What are the most type of rubber shoes buy of college students?5 answersCollege students commonly prefer lace type rubber shoes due to their convenience and fashionable appearance. These shoes come in various designs and functionalities, catering to different needs. Some students opt for lace type rubber boots with cow leather attaching blocks for added durability and a stylish look. Others may choose environmental protection modified rubber shoes with nanometer particles for enhanced wear resistance, flexibility, and color customization. Additionally, static full rubber shoes with safety features like conductors, fuses, and busbars are favored by students for protection against static electricity and potential electric shocks. Overall, the versatility, style, and practicality of lace type rubber shoes make them a popular choice among college students.
What material would work better for football outsole but is not available?5 answersA modified environmentally-friendly thermoplastic styrene-butadiene rubber outsole material with rice bran as a filler could work better for a football outsole. This material meets environmental protection requirements and has increased wear resistance compared to traditional materials. Another option is an ethylene-vinyl acetate (EVA)/modified starch compound, which provides good tensile strength, tear strength, and abrasion resistance. It also improves biodegradability, addressing environmental concerns. Additionally, a synthetic material for the outsole of footwear, consisting of SBS, rubber, resin, and other components, offers better wear resistance and higher production efficiency. A rubber outsole material made of No.1 rubber, cis-polybutadiene, and other raw materials also possesses excellent wear resistance. Lastly, a novel outsole material with components such as styrene-butadiene rubber, polyurethane, and modified basalt fibers provides excellent mechanical performance, wear resistance, and stability, making it suitable for special shoes. Unfortunately, the availability of these materials for football outsoles is not mentioned in the abstracts.
How do you mold the rubber in to a shoe ,older?4 answersRubber shoe molding processes involve several steps. First, the raw material is processed to obtain primary male and female molds, which are then ground and drilled to create secondary molds. These secondary molds undergo trimming, deflashing, and paint spraying to obtain finished molds. The rubber is vulcanized to produce finished rubber. Finally, compression molding is performed using the finished molds to obtain the rubber shoe sole. Another method involves using a mold assembly with left and right mold boxes, which are locked using mechanisms. A shoe rubber foaming and molding machine consists of a pedestal, mold clamping device, last inversing device, and last, providing a simple and efficient structure. Additionally, rubber shoes can be molded using a process that involves mixing ingredients, heating, charging into a metal mold, cooling, and drying. Another method uses SBS as the main raw material and involves liquefaction, filling and pressing, cooling, finishing, and drying.
What are the implications of the global rubber industry for the global economy?4 answersThe global rubber industry has significant implications for the global economy. The increasing demand for natural rubber has led to the expansion of rubber plantations, often at the expense of agricultural land for staple crops. This competition between rubber production and food systems affects the livelihoods of rural communities and their access to natural resources such as water. Additionally, sector-specific policies in the rubber industry can have spill-over effects on other sectors and countries, impacting price relations and market dynamics. The economic life-cycle of rubber trees and the cost of production also play a role in the industry's impact on the global economy. Furthermore, the rise of the circular economy and digital transition in the plastics industry, which includes synthetic rubber, brings structural and workforce changes that require adaptation and skills hybridization. Overall, the global rubber industry has environmental, social, and economic implications that affect various aspects of the global economy.
What is the competitive landscape of the rubber industry?4 answersRubber exporting countries such as Thailand, Indonesia, and Malaysia have strong competitiveness in the global market for natural rubber commodities. Indonesia ranks second after Vietnam for competitiveness in the ASEAN market. The expansion of rubber plantations in Southeast Asia could lead to significant environmental consequences. Mexico's states of Tabasco, Veracruz, Chiapas, and Oaxaca have competitive advantages in natural rubber production. The rubber industry in Indonesia during 2009 had an oligopoly marketing structure.
What are the environmental impacts of the rubber industry?5 answersThe rubber industry has significant environmental impacts. Rubber production requires large amounts of fertile land and freshwater, leading to competition with food systems and affecting rural communities' livelihoods and water resources. Rubber plantations have been found to cause deforestation, with higher rates than previously estimated, resulting in biodiversity loss and impacts on ecosystem services. The use of water, energy, and chemicals in natural rubber processing also contributes to environmental pollution. Rubber plantations in Xishuangbanna Region have led to a decrease in biodiversity, weak soil and water conservation, reduction of soil nutrients, and increased pest and disease outbreaks. These negative impacts highlight the need for strategies such as material substitution, wastewater reuse, and good housekeeping to prevent pollution in the rubber industry. Overall, the rubber industry's environmental impacts include pollution, deforestation, biodiversity loss, and competition for resources.