CN103087446B - Gasket and preparation method thereof, refrigeration equipment - Google Patents
Gasket and preparation method thereof, refrigeration equipment Download PDFInfo
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- CN103087446B CN103087446B CN201310036290.0A CN201310036290A CN103087446B CN 103087446 B CN103087446 B CN 103087446B CN 201310036290 A CN201310036290 A CN 201310036290A CN 103087446 B CN103087446 B CN 103087446B
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Abstract
The invention discloses a kind of gasket and preparation method thereof, refrigeration equipment.Wherein, gasket comprises: the polyvinyl chloride resin of 35 ~ 50 weight parts; The elastomerics of 5 ~ 15 weight parts; The softening agent of 20 ~ 40 weight parts; The mineral filler of 0-20 weight part; The thermo-stabilizer of 1 ~ 3 weight part; The lubricant of 0.5 ~ 2 weight part; And 0.1 ~ 2 parts by weight of blowing agent.Gasket of the present invention has that fretting map structure, elasticity and toughness are better, transport property is low, not easily with the adhesion such as side plate, Men Ti, to advantages such as the corrodibility such as side plate, Men Ti are low.
Description
Technical field
The present invention relates to gasket and preparation method thereof, refrigeration equipment.
Background technology
In prior art, the gasket of refrigeration equipment is without foaming, and shortage should be flexible, and elasticity is subject to influence of temperature change.In addition, door seal is easily moved, and often causes the adhesion of gasket and side plate, door body, and door seal can to corrosion side plate and door body, and serious even can cause cracking.
Therefore, current gasket still haves much room for improvement.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, in one aspect of the invention, the present invention proposes a kind of gasket.According to embodiments of the invention, this gasket comprises: the polyvinyl chloride resin of 35 ~ 50 weight parts; The elastomerics of 5 ~ 15 weight parts; The softening agent of 20 ~ 40 weight parts; The mineral filler of 0-20 weight part; The thermo-stabilizer of 1 ~ 3 weight part; The lubricant of 0.5 ~ 2 weight part; And 0.1 ~ 2 whipping agent of weight part.Thus, according to the gasket of the embodiment of the present invention, have that fretting map structure, elasticity and toughness are better, transport property is low, not easily with the adhesion such as side plate, Men Ti, to advantages such as the corrodibility such as side plate, Men Ti are low, reduce door seal and inner bag, side plate interaction time frictional force, extend the work-ing life of gasket.Meanwhile, fretting map structure door seal internal stress is little, and shaping efficiency is high, under maximization keeps the original mechanical property prerequisite of goods, promotes the quality of goods and reduces costs.
According to some embodiments of the present invention, above-mentioned gasket can also have following additional technical feature:
According to one embodiment of present invention, described polyvinyl chloride resin is PVCSGI-III type, described elastomerics is for being selected from butyronitrile, the at least one of EVA and E-VA-CC, described softening agent is polyester softening agent and/or TOTM, described mineral filler is for being selected from calcium carbonate, the at least one of red soil and mica, described thermo-stabilizer is for being selected from organotin, antimony, calcium-zinc, rare earth, hydrotalcite, the at least one of metallic soap, described lubricant is for being selected from lipid acid, ester, the at least one of salt and wax, or described whipping agent is AC whipping agent, the at least one of OBSH whipping agent and H whipping agent.Thus, it is good that gasket has cold property, embrittlement temperature can reduce to-70 DEG C, extend the work-ing life of gasket at cold condition, and the advantages such as gasket feel is good, thermal and insulating performance good, the wear-resisting anti-deformation increase of door seal, further increase the product flavor quality of door seal.
