specific applications of polyurethane catalysts in several typical polyurethane soft foams

1. typical formula and performance of block polyether pu soft foam

polyether triol 100pbw

tdi80/20 46.0pbw

organotin catalyst 0.4pbw

tertiary amine catalyst 0.2pbw

silicone foam stabilizer 1.0pbw

water 3.6pbw

foaming aid 0~12pbw

performance:

foam density, kg/m3 22.4

tensile strength, kpa 96.3

elongation, % 220

tear strength, n/m 385

compression set, 50% 6

90% 6

cave formation load, kg

(38cm×35.6cm×10cm)

deformation 25% 13.6

65% 25.6

falling ball rebound, % 38

in recent years, in order to meet the needs of the market, some companies often produce foam with a low density (10kg/m3). when producing ultra-low density soft foam, it is not enough to simply add foaming agents and assistant foaming agents. to achieve this, there must also be a combination of relatively high-stability silicon surfactants and catalysts.

reference formula for producing low-density and ultra-low-density soft foam:

name	medium density		low density		ultra low density
	continuous	box type	continuous	box type	box type
polyether polyol	100	100	100	100	100
water	3.0	3.0	now we recommend a set of formulas, the characteristics of which are: the basic polyether polyol remains unchanged, using conventional mn5000 or 6000. · the isocyanate remains unchanged, and c-mdi, papi or modified mdi can be used. using special additive sh-140 can solve the problem. · basic recipe: highly active polyether triol mn5000 65pbw sh-140* 35pbw chain extender: 1,4-butanediol 5pbw cross-linking agent: glycerol 7pbw pore ​​opening agent: k-6530 0.2~0.5pbw catalyst a-2 1.2~1.3pbw appropriate amount of color paste water 5pbw mr-200 45pbw note: *sh-140 is our product. physical properties: overall foam density 340~350kg/m3 product: smooth surface, clear crust and low density. nbsp; 45pbw note: *sh-140 is our product. physical properties: overall foam density 340~350kg/m3 product: smooth surface, clear crust and low density. [db:标签] You might like flexible foam polyether polyol used in upholstered furniture foam​ customizable catalysts for polyurethane foam in refrigeration insulation: a comprehensive analysis of performance, design, and industrial applications surface active agent for flexible polyester foam to control cell openness optimizing foam breathability using advanced polyurethane open-cell technology​ polyurethane surfactants in oilfield chemicals: a comprehensive review of structure, performance, and applications advanced polyurethane surfactants for high-performance concrete additives: chemistry, mechanisms, and applications tailoring cell structure in polyurethane foams with advanced open-cell agents​ enhancing cushion comfort with high-performance polyurethane open cell additives advanced hard surface foam stabilizer for consistent cleaning performance: molecular design and industrial validation Call Us 18962365658 Email: edisonzhao@51qiguang.com Working hours: Monday to Friday, 9:00-17:30 (GMT+8), closed on holidays Scan to open our site Home Products Contact Search