4 results about "Friendly environment" patented technology

This invention provides a method and system for evaluating the ergonomics of age-friendly environments in communities. The method includes the following steps: determining the community's pedestrian network and the activity scenarios of the elderly; mapping the shortest paths from building entrances to each activity scenario as access routes; determining the importance of each road segment based on the type and number of elderly residents in each building; calculating the physiological burden value of walking length, the rest burden reduction coefficient, and the thermal environment coefficient for each road segment using its length, the number of rest points, and community weather data, thereby determining the comprehensive physiological burden value of walking for each road segment; calculating the comprehensive perceived burden value of walking for each road segment; and integrating the comprehensive physiological burden value, comprehensive perceived burden value, and importance of each road segment at different times to calculate the age-friendliness index of each road segment, based on which the age-friendliness of the community is assessed. Based on the age-friendliness assessment, targeted modifications can be made to improve the age-friendly environment of the community.

The invention relates to the field of adhesives, in particular to environment-friendly glue for paperboards and a preparation process of the environment-friendly glue, and aims to solve the problem that high-speed development and wide application of an existing starch adhesive for paperboards in the paperboard industry are limited due to the fact that the existing starch adhesive for paperboards is low in bonding strength and poor in water resistance. Epoxy copolymer modified starch is adopted as a main raw material, the starch has good biodegradability, the formula does not contain harmful chemical substances such as formaldehyde and organic solvents, the environment and human health cannot be harmed in the using process, the environment-friendly requirement is met, and through the reasonable raw material formula and the preparation technology, the environment-friendly environment-friendly adhesive is prepared. According to the present invention, with the adoption of the formula, the glue has good adhesion performance, can meet the requirements of paperboard production, has good water resistance, can maintain stable adhesion strength under different environmental conditions, can effectively prevent the occurrence of the phenomena of paperboard glue failure, layering and the like, and can prolong the service life of the paperboard.

The invention discloses a degradation product, a preparation method thereof and an application of the degradation product in a PVC (polyvinyl chloride) plate, the degradation product is a polyvinyl chloride-hydroxyalkyl acid ester copolymer, and is obtained by completing a graft copolymerization reaction of polyhydroxyalkyl acid ester and polyvinyl chloride under the irradiation of an ultraviolet light source fluorescent lamp; by adding 17.6-53.8% by weight of the flame retardant into the PVC board, the degradation performance of the PVC board is improved, and meanwhile, the flame retardant, the filler, the charring agent, the plasticizer, the stabilizer, the processing aid and the antioxidant are added into the PVC board, so that the PVC board has low-smoke and low-halogen performance, does not contain toxic substances, has good mechanical properties and stability, and can be widely applied to the field of PVC boards. The method is of great significance to safe use and environment friendliness.

The utility model discloses an environment-friendly glue-free mattress, which belongs to the technical field of mattresses, and comprises a first quilting seam layer, a second quilting seam layer, a third quilting seam layer, a fourth quilting seam layer and a fifth quilting seam layer, the spring supporting layer is positioned below the first quilting seam layer; the filling comfortable layer is located between the first quilting seam layer and the spring supporting layer, and the outer portion of the filling comfortable layer is sleeved with a fabric jacket; the second quilting seam layer is positioned at the lowermost part of the mattress, is connected with the spring supporting layer and at least comprises a second surface cloth layer; the at least one piece of side wall surface cloth is arranged on the periphery of the mattress and is used for wrapping the first quilting seam layer, the spring supporting layer, the filling comfortable layer and the second quilting seam layer; wherein the shell fabric coat is connected with the side wall shell fabric through a first connecting piece, and the shell fabric coat is connected with the first quilting seam layer through a second connecting piece. According to the mattress, the problem that glue is used in the assembling process is solved, pollution to indoor air is reduced, and a healthy and environment-friendly environment is provided for a user.