal gum cover to carry out welding fabrication again.So its production stage is many, long flow path, increased equipment and cost of labor and dropped into, increase energy consumption; Also be unfavorable for simultaneously production management.When wearing magnetic stripe, can have the phenomenon that magnetic stripe is too short or magnetic stripe is long in addition, magnetic stripe and door seal gum cover are mismatched, affect quality and the result of use of gasket, thereby cause waste of material, cost increases.
Summary of the invention
The present invention is directed to problems of the prior art, provide a kind of for the one-time formed magnetic door seal on the refrigeration equipments such as refrigerator, refrigerator.Another object of the present invention provides the preparation method of above-mentioned magnetic door seal.
In order to achieve the above object, the present invention realizes by following technical proposal:
A kind of PVC magnetic is moulded the blend gasket, and described PVC magnetic is moulded the blend gasket and is comprised of by weight following component:
PVC 68-75 part;
CPE 25-32 part;
Environment-friendly plasticizer 30-38 part;
Magnetic 55-70 part;
Stablizer 3.5-5 part;
Dispersion agent 0.6-0.8 part;
Weighting agent 5-15 part.
Described PVC magnetic is moulded and is also contained an amount of pigment in the blend gasket.
Described pigment can be selected from mineral dye and pigment dyestuff, such as transparent yellow, phthalocyanine blue, titanium dioxide, carbon black, ultramarine etc.
Described environment-friendly plasticizer is at least a in inclined to one side benzoic ether (TOTM), hexanodioic acid two sad (being DOA), adipic acid ester kind polyester, citric acid ester type or the epoxies.
Described stablizer is Ca/Zn one package stabilizer, four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) at least a in the two stearyl alcohol esters (DSTDP) of pentaerythritol ester (1010), three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (168), thio-2 acid.
Described dispersion agent is silicates, alkali metal phosphate class, triethyl hexyl phosphoric acid or sodium lauryl sulphate.
The CPE(chlorinatedpolyethylene) be saturated macromolecular material, outward appearance is white powder, and is nonpoisonous and tasteless, has good toughness, weather resisteant, anti-ozone, chemical-resistant resistance and ageing-resistant performance, has good oil-proofness, flame retardant resistance, tint permanence and high filling properties.
A kind ofly prepare the method that above-mentioned PVC magnetic is moulded the blend gasket, may further comprise the steps:
(1) with raw material by its weight part weigh mix after, through the oil-filled 12-18 of high-speed kneading minute, then unload material and put in the cold mixed pot and stirred 10-20 minute; At last material is dropped into the twin screw extruder granulation of L/D 〉=24, make PVC magnetic and mould the blend pellet;
(2) the PVC magnetic of (1) preparation is moulded the blend pellet, extrude door seal gum cover, cooling and shaping by single-screw machine;
(3) door seal gum cover in (2) is added magnetic, magnetic is aligns;
(4) the door seal gum cover that adds behind the magnetic is cut and 45 degree corner cuts, deposit at least 12h after, mould the blend gasket through melting solder or the bonding PVC of making magnetic again.
The preferred version of such scheme is that mediating oil-filled temperature in the described step (1) is 70-120 ℃; Prilling temperature is 130-150 ℃.
Adding magnetic in the described step (3) is that voltage adds magnetic or magnetic field adds magnetic.
The present invention joins magnetic in the preparation door seal gum cover plastics and heats together coextrusion mold, has reduced the procedure of processing of magnetic stripe and the procedure of processing that penetrates magnetic stripe in the door seal gum cover; Owing to containing magnetic in the door seal gum cover of extruding, magnetic is align and has certain magnetic through adding magnetic, make gasket can be pull-in on well the opening and closing place of refrigerator or refrigerator door, make it be difficult for landing.
So the present invention has following beneficial effect:
1, the present invention joins magnetic in the preparation door seal gum cover plastics and heats together coextrusion mold, has reduced the procedure of processing of magnetic stripe and the procedure of processing that penetrates magnetic stripe in the door seal gum cover; Effectively shortened the manufacturing flow process of magnetic door seal, thereby provided a great convenience to production management;
2, by magnetic with make door seal become as a whole with magnetic stripe after plastic blend is extruded, thereby stopped the phenomenons such as the long quality that affects gasket of or magnetic stripe too short because of magnetic stripe and product waste;
3, save process period, reduced artificial and material cost, and greatly improved productivity.