In another aspect of the present invention, the present invention proposes a kind of method preparing gasket.According to embodiments of the invention, the method comprises: by polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing, obtain gasket raw mixture; Described gasket raw mixture is carried out extrusion moulding and finishing, to obtain described gasket, wherein, described extrusion temperature is 135 ~ 165 DEG C, and the consumption of described polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent is: the polyvinyl chloride resin of 35 ~ 50 weight parts; The elastomerics of 5 ~ 15 weight parts; The softening agent of 20 ~ 40 weight parts; The mineral filler of 0 ~ 20 weight part; The thermo-stabilizer of 1 ~ 3 weight part; The lubricant of 0.5 ~ 2 weight part; And 0.1 ~ 2 whipping agent of weight part.Thus, utilize the method preparing gasket according to the embodiment of the present invention, effectively can prepare gasket, and prepared gasket has snappiness, its permanent compression set >=75%, door seal creep resistance is good, heat-resisting, cold-resistant, and the anti-precipitation of softening agent, transport property are little, with the paint film such as side plate, Men Ti without adhesion, to advantages such as the no corrosions such as side plate, Men Ti, reduce door seal and inner bag, side plate interaction time frictional force, extend the work-ing life of gasket.Meanwhile, fretting map structure door seal internal stress is little, and shaping efficiency is high, under maximization keeps the original mechanical property prerequisite of goods, promotes the quality of goods and reduces costs.
According to some embodiments of the present invention, the above-mentioned method preparing gasket can also have following additional technical feature:
According to one embodiment of present invention, described polyvinyl chloride resin is PVCSGI-III type, described elastomerics is for being selected from butyronitrile, the at least one of EVA and E-VA-CC, described softening agent is polyester softening agent and/or TOTM, described mineral filler is for being selected from calcium carbonate, the at least one of red soil and mica, described thermo-stabilizer is for being selected from organotin, antimony, calcium-zinc, rare earth, hydrotalcite, the at least one of metallic soap, described lubricant is for being selected from lipid acid, ester, the at least one of salt and wax, or described whipping agent is AC whipping agent, the at least one of OBSH whipping agent and H whipping agent.Thus, it is good that gasket has cold property, embrittlement temperature can reduce to-70 DEG C, extend the work-ing life of gasket at cold condition, and the advantages such as gasket feel is good, thermal and insulating performance good, the wear-resisting anti-deformation increase of door seal, further increase the product flavor quality of door seal.
According to one embodiment of present invention, polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing are comprised further: by described polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing, and carry out granulation, wherein, the blowing temperature of described whipping agent is lower than prilling temperature.Thus, can granulation effectively, thus can be effectively used for preparing the gasket with fretting map structure further.In this granulation material, whipping agent mixes with door seal master batch, and the expansion density of gained fretting map door seal is comparatively even, cell size is comparatively consistent, and door seal over-all properties is higher.
According to one embodiment of present invention, described prilling temperature is 165 ~ 175 DEG C.Thus, effectively whipping agent master batch can be obtained.
According to one embodiment of present invention, polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing are comprised further: by polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, mix lubricant, and carry out granulation, to obtain masterbatch master batch; Described whipping agent is carried out granulation, to obtain whipping agent master batch; And described masterbatch master batch is mixed with described whipping agent master batch, obtain gasket raw mixture.Thus, the gasket with fretting map structure can effectively be prepared.Present method, to the very large design freedom of planner, according to concrete environment for use and can require the addition that carry out adjusting whipping agent, to reach the demand of different expansion density.
In another of the present invention, the present invention proposes one and prepare gasket.According to embodiments of the invention, this gasket is prepared from by the above-mentioned method preparing gasket.Thus, gasket has snappiness, its permanent compression set >=75%, and door seal creep resistance is good, heat-resisting, cold-resistant, and the anti-precipitation of softening agent, transport property are little, with the paint film such as side plate, Men Ti without adhesion, to advantages such as the no corrosions such as side plate, Men Ti.
In another aspect of the invention, the present invention proposes a kind of refrigeration equipment.According to embodiments of the invention, this refrigeration equipment comprises the gasket of the above embodiments.Thus, the gasket of equipment has snappiness, its permanent compression set >=75%, and door seal creep resistance is good, heat-resisting, cold-resistant, and the anti-precipitation of softening agent, transport property are little, with the paint film such as side plate, Men Ti without adhesion, to advantages such as the no corrosions such as side plate, Men Ti.
