Editor’s note: with the continuous improvement of the level of science and technology, all kinds of new materials condoms have also been published. In recent years, with waterborne polyurethane and graphene as a raw material market to consumers condoms have landed in a wave of new experience, especially the graphene condoms, simply appears to subvert history of condoms. It is understood that graphene is the latest scientific discovery of the thinnest, the largest intensity, conductivity and thermal conductivity of the best of a new type of nano material. Its thermal conductivity is better than diamond, the fracture strength is 200 times higher than that of the best steel, and it has good elasticity, and the tensile range can reach 20% of its size. Last year, the addition of graphene latex condoms was born, graphene is currently known to science the most thin but most solid material is more thin, skin feel more comfortable, better toughness, not easy to break, not even the advantages of acupuncture. Compared with the traditional latex condoms, due to the absence of natural rubber ingredients, significantly reduce allergies. And seemingly simple material changes, we have gone for a whole 170 years. 0″Teletext independentIn 1839, American businessman Charles? Goodyear invented vulcanized rubber processing technology, and put into practical application. Only because of technical reasons, the condom can not be thinner thickness, poor texture, easy aging and rupture, and the use of not very easy to slip. Despite widespread criticism, the prevalence of sexually transmitted diseases (STDs) in Europe and the United States has been widespread, and vulcanized rubber condoms have played an important role in slowing the spread of sexually transmitted diseases.In the past 1 centuries, the material of condoms has not been improved or changed. It was not until 1930 that liquid emulsions made condoms thinner and more flexible. In 2013, Michael Lisanti (University of Manchester professor of oncology in Manchester Research) and Aravind Vijayaraghavan (Manchester Institute of graphene) have found that graphene added 0.1% in natural latex rubber can enhance the strength of the 50% natural rubber latex and stretch, they used as raw material to produce graphene and condoms, or so this year Gates got a $100 thousand gold trial.Since 2003, graphene is separated, graphene has become one of the most disruptive new materials, known as “black gold”, the scientific community is found at the thinnest, maximum intensity, electrical conductivity and thermal conductivity is one of the best new nano materials. Its thermal conductivity is better than diamond, the fracture strength is 200 times higher than that of the best steel, and it has good elasticity, and the tensile range can reach 20% of its size. In addition, it has a high transparency, absorbs only 2.3% of the light and is very dense, even the smallest gas atoms (helium atoms) cannot penetrate.Waterborne polyurethane is a kind of very good very suitable for condoms made of synthetic material, because of its small molecular spacing, density increase more than 3 times than that of natural rubber latex, the intensity is about 2 times of natural latex rubber, only slightly elastic in the short board, but has the characteristics of tearing resistance.As the level of science and technology continues to improve, there will be more and more thinner, more tenacious condom material available. As a populous country, China’s annual consumption of condoms is high up to 9 billion 600 million, average annual growth of more than 15% domestic condom use school-age population coverage of nearly 700 million people, common consumer groups close to 90 million, the overall market potential of up to thousands of condoms. Independent brands such as endless condoms are springing up, and only a few can really laugh.