Method for modifying waste rubber-adhesive powder and producing composite rubber waterproof curling material

Abstract

The invention is concerned with waste rubber-rubber powder modifying, complex rubber waterproof rolled sheet made by the modified waste rubber-rubber powder and method. It is a comprehensive using for waste and old rubber. Step A is refining the modified rubber powder. Crush the waste and old rubber goods, remove impurity and take the part with over and equal to 40 mesh as fine rubber powder, then mix 100 fine rubber powder, 8 to 12 plasticizer and 0.5 to 1 modifier into fine mixing rubber powder, and modify the fine mixing rubber powder into highly shearing machine with 120+-5 degree. Step B is preparing the vulcanization rubber piece. The stuff is 100 synthetic rubber, 25 to 50 fine modified rubber powder, 2 to 8 zinc oxide, 0.5 to 2 accelerant M, 0.5 to 1.5 accelerant TT, 1 to 3 sulfur, 20 to 40 naphthene oil, 1 to 2 antioxidant A, 20 to 60 calcium carbonate, 40 to 80 carbon black. Mix and refine the synthetic rubber and fine modified rubber powder with the said stuff, except sulfidizing agent and accelerant. Add sulfidizing agent and accelerant with 80 to 90 degree and stop for 24 hours, and after refining again to get the molding piece. Step C is the production of un-vulcanization rubber piece. Mix and refine 100 butyl rubber, 8 to 10 polyisobutylene, 5 to 12 phenolic resin, 3 to 6 petroleum resin, 2 to 5 sodium oleate, 60 to 80 calcium carbonate and at 60 to 70 degree refine the mixture for 20 minutes again, then press or extrude the piece. Step D is complex vulcanization. Carry complex vulcanization on drum vulcanization machine to the vulcanization rubber piece without vulcanization and un-vulcanization rubber piece under the condition of 6 to 8 Mpa press to get the complex rubber waterproof rolled sheet. It uses for the waterproof layer to the underground building with high intention and extending nature, good dynamic capability.

Description

Technical field: [0001] The invention relates to a method for comprehensive utilization of waste rubber. In particular, it is a method for modifying waste rubber-rubber powder and using it to prepare composite rubber waterproof coiled material. Background technique: [0002] Waste rubber mainly comes from waste tires, waste rubber shoes, waste rubber hoses and scraps in the rubber production process. It belongs to industrial solid waste. In order to protect the living environment of human beings and develop a circular economy, the resource recycling and reuse of waste rubber , has drawn attention at home and abroad. [0003] At present, the comprehensive utilization of waste rubber is mainly to produce reclaimed rubber. For the production of reclaimed rubber from waste rubber, the method used is mainly the oil method; that is, at a temperature of 160-170 ° C, the waste rubber powder is processed through 6-8 After 1 hour of desulfurization process, it becomes reclaimed rubb...

AI Technical Summary

Problems solved by technology

[0004] Although the method of making reclaimed rubber from waste rubber comprehensively utilizes waste rubber, a large amount of waste gas and waste water are generated during the desulfurization process, which causes certain pollution to the surrounding ecological environment; moreover, the production process consumes a lot of energy. , the added value of the product is low; Among them, the regenerative softener that needs to be added in the dynamic desulfurization process mostly uses coal tar that is harmful to human health

[0005] At the same time, products made of reclaimed rubber have poor physical properties such as strength, elongation and dynamic properties.