According to one embodiment of present invention, described refrigeration equipment is refrigerator or refrigerator-freezer.Thus, above-mentioned gasket can be applied on refrigerator or refrigerator-freezer.
Gasket and preparation method thereof can realize following advantages one of at least according to an embodiment of the invention:
1, according to gasket of the embodiment of the present invention and preparation method thereof, the gasket of the embodiment of the present invention has better thermal and insulating performance, can reduce refrigeration equipment energy expenditure 1 ~ 2%;
2, according to gasket of the embodiment of the present invention and preparation method thereof, the gasket of the embodiment of the present invention has higher rebound resilience, permanent compression set and creep resistance are improved significantly, and the bad problems such as strand limit, folding, fold, distortion not easily appear in the gasket of the embodiment of the present invention;
3, according to gasket of the embodiment of the present invention and preparation method thereof, the gasket of the embodiment of the present invention has better compensatory, can overcome refrigerating equipment door body, casing etc. and be out of shape the problems such as the laminating caused is bad, cold draining;
4, according to gasket of the embodiment of the present invention and preparation method thereof, the gasket of the embodiment of the present invention can reduce the suction-combining force of gasket magnetic stripe, optimizes or solve door seal to come off and the difficult problem such as not easily of opening the door;
5, according to gasket of the embodiment of the present invention and preparation method thereof, the gasket of the embodiment of the present invention can reduce gasket greatly to the burn into adhesion of refrigeration equipment casing, door courage and side plate, central sill etc. and cracking;
6, according to gasket of the embodiment of the present invention and preparation method thereof, cold-resistant, the thermotolerance of the gasket of the embodiment of the present invention are significantly improved;
7, according to gasket of the embodiment of the present invention and preparation method thereof, the gasket of the embodiment of the present invention can practical function, as mildew-resistant, antibacterial, anti-aging etc.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the process flow diagram of the preparation material grain of the method preparing gasket according to an embodiment of the invention;
Fig. 2 is the process flow diagram preparing gasket of the method preparing gasket according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " thickness ", " on ", the orientation of the instruction such as D score or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
The present invention completes based on the following discovery of contriver:
The present inventor finds, the gasket of prior art, analyze from the formula of preparation, its major defect to be adopted softening agent be general aromatic hydrocarbons is for esters of gallic acid, and such as DOP, DOTP etc. and ESO, do not use elastomerics and high molecular weight plasticizer, softening agent purity is not high, may contain more volatile part and easy migration impurity, filler component consumption is large, have even up to 25% ~ 30% or higher; Analyze from the structure of gasket, door seal wall body is solid.Therefore, gasket of the prior art also exists easy migration, and elasticity is not enough and elasticity is subject to influence of temperature change, in addition, door seal is easily moved, and often causes the adhesion of gasket and side plate, door body, door seal can to corrosion side plate and door body, and serious even can cause cracking etc.Based on above-mentioned discovery, the present invention is mainly from the preparation formula and the structure that change gasket in prior art, and the present inventor is surprised to find, and by technical scheme of the present invention, effectively can solve such as above-mentioned technical problem.Describe doing the feature and advantage of technical solution of the present invention further with lower part.
In one aspect of the invention, the present invention proposes a kind of gasket.According to embodiments of the invention, the composition kind that gasket comprises and content thereof are not particularly limited.Such as according to some embodiments of the present invention, gasket comprises: the polyvinyl chloride resin of 35 ~ 50 weight parts; The elastomerics of 5 ~ 15 weight parts; The softening agent of 20 ~ 40 weight parts; The mineral filler of 0-20 weight part; The thermo-stabilizer of 1 ~ 3 weight part; The lubricant of 0.5 ~ 2 weight part; And 0.1 ~ 2 whipping agent of weight part.Thus, gasket has that fretting map structure, elasticity and toughness are better, transport property is low, not easily with the adhesion such as side plate, Men Ti, to advantages such as the corrodibility such as side plate, Men Ti are low, reduce door seal and inner bag, side plate interaction time frictional force, extend the work-ing life of gasket.Meanwhile, fretting map structure door seal internal stress is little, and shaping efficiency is high, under maximization keeps the original mechanical property prerequisite of goods, promotes the quality of goods and reduces costs.
