+86-311-85851653                 contact@fmseal.com

HEBEI FENGMING PLASTIC PRODUCTS CO., LTD.

PHONE:+86-19832136619
TEL:+86-311-85851653 
FAX:+86-319-3252989
E-mail:
contact@fmseal.com

ADD:Yawo Village, Changzhuang Township, Wei County

Contact

Copyright: Hebei Fengming Plastic Products Co., Ltd.                 冀ICP备13011107号-1                             Powered by:300.cn

Navigation

NEWS CENTER

>
>
>
Introduction to PVC sealing strip

Contact

ADD:Yawo Village, Changzhuang Township, Wei County

TEL:+86-311-85851653

FAX:+86-319-3252989

E-mail:contact@fmseal.com

HEBEI FENGMING PLASTIC PRODUCTS CO., LTD.

Our company has accumulated rich experience and made outstanding achievements in the design and development of sealing strips for automobiles, high-speed rail, subways, containers, refrigerated trucks, ships, building doors and windows, industrial equipment, etc.

Introduction to PVC sealing strip

Source:
Release time:
2021/12/06
Page view
[Abstract]:

PVC sealing strip is formed by microwave vulcanization process at one time, with smooth and beautiful surface, good elasticity and resistance to compression deformation, weathering resistance, ozone resistance, chemical resistance and a wide temperature range (-40℃~+120℃), etc. Excellent performance, has been widely used in manufacturing industries such as automobile doors, windows and curtain walls.

Product specifications: For products with different shapes, different materials, or cold resistance, heat resistance, foaming, solid body, and special performance requirements, they can meet the needs of design and use.

Product process: Considering the performance requirements of aging resistance, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, chemical reagent resistance, flame retardancy, etc., neoprene rubber, ethylene propylene rubber, silicone rubber, natural -Neoprene-butadiene benzoic compound rubber, rubber and plastic compound compound and other compounds with excellent aging resistance properties.

The manufacturing method uses extrusion molding continuous vulcanization method, extrusion molding vulcanization tank vulcanization method or compression molding vulcanization method.

Identification method: 1. Use your nose to smell for any peculiar smell. Normal PVC sealing strips will have a pungent odor. Normal silicone rubber sealing strips will only have a little mellow smell, the smell is very small, almost smelling Less than.

2. Put the PVC sealing strip and the silicone rubber sealing strip at the same time under high temperature for a period of time (on the roof or in a sunny place), the PVC sealing strip will become very soft in a short time, and the grease on the surface of the sealing strip will be deposited and contaminated Dust, and yellowing (the oil is easy to absorb soil), oily, dirty hands; the physical properties of silicone rubber sealing strips are unchanged, the pressure cooker sealing ring for household use is made of silicone rubber, which uses the high temperature resistance of silicone rubber Non-toxic and environmentally friendly, there is no obvious change in physical properties of silicone rubber under a working environment of 200°C.

 

3. Put the PVC sealing strip and the silicone rubber sealing strip in the freezer compartment of the refrigerator at the same time. After a few hours, the PVC sealing strip will feel very stiff and easy to break, and the physical properties of the silicone rubber sealing strip will not change. There is no obvious change in the physical properties of silicone rubber at -50°C.

4. some relatively cheap sealing strips will have a lot of fillers, so the surface will not be very shiny, the color will be dim, the cross section of the sealing strip will be very rough, the hand feel is stiff, the stretch is almost inelastic, the color of the silicone rubber sealing strip is bright, and the hand feel Soft, stretch and stretch very elastic, cut off the sealing strip, the broken section becomes a delicate luster.

5. burning, the burning of PVC sealing strip will foam, shrink, emit black pungent smoke, burn insufficiently, and leave hard plastic residues.

6. look at the specific gravity, how many meters can be produced per kilogram. The vendors of PVC sealing strips have made great efforts in the use of fillers. Some of them, in pursuit of greater output, (save a little electricity), use talcum powder, heavy calcium and the like as fillers, which greatly increase the specific gravity of the sealing strip products. Our users generally buy by kilograms, and use them by length.) This invisibly increases the cost and seriously reduces the quality. Don't try. The PVC sealing strip with heavy calcium added, you stretch it back and forth by hand several times, a small amount of white powder will appear on the surface. The density of PVC sealing strip should be 1.4-1.6. Silicone rubber sealing strips use nano-scale silica as the filling and reinforcing effect, with light texture and density ratio between 1.1-1.25, so the material yield rate is 20% higher than that of PVC sealing strips.