Embodiment:
The below provides embodiment so that the present invention is carried out concrete description; be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, content still belongs to protection scope of the present invention to some nonessential improvement and the adjustment that the present invention makes to the person skilled in the art in this field according to the present invention.
All raw materials of the present invention such as pigment phthalocyanine green, phthalocyanine blue, titanium dioxide, carbon black, ultramarine etc.; Environment-friendly plasticizer is inclined to one side benzoic ether (TOTM), hexanodioic acid two sad (being DOA), adipic acid ester kind polyester, citric acid ester type or epoxies; Stablizer is Ca/Zn one package stabilizer, four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester (1010), three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (168), the two stearyl alcohol esters (DSTDP) of thio-2 acid; Dispersion agent is silicates, alkali metal phosphate class, triethyl hexyl phosphoric acid or sodium lauryl sulphate, and these raw materials are known, can buy in market.
Embodiment 1
Take by weighing respectively PVC and be 68 parts, CPE and be 32 parts, 30 parts of environment-friendly plasticizers, 70 parts of magnetics, 4.5 parts of stablizers, 0.75 part of dispersion agent, CaCO
3Be after 2 parts of 5 parts, pigment mix, then to carry out high-speed mixing after oil-filled 12 minutes at 70 ℃, unload material and put in the cold mixed pot and stirred 15 minutes; At last material is dropped into the twin screw extruder granulation of L/D 〉=24, prilling temperature is 130-150 ℃, makes PVC magnetic and moulds the blend pellet; Extrude the door seal gum cover by single-screw machine again, behind the cooling and shaping it is carried out voltage and add magnetic, door seal gum cover magnetic in passing electroplax is formed align and show magnetic; At last the door seal gum cover that adds behind the magnetic is cut and 45 degree corner cuts, deposit at least 12h after, mould the blend gasket through melting solder or the bonding PVC of making magnetic again.
PVC 68-75 part;
CPE 25-32 part;
Environment-friendly plasticizer 30-38 part;
Magnetic 55-70 part;
Stablizer 3.5-5 part;
Dispersion agent 0.6-0.8 part;
Weighting agent 5-15 part.
Embodiment 2
After taking by weighing respectively PVC and be 71 parts, CPE and be 28 parts, 35 parts of environment-friendly plasticizers, 62 parts of magnetics, 4 parts of stablizers, 0.6 part of dispersion agent, hydrotalcite and be 2.2 parts of 10 parts, pigment and mixing, then carry out high-speed mixing after oil-filled 20 minutes at 120 ℃, unload material and put in the cold mixed pot and stirred 15 minutes; At last material is dropped into the twin screw extruder granulation of L/D 〉=24, prilling temperature is 130-150 ℃, makes PVC magnetic and moulds the blend pellet; Extrude the door seal gum cover by single-screw machine again, behind the cooling and shaping it is carried out voltage and add magnetic, door seal gum cover magnetic in passing electroplax is formed align and show magnetic; At last the door seal gum cover that adds behind the magnetic is cut and 45 degree corner cuts, deposit 15h after, mould the blend gasket through melting solder or the bonding PVC of making magnetic again.
Embodiment 3
Take by weighing respectively PVC and be 75 parts, CPE and be 25 parts, 38 parts of environment-friendly plasticizers, 55 parts of magnetics, 3.5 parts of stablizers, 0.8 part of dispersion agent, CaCO
3Be after 2.5 parts of 15 parts, pigment mix, then to carry out high-speed mixing after oil-filled 18 minutes at 100 ℃, unload material and put in the cold mixed pot and stirred 15 minutes; At last material is dropped into the twin screw extruder granulation of L/D 〉=24, prilling temperature is 130-150 ℃, makes PVC magnetic and moulds the blend pellet; Extrude the door seal gum cover by single-screw machine again, behind the cooling and shaping it is carried out magnetic field and add magnetic, door seal gum cover magnetic in passing magnetic field is formed align and show magnetic; At last the door seal gum cover that adds behind the magnetic is cut and 45 degree corner cuts, deposit at least 12h after, mould the blend gasket through melting solder or the bonding PVC of making magnetic again.