According to a particular embodiment of the invention, polyvinyl chloride resin is PVCSGI-III type, elastomerics is at least one being selected from butyronitrile, EVA and E-VA-CC, softening agent is polyester softening agent and/or TOTM, mineral filler is at least one being selected from calcium carbonate, red soil and mica, thermo-stabilizer is at least one being selected from organotin, antimony, calcium-zinc, rare earth, hydrotalcite, metallic soap, lubricant is at least one being selected from lipid acid, ester, salt and wax, or whipping agent is at least one of AC whipping agent, OBSH whipping agent and H whipping agent.Thus, it is good that gasket has cold property, and embrittlement temperature can reduce to-70 DEG C, extends the work-ing life of gasket at cold condition, and the advantages such as gasket feel is good, thermal and insulating performance good, the wear-resisting anti-deformation increase of door seal, further increase the product flavor quality of door seal.
In another aspect of the present invention, the present invention proposes a kind of method preparing gasket.According to embodiments of the invention, the method comprises: by polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing, obtain gasket raw mixture; Gasket raw mixture is carried out extrusion moulding and finishing, to obtain gasket, wherein, extrusion temperature is 135 ~ 165 DEG C, and the consumption of polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent is: the polyvinyl chloride resin of 35 ~ 50 weight parts; The elastomerics of 5 ~ 15 weight parts; The softening agent of 20 ~ 40 weight parts; The mineral filler of 0 ~ 20 weight part; The thermo-stabilizer of 1 ~ 3 weight part; The lubricant of 0.5 ~ 2 weight part; And 0.1 ~ 2 whipping agent of weight part.Thus, effectively can prepare gasket, and prepared gasket has snappiness, its permanent compression set >=75%, door seal creep resistance is good, heat-resisting, cold-resistant, the anti-precipitation of softening agent, transport property are little, with the paint film such as side plate, Men Ti without adhesion, to advantages such as the no corrosions such as side plate, Men Ti, solve the bad problems such as gasket strand limit, folding, fold, distortion.
According to a particular embodiment of the invention, polyvinyl chloride resin is PVCSGI-III type, elastomerics is at least one being selected from butyronitrile, EVA and E-VA-CC, softening agent is polyester softening agent and/or TOTM, mineral filler is at least one being selected from calcium carbonate, red soil and mica, thermo-stabilizer is at least one being selected from organotin, antimony, calcium-zinc, rare earth, hydrotalcite, metallic soap, lubricant is at least one being selected from lipid acid, ester, salt and wax, or whipping agent is at least one of AC whipping agent, OBSH whipping agent and H whipping agent.Thus, it is good that gasket has cold property, embrittlement temperature can reduce to-70 DEG C, extend the work-ing life of gasket at cold condition, and the advantages such as gasket feel is good, thermal and insulating performance good, the wear-resisting anti-deformation increase of door seal, further increase the product flavor quality of door seal.
According to concrete embodiment of the present invention, polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing are comprised further: by described polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing, and carry out granulation, wherein, the blowing temperature of whipping agent is lower than prilling temperature.Thus, can granulation effectively, thus can effectively be used for preparing the gasket with fretting map structure further.In this granulation material, whipping agent mixes with door seal master batch, and the expansion density of gained fretting map door seal is comparatively even, cell size is comparatively consistent, and door seal over-all properties is higher.
According to one embodiment of present invention, prilling temperature is 165 ~ 175 DEG C.Thus, effectively can obtain whipping agent master batch, thus can be used for further preparing gasket.
According to one embodiment of present invention, polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent mixing are comprised further: by polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, mix lubricant, and carry out granulation, to obtain masterbatch master batch; Whipping agent is carried out granulation, to obtain whipping agent master batch; And described masterbatch master batch is mixed with described whipping agent master batch, obtain gasket raw mixture.Thus, the gasket with fretting map structure can effectively be prepared.Present method, to the very large design freedom of planner, according to concrete environment for use and can require the addition that carry out adjusting whipping agent, to reach the demand of different expansion density.
