1. A non-halogen flame-retardant resin composition comprising:
(A) a base polymer containing 90% by mass or more of a mixture of a polyolefin-based resin and a styrene-based elastomer, the polyolefin-based resin being at least one selected from the group consisting of ethylene-ethyl acrylate copolymers, ethylene-methyl acrylate copolymers, ethylene-vinyl acetate copolymers, ethylene-butene copolymers, ethylene-octene copolymers, and very low-density polyethylenes, the polyolefin-based resin having an ethylene content of 50% by mass or more;
(B) a metal phosphinate; and
(C) a nitrogen-based flame retardant, and wherein
the non-halogen flame-retardant resin composition contains no metal hydroxides.
2. The non-halogen flame-retardant resin composition according to claim 1, wherein a mass ratio of the content of the polyolefin-based resin to the content of the styrene-based elastomer (polyolefin-based resin:styrene-based elastomer) is 90:10 to 50:50.
3. The non-halogen flame-retardant resin composition according to claim 1, wherein 10 to 50 parts by mass of the metal phosphinate and 10 to 50 parts by mass of the nitrogen-based flame retardant are contained relative to 100 parts by mass of the base polymer.
4. The non-halogen flame-retardant resin composition according to claim 1, wherein the styrene-based elastomer is a block copolymer of styrene and a rubber component, and the content of the styrene component is 10% to 70% by mass.
5. The non-halogen flame-retardant resin composition according to claim 1, wherein the metal phosphinate is aluminum hypophosphite.
6. The non-halogen flame-retardant resin composition according to claim 1, wherein the nitrogen-based flame retardant is melamine cyanurate.
7. The non-halogen flame-retardant resin composition according to claim 1, further comprising a multifunctional monomer.
8. An insulated electric wire comprising a conductor and a coating layer that covers the conductor, wherein the coating layer is composed of the non-halogen flame-retardant resin composition according to claim 1.
9. The insulated electric wire according to claim 8, wherein the coating layer is cross-linked by irradiation with ionizing radiation.
10. The insulated electric wire according to claim 8, wherein the conductor has an outer diameter of 0.1 mm or more and 0.8 mm or less, and the coating layer has a thickness of 0.1 mm or more and 1 mm or less.
11. A tube produced by forming the non-halogen flame-retardant resin composition according to claim 1 into a tube.
12. A heat-shrinkable tube produced by cross-linking the tube according to claim 11 by irradiation with ionizing radiation, increasing the diameter of the tube under heating, and subsequently conducting cooling to fix the shape of the tube.
13. An insulated electric wire comprising a conductor and a coating layer that covers the conductor, wherein the coating layer is formed by cross-linking a non-halogen flame-retardant resin composition by irradiation with ionizing radiation, the non-halogen flame-retardant resin composition containing a base polymer containing 50% by mass or more of a polyolefin-based resin, a metal phosphinate, and a nitrogen-based flame retardant, the polyolefin-based resin being at least one selected from the group consisting of ethylene-ethyl acrylate copolymers, ethylene-methyl acrylate copolymers, ethylene-vinyl acetate copolymers, ethylene-butene copolymers, ethylene-octene copolymers, and very low-density polyethylenes, the polyolefin-based resin having an ethylene content of 50% by mass or more, the non-halogen flame-retardant resin composition containing no metal hydroxides, and
the coating layer has an initial tensile strength of 13.8 MPa or more, an initial tensile elongation of 300% or more, a retention of each of the tensile strength and the tensile elongation of 80% or more after being heat-aged at 180\xb0 C. for seven days, and passes a Vertical-Specimen-Flame test (VW-1) specified in UL standards.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A reflective target for a vehicle measuring system, comprising:
an elongated cylindrical element, an outer surface of the cylindrical element being reflective to light.
2. A reflective target, according to claim 1, wherein:
the cylindrical element is a solid rod or a hollow tube.
3. A reflective target, according to claim 2, wherein:
the outer surface of the cylindrical element is painted white.
4. A reflective target, according to claim 2, further comprising:
a plumb line disposed within the hollow tube, for ensuring that the target is vertically plumb.
