CN101429315A - PVC/super powder composite material for seal strip - Google Patents
PVC/super powder composite material for seal strip Download PDFInfo
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- CN101429315A CN101429315A CNA2007101501110A CN200710150111A CN101429315A CN 101429315 A CN101429315 A CN 101429315A CN A2007101501110 A CNA2007101501110 A CN A2007101501110A CN 200710150111 A CN200710150111 A CN 200710150111A CN 101429315 A CN101429315 A CN 101429315A
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- sealed strip
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Abstract
The invention relates to a PVC/6,000-mesh ultra-fine composite material used for a sealing strip, which changes the prior sealing strip product consisting of a single raw material (rubber), and adopts a blending way to improve the performance of the product. Because the polyvinyl chloride (PVC) is a plastic with excellent performance, low price and wide application range, and the major defects of the PVC comprises poor thermal stability, low impact resisting strength, poor cold resistance poor and poor processability, the composite material is prepared through blending to perform modification and processing a plasticizer, a stabilizer, a quality-improving agent, a 6,000-mesh modified coarse whiting and a processing auxiliary agent which are added into the polyvinyl chloride. The product has the characteristics of good flexibility, long-term thermal stability, aging resistance, corrosion resistance, long service life and the like. The product of the composite material has the advantages of exquisite and smooth surface, good mobility, innocuity, safe and reliable sanitary properties, thus the composite material is a green material for environmental protection.
Description
Invention field
The present invention relates to technical field of polymer materials, especially sealed strip PVC/ super powder composite material.
Background technology
The domestic past of door and window aspect sealed strip such as refrigerator ice cabinet, automobile door and window, dwelling house door and window, thermostat container, soundproof room are all adopted the elastomeric material manufacturing, in recent years, some changes sealed strip into the plastics manufacturing in external many producers, especially Japan adopts plastic sealing strip in a large number, and this is the new trend of sealing strip material development.Because it is low than rubber that price is enriched in the plastics source, processing process is simple relatively, and waster is recyclable.
With PVC is that the macromolecular material instead of rubber material that main raw material is made is used to make sealed strip, and by contrast, PVC plastics sources is abundant, and price is low than rubber, and processing process is simpler relatively, and waste product, substandard products are recyclable.Not only save rubber sources, can also reduce cost greatly, improved the performance of material.
The sealed strip of our company invention mainly is to be that matrix resin forms through modification with the general-purpose plastics with the PVC/ super powder composite material, and the snappiness of its goods, elasticity, wearability are excellent.Be a kind of novel seal bar that satisfies national standard, have rebound resilience, flexible resistance, weather resisteant and low compression set preferably, utilize the sealed strip of this achievement preparation, technology is simple, less investment, and cost reduces by 20～25% than traditional rubber weather strip.
Summary of the invention
The objective of the invention is the PVC/ super powder composite material is applied in the sealed strip manufacturing, with the instead of rubber material.
The present invention is achieved through the following technical solutions:
Sealed strip is characterized in that with the PVC/ super powder composite material basal component and proportioning (weight percentage) are:
Polyvinyl chloride (PVC) RESINS 62.7～44% (wt);
Softening agent 25～35% (wt is in base-material);
Stablizer 1.3～1.5% (wt is in base-material);
Processing and remodelling agent 6～6.5% (wt is in base-material);
Superfine powder 5～13% (wt is in base-material).
And stablizer is selected the rare-earth stabilizer of environmental protection low toxicity for use.
And, can also join in order to reduce cost small amount of plasticizer as, epoxy soybean by, clorafin etc.
And the rheology modification agent that can also add (in base-material) 1% according to processibility is to improve processing fluidity.
And, can also add (in the base-material base) 0.3～0.5% matting agent to reach the matt surface of rubber item.
The advantage that the present invention compared with prior art has is:
1. the fineness of common weighting agent (i.e. 18 μ m) about 800 orders mainly is that mineral filler plays filling effect, can reduce cost to a certain extent, but can not satisfy the physicals requirement of product fully, but added superfine powder, according to its toughness reinforcing enhancing principle, its every performance index all can satisfy the quality index requirement, in addition, also reduce cost, reduced process complexity
2. the present invention is guaranteeing that superfine powder can be used for manufacturing sealed strips such as refrigerator ice cabinet under the product properties prerequisite, also can prepare automobile door and window bar, dwelling house door and window sealing strip, also can be used for door and window aspect, loading levels such as chemical field, the vehicles, building and thermostat container, soundproof room can reach more than 50%.Replaced traditional single material products, promptly improved productivity and reduced cost again greatly.