The TPV material magnetic gasket that above-described embodiment 1-3 makes is measured its density, melt flow rate (MFR), tensile strength, elongation at break and hardness respectively according to industry examination criteria, and its test data is as shown in the table:
Table: the performance test results of gasket among the embodiment 1-3
Data can be found out from upper table, the present invention be by magnetic is joined carry out the blend granulation in the polyvinyl chloride resin after, make the door of refrigerator strip of paper used for sealing through extrusion moulding again, its melt flow rate (MFR), tensile strength, elongation at break and hardness all meet the requirement of correlation detection standard.Because the change of the mode of production causes the density of the traditional resin gate sealing cover of the density ratio of the gasket that the present invention produces to want large, sealing property and time limit of service to refrigerator etc. have been improved.Do not affect under the prerequisite of seal strip for refrigerator door absorption property as far as possible, effectively shortened the manufacturing flow process of magnetic door seal, save process period, reduce artificial and material cost, and greatly improved productivity.The present invention has also improved its sealing property to refrigerator, refrigerator etc., reduces energy consumption.
Claims (9)
1. a PVC magnetic is moulded the blend gasket, it is characterized in that: described PVC magnetic is moulded the blend gasket and is comprised of by weight following component:
PVC 68-75 part;
CPE 25-32 part;
Environment-friendly plasticizer 30-38 part;
Magnetic 55-70 part;
Stablizer 3.5-5 part;
Dispersion agent 0.6-0.8 part;
Weighting agent 5-15 part.
2. a kind of PVC magnetic according to claim 1 is moulded the blend gasket, it is characterized in that: described PVC magnetic is moulded and is also contained an amount of pigment in the blend gasket.
3. a kind of PVC magnetic according to claim 1 is moulded the blend gasket, it is characterized in that: described environment-friendly plasticizer is at least a in inclined to one side benzoic ether (TOTM), hexanodioic acid two sad (being DOA), adipic acid ester kind polyester, citric acid ester type or the epoxies.
4. a kind of PVC magnetic according to claim 1 is moulded the blend gasket, it is characterized in that: described stablizer is Ca/Zn one package stabilizer, four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) at least a in the two stearyl alcohol esters (DSTDP) of pentaerythritol ester (1010), three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (168), thio-2 acid.
5. a kind of PVC magnetic according to claim 1 is moulded the blend gasket, it is characterized in that: described dispersion agent is silicates, alkali metal phosphate class, triethyl hexyl phosphoric acid or sodium lauryl sulphate.
6. a kind of PVC magnetic according to claim 1 is moulded the blend gasket, it is characterized in that: described weighting agent is calcium carbonate or hydrotalcite etc.
7. one kind prepares the method that a kind of PVC magnetic is as claimed in claim 1 moulded the blend gasket, it is characterized in that: may further comprise the steps:
(1) with raw material by its weight part weigh mix after, through the oil-filled 12-18 of high-speed kneading minute, then unload material and put in the cold mixed pot and stirred 10-20 minute; At last material is dropped into the twin screw extruder granulation of L/D 〉=24, make PVC magnetic and mould the blend pellet;
(2) the PVC magnetic of (1) preparation is moulded the blend pellet, extrude door seal gum cover, cooling and shaping by single-screw machine;
(3) door seal gum cover in (2) is added magnetic, magnetic is aligns;
(4) the door seal gum cover that adds behind the magnetic is cut and 45 degree corner cuts, deposit at least 12h after, mould the blend gasket through melting solder or the bonding PVC of making magnetic again.
8. method according to claim 7 is characterized in that: mediating oil-filled temperature in the described step (1) is 70-120 ℃; Prilling temperature is 130-150 ℃.