In another of the present invention, the present invention proposes one and prepare gasket.According to embodiments of the invention, this gasket is prepared from by the above-mentioned method preparing gasket.Thus, gasket has snappiness, its permanent compression set >=75%, and door seal creep resistance is good, heat-resisting, cold-resistant, and the anti-precipitation of softening agent, transport property are little, with the paint film such as side plate, Men Ti without adhesion, to advantages such as the no corrosions such as side plate, Men Ti.In addition, before for the feature and advantage described by gasket preparation method, also be natch suitable for this gasket, repeat no more.
In another aspect of the invention, the present invention proposes a kind of refrigeration equipment.According to embodiments of the invention, this refrigeration equipment comprises the gasket of the above embodiments.Thus, the gasket of equipment has snappiness, its permanent compression set >=75%, and door seal creep resistance is good, heat-resisting, cold-resistant, and the anti-precipitation of softening agent, transport property are little, with the paint film such as side plate, Men Ti without adhesion, to advantages such as the no corrosions such as side plate, Men Ti.In addition, before for the described feature and advantage of gasket and preparation method thereof, be also suitable for this refrigeration equipment natch, repeat no more.About the miscellaneous part of refrigeration equipment, any known parts in any art of refrigeration units can be adopted, do not repeat them here.
According to a particular embodiment of the invention, refrigeration equipment is refrigerator or refrigerator-freezer.Thus, above-mentioned gasket can be applied on refrigerator or refrigerator-freezer.
Below by specific embodiment, the present invention will be described, it should be noted that these embodiments are only used to illustration purpose, and can not be construed to limitation of the present invention by any way.In addition, in the examples below that if not otherwise specified, then adopted equipment and material are commercially available.
General method:
Below in conjunction with accompanying drawing 1 and accompanying drawing 2, the method preparing gasket is described:
Raw material: polyvinyl chloride resin, elastomerics, softening agent, mineral filler, thermo-stabilizer, lubricant and whipping agent etc.
Equipment: homogenizer, conical double-screw tablets press, single screw extrusion machine etc.
In the examples below that, the main technique preparing gasket employing has the following two kinds:
1) single stage method:
Whipping agent and other material are mixed together, then use conical double-screw granulator granulation, granulation material, again on door seal production line, extrudes ad hoc structure gasket by mouth mould and stock mould.This processing requirement foaming agent foam temperature must be mated with the granulation of door seal material and gasket extrusion temperature, and namely blowing temperature is lower than prilling temperature, and suitable with extrusion temperature, could realize controlling foaming, obtain fretting map gasket.
2) two-step approach:
Whipping agent and door seal material are separated granulation, whipping agent independent granulation producing foamed master batch, this master batch and the mixing of door seal material pellet extrude gasket again.This technique only needs foaming agent foam temperature and gasket extrusion Temperature Matching.
Embodiment 1:
PVC(Qilu Petrochemical S1300) 100 weight parts, polyester plasticizer (PPA-2500) 40 weight part, extender plasticizer (ESO) 10 weight part, organotin 2 weight part, fine particle calcium carbonate 15 weight part, coarse whiting 15 weight part, whipping agent (OBSH) 0.35 weight part, mould inhibitor 8 weight part.Main processes: at first whipping agent and softening agent, organotin one mix by proportioning, grinding, PVC resin powder is put into high mixer, low speed (400 ~ 600r/min, lower same) stir, slowly all accompany each other into softening agent while stirring, turn at a high speed (800r ~ 1200r) after adding, when temperature rises to about 100 DEG C, turn low speed again, low high speed alternation, control temperature of charge about 15min between 90 ~ 110 DEG C.Turn low speed and add mould inhibitor, finally add calcium powder, continue stirring 3 ~ 5min, take the dish out of the pot, cool, discharging.Above-mentioned powder mixture conical double-screw plastifies extruding pelletization, and must foam snappiness gasket pellet.Get this pellet to extrude on gasket special production line, shape, cool, cut, be set with magnetic stripe, welding, sizing suspension, obtain refrigerator/ice-box gasket.Gasket extrusion temperature is 135 ~ 165 DEG C, mates with Foaming temperatures (157 ~ 162 DEG C).
