Common plastic resin according to their sensitivity to moisture and the need for
drying shown in Table 3. These polymer structure, crystallinity and water
absorption of background information will help us to understand why the
engineering plastic injection molding operation is different from other plastic,
and different types of engineering plastics in some sense is also different from
each other. Acrylic (acrylic) is PMMMA (polymethy-methacrylaye) Plexiglas, is an
amorphous thermoplastic material, good optical properties (can be as transparent
as glass, transparency can be achieved by 92%) of PMMA hardness
moderate-intensity, it is easy to scratch, obvious scratches. The area of
meeting room with cell phone jammer used is smaller than 300 square meters.
However, it is easy to polish, optical and mechanical degeneration in the
outdoors, elegance and sun exposure does not occur. Process on the production of
plastic mold - plastic injection - out of - vacuum forming, however whkone of
PMMA you can be more than an M As a side note, of PMMA is actually resistance to
outdoor exposure performance than PC, but the main drawback is that the
temperature low smaller, you can use upper and lower temperature, transparency
up to 92% of the theoretical conditions, the actual situation will be affected
by the limitations of the manufacturing process. In fact, we all missing the
plastic can be modified for applications to be adjusted The advantage of the
favorable side of the basic performance of various additives to improve the dark
side. GE and BAYER a PC resistant to 230 degrees or more, and DuPont nylon
resistant to 250 degrees, durable and stronger than of PBT. cell phone jammer
can shield the whole meeting room.
Early cell phone case with metal frame,
such as Ericsson, the early products of 388, not only shatterproof, shock
resistance also increased significantly, but also enables users so far miss the
feeling of that heavy heavy. With the development of cell phones, light and love
of people, but the metal frame of the "quality" has restricted the development
of cell phones, so a new shell material emerged, ABS composite plastic for its
good toughness (shock resistance), sealed high mechanical strength, resistance
to chemical corrosion, get in the hands of the very texture of the
characteristics of people of all ages. cell phone jammer can also be mounted in
a certain corner or a wall.
ABS plastic shell cell phone can be swept one
o'clock, when young people decorate cell phone to show off the personality to
become the first choice for their love of the plastic shell of the sense of
perspective, favorite plastic unlimited color changes, because it represents
their colorful and unfettered life they can become an important symbol of the
city flow flashing bright spot.
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