5. A reflective target, according to claim 1, further comprising:
a plumb line disposed without the cylindrical element, for ensuring that the cylindrical element is vertically plumb.
6. A reflective target, according to claim 1, further comprising:
a disc-shaped magnet for attaching to a measurement point on the vehicle;
a spacer rod extending between the magnet and a top end of the cylindrical element.
7. A reflective target, according to claim 1, further comprising:
a base for supporting the target on the ground;
a support rod extending between the base and a bottom end of the cylindrical element;
an extendible tube extending from the top of the cylindrical element; and
an indicator disposed at a distal end of the extendible tube.
8. A reflective target, according to claim 1, wherein the reflective target is disposed on a measuring fixture comprising:
a base;
one or more bars extending vertically upward from the base;
a pointer extending from the one or more bars, a distal end of which can be disposed adjacent an upper body measurement point.
9. A reflective target, according to claim 8, further comprising:
a second reflective target disposed on the measuring fixture.
10. A reflective target, according to claim 1, wherein the reflective target has a rounded outer surface.
11. A reflective target, according to claim 1, wherein the reflective target is a component of a vehicle measuring system comprising:
a plurality of light-reflective targets for associating with a plurality of measurement points on a vehicle;
a measuring head for measuring locations of the plurality of targets and providing target location data indicative of the target locations; and
a computer for controlling the operation of the measuring head and for analyzing the target location data supplied by the measuring head.
12. A measuring head for determining the locations of targets in a vehicle measuring system, comprising:
a base covered with a housing;
a rotating platform disposed on the base and within the housing;
means for rotating the rotating platform;
a encoder indicating the rotational position of the rotating platform;
two windows in the housing;
two lasers mounted at two positions at a fixed angle on the rotating platform;
two light sensors, each associated with a respective laser;
wherein the two lasers are arranged such that beams from the two lasers pass through respective ones of the two windows and that light reflected from targets will impinge upon a respective one of the two sensors.
13. A measuring head, according to claim 12, wherein:
each of the two lasers emit a light beam having a characteristic which enables a one of the two beams to be distinguished from the other of the two beams.
14. A measuring head, according to claim 12, wherein: each of the two lasers emit a light beam which is pulsed at a unique frequency.
15. A measuring head, according to claim 12, further comprising:
communications electronics for communicating with a transmission module associated with an external computer.
16. A measuring head, according to claim 12, further comprising:
means for tilting the rotating platform and leveling the rotating platform.
17. A measuring head, according to claim 12, wherein the housing is generally in the form of a disc, having a height so that it can fit underneath a vehicle.
18. Method of measuring a plurality of points on a vehicle, comprising:
disposing a plurality of light-reflective targets at a plurality of points on the vehicle;
with a measuring head, directing light beams at the targets and sensing light reflected from the targets;
determining positions of the targets based on the angle of the head when each of the plurality of light beams is reflected from the target; and
with the measuring head, finding a lower edge of each target.
19. Method, according to claim 18, further comprising:
providing a fixture with a pointer for indicating upper body points;
wherein selected ones of the targets are disposed on the fixture.
20. Method, according to claim 19, further comprising:
calibrating the fixture.
21. Method, according to claim 18, wherein:
selected ones of the points are on the exterior of the vehicle, including the upper exterior surfaces of the vehicle.
22. Method, according to claim 18, further comprising:
maintaining the targets plumb.
23. Method, according to claim 22, further comprising:
locating a target by directing collimated light beams from the measuring head at the target and sensing light reflected off the target.
24. Method, according to claim 23, further comprising;
adjusting the elevation of the laser beam to locate an end of the target.
25. Method, according to claim 18, further comprising:
providing the targets with rounded external surfaces.
26. Method of measuring a plurality of points on a vehicle, comprising:
disposing a plurality of light-reflective targets at a plurality of points on the vehicle;
with a measuring head, directing light beams at the targets and sensing light reflected from the targets;
determining positions of the targets based on the angle of the head when each of the plurality of light beams is reflected from the target; and
with the measuring head, sensing a black-white-black pattern from a narrow reflector surface to pick out a target.