Embodiment 2:
PVC resin powder (SG II type) 40 weight parts, powdered nitrile rubber (P83) 8 weight part, TOTM25 weight part, ESO5 weight part, rare earth composite stabilizer 1.5 weight part, calcium powder 18 weight part, AC whipping agent 0.75 weight part, ZnSt1.25 weight part, antiseptic-germicide 0.5 weight part.Batch mixing, granulation routinely, extrude, weld, hang, obtain required gasket.
Embodiment 3:
PVC(SG III) 35 weight parts, EVA powder 15 weight part (EVA30/10+EVA30/30), DOTP15 weight part+TOTM10 weight part+ESO weight 5 parts, Ca-Zn stablizer 2 weight part, calcium powder 15 weight part, AC whipping agent 1.25 weight part, antiseptic-germicide 0.75 weight part.
Embodiment 4:
PVC(SG I 25 weight part+S100013 weight part), E-VA-CO(ELVALOY741) 10 weight parts, polyester (PPA-2000) 20 weight part+TOTM6 weight part+ESO weight 4 parts, calcium powder 12 weight part, hydrotalcite stablizer 2.5 weight part, AC whipping agent 1.75 weight part, mould inhibitor 2.7 weight part.First take PVC(S1000)+TOTM+ESO+ stablizer 1.5 weight part+AC whipping agent mixing granulation, producing foamed agent master batch.Then granulation together after rest materials being mixed.When door seal is extruded, extrude after two kinds of pellets are mixed in proportion, obtain fretting map gasket.
Embodiment 5:
PVC(SG II) 45 weight parts, EVA powder 5 weight part+E-VA-CO5 weight part (ELVALOY742), DOTP10 weight part+TOTM10 weight part+PPA60007 weight part+ESO5 weight part, calcium powder 13 weight part, Ca-Zn stablizer 1.8 weight part, blowing agent AC 0.47 weight part, mould inhibitor 1.33 weight part.First by part PVC15 weight part+0.8 weight part Ca-Zn stablizer+DOTP10 weight part+ESO5 weight part+all AC, mixing, granulation, producing foamed agent master batch.Rest materials mixing granulation, makes starting material pellet.Masterbatch and material pellet are extruded by set proportioning mixing, obtains required gasket.
Embodiment 6:
TPE(TPV or TPR, coincidence gate sealing property requires) 90 weight parts, AC whipping agent master batch 10 weight part.Prepared by foaming master batch: get the TPE elastomer that melting means is higher, AC whipping agent (or blowing agent H), auxiliary agent 15 weight part, and mixing, parallel dual-screw extruding machine group granulation (temperature 165 ~ 175 DEG C) namely obtains whipping agent master batch.
Although illustrate and describe embodiments of the invention above; be understandable that; above-described embodiment is exemplary; limitation of the present invention can not be interpreted as; those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification, and these all drop within the scope of the present invention.
Claims (4)
1. a gasket, is characterized in that, comprises:
PVC100 weight part;
Polyester plasticizer PPA-250040 weight part;
Extender plasticizer ESO10 weight part;
Organotin 2 weight part;
Fine particle calcium carbonate 15 weight part;
Coarse whiting 15 weight part;
Whipping agent OBSH0.35 weight part,
Mould inhibitor 8 weight part.