3. this product has been selected for use and has been had good photo and thermal stability and anti-back property, thermostability and oilness efficiently, and heavy metal content index satisfies international up-to-date environmentfriendly products rare-earth stabilizer, is the preferred raw materials that substitutes calcium zinc, organotin stabilizer.
Embodiment
Embodiment: automobile door and window sealing strip with the component and the proportioning of PVC/ super powder composite material is:
Polyvinyl chloride resin 44～62.7kg
DOP 18.8～30.6kg
Clorafin 6.2～4.4kg
Stablizer 1.3～1.5kg
Processing modification agent 6～6.5kg
Superfine powder 5～13kg
Its preparation method is
Polyvinyl chloride resin is put into high mixer, add stablizer, softening agent, transformation of the way agent, superfine powder and other Synergist S-421 95 respectively and mediate back input twin screw extruder plasticizing granulation, cooling, packing at a high speed 80～1000.
The weather strip for automobile of superfine powder modification of the present invention.Because the change of weighting agent, thereby the consistency that has improved with resin improves a lot the mechanical property of sealed strip and snappiness. gained sealed strip index parameter meets the GB-7526-87 standard code:
(Shao Shi A type) hardness/degree 65 ± 5
Tensile strength at yield (m:n)/Mpa 7
Tensile yield (m:n)/% 350
Compression set
(230 * 70 hours draught max) accumulation data breaking tenacity (m:n)/KNm
-115
Temperature limit of brittleness (≯)/℃-30
Above example can according to the different hardness index request, can select for use the superfine powder of different additions to reach the toughening modifying purpose according to practical situation.The product that this enforcement makes all can be up to state standards after testing.
Claims (6)
1, sealed strip is characterized in that with the PVC/ super powder composite material, forms by following allocation proportion: (weight percent)
Polyvinyl chloride (PVC) RESINS 50～70%;
Softening agent 20～35%;
Stablizer 2～5%;
Processing aid 1～3%;
Superfine powder 7～14%;
Processing modification agent 1～3%.
2, sealed strip according to claim 1 PVC/ super powder composite material is characterized in that described polyvinyl chloride (PVC) RESINS is SG-3.
3, sealed strip according to claim 1 PVC/ super powder composite material, it is characterized in that described softening agent be DOP or epoxy soybean by or clorafin or three's any mixture.
4, sealed strip according to claim 1 PVC/ super powder composite material is characterized in that described stablizer is the environment-friendly type rare-earth stabilizer that meets international standard.
5, superfine powder is water-ground limestone, light calcium carbonate, kaolin, talcum powder, magnesium hydroxide, aluminium hydroxide or their mixture of particle diameter between 2500 orders～12500 orders.
6, sealed strip according to claim 1 PVC/ super powder composite material is characterized in that described processing modification agent is LG-quasi-styrene rheology modification agent or paracril or any mixture of the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101501110A CN101429315A (en) | 2007-11-08 | 2007-11-08 | PVC/super powder composite material for seal strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101501110A CN101429315A (en) | 2007-11-08 | 2007-11-08 | PVC/super powder composite material for seal strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101429315A true CN101429315A (en) | 2009-05-13 |
Family
ID=40644963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101501110A Pending CN101429315A (en) | 2007-11-08 | 2007-11-08 | PVC/super powder composite material for seal strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101429315A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242601A (en) * | 2013-04-27 | 2013-08-14 | 苏州市德莱尔建材科技有限公司 | Flame-retardant high-strength PVC (Polyvinyl Chloride) sealing strip and preparation method thereof |
| 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 |
-
2007
- 2007-11-08 CN CNA2007101501110A patent/CN101429315A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242601A (en) * | 2013-04-27 | 2013-08-14 | 苏州市德莱尔建材科技有限公司 | Flame-retardant high-strength PVC (Polyvinyl Chloride) sealing strip and preparation method thereof |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090513 |