Anti-fracture plastic at low temperature and preparation method thereof
An anti-fracture and plastic technology, applied in the field of low-temperature anti-fracture plastic and its preparation, can solve the problems of brittleness, notch sensitivity, and easy fracture, and achieve the effect of solving brittleness
Active Publication Date: 2017-02-22
SHANGHAI XINFAN IND
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a low-temperature anti-fracture plastic and its preparation method, which can effectively solve the problems of brittleness, poor toughness, easy fracture, and notch sensitivity under low temperature conditions.
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] The low-temperature fracture-resistant plastic provided by the invention and the preparation method thereof comprise the following components: high-polymer polypropylene, low-density polyethylene and polyethylene octene co-elastomer.
[0015] The low-temperature fracture-resistant plastic provided by the invention, the low-density polyethylene (LDPE), is suitable for various molding processes of thermoplastic molding processing, and has good molding processability. Polyethylene octene co-elastomer (POE) is a thermoplastic elastomer that uses metallocene catalysts to realize in-situ polymerization of ethylene and octene. Its characteristics are: (1) the soft chain coil structure of octene and the crystalline ethylene chain as The cross-linking point makes it have both excellent toughness and good processability. (2) There are no unsaturated doubl...
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The invention discloses low-temperature fracture prevented plastics and a preparation method thereof. The low-temperature fracture prevented plastics contain the ingredients, namely high-polymer polypropylene, low-density polyethylene and polyethylene-octylene copolymer elastomer. The preparation method comprises the following preparation steps: (a) firstly, adding PP-BA160E and LDPE-1922T into a high-speed plastic particle stirrer, and mixing at a low speed; (b) increasing the revolving speed of the particle stirrer, then, adding POE-LC175, which is preheated to the temperature of 90 DEG C, into the high-speed plastic particle stirrer, further mixing at a high speed, gradually increasing the temperature of the stirrer to 100-140 DEG C, discharging and cooling; (c) adding the mixed materials into a screw extruder for extrusion molding; (d) carrying out water cooling on strip-shaped materials, and guiding the cooled strip-shaped materials into a granulating machine for granulating. According to the low-temperature fracture prevented plastics and the preparation method thereof, through combining the high-polymer polypropylene, the low-density polyethylene and the polyethylene-octylene copolymer elastomer, the adverse problems that the plastics are brittle and are prone to fracture under the condition of low temperature can be effectively solved.
Description
technical field [0001] The invention relates to a plastic and a preparation method thereof, in particular to a low-temperature fracture-resistant plastic and a preparation method thereof. Background technique [0002] Plastic is a polymer compound (macromolecules) that is polymerized by addition or polycondensation of monomers, commonly known as plastics or resins. It can freely change its composition and shape. It is composed of synthetic resins and fillers, Plasticizer, stabilizer, lubricant, colorant and other additives. Plastics have been widely used, but under low temperature conditions, ordinary plastic products will be brittle and so on. Especially for plastic seals, after bending, the serrated seals and locking rods generally have problems such as whitening and breaking, especially under low temperature conditions, which seriously affect product quality. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a...
Claims
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IPC IPC(8): C08L23/12C08L23/06C08L23/08B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L23/12C08L2205/03C08L2207/062C08L23/06C08L23/0815
Inventor 翁立丰翁煜明顾新明牛建平
Owner SHANGHAI XINFAN IND