A kind of high creep resistance ultra-high molecular weight polyethylene fiber and preparation method thereof
An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin rayon, fiber treatment, fiber chemical characteristics, etc., can solve the problems of uneven chemical structure, fiber surface cross-linking, surface oxidation, etc. Enhance antioxidant properties, reduce oxidation, overcome time-consuming effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0034] see figure 1 As shown, the present invention provides a preparation method of high creep-resistant ultra-high molecular weight polyethylene fiber, comprising the following steps:
[0035] S1, prepare a mixed suspension: mix the ultra-high molecular weight polyethylene powder, mixed solvent, antioxidant and sensitizer in a predetermined proportion, and stir for 8-20 hours to achieve full swelling and uniform dispersion, and obtain a uniform mixed suspension;
[0036] S2, spinning extraction: the mixed suspension obtained in step S1 is placed in a twin-screw extruder for spinning treatment, and then passed through a cooling water bath to obtain primary jelly silk; The mixed extraction liquid composed of oxidant is extracted and then dried, and then, the initial fiber product is obtained through multi-stage thermal drawing and multi-stage drying oven;
[0037] S3, Irradiation crosslinking: the initial fiber product is irradiated with a predetermined dose, and finally anne...
Embodiment 1
[0048] Embodiment 1 of the present invention provides a method for preparing a high creep-resistant ultra-high molecular weight polyethylene fiber, comprising the following steps:
[0049] S1, prepare mixed suspension: mix ultra-high molecular weight polyethylene powder, mixed solvent, antioxidant and sensitizer in the ratio of 10; 87; 2; 1, and stir for 12h to achieve full swelling and uniform dispersion, keep mixing The liquid dynamics are uniform and uniform, and a uniform mixed suspension is obtained;
[0050] Wherein, the mixed solvent is a mixed solution of paraffin oil and white oil; the sensitizer is trimethylolpropane trimethacrylate; the antioxidant is tert-butyl hydroquinone.
[0051] S2, spinning extraction: pass the mixed suspension obtained in step S1 through a twin-screw extruder, a spinneret and a spinning box (pre-drafting 3-6 times), and after spinning treatment, pass through a cooling water bath to obtain primary jelly silk; the primary jelly silk is extrac...
Embodiment 2-5
[0063] The difference from Example 1 is that the ratio of antioxidants in the suspension in step S1 and the ratios of extractant and antioxidant in the extraction process in step S2 are set differently, as shown in Table 1.
[0064] Table 1 is the technological parameter setting of embodiment 1-5 and the performance parameter of monofilament fiber
[0065]
[0066] Combined with Table 1 for analysis:
[0067] The effect of the proportion of antioxidants in the suspension on the creep elongation or antioxidant properties of high-creep-resistant UHMWPE fibers is: the proportion of antioxidants in the suspension affects the oxidation of fibers during fiber spinning. degree. Within a certain range, the higher the proportion of antioxidants, the smaller the degree of oxidation. The degree of oxidation determines the chemical structure of the fiber. Severe oxidation will increase the creep elongation of the fiber.
[0068] In the mixed extract, the effect of the ratio of extrac...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com