Special material composition for high-elongation-percentage PVC-M (modified polyvinyl chloride) tubes
A special material for pipes, high elongation technology, applied in the field of high elongation PVC-M pipe special material composition, can solve problems such as reducing the mechanical properties of materials, and achieve the effects of resisting foundation subsidence, improving elongation, and broad market prospects
Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
Adding plasticizer can increase the elongation, but as a low molecular compound, plasticizer will greatly reduce the mechanical properties of the material, so it is rarely used or not used in hard products
Method used
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Embodiment 1～12
[0022] Examples 1 to 12 are the proportioning components of the high-elongation PVC-M pipe material composition of the present invention, as shown in Table 1. Wherein embodiment 10 is the best implementation mode.
[0023] Table 1 Embodiment 1~12 high elongation PVC-M pipe material composition (by weight)
[0024]
[0025]
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Abstract
The invention relates to a special material composition for high-elongation-percentage PVC-M (modified polyvinyl chloride) tubes, belonging to the field of high-molecular polymer materials. The special material composition for high-elongation-percentage PVC-M tubes is prepared from the following components in certain parts by weight: PVC resin, MBS (methyl methacrylate-butadiene-styrene)-561, organotin stabilizer, composite antiaging agent, lubricant, filler, processing assistant ACR and titanium white. The material composition reserves the high tensile strength of PVC-U (unplasticized polyvinyl chloride), and greatly enhances the elongation percentage of the PVC tube (the elongation percentage is up to 180-210%), so that the PVC tube has the advantages of high elongation percentage, favorable shock resistance, favorable working properties and the like. The impact strength is greatly enhanced, so that the PVC tube can effectively resist foundation settlement, point load and earthquake. The price per meter of the PVC tube prepared by the material composition is equivalent to that of the PVC-U tube, and lower than that of the PE (polyethylene) tube; and thus, the invention has broad market prospects.
Description
technical field [0001] The invention discloses a special material composition for high elongation PVC-M pipes, which belongs to the special material composition for high elongation PVC-M pipes and belongs to the field of resin processing applications. Background technique [0002] PVC-U pipe is a commonly used plastic pipe at present, which has the advantages of light weight, corrosion resistance, convenient installation and maintenance, and low price. In terms of water supply and drainage pipe network engineering construction, PVC-U pipes have the advantage of longer service life than PE pipes, and the theoretical long-term strength of PVC is also higher than that of PE (PVC≥25MPa, PE≥10MPa). However, during use, it was found that PVC-U is relatively brittle, easily injured when impacted, has low impact strength, and poor crack resistance. In this case, high-impact PVC-M pipes came into being. While maintaining the elastic modulus of PVC-U pipes, PVC-M pipes improve the fl...
Claims
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IPC IPC(8): C08L27/06C08L51/04C08K13/02C08K5/57C08K3/22
Inventor 刘浩王晶张新华李静张桦刘容德贾小波桂俊杰孙培培
Owner CHINA PETROLEUM & CHEM CORP