New formula technical indicators

New formula technical indicators

The 2017-05-09 original biaoxian reticule coating network

New - formula technical indicators, rounding

JT/T280 pavement marking paint, the new standard, it is understood that this standard is supposed to be released in 2014.

Due to the standard group for the hot melt marking paint was not as usual - to.

But in reference to the various countries of the world's hot melt marking paint standard and combined with China's current road traffic line markings on the basis of the actual problems, after more than four years of time to argue standards within each data index, eventually form a standard draft.

That does not have the technical strength, also don't want to do test, also all day day out of paint manufacturers, na, you see here is ok, because you are in the sequence of elimination.

Policy: an unspecified number of rectification of a batch of, keep a batch

You in that?

A, what are the changes in the new standard and old standard:

1, the standard rules on the hot melt reflective marking paint total organic matter content of no less than 19%;

(a Yankee require high) (improve the appropriate USES performance of hot melt reflective marking paint, suitable for artificial cart construction and combining the large line construction machinery, and ensure the performance of hot melt reflective marking)

2, glass bead content not less than 30%, premixed glass beads round rate of not less than 80% of mandatory indicators;

(to ensure the pavement reflective marking continuous reflective performance, night driving safety first)

3, improve the hot melt reflective marking paint the initial brightness factor not less than 0.80, after 4 hours and high temperature, constant temperature of not less than 0.75 requirements;

(Qd visual performance improve pavement reflective marking day value (in the overseas version of the back reflection coefficient measuring instrument have this data, RL: night back reflection coefficient, Qd: marking visual recognition index) during the day and night retroreflecting performance)

4, the temperature of the compressive strength increased from 50 ℃ to 60 ℃, both hot melt reflective and hot melt bumps all want a high temperature compressive strength test, at the same time increase the softening point 100 ℃;

(enhanced the hot-melt road marking heat deformation and fouling resistance - that is, to improve the fouling resistance line)

To some extent improve the anti-pollution performance of hot melt reflective marking requirements.

5, heat deformation: from the color anti-skid road surface coating in hot melt type non-slip data index, the deformation resistance of coating is not less than 90% (improve the fouling resistance, wear-resisting performance of line).

6, modification, hot melt reflective coating liquid test method, put forward the concept of thermoplastic liquidity;

(performance, construction mixing glass beads in subsidence control can ease) China reticule coating network.

Control mixing glass beads in uniform distribution in the coating, surface and within the glass bead wear off after mixing glass beads to continue to play a role of reflective, do the marking is the reflective, ensure driving safety at night.

7, to cancel the hot melt type pavement marking paint, only keep hot melt reflective and hot melt bumps reticule coating (as long as it is to use on the road of hot melt reflective marking must have a continuous reflective performance, to ensure driving safety at night)

8 the environmental protection index, increase the pavement marking paint (refer to the pavement marking paint, harmful material set limit to "standard);

Environmental protection index of heavy metals and volatile emissions will be under control.

Note: energy conservation and emissions reduction indicates to cut corners.

Summary:

Just increase the content of organic matter on the surface of the standard, content of glass beads, brightness factor and so on, but all indicators together, both to ensure the construction performance, and to ensure the coating performance, still need to do small mind, China reticule coating network.

Recommend nothing more to do test, don't put technology to stay on the mouth.

Second, the new standard of hot melt reflective marking paint raw materials choice:

New standard draft was released, according to the paper did some test data requirements, offering tips to you now, in order to reference.

The choice of materials (manufacturer) should be careful,

Now the performance requirements for everyone to do a reference:

1, petroleum resin, softening point of 100 ℃ or more, the standard for pavement marking paint with resin has a regulation.

Comprehensive performance improvement (resin).

2, polyethylene wax, softening point of 100 ℃ or more, the pavement marking paint with polyethylene wax standard has a regulation.

3, plasticizer: using low temperature resistant plasticizer, nonvolatile, stable performance, to ensure that genuine, fake things, do not have to use).

4, titanium dioxide: domestic and imported difference is small. (because of the high content).

5, organic yellow: yellow and inorganic yellow difference is bigger, recommend test myself.

6, glass beads, with large size glass beads mixed within 0.8 ~ 2 mm test, observation 4 hours constant temperature sedimentation performance (through).

7, hot melt rubber: environmental weather resistance low melting rubber.

8, coarse whiting powder: conform to their requirements

9, other additives, defoaming, compressive strength, wear resistance, weather resistance, oxidation resistance, resistance to ultraviolet radiation (market)