Mechanochemical improvement of the flame‐retardant and mechanical properties of zinc borate and zinc borate–aluminum trihydrate‐filled poly(vinyl chloride)

Abstract

In this study, the effect of the high-energy mechanical milling of a mixture of poly(vinyl chloride) (PVC) with zinc borate (ZB) or ZB-aluminum trihydrate (ATH), a mixture of ZB and ATH, on the flame-retardant and mechanical properties of ZB and ZB-ATH filled PVC was examined. The high-energy mechanical milling of PVC/ZB and the PVC/ZB-ATH mixture produced chemical bonding between PVC and ZB or ZB-ATH, increasing the interfacial interaction of PVC/ZB and PVC/ZB-ATH blends, which resulted in a great increase in the limiting oxygen index, the impact and yield strengths, and the elongation at break of PVC/ZB and PVC/ZB-ATH blends. The results from ultraviolet spectroscopy and gas chromatography-mass spectroscopy show that mechanochemical modification of ZB and ZB-ATH much more effectively suppressed the release of aromatic compounds in PVC/ZB and PVC/ZB-ATH blends during burning. Mechanochemical modification provided an excellent route for the improvement of the flame-retardant and mechanical properties of flame-retardant-additive-filled PVC.

Flame Retardation Modification of Paper-Based PVC Wallcoverings

“…Then, free radical halogen atoms were generated from HCl gas in flame, preventing from chain reaction and flame retardant. [10][11][12] …”

Highly permeable membrane prepared by phase inversion of mechanochemically modified polyvinylchloride

“…Tongamp et al [14] used La 2 O 3 as additive for mechanochemical dechlorination of PVC, and showed that La 2 O 3 was more effective than CaO. Pi et al [15] mechanochemically treated zinc-borate-filled PVC, and showed that mechanochemical modification improved fire resistance and mechanical properties of PVC. As for the effects of mechanochemical modification on pure water flux and mechanical properties of phase inversion PVC membrane, no relevant research has been reported.…”

Macro‐mechanism of polyvinyl chloride shrink sleeves embossed marking

“…Thermomechanical method of tactile markings on shrink polymeric materials was developed using rigid polyvinyl chloride (PVC) films as an example. 1 Mechanical and relaxation properties of PVC compositions used for making heat shrinkable films 2 are determined by the chemical structure of polymer macromolecules, 3,4 along with the composition and rheological properties of plasticizers made of various low molecular weight liquids and amorphous chlorine-containing polymers. 5 Small amount of plasticizer in PVC compositions makes them unsuitable for the production of labels and films used for packaging goods and small parts due to their high brittleness, especially at low temperatures.…”

“…Series of tests were conducted using the samples placed on the rods with different gap values of 2,3,4,5,6,7,10,12,15,20,25,30, and 35 mm. Samples installed on the test bed were heated by hot air up to 100 8C for 400-500 s with an average heating rate of 0.15 8C/s to shrink the gap and for the relief to emerge.…”