9. method according to claim 7, it is characterized in that: adding magnetic in the described step (3) is that electric field adds magnetic or magnetic field adds magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440620.8A CN102936384B (en) | 2012-11-07 | 2012-11-07 | Polyvinyl chloride (PVC) magnetic-plastic blending door gasket and manufacture method thereof |
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| CN201210440620.8A CN102936384B (en) | 2012-11-07 | 2012-11-07 | Polyvinyl chloride (PVC) magnetic-plastic blending door gasket and manufacture method thereof |
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| CN102936384A true CN102936384A (en) | 2013-02-20 |
| CN102936384B CN102936384B (en) | 2015-02-25 |
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Cited By (8)
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| CN104231486A (en) * | 2014-09-25 | 2014-12-24 | 辽宁程威塑料型材有限公司 | Production method for energy-saving plastic door window sectional material |
| CN105017690A (en) * | 2015-08-21 | 2015-11-04 | 苏州新区特氟龙塑料制品厂 | High-performance modified PVC (polyvinyl chloride) for cable |
| CN106810788A (en) * | 2016-12-21 | 2017-06-09 | 马鞍山瑞美塑业有限公司 | A kind of door of refrigerator sealing set |
| CN108342025A (en) * | 2017-01-22 | 2018-07-31 | 青岛科技大学 | A kind of doors and windows sealing bar composition and preparation method thereof |
| US20180306488A1 (en) * | 2017-04-19 | 2018-10-25 | Criser, S.A. De C.V. | Process for the manufacture of a sealing gasket for a refrigerator |
| CN108987028A (en) * | 2017-06-03 | 2018-12-11 | 安徽邦瑞新材料科技有限公司 | A kind of door seal magnetic stripe and preparation method thereof based on environment-friendly plasticizer HM828 |
| CN109883114A (en) * | 2019-03-25 | 2019-06-14 | 合肥华凌股份有限公司 | Refrigeration equipment |
| CN112175308A (en) * | 2020-11-09 | 2021-01-05 | 横店集团东磁股份有限公司 | Rubber magnetic particle material for injection molding and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231486A (en) * | 2014-09-25 | 2014-12-24 | 辽宁程威塑料型材有限公司 | Production method for energy-saving plastic door window sectional material |
| CN105017690A (en) * | 2015-08-21 | 2015-11-04 | 苏州新区特氟龙塑料制品厂 | High-performance modified PVC (polyvinyl chloride) for cable |
| CN106810788A (en) * | 2016-12-21 | 2017-06-09 | 马鞍山瑞美塑业有限公司 | A kind of door of refrigerator sealing set |
| CN108342025A (en) * | 2017-01-22 | 2018-07-31 | 青岛科技大学 | A kind of doors and windows sealing bar composition and preparation method thereof |
| CN108342025B (en) * | 2017-01-22 | 2020-09-04 | 青岛科技大学 | Door and window sealing strip composition and preparation method thereof |
| US20180306488A1 (en) * | 2017-04-19 | 2018-10-25 | Criser, S.A. De C.V. | Process for the manufacture of a sealing gasket for a refrigerator |
| CN108987028A (en) * | 2017-06-03 | 2018-12-11 | 安徽邦瑞新材料科技有限公司 | A kind of door seal magnetic stripe and preparation method thereof based on environment-friendly plasticizer HM828 |
| CN108987028B (en) * | 2017-06-03 | 2020-07-28 | 安徽邦瑞新材料科技有限公司 | Door seal magnetic strip based on environment-friendly plasticizer HM828 and preparation method thereof |
| CN109883114A (en) * | 2019-03-25 | 2019-06-14 | 合肥华凌股份有限公司 | Refrigeration equipment |
| CN112175308A (en) * | 2020-11-09 | 2021-01-05 | 横店集团东磁股份有限公司 | Rubber magnetic particle material for injection molding and preparation method thereof |
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| CN102936384B (en) | 2015-02-25 |
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Address after: 230601 Hefei economic and Technological Development Zone, Anhui, Tang Road, No. 678 Patentee after: Anhui Langevin magneto Limited by Share Ltd Address before: 230601 Hefei economic and Technological Development Zone, Anhui, Tang Road, No. 678 Patentee before: Anhui Higasket Plastics Group Co., Ltd. |