Over-wide polyethylene greenhouse film resin composition and preparation method thereof
A resin composition, polyethylene technology, applied in the field of polyethylene resin composition, can solve the problems of limited range, inability to blow and use, film fisheye, etc., to prevent gelation, improve melt strength, and improve processability. Effect
Active Publication Date: 2012-04-11
PETROCHINA CO LTD
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Abstract
The invention provides an over-wide polyethylene greenhouse film resin composition and a preparation method thereof. Given the weight of linear low-density polyethylene (LLDPE) is 100wt%, the resin composition comprises the following components: 1, 100% of LLDPE; 2, 0.12-0.45wt% of compounded crosslinking auxiliary; and 3, 0.015-0.032% of dibenzoyl peroxide; in the composition, the compounded crosslinking auxiliary is compounded from 1,1-dimethyl-ethyl-hydrogen peroxide (TB) and 2,5-dimethyl-2,5-di-tert-butyl peroxide hexane (DBPH), and the mass ratio of the two crosslinking auxiliaries is (7:1)-(5:3). The melt strength of the composition is improved by more than twice and can be used for producing an over-wide greenhouse film with thickness not less than 80 mu m and width not less than 14m, and few 'fisheyes' are on the surface of the greenhouse film.
Technology Topic
Dibenzoyl PeroxideHydrogen peroxide +5
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PUM
Property | Measurement | Unit |
Thickness | 80.0 | µm |
Width | 14.0 | m |
Melt strength | 2.7 | cN |
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