Views: 9 Author: Site Editor Publish Time: 2021-05-27 Origin: Site
The origin of rubber and the composition of the rubber sheet material. The rubber ball is extremely elastic, and rubber is also used as a wooden handle to fasten to the strap of a stone or metal utensil, and as a filler for the handle.
The Maya could use rubber to make shoes. Although Central America does not formally vulcanize rubber like modern people, they can still use organic matter to achieve similar effects, such as mixing raw emulsions with different types of sap or some rattan. In the juice.
Reference standards for rubber sheet materials:
GB/T 528 Determination of tensile properties of vulcanized rubber sheet and thermoplastic rubber sheet
GB/T 531 Sauer type A hardness test method for rubber sheet
GB/T 1682 Test method for brittleness temperature of vulcanized rubber sheet
GB/T 1690 Test method for liquid resistance of vulcanized rubber sheet
GB/T 3512 Hot air aging test method for rubber sheet
GB/T 5575 Pear flower rubber sheet for chemical equipment lining
GB/T 6031 Determination of International Hardness of Vulcanized Rubber Sheet (30-85IRHD) Routine Test Method
GB/T 7759 Determination of Compression Set of Vulcanized Rubber Sheet with Constant Deformation at Normal Temperature and High Temperature
GB/T 7762 Ozone aging resistance test of vulcanized rubber sheet Static tensile test method
GB 11176 Electrical Insulating Rubber Sheet
HG/T 2180 Natural vulcanized rubber sheet for lining of phosphoric acid storage tank
