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A technology of compound foaming and compound rare earth, which is applied in the field of PVC foam board, can solve the problems of poor heat resistance, low market share, safety, etc., and achieves improved mechanical properties and foamability, smooth and flat exterior, and uniform pores. dense effect
Inactive Publication Date: 2017-01-04
CHUZHOU HONGYUAN SPRAYING
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[0003] Although PVC foam board has such a wide application space, its actual market share is low, especially in terms of home decoration materials. Satisfactory, there are potential safety hazards when using. In order to improve the comprehensive performance of PVC sheets, the most common method is to use polymer materials and inorganic fillers for blending modification.
In the article "Research on Flame Retardant NBR / PVC Foaming Materials", NBR and PVC are blended and foamed to obtain products with relatively good mechanical properties, but their heat resistance is poor, and flame retardants need to be added to achieve flame retardant effects, but for The mechanical properties of the material are greatly affected, and the use is limited
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[0013] A high heat-resistant PVC-NBR composite foam board modified by a composite rare earth metal salt, the composite foam board is made of the following raw materials in parts by weight: PVC 40, NBR 20, polyethyleneimine 4, pseudo-both aluminum Stone 3, cerium nitrate 0.1, lanthanum nitrate 0.1, yttrium nitrate 0.1, silicon powder 5, accelerator TMTD 0.4, stearic acid 0.5, vulcanizing agent PDM 1, AC foaming agent 2, triethyl borate 1, light stabilizer 0.5 , Calcium zinc stabilizer 4, silane coupling agent kh560 0.5, epoxy fatty acid methyl ester 5, zinc methacrylate 2, absolute ethanol 10, deionized water 20.
[0014] The preparation method of this composite foam board comprises the following steps:
[0015] (1) First mix absolute ethanol and deionized water to make a solution, then add polyethyleneimine, stir to dissolve, then add cerium nitrate, lanthanum nitrate, yttrium nitrate, pseudoboehmite, silane coupling agent kh560 , ball milling reaction for 2 hours, after the ...
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Abstract
The invention discloses a composite-rare-earth-metal-salt-modified high-heat-resistance PVC-NBR (polyvinyl chloride-nitrile-butadiene rubber) composite foam board and a preparation method thereof. By using the PVC-NBR blend material as the composite board substrate and adding the modified material prepared by blending polyethyleneimine, pseudoboehmite, composite rare-earth metal salts, a silane coupling agent and the like, the heat resistance, mechanical properties and foamability of the composite board are improved. The prepared board has the advantages of uniform compact inside pores, smooth appearance, impact and fall resistance, environment friendliness and flame retardancy, and has outstanding application advantages in the aspect of novel green home decorating materials.
Description
technical field [0001] The invention relates to the technical field of PVC foam boards, in particular to a high heat-resistant PVC-NBR composite foam board modified by a compound rare earth metal salt and a preparation method thereof. Background technique [0002] PVC foam board has the characteristics of waterproof, flame retardant, acid and alkali resistance, moth resistance, light weight, heat preservation, sound insulation, shock absorption, etc. It is an ideal substitute for wood, aluminum and composite boards, and is widely used in passenger cars and train carriages Ceiling, box core layer, interior decoration panels, building exterior wall panels, interior decoration panels, office, residential, public building compartments, commercial decorative frames, clean room panels, ceiling panels, etc. [0003] Although PVC foam board has such a wide application space, its actual market share is low, especially in terms of home decoration materials. Unexpectedly, there are po...
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