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Begonias' vivid colors captivate flower lovers.(Knight Ridder Newspapers)
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SALINAS, Calif. _ It seems that Mimi Schramm has always loved flowers. When she was 3 years old, she picked all of the prize blossoms from a neighbor's garden just before a home tour was about to begin.
For the last 25 years, her floral interests have centered on growing begonias. She and her husband, Bill, 65, a retired Navy captain, have a couple hundred varieties in their garden and greenhouse.
Showy saucer-size blossoms of tuberous begonias dazzle the eye in vivid reds, oranges and pinks. Lush foliage and dainty orange flowers flow out of baskets, and ...
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Review of vulcanization chemistry.
Magazine article from: Rubber World
; ...application and performance characteristics. Vulcanization is the transformation of an elastomer...ref. 1). Rheometers measure the vulcanization characteristics of a compound. The...an increase in crosslink density. Vulcanization characteristics such as time to the...
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Electric in-situ measurement of vulcanization.
Magazine article from: Rubber World
; Optimum vulcanization condition as cure temperature and cure time...used technique for estimating the degree of vulcanization. We propose a new technique to monitor the progress of vulcanization based on the measurement of pressure and...
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Crosslinking of polybutadiene rubber without any vulcanization agent.
Magazine article from: Polymer Engineering and Science
; ...be fillers (often carbon black), vulcanization agents including accelerators and retarders...an elastic rubber material are the vulcanization agents, which create the crosslinks...of achieving crosslinks without any vulcanization agents, by treatment at high temperature...
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Modeling the vulcanization reaction of silicone rubber.
Magazine article from: Polymer Engineering and Science
; ...and irreversible chemical reaction called vulcanization, or cure. The vulcanization process forms a three dimensional network...according to the polymer employed and the vulcanization process as low temperature vulcanizable rubbers...
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Vulcanization of elastomers. (Tech Service) (Column)
Magazine article from: Rubber World
; ...chemistry and technology involved in the vulcanization of rubber. The importance of insuring proper vulcanization to achieve desired properties in the...limited commercial value. What is vulcanization? The term vulcanization or crosslinking...
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Tech service. (the use of retarders in elastomer vulcanization) (part 3)
Magazine article from: Rubber World
; Retarders Vulcanization retarders comprise the final class of chemicals involved in rubber vulcanization. The purpose of these materials is...which would normally serve to accelerate vulcanization and produce a higher state of cure...
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Thiourea accelerators in the vulcanization of butyl elastomers.
Magazine article from: Rubber World
; ...final butyl compound properties, the vulcanization or cure system is of considerable importance...product assembly, e.g., a tire; * vulcanization systems suitable for high temperature...structures of accelerators used in the vulcanization of rubber fall into one of five groups...
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How to pick proper model vulcanization systems: Part 1 of 2.(Technical)
Magazine article from: Rubber & Plastics News
; ...Chemical Co. (Second of two parts) Vulcanization of butyl rubber The major applications...an oxidizing agent, increases the vulcanization rate allowing use in room temperature...illustrating the reaction of a dioxime in the vulcanization of butyl rubber. The dioxime vulcanization...
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Post vulcanization stabilization for NR. (natural rubber)
Magazine article from: Rubber World
; Post vulcanization stabilization for NR The physical...type of crosslinks formed during the vulcanization reaction[1,2 and 3]. The relationship...mechanism for accelerated sulfur vulcanization of natural rubber[4,5 and 6...
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Improved properties of SBS-modified asphalt with dynamic vulcanization.(Abstract)
Magazine article from: Polymer Engineering and Science
; ...with sulfur is a process of dynamic vulcanization, and this concept can be applied in practice. Dynamic vulcanization, which is widely used in rubber...block copolymers (11). Dynamic vulcanization can be described as follows: after...
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