2. prepare the method for gasket for one kind, it is characterized in that, comprise, described gasket is made up of following: PVC100 weight part, polyester plasticizer PPA-250040 weight part, extender plasticizer ESO10 weight part, organotin 2 weight part, fine particle calcium carbonate 15 weight part, coarse whiting 15 weight part, whipping agent OBSH0.35 weight part, mould inhibitor 8 weight part
By described whipping agent, softening agent and described organotin mix, grinding, described PVC is put into high mixer, stirring at low speed is carried out with 400 ~ 600r/min, slowly add described softening agent while stirring, high-speed stirring is carried out with 800 ~ 1200r/min after adding, when temperature rises to about 100 DEG C, stirring at low speed is carried out with 400 ~ 600r/min, low speed is carried out again and high speed alternation stirs with 400 ~ 600r/min and 800 ~ 1200r/min, control temperature of charge between 90 ~ 110 DEG C after 15min, be converted to 400 ~ 600r/min and carry out stirring at low speed, add described mould inhibitor, finally add calcium powder, continue stirring 3 ~ 5min, take the dish out of the pot, cooling, discharging, to obtain powder mixture, described powder mixture conical double-screw is plastified extruding pelletization, to obtain gasket pellet, get described gasket pellet to extrude on gasket special production line, sizing, cooling, cut, suit magnetic stripe, welding, sizing is hung, to obtain refrigerator/ice-box gasket, gasket extrusion temperature is 135 ~ 165 DEG C, Foaming temperatures is 157 ~ 162 DEG C.
3. a refrigeration equipment, is characterized in that, comprises the gasket described in claim 1 or 2.
4. refrigeration equipment according to claim 3, is characterized in that, described refrigeration equipment is refrigerator or refrigerator-freezer.
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| CN201310036290.0A CN103087446B (en) | 2013-01-30 | 2013-01-30 | Gasket and preparation method thereof, refrigeration equipment |
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| CN201310036290.0A CN103087446B (en) | 2013-01-30 | 2013-01-30 | Gasket and preparation method thereof, refrigeration equipment |
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| CN103087446A CN103087446A (en) | 2013-05-08 |
| CN103087446B true CN103087446B (en) | 2016-02-24 |
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| CN103739987A (en) * | 2013-12-09 | 2014-04-23 | 吴江市董鑫塑料包装厂 | PVC sealing strip sectional material |
| CN104312049A (en) * | 2014-10-31 | 2015-01-28 | 合肥华凌股份有限公司 | Polyvinyl chloride mixture, door seal, refrigerating device and manufacturing method |
| CN106609011B (en) * | 2015-10-21 | 2019-03-22 | 大电塑料（上海）有限公司 | A kind of foaming PVC material and its preparation method and application |
| CN106496856A (en) * | 2016-10-27 | 2017-03-15 | 合肥华凌股份有限公司 | Micro-foaming material and preparation method thereof and refrigeration plant |
| KR20190078619A (en) * | 2016-11-10 | 2019-07-04 | 이 아이 듀폰 디 네모아 앤드 캄파니 | Foam from a physical inorganic blowing agent with improved properties |
| CN106679299A (en) * | 2017-01-19 | 2017-05-17 | 合肥华凌股份有限公司 | Door seal strip, preparation process thereof and refrigeration equipment |
| CN107044758A (en) * | 2017-01-19 | 2017-08-15 | 合肥华凌股份有限公司 | Gasket and its preparation technology and refrigeration plant |
| CN106883533A (en) * | 2017-03-21 | 2017-06-23 | 合肥华凌股份有限公司 | Door seal composite and preparation method thereof and gasket |
| CN109320872B (en) * | 2018-09-12 | 2021-03-26 | 浙江路联装饰材料有限公司 | Method for inhibiting migration of polyvinyl chloride leather plasticizer |
| CN114044993A (en) * | 2021-12-10 | 2022-02-15 | 东莞欧德雅装饰材料有限公司 | Light PVC edge banding and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102417675A (en) * | 2011-09-23 | 2012-04-18 | 安徽万朗磁塑集团有限公司 | Material formula and preparation method of novel environment-friendly and environment-friendly antibacterial door seal rubber sleeve |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102417675A (en) * | 2011-09-23 | 2012-04-18 | 安徽万朗磁塑集团有限公司 | Material formula and preparation method of novel environment-friendly and environment-friendly antibacterial door seal rubber sleeve |
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