Biodegradable polyurethane elastomer and preparation method thereof
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A polyurethane elastomer, biodegradable technology, used in the synthesis and application of new chemical materials, can solve the problems of high melting point, limited application range, etc., achieve good mechanical properties, avoid high temperature degradation, and excellent processing performance
Active Publication Date: 2018-09-21
SHANDONG INOV POLYURETHANE
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[0003] However, the melting point of polyurethane elastomer materials is relatively high, and biodegradable materials such as polybutylene succinate, polylactic acid, and polycaprolactone are prone
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[0030] Example 1
[0031] Add polybutylene succinate: 5000kg, 1010: 9.3kg, 1076: 9.3kg, triphenyl phosphite: 9.3kg, E wax: 18.6kg, and stannous octoate: 1050g to the polyester high tank. Stir uniformly, add 3345kg of diphenylmethane diisocyanate to the high isocyanate tank, add 913kg of 1,4-butanediol to the high tank of the chain extender, set the flow rate of component A, component B and component C. It is driven into the twin-screw casting machine from the high slot, granulated by the underwater pelletizer, dehydrated, dried and vulcanized to obtain the product.
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[0032] Example 2
[0033] Add polybutylene succinate: 5000kg, 1010: 10.9kg, 1076: 10.9kg, triphenyl phosphite: 10.9kg, 69 wax: 10kg, oleic acid amide 11.8kg, caprylic acid in sequence into the polyester high tank Stannous: 990g, stir evenly, add 4481kg of diphenylmethane diisocyanate to the high isocyanate tank, add 1388kg of 1,4-butanediol to the high tank of the chain extender, and combine the components A, B and C Set the flow rate, feed into the twin-screw casting machine from the high slot, granulate by the underwater pelletizer, dehydrate, dry and vulcanize to obtain the product.
Example Embodiment
[0034] Example 3
[0035] Add polybutylene adipate: 5000kg, 1010: 9.3kg, 1076: 9.3kg, triphenyl phosphite: 9.3kg, E wax: 13.6kg, erucamide: 5kg in sequence to the polyester high tank, Stannous octoate: 1050g, stir evenly, add 3345kg of diphenylmethane diisocyanate to the high tank of isocyanate, add 913kg of 1,4-butanediol to the high tank of chain extender, and combine A component, B component and C group Set the flow rate separately, feed into the twin-screw casting machine from the high slot, granulate by the underwater pelletizer, dehydrate, dry and vulcanize to obtain the product.
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Abstract
The invention belongs to the technical field of chemical new material synthesis and application, and particularly relates to a biodegradable polyurethane elastomer and a preparation method thereof. The biodegradable polyurethane elastomer is prepared from double-hydroxyl end-capped biodegradable polyester, isocyanate, a chain extender and an addition agent. The double-hydroxyl end-capped biodegradable polyester is one or more of double-hydroxyl end-capped poly butylenes succinate, double-hydroxyl end-capped poly butylenes succinate, double-hydroxyl end-capped poly ethylene succinate, double-hydroxyl end-capped poly ethylene succinate, double-hydroxyl end-capped poly ethylene succinate and double-hydroxyl end-capped polybutylene terephthalate. The biodegradable polyurethane elastomer is good in mechanical property and excellent in processability, has biocompatibility and biodegradability, and can be applied in the field of mulching films, shopping bags and the like. The invention further provides a preparation method of the biodegradable polyurethane elastomer. A continuous one-step method is adopted for production, and the problems of product yellowing and performance degradation caused when long-chain degradable polyester is oxidized and degraded under the high-temperature condition are avoided.
Description
technical field [0001] The invention belongs to the technical field of synthesis and application of new chemical materials, and in particular relates to a biodegradable polyurethane elastomer and a preparation method thereof. Background technique [0002] With the development of the plastics industry, synthetic polymer materials play an extremely important role in various fields of industrial and agricultural production and daily life. However, traditional synthetic plastics are difficult to degrade and cause serious environmental problems such as "white pollution" after being discarded. It is urgent to find a new material that can degrade to alleviate the environmental pollution caused by traditional materials. At present, most degradable plastics are used directly or modified by degradable polyesters such as polylactic acid, poly 3-hydroxyalkanoate, polycaprolactone, polybutylene succinate, and polyurethane due to its excellent Strength, wear resistance, oil resistance an...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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