Laser Direct Structuring Materials with Improved Plating Performance and Acceptable Mechanical Properties
A technology of laser direct forming and rubber grafting, which is applied in thin material processing, transportation and packaging, printed circuits, etc., and can solve the problem of not being equal
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preparation example Construction
[0152] In the preparation of high rubber graft copolymers, one or both of the rubber-like component or the rigid graft component may further contain a small amount, less than about 5 wt%, of a copolymerized crosslinking monomer (such as a di- or trifunctional monomers or combinations thereof) to increase graft attachment and / or crosslinking of one or both of the components. Preferably, crosslinking monomers are absent. High rubber graft copolymers can be prepared by conventional polymerization methods including emulsion, suspension, continuous emulsion-suspension, bulk and solution polymerization methods. These methods are known in the art of polymerization, especially for the preparation of a wide variety of highly rubbery grafted polymers (for modification affecting thermoplastic resins). Suitable embodiments of particular impact modifiers can be prepared by any of the aforementioned polymerization means. Preferred polymerization methods are in aqueous media and include em...
Embodiment
[0248] The following examples are presented to provide those of ordinary skill in the art with a complete disclosure and description of how to make and evaluate the methods, devices, and systems disclosed and claimed herein, and are intended to be purely exemplary and not intended to This disclosure is limited. Efforts have been made to ensure accuracy with respect to numbers (eg, amounts, temperatures, etc.), but some errors and deviations should be accounted for. Unless indicated otherwise, parts are parts by weight, temperature is in degrees Celsius (° C.) or at ambient temperature, and pressure is at or near atmospheric.
[0249] There are numerous variations and combinations of reaction conditions (eg, component concentrations, ideal solvents, solvent mixtures, temperatures, pressures, and other reaction ranges and conditions that can be used to optimize product purity and yield obtained from the described processes). Only reasonable and routine experimentation is requir...
Embodiment approach 1
[0260] Embodiment 1: A blended thermoplastic composition comprising: a. a polymer blend comprising: i. a polycarbonate polymer in an amount from about 40 wt% to about 70 wt%; and ii. from about 10 wt% to High rubber grafted acrylonitrile-butadiene-styrene (HRG-ABS) copolymer in an amount of about 25 wt %; b. styrene-acrylonitrile (SAN) copolymer in an amount from about 5 wt % to about 30 wt %; c. A laser direct structuring (LDS) additive in an amount from about 5 wt% to about 15 wt%; wherein the composition is capable of being plated and exhibits a mechanical strength greater than about 400 J / m after activation with a laser.
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